Daikin Altherma EBLQ011CAV3 User manual
Service manual
Daikin Altherma – Monobloc English
Service manual
Daikin Altherma – Monobloc
EBLQ011~016CAV3
EBLQ011~016CAW1
EDLQ011~016CAV3
EDLQ011~016CAW1
EBLQ011~016CA3V3
EBLQ011~016CA3W1
EDLQ011~016CA3V3
EDLQ011~016CA3W1
EKCB07CAV3
EK2CB07CAV3
EKMBUHCA3V3
EKMBUHCA9W1
Disclaimer
Service manual
2
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Disclaimer
The present publication is drawn up by way of information only and does not constitute an offer binding upon Daikin Europe N.V.. Daikin
Europe N.V. has compiled the content of this publication to the best of its knowledge. No express or implied warranty is given for the
completeness, accuracy, reliability or fitness for particular purpose of its content and the products and services presented therein.
Specifications are subject to change without prior notice. Daikin Europe N.V. explicitly rejects any liability for any direct or indirect damage, in
the broadest sense, arising from or related to the use and/or interpretation of this publication. All content is copyrighted by Daikin Europe N.V..
Table of contents
Service manual
3
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Table of contents
1 Troubleshooting 4
1.1 To display the help text in case of a malfunction....................... 4
1.2 To check the error history.......................................................... 4
1.3 To check the warning history..................................................... 4
1.4 Error based troubleshooting ...................................................... 4
1.4.1 7H-01 – Abnormal flow ............................................... 4
1.4.2 7H-04 – Abnormal flow (domestic hot water).............. 5
1.4.3 7H-05 – Abnormal flow (Heating/sampling) ................ 5
1.4.4 7H-06 – Abnormal flow (Cooling/defrost).................... 6
1.4.5 7H-07 – Abnormal flow / pump de-blocking ................ 6
1.4.6 80-00 – Inlet water thermistor abnormality.................. 6
1.4.7 81-00 – Outlet water thermistor abnormality............... 6
1.4.8 89-01 – Water heat exchange freezing abnormality ... 7
1.4.9 89-02 – Water heat exchange freezing abnormality ... 7
1.4.10 89-03 – Water heat exchange freezing abnormality ... 7
1.4.11 8F-00 – Backup heater outlet water temperature
increase (during domestic hot water without booster
heater)......................................................................... 7
1.4.12 8H-00 – Backup heater outlet water temperature
increase ...................................................................... 8
1.4.13 8H-02 – Overheating mixed water circuit
(thermostat)................................................................. 8
1.4.14 8H-03 – Overheating water circuit (thermostat) .......... 8
1.4.15 A1-00 – Zero cross detection abnormality .................. 8
1.4.16 A1-01 – EEPROM abnormality ................................... 9
1.4.17 A5-00 – Cooling high pressure abnormality................ 9
1.4.18 AA-01 – Backup heater overheating ........................... 9
1.4.19 AC-00 – Booster heater overheating .......................... 10
1.4.20 AH-00 – Legionella operation failed............................ 10
1.4.21 AJ-03 – Domestic hot water long heat-up
abnormality ................................................................. 10
1.4.22 C0-00 – Flow sensor malfunction ............................... 11
1.4.23 C0-01 – Flow switch malfunction ................................ 11
1.4.24 C0-02 – Flow switch malfunction ................................ 11
1.4.25 C4-00 – Indoor heat exchanger thermistor
abnormality ................................................................. 12
1.4.26 CJ-02 – Ambient sensor user interface abnormality ... 12
1.4.27 E1-00 – PCB defect .................................................... 12
1.4.28 E3-00 – High pressure switch abnormality ................. 12
1.4.29 E5-00 – Overheat of inverter compressor motor......... 13
1.4.30 E6-00 – Compressor startup defect ............................ 13
1.4.31 E7-00 – Fan lock abnormality ..................................... 14
1.4.32 E8-00 – Input overvoltage abnormality ....................... 14
1.4.33 E9-00 – Expansion valve abnormality......................... 14
1.4.34 EA-00 – Cooling/Heating switch abnormality.............. 14
1.4.35 EC-00 – Domestic hot water temperature increase .... 15
1.4.36 EC-04 – Tank preheating............................................ 15
1.4.37 F3-00 – Discharge pipe temperature stop
abnormality ................................................................. 15
1.4.38 F6-00 – Stop due to cooling high pressure ................. 15
1.4.39 FA-00 – Abnormal high pressure ................................ 16
1.4.40 H0-00 – Current sensor abnormality........................... 16
1.4.41 H1-00 – Option thermistor abnormality ....................... 16
1.4.42 H3-00 – High pressure switch defect .......................... 17
1.4.43 H6-00 – Location detection sensor abnormality.......... 17
1.4.44 H8-00 – Compressor input abnormality ...................... 17
1.4.45 H9-00 – Outdoor air thermistor abnormality................ 18
1.4.46 HC-00 – Lower domestic hot water tank thermistor
abnormality ................................................................. 18
1.4.47 J3-00 – Discharge pipe thermistor dislocation
abnormality ................................................................. 18
1.4.48 J6-00 – Outdoor heat exchanger thermistor
abnormality ................................................................. 18
1.4.49 JA-00 – Pressure sensor abnormality......................... 18
1.4.50 L3-00 – Electrical component temperature
abnormality ................................................................. 19
1.4.51 L4-00 – Fin temperature increase abnormality ............ 19
1.4.52 L5-00 – Output over current abnormality ..................... 19
1.4.53 P4-00 – Fin thermistor abnormality.............................. 19
1.4.54 U0-00 – Shortage of refrigerant ................................... 20
1.4.55 U3-00 – Under floor heating screed dry out stop ......... 20
1.4.56 U4-00 – Indoor/outdoor transmission abnormality ....... 20
1.4.57 U5-00 – Remote control transmission defect............... 20
1.4.58 U7-00 – Transmission abnormality between outdoor
main microcomputer - sub microcomputer................... 21
1.4.59 U8-01 – Lost LAN adapter connection......................... 21
1.4.60 UA-00 – Indoor/outdoor combination abnormality ....... 21
1.4.61 UA-16 – Extension/hydro communication problem...... 21
1.4.62 UA-21 – Extension PCB / hydro PCB mismatch error . 22
1.5 Symptom based troubleshooting................................................ 23
1.5.1 Incorrect energy metering read-out.............................. 23
1.5.2 Water pump related ..................................................... 23
1.5.3 Tap water related ......................................................... 24
1.5.4 User interface is failure or frozen screen ..................... 25
1.5.5 Leak ............................................................................. 25
1.5.6 Water flow or volume too low....................................... 25
1.5.7 Compressor related ..................................................... 25
1.5.8 Abnormal presence of ice ............................................ 27
1.5.9 Domestic hot water capacity shortage ......................... 28
1.5.10 General capacity shortage ........................................... 28
1.5.11 Space heating capacity shortage................................. 30
1.5.12 Inaccurate temperature control .................................... 31
1.5.13 Power consumption too high........................................ 32
1.5.14 System does not start or operate................................. 33
2 Components 35
2.1 3-way valve ................................................................................ 35
2.1.1 Checking procedures ................................................... 35
2.1.2 Repair procedures ....................................................... 36
2.2 4-way valve ................................................................................ 38
2.2.1 Checking procedures ................................................... 38
2.2.2 Repair procedures ....................................................... 39
2.3 Accumulator assembly ............................................................... 40
2.3.1 Checking procedures ................................................... 40
2.3.2 Repair procedures ....................................................... 40
2.4 Backup heater ............................................................................ 41
2.4.1 Built-in backup heater .................................................. 41
2.4.2 Backup heater kit ......................................................... 45
2.5 Backup heater thermal protector ................................................ 48
2.5.1 Checking procedures ................................................... 48
2.5.2 Repair procedures ....................................................... 48
2.6 Booster heater............................................................................ 49
2.6.1 Checking procedures ................................................... 49
2.6.2 Repair procedures ....................................................... 49
2.7 Booster heater thermal protector................................................ 50
2.7.1 Checking procedures ................................................... 50
2.7.2 Repair procedures ....................................................... 50
2.8 Compressor................................................................................ 50
2.8.1 Checking procedures ................................................... 50
2.8.2 Repair procedures ....................................................... 51
2.9 Crankcase heater ....................................................................... 52
2.9.1 Checking procedures ................................................... 52
2.9.2 Repair procedures ....................................................... 53
2.10 Current loop PCB ....................................................................... 53
2.10.1 Checking procedures ................................................... 53
2.10.2 Repair procedures ....................................................... 53
2.11 Expansion valve ......................................................................... 54
2.11.1 Checking procedures ................................................... 54
2.11.2 Repair procedures ....................................................... 54
2.12 Extension PCB ........................................................................... 56
2.12.1 Checking procedures ................................................... 56
2.12.2 Repair procedures ....................................................... 57
2.13 High pressure switch .................................................................. 57
2.13.1 Checking procedures ................................................... 57
2.13.2 Repair procedures ....................................................... 57
2.14 Hydro PCB ................................................................................. 58
1 Troubleshooting
Service manual
4
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
2.14.1 Checking procedures .................................................. 58
2.14.2 Repair procedures ...................................................... 60
2.15 Inverter PCB .............................................................................. 61
2.15.1 Double fan outdoor unit – single phase ...................... 61
2.15.2 Double fan outdoor unit – three phase........................ 62
2.16 LAN adapter PCB ...................................................................... 66
2.16.1 Checking procedures .................................................. 66
2.16.2 Repair procedures ...................................................... 66
2.17 Main PCB .................................................................................. 66
2.17.1 Double fan outdoor unit – single phase ...................... 67
2.17.2 Double fan outdoor unit – three phase........................ 71
2.18 Outdoor unit fan motor .............................................................. 73
2.18.1 Checking procedures .................................................. 73
2.18.2 Repair procedures ...................................................... 75
2.19 Plate work.................................................................................. 77
2.19.1 To open the outdoor unit............................................. 77
2.19.2 To open the switch box cover of the outdoor unit ....... 77
2.19.3 To open the control box .............................................. 77
2.19.4 To open the option box ............................................... 77
2.19.5 To remove the hydrobox ............................................. 77
2.19.6 To install the hydrobox................................................ 78
2.20 Reactor ...................................................................................... 78
2.20.1 Checking procedures .................................................. 78
2.20.2 Repair procedures ...................................................... 79
2.21 Refrigerant pressure sensor ...................................................... 79
2.21.1 Checking procedures .................................................. 79
2.21.2 Repair procedures ...................................................... 80
2.22 Solenoid valve ........................................................................... 81
2.22.1 Checking procedures .................................................. 81
2.22.2 Repair procedures ...................................................... 81
2.23 Thermistors ............................................................................... 82
2.23.1 Refrigerant thermistors ............................................... 82
2.23.2 Water thermistors........................................................ 84
2.24 User interface ............................................................................ 87
2.24.1 Checking procedures .................................................. 87
2.24.2 Repair procedures ...................................................... 87
2.25 Water flow sensor...................................................................... 87
2.25.1 Checking procedures .................................................. 87
2.25.2 Repair procedures ...................................................... 88
2.26 Water pump ............................................................................... 89
2.26.1 Checking procedures .................................................. 89
2.26.2 Repair procedures ...................................................... 90
3 Third party components 91
3.1 Power supply............................................................................. 91
3.1.1 Checking procedures .................................................. 91
3.1.2 Repair procedures ...................................................... 92
3.2 Refrigerant circuit ...................................................................... 92
3.2.1 Checking procedures .................................................. 92
3.2.2 Repair procedures ...................................................... 93
3.3 Water circuit .............................................................................. 95
3.3.1 Checking procedures .................................................. 95
3.3.2 Repair procedures ...................................................... 96
3.4 Manuafacturer components....................................................... 98
3.4.1 Checking procedures .................................................. 98
3.4.2 Repair procedures ...................................................... 98
3.5 External factors ......................................................................... 98
3.5.1 Checking procedures .................................................. 98
4 Maintenance 99
4.1 To clean the outdoor unit heat exchanger................................. 99
4.2 To clean the water filter ............................................................. 99
5 Technical data 100
5.1 Detailed information setting mode............................................. 100
5.1.1 Detailed information setting mode: Outdoor unit......... 100
5.1.2 Detailed information setting mode: Remote controller 100
5.2 Wiring diagram .......................................................................... 101
5.2.1 Wiring diagram: Single phase ..................................... 101
5.2.2 Wiring diagram: Three phase...................................... 112
5.3 Piping diagram: Outdoor unit......................................................123
5.4 Component overview..................................................................124
5.4.1 Component overview: Single phase ............................124
5.4.2 Component overview: Three phase .............................126
5.5 Field information report ..............................................................128
5.6 Service tools............................................................................... 131
5.7 Field settings .............................................................................. 131
1 Troubleshooting
1.1 To display the help text in case of
a malfunction
If a malfunction occurs, is displayed on the home pages. You can
press to display more information about the malfunction.
1.2 To check the error history
Prerequisite: Only available if is displayed on the home pages.
1Go to [6.3.1]: > Information > Error handling > Error history.
1.3 To check the warning history
Prerequisite: Only available if is displayed on the home pages.
1Go to [6.3.1]: > Information > Error handling > Warning
history.
1.4 Error based troubleshooting
1.4.1 7H-01 – Abnormal flow
Trigger Effect Reset
System detects flow
abnormality during
operation.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check that all stop valves of the water circuit are open. See
"3.3Water circuit"on page95.
Possible cause: Closed stop valve in the water circuit.
2Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
3Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
4Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
5Check the water volume. See "3.3Water circuit"on page95.
Possible cause: Water volume is too low.
6Check if a by‑pass is installed in the water circuit. See
"3.3Water circuit"on page95.
Possible cause: No by‑pass installed in the water circuit.
7Clean the water filter. See "4Maintenance"on page99.
Possible cause: Faulty or dirty water filter.
1 Troubleshooting
Service manual
5
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
8Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
9Perform a check of the 3-way valve. See "2.13-way valve" on
page35.
Possible cause: Faulty 3‑way valve.
10 Perform a check of the water pump. See "2.26Water pump"on
page89.
Possible cause: Faulty water pump.
11 Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.2 7H-04 – Abnormal flow (domestic hot
water)
Trigger Effect Reset
Water flow
abnormality
determined mainly
during domestic hot
water.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
NOTICE
Focus the troubleshooting on the domestic hot water
circuit.
1Check that all stop valves of the water circuit are open. See
"3.3Water circuit"on page95.
Possible cause: Closed stop valve in the water circuit.
2Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
3Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
4Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
5Check the water volume. See "3.3Water circuit"on page95.
Possible cause: Water volume is too low.
6Check if a by‑pass is installed in the water circuit. See
"3.3Water circuit"on page95.
Possible cause: No by‑pass installed in the water circuit.
7Clean the water filter. See "4Maintenance"on page99.
Possible cause: Faulty or dirty water filter.
8Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
9Perform a check of the 3-way valve. See "2.13-way valve" on
page35.
Possible cause: Faulty 3‑way valve.
10 Perform a check of the water pump. See "2.26Water pump"on
page89.
Possible cause: Faulty water pump.
11 Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.3 7H-05 – Abnormal flow (Heating/sampling)
Trigger Effect Reset
Water flow
abnormality
determined mainly
during space heating.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
NOTICE
Focus the troubleshooting on the space heating circuit.
1Check that all stop valves of the water circuit are open. See
"3.3Water circuit"on page95.
Possible cause: Closed stop valve in the water circuit.
2Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
3Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
4Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
5Check the water volume. See "3.3Water circuit"on page95.
Possible cause: Water volume is too low.
6Check if a by‑pass is installed in the water circuit. See
"3.3Water circuit"on page95.
Possible cause: No by‑pass installed in the water circuit.
7Clean the water filter. See "4Maintenance"on page99.
Possible cause: Faulty or dirty water filter.
8Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
9Perform a check of the 3-way valve. See "2.13-way valve" on
page35.
Possible cause: Faulty 3‑way valve.
10 Perform a check of the water pump. See "2.26Water pump"on
page89.
Possible cause: Faulty water pump.
11 Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
1 Troubleshooting
Service manual
6
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.4 7H-06 – Abnormal flow (Cooling/defrost)
Trigger Effect Reset
Water flow
abnormality
determined mainly
during cooling or
defrost operation.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
NOTICE
Focus the troubleshooting on the space cooling circuit.
1Check that all stop valves of the water circuit are open. See
"3.3Water circuit"on page95.
Possible cause: Closed stop valve in the water circuit.
2Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
3Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
4Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
5Check the water volume. See "3.3Water circuit"on page95.
Possible cause: Water volume is too low.
6Check if a by‑pass is installed in the water circuit. See
"3.3Water circuit"on page95.
Possible cause: No by‑pass installed in the water circuit.
7Clean the water filter. See "4Maintenance"on page99.
Possible cause: Faulty or dirty water filter.
8Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
9Perform a check of the 3-way valve. See "2.13-way valve" on
page35.
Possible cause: Faulty 3‑way valve.
10 Perform a check of the water pump. See "2.26Water pump"on
page89.
Possible cause: Faulty water pump.
11 Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
12 Perform a check of the backup heater. See "2.4 Backup
heater"on page41.
Possible cause: Faulty backup heater.
13 Perform a check of the booster heater. See "2.6 Booster
heater"on page49.
Possible cause: Faulty booster heater.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.5 7H-07 – Abnormal flow / pump de-
blocking
Trigger Effect Reset
Unit detects that the
pump might be
blocked.
Unit will NOT stop
operating. Pump
de‑blocking routine
started (30minutes).
Automatic reset when
pump is de‑blocked.
To solve the error code
1No specific check / repair procedures can be performed to solve
this error code. Wait until the pump de–blocking routine is
finished (±30minutes maximum).
INFORMATION
As long as the pump de‑blocking routine is active, the error
code will be displayed on the user interface.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.6 80-00 – Inlet water thermistor abnormality
Trigger Effect Reset
Inlet water thermistor
input is out of range.
Unit will stop
operating.
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the inlet water thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty inlet water thermistor.
2Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.7 81-00 – Outlet water thermistor
abnormality
Trigger Effect Reset
Outlet water
thermistor input is out
of range.
Unit will stop
operating.
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the outlet water thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty outlet water thermistor.
1 Troubleshooting
Service manual
7
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
2Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.8 89-01 – Water heat exchange freezing
abnormality
Trigger Effect Reset
Warning 89‑02 or
89‑03 occurred 3
times, with less than
30minutes between
each warning.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the heat exchanger thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty heat exchanger thermistor.
2Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
3Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
4Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
5Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
6Check the water volume. See "3.3Water circuit"on page95.
Possible cause: Water volume is too low.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.9 89-02 – Water heat exchange freezing
abnormality
Trigger Effect Reset
Condensing
temperature <0°C
during space heating.
Unit will stop
operating.
Automatic reset.
Liquid refrigerant
thermistor ≤0°C
during space heating
or domestic hot
water.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the 4‑way valve. See "2.24-way valve" on
page38.
Possible cause: Faulty 4‑way valve.
2Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.10 89-03 – Water heat exchange freezing
abnormality
Trigger Effect Reset
Evaporation
temperature is too
low during defrost.
Unit will NOT stop
operating.
Automatic reset.
Outlet water after
plate type heat
exchanger thermistor
<6°C during defrost.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the outlet water after plate type heat
exchanger thermistor. See "2.23Thermistors"on page82.
Possible cause: Faulty outlet water after plate type heat
exchanger thermistor.
2Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.11 8F-00 – Backup heater outlet water
temperature increase (during domestic
hot water without booster heater)
Trigger Effect Reset
Outlet water after
backup heater
thermistor detects
temperature >75°C
during domestic hot
water without
electrical heater.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the water circuit for an external heat source. See
"3.3Water circuit"on page95.
1 Troubleshooting
Service manual
8
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Possible cause: Increased water temperature due to an
external heat source.
2Perform a check of the outlet water after backup heater
thermistor. See "2.23Thermistors"on page82.
Possible cause: Faulty outlet water after backup heater
thermistor.
3Perform a check of the backup heater. See "2.4 Backup
heater"on page41.
Possible cause: Faulty backup heater.
4Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.12 8H-00 – Backup heater outlet water
temperature increase
Trigger Effect Reset
Outlet water after
backup heater
thermistor detects
temperature >65°C
during space heating
without electrical
heater.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the water circuit for an external heat source. See
"3.3Water circuit"on page95.
Possible cause: Increased water temperature due to an
external heat source.
2Perform a check of the outlet water after backup heater
thermistor. See "2.23Thermistors"on page82.
Possible cause: Faulty outlet water after backup heater
thermistor.
3Perform a check of the backup heater. See "2.4 Backup
heater"on page41.
Possible cause: Faulty backup heater.
4Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.13 8H-02 – Overheating mixed water circuit
(thermostat)
Trigger Effect Reset
Thermal protector
Q3L in mixed circuit
is activated.
Unit will stop
operating.
Automatic reset after
reset of thermal
protector.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the thermal protector Q3L. See
"3.4.1Checking procedures"on page98.
Possible cause: Faulty thermal protector or faulty switching
temperature of thermal protector Q3L.
2Perform an electrical check of the extension PCB. See
"2.12Extension PCB"on page56.
Possible cause: Faulty extension PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.14 8H-03 – Overheating water circuit
(thermostat)
Trigger Effect Reset
Unit detects activated
aquastat.
Pump will stop
running.
Automatic reset when
the circuit is closed.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the set trigger temperature of the safety thermostat. See
"3.4Manuafacturer components"on page98.
Possible cause: Faulty trigger temperature setting of the
safety thermostat.
2Check the set water temperature. See "2.24User interface"on
page87.
Possible cause: Faulty water temperature setting.
3Perform a check of the 3-way valve. See "2.13-way valve" on
page35.
Possible cause: Faulty 3‑way valve.
4Perform a check of the operation of the Aquastat. See
"3.4Manuafacturer components"on page98.
Possible cause: Faulty Aquastat.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.15 A1-00 – Zero cross detection abnormality
Trigger Effect Reset
Power supply
abnormality. The
sinus of the power
supply crosses the
0‑axis too often in
±10seconds.
Unit will stop
operating.
Manual reset via user
interface.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Troubleshooting
Service manual
9
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
2Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
3Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.16 A1-01 – EEPROM abnormality
Trigger Effect Reset
Hydro PCB detects
EEPROM
abnormality.
Unit will stop
operating.
Manual reset via user
interface.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
2Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.17 A5-00 – Cooling high pressure
abnormality
Trigger Effect Reset
Heat exchanger
thermistor measures
a temperature below
0°C, 15 times in
300minutes.
Unit will stop
operating.
Manual reset via user
interface.
Condensing
temperature reaches
59.5°C (saturated
condensing
temperature), 15
times in 300minutes.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
2Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
3Check that all stop valves of the water circuit are open. See
"3.3Water circuit"on page95.
Possible cause: Closed stop valve in the water circuit.
4Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
5Perform a check of the outdoor air thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty outdoor air thermistor.
6Perform a check of the expansion valve. See "2.11Expansion
valve"on page54.
Possible cause: Faulty expansion valve.
7Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.18 AA-01 – Backup heater overheating
Trigger Effect Reset
Thermal protector is
activated. Measured
water temperature
>90°C.
Unit will stop
operating.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
2Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
3Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
1 Troubleshooting
Service manual
10
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
4Check the water circuit for an external heat source. See
"3.3Water circuit"on page95.
Possible cause: Increased water temperature due to an
external heat source.
5Perform a check of the backup heater thermal protector. See
"2.5Backup heater thermal protector"on page48.
Possible cause: Faulty backup heater thermal protector.
6Perform a check of the outlet water after backup heater
thermistor. See "2.23Thermistors"on page82.
Possible cause: Faulty outlet water after backup heater
thermistor.
7Perform a check of the backup heater. See "2.4 Backup
heater"on page41.
Possible cause: Faulty backup heater.
8Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.19 AC-00 – Booster heater overheating
Trigger Effect Reset
Thermal protector is
activated. Measured
water temperature
>85°C.
Unit will NOT stop
operating.
Manual reset of the
thermal protector.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
2Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
3Check the water circuit for an external heat source. See
"3.3Water circuit"on page95.
Possible cause: Increased water temperature due to an
external heat source.
4Check the domestic hot water tank and booster heater related
settings. See "2.24User interface"on page87.
Possible cause: Faulty booster heater settings.
5Perform a check of the booster heater thermal protector. See
"2.7Booster heater thermal protector"on page50.
Possible cause: Faulty booster heater thermal protector.
6Perform a check of the booster heater. See "2.6 Booster
heater"on page49.
Possible cause: Faulty booster heater.
7Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
8Perform a check of the power supply, connections, wiring,…
between the outdoor unit, indoor unit and domestic hot water
tank. See "3.1Power supply"on page91.
Possible cause: Faulty wiring between the outdoor unit,
indoor unit and domestic hot water tank.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.20 AH-00 – Legionella operation failed
Trigger Effect Reset
Disinfection setpoint
is NOT reached
within 6hours or NOT
kept for the required
time.
Unit will NOT stop
operating.
Automatic reset when
disinfection is
completed.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check when the disinfection is scheduled. Schedule it when
there is little chance that water will be tapped so that the
disinfection can finish in time.
Possible cause: Large quantity of hot water has been tapped
during/before disinfection.
2Check the backup heater settings [2‑00] to [2‑04] and [4‑00].
See "2.24User interface"on page87.
Possible causes:
▪ Backup heater is restricted during disinfection,
▪ Backup heater NOT allowed.
3Check the domestic hot water tank and booster heater related
settings. See "2.24User interface"on page87.
Possible cause: Faulty booster heater settings.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.21 AJ-03 – Domestic hot water long heat-up
abnormality
Trigger Effect Reset
Domestic hot water
heat‑up time
>6hours.
Unit will switch to
space heating/cooling
for 3hours.
Automatic reset after
a domestic hot water
heat‑up time
<6hours.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the backup heater. See "2.4 Backup
heater"on page41.
Possible cause: Faulty backup heater.
2Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
3Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
1 Troubleshooting
Service manual
11
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Possible cause: Faulty hydro PCB.
4Perform a check of the 3-way valve. See "2.13-way valve" on
page35.
Possible cause: Faulty 3‑way valve.
5Check the installation for a leaking field installed domestic hot
water tap. See "3.3Water circuit"on page95.
Possible cause: Leaking field installed domestic hot water
tap.
6Check the settings of the backup heater [4‑00]. See "2.24User
interface"on page87.
Possible cause: Backup heater NOT allowed.
7Check the software and EEPROM version on the user interface
and hydro PCB. See "2.24User interface"on page87.
Possible cause: Mismatch between the software ID and
EEPROM on the hydro PCB or user interface.
8Check that the domestic hot water consumption is NOT too
large. Lower if needed.
Possible cause: Domestic hot water consumption too large.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.22 C0-00 – Flow sensor malfunction
Trigger Effect Reset
Water flow sensor
detects water flow
45seconds after the
water pump has
stopped.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
2Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
3Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
4Check the water circuit for an external pump. See "3.3 Water
circuit"on page95.
Possible cause: The detected water flow is caused by an
external pump.
5Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
6To check for the presence of an external source of vibration.
See "3.5External factors"on page98.
Possible cause: The detected water flow is caused by an
external source of vibration.
7Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.23 C0-01 – Flow switch malfunction
Trigger Effect Reset
Unit detects flow via
flow switch when
pump is not running.
Unit will stop
operating.
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
2Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
3Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
4Check the water circuit for an external pump. See "3.3 Water
circuit"on page95.
Possible cause: The detected water flow is caused by an
external pump.
5Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
6To check for the presence of an external source of vibration.
See "3.5External factors"on page98.
Possible cause: The detected water flow is caused by an
external source of vibration.
7Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.24 C0-02 – Flow switch malfunction
Trigger Effect Reset
Unit detects flow via
flow switch when
pump is not running.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
2Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
3Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
1 Troubleshooting
Service manual
12
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Possible cause: Air in the water circuit.
4Check the water circuit for an external pump. See "3.3 Water
circuit"on page95.
Possible cause: The detected water flow is caused by an
external pump.
5Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
6To check for the presence of an external source of vibration.
See "3.5External factors"on page98.
Possible cause: The detected water flow is caused by an
external source of vibration.
7Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.25 C4-00 – Indoor heat exchanger thermistor
abnormality
Trigger Effect Reset
Refrigerant liquid
thermistor detects an
open or short circuit
during compressor
operation.
Unit will stop
operating.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1Perform a check of the refrigerant liquid thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty refrigerant liquid thermistor.
2Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.26 CJ-02 – Ambient sensor user interface
abnormality
Trigger Effect Reset
Ambient sensor user
interface input is out
of range.
Unit will NOT stop
operating.
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the room thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty room thermistor.
2Perform a check of the power supply to the user interface. See
"2.24User interface"on page87.
Possible cause: Faulty power supply to the user interface.
3If all checks above are correct, replace the user interface. See
"2.24User interface"on page87.
Possible cause: Faulty user interface.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.27 E1-00 – PCB defect
Trigger Effect Reset
Main PCB detects
that EEPROM is
abnormal.
Unit will stop
operating.
Manual reset via user
interface.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
2Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
3Perform a check of the outdoor unit fan motor. See
"2.18Outdoor unit fan motor"on page73.
Possible cause: Faulty outdoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.28 E3-00 – High pressure switch abnormality
Trigger Effect Reset
High pressure switch
opens due to
measured pressure
>41.7bar.
Unit will stop
operating.
Manual reset via user
interface.
High pressure control
(measured pressure
>38bar) occurs 16
times within
300minutes.
1 Troubleshooting
Service manual
13
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the refrigerant pressure sensor. See
"2.21Refrigerant pressure sensor"on page79.
Possible cause: Faulty refrigerant pressure sensor.
2Perform a check of the high pressure switch. See "2.13 High
pressure switch"on page57.
Possible cause: Faulty high pressure switch.
3Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
4Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
5Perform a check of the outdoor unit fan motor. See
"2.18Outdoor unit fan motor"on page73.
Possible cause: Faulty outdoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.29 E5-00 – Overheat of inverter compressor
motor
Trigger Effect Reset
Compressor overload
is detected.
Unit will NOT stop
operating.
Automatic reset if the
unit runs without
warning for
60seconds.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the discharge pipe thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty discharge pipe thermistor.
2Perform a check of the outdoor unit fan motor. See
"2.18Outdoor unit fan motor"on page73.
Possible cause: Faulty outdoor unit fan motor.
3Perform a check of the compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
4Perform a check of the expansion valve. See "2.11Expansion
valve"on page54.
Possible cause: Faulty expansion valve.
5Perform a check of the 4‑way valve. See "2.24-way valve" on
page38.
Possible cause: Faulty 4‑way valve.
6Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
7Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
8Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.30 E6-00 – Compressor startup defect
Trigger Effect Reset
The motor rotor does
NOT rotate when the
compressor is
energized.
Unit will NOT stop
operating.
Automatic reset after
a continuous run for
10minutes.
Unit will stop
operating
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the discharge pipe thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty discharge pipe thermistor.
2Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
3Perform a check of the compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
4Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
5Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
6Perform a check of the 4‑way valve. See "2.24-way valve" on
page38.
Possible cause: Faulty 4‑way valve.
7Perform a check of the expansion valve. See "2.11Expansion
valve"on page54.
Possible cause: Faulty expansion valve.
1 Troubleshooting
Service manual
14
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.31 E7-00 – Fan lock abnormality
Trigger Effect Reset
Fan does NOT start
15~30seconds after
ON signal.
It can occur that the
error code is
triggered when the
fan motor is running
caused by a faulty
rotating sensor
signal.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the outdoor unit fan motor. See
"2.18Outdoor unit fan motor"on page73.
Possible cause: Faulty outdoor unit fan motor.
2Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.32 E8-00 – Input overvoltage abnormality
Trigger Effect Reset
Compressor running
current exceeds
standard value for
2.5seconds.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the outdoor temperature. See "3.5 External factors" on
page98.
Possible cause: Outdoor temperature is out of operation
range.
2Perform a check of the compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
3Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
4Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.33 E9-00 – Expansion valve abnormality
Trigger Effect Reset
No continuity of the
expansion valve.
Unit will stop
operating.
Manual reset via user
interface.
Minimum expansion
valve opening and
suction superheat <4
K and discharge
superheat <5 K.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of all refrigerant thermistors. See
"2.23Thermistors"on page82.
Possible cause: Faulty refrigerant thermistor(s).
2Perform a check of the expansion valve. See "2.11Expansion
valve"on page54.
Possible cause: Faulty expansion valve.
3Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
4Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
5Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.34 EA-00 – Cooling/Heating switch
abnormality
Trigger Effect Reset
Room thermistor is
NOT functioning
within operation
range.
Unit will NOT stop
operating.
Automatic reset after
a continuous
operation of
10minutes.
If the error occurs too
soon: unit will stop
operating.
Manual reset via user
interface.
1 Troubleshooting
Service manual
15
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the 4‑way valve. See "2.24-way valve" on
page38.
Possible cause: Faulty 4‑way valve.
2Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
3Perform a check of the room thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty room thermistor.
4Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.35 EC-00 – Domestic hot water temperature
increase
Trigger Effect Reset
Domestic hot water
tank thermistor
measures a
temperature >89°C.
Unit will NOT stop
operating.
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check the water circuit for an external heat source. See
"3.3Water circuit"on page95.
Possible cause: Increased water temperature due to an
external heat source.
2Perform a check of the domestic hot water tank thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty domestic hot water tank thermistor.
3Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.36 EC-04 – Tank preheating
Trigger Effect Reset
Unit is preheating the
tank.
Unit will NOT stop
operating.
Automatic reset.
To solve the error code
1No specific check / repair procedures must be performed to
solve this error code. The water in the heating system and the
tank is too cold to perform defrost operation, so the tank needs
to be preheated electrically. Wait until preheating operation is
done.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.37 F3-00 – Discharge pipe temperature stop
abnormality
Trigger Effect Reset
Discharge pipe
thermistor detects a
too high temperature.
Unit will NOT stop
operating.
Automatic reset when
temperature drops
normal level.
If the error re-occurs
too soon: unit will
stop operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
2Perform a check of the 4‑way valve. See "2.24-way valve" on
page38.
Possible cause: Faulty 4‑way valve.
3Perform a check of the expansion valve. See "2.11Expansion
valve"on page54.
Possible cause: Faulty expansion valve.
4Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
5Perform a check of all refrigerant thermistors. See
"2.23Thermistors"on page82.
Possible cause: Faulty refrigerant thermistor(s).
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.38 F6-00 – Stop due to cooling high pressure
Trigger Effect Reset
Outdoor heat
exchanger thermistor
measures
temperature
>60°C~65°C
Unit will NOT stop
operating.
Automatic reset when
temperature drops
below 50°C.
1 Troubleshooting
Service manual
16
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Clean the outdoor heat exchanger. See "4 Maintenance" on
page99.
Possible cause: Dirty outdoor heat exchanger.
2Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
3Perform a check of the heat exchanger thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty heat exchanger thermistor.
4Perform a check of the expansion valve. See "2.11Expansion
valve"on page54.
Possible cause: Faulty expansion valve.
5Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
6Perform a check of the outdoor unit fan motor. See
"2.18Outdoor unit fan motor"on page73.
Possible cause: Faulty outdoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.39 FA-00 – Abnormal high pressure
Trigger Effect Reset
Outdoor heat
exchanger thermistor
measures
temperature
>60°C~65°C
Unit will NOT stop
operating.
Automatic reset when
temperature drops
below 50°C.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Clean the outdoor heat exchanger. See "4 Maintenance" on
page99.
Possible cause: Dirty outdoor heat exchanger.
2Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
3Perform a check of the heat exchanger thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty heat exchanger thermistor.
4Perform a check of the expansion valve. See "2.11Expansion
valve"on page54.
Possible cause: Faulty expansion valve.
5Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
6Perform a check of the outdoor unit fan motor. See
"2.18Outdoor unit fan motor"on page73.
Possible cause: Faulty outdoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.40 H0-00 – Current sensor abnormality
Trigger Effect Reset
Compressor voltage
(DC) is out of range
before start‑up.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
2Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
3Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.41 H1-00 – Option thermistor abnormality
Trigger Effect Reset
Optional external
indoor or outdoor
ambient thermistor
input is out of range.
Unit will NOT stop
operating.
Automatic reset when
input is in range.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the external indoor or outdoor ambient
thermistor. See "2.23Thermistors"on page82.
Possible cause: Faulty external indoor or outdoor ambient
thermistor.
1 Troubleshooting
Service manual
17
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
2Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.42 H3-00 – High pressure switch defect
Trigger Effect Reset
High pressure switch
is activated when
compressor is off.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the high pressure switch. See "2.13 High
pressure switch"on page57.
Possible cause: Faulty high pressure switch.
2Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
3Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
4Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
5Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.43 H6-00 – Location detection sensor
abnormality
Trigger Effect Reset
Compressor fails to
start within
15seconds after the
compressor run
command signal is
sent.
Unit will NOT stop
operating.
Automatic reset after
a continuous
operation of
10minutes.
If the error re-occurs
within 8minutes: unit
will stop operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
2Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
3Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
4Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
5Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.44 H8-00 – Compressor input abnormality
Trigger Effect Reset
DC voltage or current
sensor abnormality
based on the
compressor running
frequency and the
input current.
Unit will NOT stop
operating.
Automatic reset when
compressor runs
normally for
60minutes.
If the error re-occurs
too soon: unit will
stop operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
2Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
3Perform a check of the compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
4Perform a check of the reactor. See "2.20 Reactor" on
page78.
1 Troubleshooting
Service manual
18
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Possible cause: Faulty reactor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.45 H9-00 – Outdoor air thermistor
abnormality
Trigger Effect Reset
Outdoor air thermistor
input is out of range.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the outdoor air thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty outdoor air thermistor.
2Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.46 HC-00 – Lower domestic hot water tank
thermistor abnormality
Trigger Effect Reset
(Lower) domestic hot
water tank thermistor
input is out of range.
Unit will NOT stop
operating.
Automatic reset when
resistance is within
range.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the domestic hot water tank thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty domestic hot water tank thermistor.
2Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.47 J3-00 – Discharge pipe thermistor
dislocation abnormality
Trigger Effect Reset
Discharge pipe
thermistor input is out
of range.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the discharge pipe thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty discharge pipe thermistor.
2Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.48 J6-00 – Outdoor heat exchanger
thermistor abnormality
Trigger Effect Reset
Outdoor heat
exchanger thermistor
input is out of range.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the heat exchanger thermistor. See
"2.23Thermistors"on page82.
Possible cause: Faulty heat exchanger thermistor.
2Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.49 JA-00 – Pressure sensor abnormality
Trigger Effect Reset
Refrigerant pressure
sensor detects a
value out of range
(>4.5MPa or <–
0.05MPa).
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the refrigerant pressure sensor. See
"2.21Refrigerant pressure sensor"on page79.
Possible cause: Faulty refrigerant pressure sensor.
2Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1 Troubleshooting
Service manual
19
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
1.4.50 L3-00 – Electrical component temperature
abnormality
Trigger Effect Reset
Switch box
temperature is too
high.
Unit will stop
operating.
Manual reset via
remote controller.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
2Perform a check of the outdoor unit fan motor. See
"2.18Outdoor unit fan motor"on page73.
Possible cause: Faulty outdoor unit fan motor.
3Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
4Clean the outdoor heat exchanger. See "4 Maintenance" on
page99.
Possible cause: Dirty outdoor heat exchanger.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.51 L4-00 – Fin temperature increase
abnormality
Trigger Effect Reset
Radiating fin
thermistor measures
a too high
temperature.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the outdoor unit fan motor. See
"2.18Outdoor unit fan motor"on page73.
Possible cause: Faulty outdoor unit fan motor.
2Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
3Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
4Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
5Check that the silicon grease is applied properly on the
radiation fin of the outdoor unit PCB. Adjust if needed.
Possible cause: Silicon grease NOT applied properly on the
radiation fin.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.52 L5-00 – Output over current abnormality
Trigger Effect Reset
An output overcurrent
is detected by
checking the current
that flows in the
inverter DC section.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
2Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
Possible cause: Faulty power module = inverter PCB.
3Perform a check of the compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
4Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.53 P4-00 – Fin thermistor abnormality
Trigger Effect Reset
Radiating fin
thermistor input is out
of range.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the inverter PCB. See "2.15 Inverter
PCB"on page61.
1 Troubleshooting
Service manual
20
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Possible cause: Faulty power module = inverter PCB.
2Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.54 U0-00 – Shortage of refrigerant
Trigger Effect Reset
Refrigerant shortage
detected.
Unit will stop
operating.
Automatic reset.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of all refrigerant thermistors. See
"2.23Thermistors"on page82.
Possible cause: Faulty refrigerant thermistor(s).
2Perform a check of the refrigerant circuit. See "3.2Refrigerant
circuit"on page92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
3Perform a check of the compressor. See "2.8 Compressor" on
page50.
Possible cause: Faulty compressor.
4Perform a check of the expansion valve. See "2.11Expansion
valve"on page54.
Possible cause: Faulty expansion valve.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.55 U3-00 – Under floor heating screed dry
out stop
Trigger Effect Reset
Under floor heating
screed dry-out is
interrupted.
Unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.56 U4-00 – Indoor/outdoor transmission
abnormality
Trigger Effect Reset
Communication
failure between
outdoor and indoor
unit.
Unit will stop
operating.
Power reset via
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1Check if the power supply is conform with the regulations. See
"3.1Power supply"on page91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
2Perform a check of the power supply, connections, wiring,…
between the outdoor unit, indoor unit and domestic hot water
tank. See "3.1Power supply"on page91.
Possible cause: Faulty wiring between the outdoor unit,
indoor unit and domestic hot water tank.
3Perform a check of the main PCB. See "2.17 Main PCB" on
page66.
Possible cause: Faulty main PCB.
4Perform a check of the outdoor unit fan motor. See
"2.18Outdoor unit fan motor"on page73.
Possible cause: Faulty outdoor unit fan motor.
5Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.57 U5-00 – Remote control transmission
defect
Trigger Effect Reset
Communication
failure between
indoor unit and user
interface.
Unit will stop
operating.
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Other manuals for Altherma EBLQ011CAV3
1
This manual suits for next models
19
Table of contents
Other Daikin Air Conditioner manuals
Daikin
Daikin FXDQ20M9 Instruction manual
Daikin
Daikin ERLQ004CA How to use
Daikin
Daikin AZQS-BV1 Instruction manual
Daikin
Daikin 2MXM50A2V1B How to use
Daikin
Daikin MKM24PV2S User manual
Daikin
Daikin FTKM25PVM User manual
Daikin
Daikin RXM18WVJU9 User manual
Daikin
Daikin 3MXS40K2V1B User manual
Daikin
Daikin Skyair FHC35K User manual
Daikin
Daikin FAQ100BUV1B x 2 User manual
Daikin
Daikin RXYSCQ4TMV1B User guide
Daikin
Daikin Maverick II MPS062E Manual
Daikin
Daikin VRV IV Series User manual
Daikin
Daikin EWYQ080DAYN User manual
Daikin
Daikin RX09QMVJU User manual
Daikin
Daikin SUPER MULTI NX FDXS09LVJU User manual
Daikin
Daikin FXAQ20PVE User manual
Daikin
Daikin ARX20K5V1B9 User manual
Daikin
Daikin Altherma 3 R W How to use
Daikin
Daikin GPGM5 User manual
