Daikin R32 Sky-Air RZAG-M User manual

Service
Manual
R32 Sky-Air RZAG-M
ESIE17-08
Indoor unit Outdoor unit
FCAHG/FCAG/FFA/FBA/
FDA/FAA/FHA/FUA/FVA/
FNA 71~140
RZAG-MV/Y
RZASG-MV/Y

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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..

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Part 1. Introduction ....................................................................................................................7
1.1. Version log .................................................................................................................................................7
1.2. Safety precautions .....................................................................................................................................8
1.2.1. Meaning of symbols ....................................................................................................................................... 8
1.2.2. Warnings ........................................................................................................................................................ 8
1.2.3. Cautions ....................................................................................................................................................... 10
1.2.4. Information ................................................................................................................................................... 11
1.3. General operation ....................................................................................................................................12
1.4. How to use ...............................................................................................................................................13
1.4.1. Interactive information flow ........................................................................................................................... 13
1.4.2. Parts of the book .......................................................................................................................................... 14
1.4.2.1. The introduction chapter .......................................................................................................................... 14
1.4.2.2. The troubleshooting chapter .................................................................................................................... 14
1.4.2.3. The repair chapter .................................................................................................................................... 14
1.4.2.4. The maintenance chapter ........................................................................................................................ 14
1.4.2.5. Appendices .............................................................................................................................................. 14
1.4.3. Contact information ...................................................................................................................................... 14
Part 2. Troubleshooting ...........................................................................................................15
2.1. Error codes check ....................................................................................................................................15
2.1.1. Error codes via remote controller ................................................................................................................. 15
2.1.1.1. Error codes via wired remote controller BRC1E ...................................................................................... 15
2.1.1.2. Error codes via wireless remote controller BRC7 .................................................................................... 17
2.1.2. Error codes via outdoor unit PCB ................................................................................................................. 19
2.1.2.1. How to retrieve error codes ...................................................................................................................... 19
2.1.2.2. How to reset error codes .......................................................................................................................... 21
2.1.2.3. History of error codes and warnings ........................................................................................................ 22
2.1.2.4. Content of retry ........................................................................................................................................ 22
2.2. Error based troubleshooting .....................................................................................................................23
2.2.1. Indoor unit .................................................................................................................................................... 24
2.2.1.1. “A1-01” – Indoor unit PCB abnormality .................................................................................................... 24
2.2.1.2. “A3-00” – Drain water level system abnormality ...................................................................................... 24
2.2.1.3. “A6-00” – Indoor unit fan motor abnormality ............................................................................................ 24
2.2.1.4. “AJ-00” – Capacity setting abnormality .................................................................................................... 25
2.2.1.5. “C1-00” – Transmission error (indoor & adapter PCB) ............................................................................ 25
2.2.1.6. “C4-00” – Liquid pipe thermistor for heat exchanger abnormality ............................................................ 26
2.2.1.7. “C5-00” – Intermediate heat exchanger thermistor abnormality .............................................................. 26
2.2.1.8. “C9-00” – Suction air thermistor abnormality ........................................................................................... 26
2.2.1.9. “CC-00” – Humidity sensor system abnormality ...................................................................................... 27
2.2.1.10. “CJ-00” – Remote controller thermistor abnormality .............................................................................. 27
2.2.2. Outdoor unit .................................................................................................................................................. 28
2.2.2.1. “E1-00” – Outdoor unit PCB abnormality ................................................................................................. 28
2.2.2.2. “E3-00” – Discharge pressure abnormality .............................................................................................. 28
2.2.2.3. “E4-00” – Suction pressure abnormality .................................................................................................. 29
2.2.2.4. “E5-00” – Compressor motor lock or overheated ..................................................................................... 29
2.2.2.5. “E7-00” – Fan motor abnormality ............................................................................................................. 30
2.2.2.6. “E9-00” – Electronic expansion valve abnormality ................................................................................... 30
2.2.2.7. “F3-00” – Discharge pipe temperature abnormality ................................................................................. 31
2.2.2.8. “H3-00” – High pressure switch abnormality ............................................................................................ 32
2.2.2.9. “H4-00” – Low pressure switch abnormality ............................................................................................. 32
2.2.2.10. “H9-00” – Outdoor air temperature thermistor abnormality .................................................................... 32
2.2.2.11. “J3-00” – Discharge pipe thermistor abnormality ................................................................................... 33
2.2.2.12. “J5-00” – Suction pipe thermistor abnormality ....................................................................................... 33
2.2.2.13. “J6-00” – Outdoor heat exchanger thermistor abnormality .................................................................... 33
2.2.2.14. “J7-00” – Intermediate heat exchanger thermistor abnormality ............................................................. 34
2.2.2.15. “J8-00” – Liquid pipe thermistor abnormality .......................................................................................... 34
2.2.2.16. “L1-00” – Outdoor main PCB abnormality .............................................................................................. 34
2.2.2.17. “L5-00” – Inverter instantaneous overcurrent (AC output) ..................................................................... 35

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2.2.2.18. “L8-00” – Electronic thermal overload .................................................................................................... 36
2.2.2.19. “L9-00” – Stall prevention time lag .........................................................................................................36
2.2.2.20. “LC-00” – Transmission system abnormality .......................................................................................... 37
2.2.2.21. “P1-00” – Open phase or power supply voltage imbalance ...................................................................37
2.2.2.22. “P4-00” – Radiating fin temperature sensor abnormality .......................................................................38
2.2.2.23. “PJ-00” – Capacity setting abnormality ..................................................................................................38
2.2.3. System ......................................................................................................................................................... 39
2.2.3.1. “U0-00” – Refrigerant shortage ................................................................................................................39
2.2.3.2. “U1-00” – Reverse phase or open phase .................................................................................................39
2.2.3.3. “U2-00” – Power supply abnormality or instantaneous power failure .......................................................40
2.2.3.4. “U4-00” – Transmission abnormality between indoor unit and outdoor unit .............................................40
2.2.3.5. “UA-00” – Improper combination of indoor unit and outdoor unit .............................................................41
2.2.3.6. “UF-00” – Wiring and piping mismatch .....................................................................................................41
2.2.4. Others .......................................................................................................................................................... 42
2.3. Symptom based troubleshooting ............................................................................................................ 43
2.3.1. Indoor unit .................................................................................................................................................... 43
2.3.2. Outdoor unit ................................................................................................................................................. 43
2.3.3. System ......................................................................................................................................................... 43
2.3.4. Others .......................................................................................................................................................... 43
2.4. Component checklist ............................................................................................................................... 44
2.4.1. Indoor unit .................................................................................................................................................... 45
2.4.1.1. Fan motor .................................................................................................................................................45
2.4.2. Outdoor unit ................................................................................................................................................. 46
2.4.2.1. 4-way valve .............................................................................................................................................. 46
2.4.2.2. Compressor ..............................................................................................................................................48
2.4.2.3. Electronic expansion valve ....................................................................................................................... 50
2.4.2.4. Fan motor .................................................................................................................................................52
2.4.2.5. High pressure switch ................................................................................................................................ 53
2.4.2.6. Low pressure switch ................................................................................................................................. 54
2.4.2.7. Main PCB ................................................................................................................................................. 55
2.4.2.8. Refrigerant thermistors .............................................................................................................................57
2.4.3. System ......................................................................................................................................................... 60
2.4.4. Others .......................................................................................................................................................... 60
2.5. Other capacity range ............................................................................................................................... 60
Part 3. Repair ............................................................................................................................61
3.1. Refrigerant repair procedures ................................................................................................................. 61
3.1.1. Refrigerant piping handling .......................................................................................................................... 61
3.1.2. Recovery procedure ..................................................................................................................................... 61
3.1.2.1. Outdoor unit casing .................................................................................................................................. 61
3.1.3. Refrigerant pump down ................................................................................................................................ 63
3.1.3.1. Small outdoor unit .................................................................................................................................... 63
3.1.3.2. Large outdoor unit .................................................................................................................................... 64
3.1.4. Piping repair procedures .............................................................................................................................. 64
3.2. Service tools ........................................................................................................................................... 65
3.3. Unit specific repair procedures ............................................................................................................... 66
3.3.1. Indoor unit .................................................................................................................................................... 66
3.3.2. Outdoor unit ................................................................................................................................................. 67
3.3.2.1. Basic removal ........................................................................................................................................... 67
3.3.2.2. Replacing thermistor ................................................................................................................................73
3.3.2.3. Replacing 4-way valve body ....................................................................................................................75
3.3.2.4. Replacing 4-way valve coil ....................................................................................................................... 76
3.3.2.5. Replacing accumulator assembly ............................................................................................................77
3.3.2.6. Replacing compressor .............................................................................................................................77
3.3.2.7. Replacing DC fan motor assembly ...........................................................................................................80
3.3.2.8. Replacing electrical noise filter .................................................................................................................81
3.3.2.9. Replacing expansion valve body ..............................................................................................................83
3.3.2.10. Replacing expansion valve motor ..........................................................................................................85
3.3.2.11. Replacing solenoid valve ....................................................................................................................... 86
3.3.2.12. Replacing solenoid valve coil ................................................................................................................. 88

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3.3.2.13. Replacing high pressure switch ............................................................................................................. 89
3.3.2.14. Replacing inverter PCB .......................................................................................................................... 90
3.3.2.15. Replacing low pressure switch ............................................................................................................... 90
3.3.2.16. Replacing main PCB .............................................................................................................................. 92
3.3.2.17. Replacing propeller fan blade assembly ................................................................................................ 99
Part 4. Maintenance ...............................................................................................................101
4.1. Indoor unit ..............................................................................................................................................101
4.1.1. General maintenance indoor unit ............................................................................................................... 101
4.2. Outdoor unit ...........................................................................................................................................102
4.2.1. General maintenance outdoor unit ............................................................................................................. 102
Part 5. Appendix .....................................................................................................................103
5.1. Field setting ...........................................................................................................................................105
5.1.1. Indoor unit .................................................................................................................................................. 105
5.1.1.1. Retrieve field settings BRC1E ................................................................................................................ 105
5.1.1.2. Retrieve field settings BRC7 .................................................................................................................. 107
5.1.1.3. Sky-Air R32 indoor field settings ............................................................................................................ 108
5.1.2. Outdoor unit ................................................................................................................................................ 109
5.1.2.1. Retrieve field settings OU mode 1 / mode 2 .......................................................................................... 109
5.1.3. Remote controller ....................................................................................................................................... 110
5.2. Detailed information setting mode .........................................................................................................111
5.2.1. Indoor unit .................................................................................................................................................. 111
5.2.2. Outdoor unit ................................................................................................................................................ 111
5.2.3. Remote controller ....................................................................................................................................... 113
5.2.3.1. Quiet (Low Noise) Operation ................................................................................................................. 113
5.2.3.2. I-Demand Function ................................................................................................................................ 114
5.2.3.3. Setting for Low Humidity Application ..................................................................................................... 114
5.2.3.4. Defrost Operation ................................................................................................................................... 117
5.3. Wiring diagram .......................................................................................................................................119
5.3.1. Indoor unit .................................................................................................................................................. 119
5.3.2. Outdoor unit ................................................................................................................................................ 120
5.3.3. Field wiring ................................................................................................................................................. 123
5.4. Piping diagram .......................................................................................................................................124
5.4.1. Indoor unit .................................................................................................................................................. 124
5.4.2. Outdoor unit ................................................................................................................................................ 124
5.5. Component overview of unit ..................................................................................................................125
5.5.1. Indoor unit .................................................................................................................................................. 125
5.5.2. Outdoor unit ................................................................................................................................................ 126
5.6. Product specific information ...................................................................................................................128
5.6.1. Error codes ................................................................................................................................................. 128
5.6.1.1. “E9-00” - Electronic expansion valve abnormality .................................................................................. 128
5.6.1.2. “F3-00” - Discharge pipe temperature abnormality ................................................................................ 128
5.6.2. Component checklist .................................................................................................................................. 128
5.6.2.1. How to activate inverter test ................................................................................................................... 128
5.6.2.2. Component checklist .............................................................................................................................. 128
5.7. Switch box ..............................................................................................................................................129
5.7.1. Indoor unit .................................................................................................................................................. 129
5.7.2. Outdoor unit ................................................................................................................................................ 129
5.8. Field information report ..........................................................................................................................129

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Figure 3-1: 1 service port at the stop valves ............................................................................................................ 62
Figure 3-2: 3 service ports at the stop valves .......................................................................................................... 63
Figure 3-3: Removing the top plate assembly .......................................................................................................... 67
Figure 3-4: Removing the front plate ........................................................................................................................ 69
Figure 3-5: Removing the front plate assembly ....................................................................................................... 70
Figure 3-6: Removing the cover ............................................................................................................................... 71
Figure 3-7: Removing the piping cover .................................................................................................................... 71
Figure 3-8: Removing the right side plate ................................................................................................................ 72
Figure 3-9: Replacing a thermistor ........................................................................................................................... 73
Figure 3-10: Thermistor location .............................................................................................................................. 74
Figure 3-11: Removing 4-way valve body ................................................................................................................ 75
Figure 3-12: Removing 4-way valve body ................................................................................................................ 76
Figure 3-13: Removing stop valve mounting plate ................................................................................................... 78
Figure 3-14: Removing compressor ......................................................................................................................... 79
Figure 3-15: Removing the DC fan motor assembly ................................................................................................ 81
Figure 3-16: Removing the electrical noise filter (1-phase) ...................................................................................... 82
Figure 3-17: Removing the electrical noise filter (3-phase) ...................................................................................... 83
Figure 3-18: Removing expansion valve .................................................................................................................. 84
Figure 3-19: Removing expansion valve motor ........................................................................................................ 85
Figure 3-20: Removing expansion valve motor ........................................................................................................ 86
Figure 3-21: Removing solenoid valve ..................................................................................................................... 87
Figure 3-22: Removing solenoid valve coil .............................................................................................................. 88
Figure 3-23: Removing high pressure switch ........................................................................................................... 89
Figure 3-24: Removing low pressure switch ............................................................................................................ 91
Figure 3-25: Installation ............................................................................................................................................ 91
Figure 3-26: Removing the main PCB assembly (1-phase) ..................................................................................... 93
Figure 3-27: Stripping the main PCB assembly 1-phase (rear) ................................................................................ 94
Figure 3-28: Removing the main PCB assembly (3-phase) ..................................................................................... 96
Figure 3-29: Stripping the main PCB assembly 3-phase (front) ............................................................................... 97
Figure 3-30: Stripping the main PCB assembly 3-phase (rear) ................................................................................ 98
Figure 3-31: Removing the propeller fan blade assembly ........................................................................................ 99
Figure 5-1: Wiring diagram - indoor unit ................................................................................................................. 119
Figure 5-2: Wiring diagram - outdoor unit RZAG-MY1, RZASG-MY1, AZAS-MY1 ................................................ 120
Figure 5-3: Wiring diagram - outdoor unit AZAS71MV1, RZASG71MV1 ............................................................... 121
Figure 5-4: Wiring diagram - outdoor unit RZAG71MV1, RZASG100MV1, AZAS100MV1 .................................... 122
Figure 5-5: Wiring diagram - outdoor unit RZAG100-140MV1, RZASG125-140MV1, AZAS125-140MV1 ............ 123
Figure 5-6: Piping diagram - indoor unit ................................................................................................................. 124
Figure 5-7: Piping diagram - outdoor unit ............................................................................................................... 124
Figure 5-8: Components overview - indoor unit ..................................................................................................... 125
Figure 5-9: Components overview - outdoor unit 71 .............................................................................................. 126
Figure 5-10: Components overview - outdoor unit 100-140 ................................................................................... 127

ESIE17-08 | Part 1. Introduction 1.1. Version log
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R32 Sky-Air RZAG-M
Part 1. Introduction
This part contains the following chapters:
1.1. Version log
Version log..............................................................................................................................................................................................7
Safety precautions..................................................................................................................................................................................8
General operation.................................................................................................................................................................................12
How to use ...........................................................................................................................................................................................13
Version code Description Date
ESIE17-08 Document release 15/11/2018

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R32 Sky-Air RZAG-M
1.2. Safety precautions
The precautions described in this document cover very important topics, follow them carefully.
All activities described in the service manual must be performed by an authorized person.
If you are not sure how to install, operate or service the unit, contact your dealer.
In accordance with the applicable legislation, it might be necessary to provide a logbook with the product containing at least:
information on maintenance, repair work, results of tests, stand-by periods, …
Also, at least, following information must be provided at an accessible place at the product:
• Instructions for shutting down the system in case of an emergency
• Name and address of fire department, police and hospital
• Name, address and day and night telephone numbers for obtaining service
In Europe, EN378 provides the necessary guidance for this logbook.
1.2.1. Meaning of symbols
1.2.2. Warnings
WARNING
Indicates a situation that could result in death or serious injury.
WARNING: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
WARNING: RISK OF BURNING
Indicates a situation that could result in burning because of extreme hot or cold temperatures.
WARNING: RISK OF EXPLOSION
Indicates a situation that could result in explosion.
WARNING: RISK OF POISONING
Indicates a situation that could result in poisoning.
WARNING: RISK OF FIRE
Indicates a situation that could result in fire.
CAUTION
Indicates a situation that could result in equipment or property damage.
INFORMATION
Indicates useful tips or additional information.
WARNING
Improper installation or attachment of equipment or accessories could result in electric shock, short-circuit, leaks, fire or
other damage to the equipment. Only use accessories, optional equipment and spare parts made or approved by Dai-
kin.

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WARNING
Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions
described in the Daikin documentation).
WARNING
Make sure the work site environment is clean and safe to work in. Beware of spilled fluids, like water, oil or other sub-
stances. Protect bystanders from injury and property from possible damage cause by service works.
WARNING
Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or ser-
vicing the system.
WARNING
Tear apart and throw away plastic packaging bags so that nobody, especially children, can play with them. Possible risk:
suffocation.
WARNING
Do NOT touch the air inlet or aluminium fins of the unit.
WARNING
• Do NOT place any objects or equipment on top of the unit.
• Do NOT sit, climb or stand on the unit.
WARNING
During tests, NEVER pressurize the product with a pressure higher than the maximum allowable pressure (as indicated
on the nameplate of the unit).
WARNING
• Never mix different refrigerants or allow air to enter the refrigerant system.
• Never charge recovered refrigerant from another unit. Use recovered refrigerant only on the same unit where it was
recovered from, or have it recycled at a certified facility.
WARNING: RISK OF FIRE
• When reconnecting a connector to the PCB, do not apply force or damage the connector or the connector pins on the
PCB.
WARNING: RISK OF BURNING
• Do NOT touch the refrigerant piping, water piping or internal parts during and immediately after operation. It could be
too hot or too cold. Give it time to return to normal temperature. If you must touch it, wear protective gloves.
• Do NOT touch any accidental leaking refrigerant.
WARNING
Always recover the refrigerants. Do NOT release them directly into the environment. Use a recovery pump to evacuate
the installation.
Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately.
Possible risks:
• Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency.
• Toxic gas may be produced if refrigerant gas comes into contact with fire.
Where applicable, pump down the system and close the service valve, before leaving the site if leak was not repaired, to
avoid further leaking of the refrigerant.
WARNING: RISK OF ELECTROCUTION
• Turn OFF all power supply before removing the switch box cover, connecting electrical wiring or touching electrical
parts. Where applicable, stop the equipment's operation first and allow (refrigerant) pressure to equalize, before
turning OFF the power. Disconnect the power supply for more than 1 minute, and measure the voltage at the
terminals of main circuit capacitors or electrical components before servicing. The voltage must be less than 50 V DC
before you can touch electrical components. For the location of the terminals, refer to "Wiring diagram" on page 119.
• Do NOT touch electrical components with wet hands.
• Do NOT leave the unit unattended when the service cover is removed.
• Protect electric components from getting wet while the service cover is opened.

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1.2.3. Cautions
WARNING
• Only use copper wires.
• All field wiring must be performed in accordance with the wiring diagram and installation manual supplied with the
product.
• If the power cable and lead wires have scratches or deteriorated, be sure to replace them. Damaged cable and wires
may cause an electrical shock, excessive heat generation or fire.
• Secure all terminal connections and provide proper routing for cables, both inside and outside the switchbox.
• NEVER squeeze bundled cables and make sure they do not come in contact with the piping and sharp edges.
• Make sure no external pressure is applied to the terminal connections.
• Make sure to check the earth wiring. Do NOT earth the unit to a utility pipe, surge absorber, or telephone earth.
Improper earth wiring may cause electrical shock.
• Make sure to use a dedicated power circuit. NEVER use a power supply shared by another appliance.
• Make sure to check the required fuses and/or circuit breakers before starting works.
WARNING
• After finishing the electrical work, confirm that each electrical component and terminal inside the electrical
components box is connected securely.
• Make sure all covers are closed before starting the unit again.
WARNING
• The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician
is aware of potentially toxic or flammable atmospheres.
• Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e.
non-sparking, adequately sealed or intrinsically safe.
WARNING
• Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant.
• The label shall be dated and signed.
• For appliances containing flammable refrigerants, ensure that there are labels on the equipment stating the
equipment contains flammable refrigerant.
CAUTION
Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make
contact with electrical parts can cause malfunctions, smoke or fire.
CAUTION
• Make sure water quality complies with EU directive 98/83 EC.
• Check the system for leaks after each repair/modification of the water side.
• Check drainage system(s) after repairs.
• Be careful when tilting units as water may leak.

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1.2.4. Information
INFORMATION
Make sure refrigerant piping installation complies with applicable legislation. In Europe, EN378 is the applicable stand-
ard.
INFORMATION
Make sure the field piping and connections are not subjected to stress.

ESIE17-08 | Part 1. Introduction 1.3. General operation
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R32 Sky-Air RZAG-M
1.3. General operation
• The Sky-Air is typically used for cooling or heating in commercial applications. Some units also have settings to perform
technical cooling. The medium which is used to transfer the heat from inside to outside or vice versa, is refrigerant. In case of
the RZAG-M, the refrigerant which is used, is R32.
• In case of heating, the compressor builds up pressure and hence the temperature of the refrigerant is increased. The hot
refrigerant is blown into the room by a fan which blows over a heat exchanger. Colder refrigerant flows back to the outdoor
unit, where temperature is further decreased by expansion through an expansion valve. After the expansion valve, the
refrigerant is capable of taking up heat again. This is enabled by a fan that sucks outdoor air over a heat exchanger. This
refrigerant is then transported to the compressor where temperature is further built up again and the cycle starts again. For
cooling, it’s just the other way round.
1. Compressor 4. Outdoor heat exchanger
2. Indoor heat exchanger 5. 4-way valve
3. Expansion valve 6. Stop valves

ESIE17-08 | Part 1. Introduction 1.4. How to use
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R32 Sky-Air RZAG-M
1.4. How to use
1.4.1. Interactive information flow
This Daikin product Service Manual is intended for professional use only. The actions described hereafter, are only to be performed
by qualified and certified persons, taking into account the safety precautions mentioned in this manual and the local regulations as
well.
By following the diagram below, the reader can find the relevant information related to his/her task. The digital (pdf) version of this
book allows direct page access through all active links. When Adobe Acrobat Reader is used, the <Alt> + <Back Arrow> keys or
the arrow in the top right-hand corner of this page can be used to return to the previously viewed page.
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PART 2
Troubleshooting
How to retrieve
Error Codes
Component
checklist
PART 3
Repair
PART 4
Maintenance Installation
Error Code based
troubleshooting
Symptom based
troubleshooting
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1.4.2. Parts of the book
This Daikin product Service Manual is intended for professional use only. The actions described hereafter, are only to be performed
by qualified and certified persons, taking into account the safety precautions mentioned in this manual and the local regulations as
well.
As can be observed from the Table of Contents, this manual is split up into several chapters:
1.4.2.1. The introduction chapter
The chapter "Introduction" on page 7 includes the safety precautions, this topic and the general operation description of the
product(s) this manual refers to.
1.4.2.2. The troubleshooting chapter
The chapter "Troubleshooting" on page 15 not only deals with the methods to recognize and resolve occurring error codes; it also
describes the methods how to solve a problem that does not immediately trigger an error code. Such problems are referred to as
'symptom based'. Both the error code based and symptom based troubleshooting tables, indicate possible causes, the necessary
checks and in case required, how to repair. The possible causes have been sorted to probability of occurrence and speed of
execution.
1.4.2.3. The repair chapter
The chapter "Repair" on page 61 handles the removal and replacement of the major components in the product and discusses
cleaning methods as well if applicable, such as for filters. Where applicable, refrigerant handling precautions are mentioned for
certain actions; please consider these carefully for your own safety.
1.4.2.4. The maintenance chapter
The chapter "Maintenance" on page 101 of this manual describes the maintenance intervals and procedures to be performed on
the product. Remember that a well maintained product, is a more reliable and efficient product.
1.4.2.5. Appendices
Finally, the service manual provides in chapter "Appendix" on page 103 valuable reference data such as piping/wiring diagrams,
field settings overview and a checklist to be filled in when you need to escalate an issue to your dealer.
1.4.3. Contact information
This manual has been made with much care and effort. Use it in your daily jobs, as it has been made for you.
Despite our efforts, there is always a chance some cleric or other mistake has been made during the creation of this manual. We
kindly ask you to send the found mistakes, or remarks for improvement, to the no-reply email address
[email protected]m.

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Part 2. Troubleshooting
This part contains the following chapters:
2.1. Error codes check
2.1.1. Error codes via remote controller
2.1.1.1. Error codes via wired remote controller BRC1E
2.1.1.1.1 How to retrieve error codes
The following message will be displayed on the screen when a malfunction or a warning occurs during operation.
If an error or warning is present, it will be displayed on the user interface screen: for more information about troubleshooting, refer
to "Error based troubleshooting" on page 23.
Error codes check ................................................................................................................................................................................15
Error based troubleshooting .................................................................................................................................................................23
Symptom based troubleshooting..........................................................................................................................................................43
Component checklist ............................................................................................................................................................................44
Other capacity range ............................................................................................................................................................................60
1. Screen 3. ‘menu’ button
2. Operation lamp 4. ‘cancel’ button
Operation Status Display
Abnormal shut-down The system stops operating. The operation lamp (green) starts to
blink. The message “Error: Press
Menu button” will appear and blink at
the bottom of the screen.
Warning The system continues its operation. The operation lamp (green) remains
on. The message “Warning: Press
Menu button” will appear and blink at
the bottom of the screen.
1
2
3
4

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2.1.1.1.2 How to reset error codes
In "Error based troubleshooting" on page 23 you find a description of how to reset the specific error or warning.
2.1.1.1.3 History of error codes
.
<Basic screen>
8-1 Press and hold the Cancel button for
4 seconds or longer in the Basic
screen. The Service Settings menu is
displayed.
8-1
Press and hold the Cancel button for
4 seconds or longer while the backlight
is lit.
<Service Settings>
8-2 Select Error History and press the
Menu/Enter button. The Error History
menu is displayed
8-2
Press the Menu/Enter button.
8-3 Select RC Error History and press the
Menu/Enter button. The error codes
and unit No. can be confirmed in the
RC Error History screen.
8-3
Press the Menu/Enter button.
8-4 In the RC Error History screen the last
10 items are displayed in order.
8-4 1. Latest record
2. Unit no.
8-5 Press the Cancel button in the RC
Error History screen 3 times. The Basic
screen returns.
8-5
INFORMATION
The indoor unit error history of each indoor unit can be independently consulted. The last 5 items are displayed in
order of appearance.
Cool
Set to
28°C
2/3
Indoor Unit Airnet Address
Outdoor Unit Airnet Address
Error History
Indoor Unit Status
Outdoor Unit Status
Forced Fan ON
Service Settings
SettingReturn
2/2
RC Error History
Indoor Unit Error History
Error History
SettingReturn
1/3
Unit Error Date Time
RC Error History
Return
12

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2.1.1.2. Error codes via wireless remote controller BRC7
2.1.1.2.1 How to retrieve error codes
If the unit stops due to an error, the operation indicating LED on the indoor unit flashes.
The error code can be determined through the wireless remote controller by following the procedure described below.
If an error or warning is present, it will be displayed on the screen: for more information about troubleshooting, refer to "Error based
troubleshooting" on page 23.
1 Press the INSPECTION/TEST button to select “inspection”. The equipment enters the
inspection mode. The “Unit” indication is displayed and the Unit No. display shows
flashing “0” indication.
2 Set the Unit No.
Press the UP or DOWN button and change the Unit No. display until the buzzer (*1) is
generated from the indoor unit.
*1 Number of beeps
3 short beeps: Conduct all of the following operations.
1 short beep: Conduct steps 3 and 4.
Continue the operation in step 4 until a buzzer remains ON. The continuous buzzer
indicates that the error code is confirmed.
Continuous beep: No abnormality.
3 Press the MODE selector button.
The left “0” (upper digit) indication of the error code flashes.
4 Error code upper digit diagnosis
Press the UP or DOWN button and change the error code upper digit until the error
code matching buzzer (*2) is generated.
• The upper digit of the code changes as shown below when the UP and DOWN
buttons are pressed.
*2 Number of beeps
Continuous beep: Both upper and lower digits matched. (Error code confirmed)
2 short beeps: Upper digit matched.
1 short beep: Lower digit matched.
5 Press the MODE selector button.
The right “0” (lower digit) indication of the error code flashes.
6 Error code lower digit diagnosis
Press the UP or DOWN button and change the error code lower digit until the continu-
ous error code matching buzzer (*2) is generated.
• The lower digit of the code changes as shown below when the UP and DOWN
buttons are pressed.
“UP” button “DOWN” button
“UP” button “DOWN” button

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2.1.1.2.2 How to reset error codes
In "Error based troubleshooting" on page 23 you find a description of how to reset the specific error or warning.
1 Press INSPECTION/TEST button.
Normal status
Enters inspection mode from normal status
when the INSPECTION/ TEST button is
pressed.
When MODE selector button
is pressed or no button is
pressed for 1 minute, equip-
ment returns to normal status.
3 Press
MODE
selector
button.
5 Press MODE selector button.

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2.1.2. Error codes via outdoor unit PCB
2.1.2.1. How to retrieve error codes
There are 2 ways to retrieve error codes through the outdoor unit:
1. Troubleshooting by LED on the outdoor main PCB
The following diagnosis can be conducted by turning on the power switch and checking the LED indication on the PCB of the
outdoor unit.
w: LED on / x: LED off / c: LED blinks / — : Not used for diagnosis
.
.
2. Troubleshooting by LED on the outdoor service PCB
Take the following steps to check the error or warning (malfunction):
LED detection
DescriptionHAP H1P
(Green) (Red)
cx Normal
w— Faulty outdoor unit PCB (Information 1)
x— Power supply abnormality, or faulty outdoor unit PCB (Information 2)
cwActivation of protection device (Information 3)
INFORMATION
1. Turn off the power switch, and turn it on again after 5 seconds or more. Check the error condition, and diagnose the
problem.
2. Turn off the power switch. After 5 seconds or more, disconnect the connection wire (2). Then turn on the power switch.
If the HAP on the outdoor unit PCB flashes after about 10 seconds, the PCB A1P is faulty.
3. Also check for open phase.
INFORMATION
The error detection monitor continues to indicate the previously generated error until the power switch is turned off.
Be sure to turn off the power switch after inspection.
To enter "Monitor mode," push the MODE (BS1)
button on A2P when in "Setting mode 1". (*)
<Display of RETURN 1>
<Display of RETURN 2>
<Display of RETURN 3>
Push the SET (BS2) button to set the LED
display to malfunction item according to
binary counting. (**)
When SET (BS2) button is pushed, the LED
display for RETURN 2 turns ON.
When SET (BS2) button is pushed, the LED
display for RETURN 3 turns ON.
Check the error code that matches the LED
sequence (see table on next page).
Push the RETURN (BS3) button to return the
system to the initial state of "Monitor mode".
When the RETURN (BS3) button is pushed,
the LED display for RETURN 1 turns ON.
! Pushing the MODE (BS1) button will bring the
system to the "Setting mode 1".

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(*) Using the MODE button, the modes can be changed as follows.
(**)
HAP H1P H2P H3P H4P H5P H6P H7P
LED-status: wwwwwwww
|||||||
Binarycounting:value: 6432168421
|||||||
Setting item: 14= latest error= w x x www x
15= previous error= w x x wwww
16= 2 before= wxwx x x x
MODE
H1P
On Off Blinking
MODE
H1P
MODE
H1P
Setting mode 2 Setting mode 1 Monitor mode
Push and hold the BS1 (MODE button)
for 5 seconds.
Push the BS1 (MODE button)
one time.
Push the BS1 (MODE button)
one time.
(Normal)