Daikin FAA71BUV1B User manual

Service manual
Sky Air indoor units
FAA71BUV1B
FAA100BUV1B

Disclaimer
Service manual
2
FAA71+100BUV1B
Sky Air indoor units
ESIE22-01 – 2022.02
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..

Version log
Service manual
3
FAA71+100BUV1B
Sky Air indoor units
ESIE22-01 – 2022.02
Version log
Version code Description Date
ESIE22-01 Document release February 2022

Table of Contents
Service manual
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ESIE22-01 – 2022.02
Table of Contents
1 Safety precautions 6
1.1 Meaning of warnings and symbols................................................................................................................................. 6
1.2 Dangers ........................................................................................................................................................................... 7
1.3 Warnings ......................................................................................................................................................................... 7
1.4 Cautions .......................................................................................................................................................................... 12
1.5 Notices ............................................................................................................................................................................ 12
2 General operation 14
3 Troubleshooting 16
3.1 To retrieve error codes and check error history ............................................................................................................ 16
3.1.1 Via service monitoring tool ............................................................................................................................ 16
3.1.2 Via the indoor unit remote controller BRC1H ............................................................................................... 16
3.1.3 Via the wired remote control BRC1E ............................................................................................................. 18
3.1.4 Via the wireless controller BRC7 .................................................................................................................... 20
3.1.5 Via the wired remote control BRC1D............................................................................................................. 21
3.2 To activate emergency operation................................................................................................................................... 22
3.3 Error based troubleshooting........................................................................................................................................... 24
3.3.1 A1-01 – Indoor unit PCB abnormality ............................................................................................................ 24
3.3.2 A3-00 – Drain water level abnormality .......................................................................................................... 25
3.3.3 A6-00 – Indoor unit fan motor abnormality .................................................................................................. 25
3.3.4 A8-00 – Fan motor abnormality - power supply abnormality....................................................................... 26
3.3.5 AJ-00 – Capacity setting abnormality............................................................................................................. 26
3.3.6 C1-02 – Communication abnormality between main PCB and option PCB.................................................. 27
3.3.7 C4-02 – Liquid heat exchanger thermistor short circuit................................................................................ 28
3.3.8 C4-03 – Liquid heat exchanger thermistor open circuit................................................................................ 28
3.3.9 C5-02 – Middle heat exchanger thermistor short circuit .............................................................................. 29
3.3.10 C5-03 – Middle heat exchanger thermistor open circuit .............................................................................. 29
3.3.11 C6-00 – Compatibility error between main PCB and fan PCB ....................................................................... 30
3.3.12 C9-02 – Suction air thermistor short circuit .................................................................................................. 30
3.3.13 C9-03 – Suction air thermistor open circuit................................................................................................... 31
3.3.14 CC-00 – Humidity sensor abnormality ........................................................................................................... 31
3.3.15 CJ-00 – Remote controller air thermistor abnormality ................................................................................. 32
3.3.16 U0-00 – Outdoor unit: Shortage of refrigerant ............................................................................................. 32
3.3.17 U1-00 – Malfunction by reverse phase/open phase ..................................................................................... 33
3.3.18 U2-00 – Outdoor unit: Defect of power supply voltage ................................................................................ 33
3.3.19 U4-00 – Indoor/outdoor unit communication problem................................................................................ 35
3.3.20 U5-00 – Communication abnormality between indoor unit main PCB and remote controller ................... 36
3.3.21 UA-00 – Indoor unit, outdoor unit mismatching problem ............................................................................ 37
3.3.22 UC-00 – Central address duplication error .................................................................................................... 37
3.3.23 UE-00 – Communication abnormality with central controller ...................................................................... 38
3.3.24 UF-00 – Reversed piping or bad communication wiring detection............................................................... 38
3.3.25 UJ-10 – Communication abnormality between indoor unit and wireless LAN adapter ............................... 39
3.3.26 UJ-11 – Wireless LAN adapter - Router connection abnormality ................................................................. 40
3.3.27 UJ-12 – Router - Cloud connection abnormality ........................................................................................... 40
3.4 Symptom based troubleshooting ................................................................................................................................... 41
3.4.1 Operation does not start................................................................................................................................ 41
3.4.2 Operation sometimes stops ........................................................................................................................... 41
3.4.3 Operation starts but the unit does not cool/heat ......................................................................................... 42
3.4.4 Operating noise and vibrations...................................................................................................................... 43
3.4.5 Abnormal high pressure ................................................................................................................................. 44
3.4.6 Abnormal low pressure .................................................................................................................................. 45
3.4.7 Indoor fan starts operating but the compressor does not operate.............................................................. 46
3.4.8 Operation starts and the unit stops immediately.......................................................................................... 47
3.4.9 Operation stops, unit cannot start for a while .............................................................................................. 47
3.4.10 Unit discharges white mist ............................................................................................................................. 48
3.4.11 Swing flap does not operate .......................................................................................................................... 48
4 Components 49
4.1 Drain pump ..................................................................................................................................................................... 49
4.2 Float switch ..................................................................................................................................................................... 49
4.3 Humidity sensor .............................................................................................................................................................. 49
4.4 Indoor unit fan motor ..................................................................................................................................................... 49
4.4.1 Checking procedures...................................................................................................................................... 49
4.4.2 Repair procedures .......................................................................................................................................... 52

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4.5 Indoor unit main PCB...................................................................................................................................................... 53
4.5.1 Checking procedures...................................................................................................................................... 53
4.5.2 Repair procedures .......................................................................................................................................... 58
4.6 Plate work ....................................................................................................................................................................... 60
4.6.1 To remove the front panel ............................................................................................................................. 60
4.6.2 To remove the front grille .............................................................................................................................. 61
4.6.3 To remove the electrical wiring box cover..................................................................................................... 62
4.6.4 To remove the switch box.............................................................................................................................. 63
4.6.5 To install the switch box................................................................................................................................. 64
4.6.6 To re-install the front grille ............................................................................................................................ 66
4.6.7 To re-install the front panel ........................................................................................................................... 66
4.7 Remote controller user interface ................................................................................................................................... 66
4.7.1 Checking procedures...................................................................................................................................... 66
4.7.2 Repair procedures .......................................................................................................................................... 68
4.8 Swing flap motor............................................................................................................................................................. 69
4.8.1 Main swing flap motor ................................................................................................................................... 69
4.8.2 Secondary swing flap motor........................................................................................................................... 73
4.9 Thermistors ..................................................................................................................................................................... 77
4.9.1 Checking procedures...................................................................................................................................... 77
4.9.2 Repair procedures .......................................................................................................................................... 80
5 Third party components 83
5.1 Electrical circuit............................................................................................................................................................... 83
5.1.1 Checking procedures...................................................................................................................................... 83
5.1.2 Repair procedures .......................................................................................................................................... 86
5.2 Refrigerant circuit ........................................................................................................................................................... 87
5.3 Manufacturer components ............................................................................................................................................ 87
5.3.1 Checking procedures...................................................................................................................................... 87
5.3.2 Repair procedures .......................................................................................................................................... 87
5.4 External factors ............................................................................................................................................................... 88
5.4.1 Checking procedures...................................................................................................................................... 88
6 Maintenance 89
6.1 To clean the indoor unit heat exchanger ....................................................................................................................... 89
6.2 To clean the indoor unit heat exchanger in extreme condition .................................................................................... 89
6.3 To clean the air outlet and exterior................................................................................................................................ 90
6.4 To clean the front panel ................................................................................................................................................. 90
6.5 To clean the air filters ..................................................................................................................................................... 91
7 Technical data 92
7.1 Detailed information setting mode ................................................................................................................................ 92
7.1.1 Detailed information setting mode: Indoor unit ........................................................................................... 92
7.1.2 Detailed information setting mode: Remote controller................................................................................ 92
7.2 Wiring diagram................................................................................................................................................................ 93
7.2.1 Wiring diagram: Indoor unit........................................................................................................................... 93
7.3 Piping diagram ................................................................................................................................................................ 97
7.3.1 Piping diagram: Indoor unit............................................................................................................................ 97
7.4 Component overview...................................................................................................................................................... 98
7.4.1 Component overview: Indoor unit................................................................................................................. 98
7.5 Field information report ................................................................................................................................................. 100
7.6 Service tools .................................................................................................................................................................... 103
7.7 Field settings ................................................................................................................................................................... 104
7.7.1 To retrieve the field settings .......................................................................................................................... 104
7.7.2 Overview of field settings for indoor units .................................................................................................... 112

1 | Safety precautions
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1 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.
1.1 Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING/SCALDING
Indicates a situation that could result in burning/scalding because of extreme hot or
cold temperatures.
DANGER: RISK OF EXPLOSION
Indicates a situation that could result in explosion.
WARNING
Indicates a situation that could result in death or serious injury.
WARNING: FLAMMABLE MATERIAL
CAUTION
Indicates a situation that could result in minor or moderate injury.
NOTICE
Indicates a situation that could result in equipment or property damage.

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INFORMATION
Indicates useful tips or additional information.
1.2 Dangers
DANGER: RISK OF BURNING/SCALDING
▪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.
DANGER: 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 10minutes, 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, see the wiring diagram. If the
measured voltage is still higher than 50VDC, discharge the capacitors in a safe
manner by using a dedicated capacitor discharge pen to avoid possibility of
sparking.
▪Do NOT touch electrical components with wet hands.
▪Do NOT leave the unit unattended when the service cover is removed.
▪Protect electric componennts from getting wet while the service cover is opened.
1.3 Warnings
WARNING
Improper installation or attachment of equipment or accessories could result in
electrical shock, short-circuit, leaks, fire or other damage to the equipment. ONLY
use accessories, optional equipment and spare parts made or approved by Daikin.
WARNING
Do NOT apply any permanent inductive or capacitance loads to the circuit without
ensuring that this will NOT exceed the permissible voltage and current permitted for
the equipment in use.

1 | Safety precautions
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WARNING
If a fault exists that could compromise safety, Do NOT connect electrical supply to
the circuit until it is satisfactorily dealt with. If the fault CANNOT be corrected
immediately but it is necessary to continue operation, an adequate temporary
solution MUST be used. This MUST be reported to the owner of the equipment so all
parties are advised.
Initial safety checks MUST include that:
▪capacitors are discharged: this MUST be done in a safe manner to avoid
possibility of sparking,
▪NO live electrical components and wiring are exposed while charging, recovering
or purging the system.
WARNING
Make sure that the refrigerating piping and components are installed in a position
where they are unlikely to be exposed to any corroding substance.
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 substances.
Protect bystanders from injury and property from possible damage cause by service
works.
WARNING
If any work is to be conducted on the refrigerating equipment or any associated parts
which involves brazing, an appropriate dry powder or CO2 fire extinguisher MUST be
present.
When charging the unit, an appropriate dry powder or CO2 fire extinguisher MUST be
present.
WARNING
No person carrying out work in relation to a refrigerating system which involves
exposing any pipe work shall use any sources of ignition in such a manner that it may
lead to the risk of fire or explosion. All possible ignition sources, including cigarette
smoking, MUST be kept sufficiently far away from the site of installation, repairing,
removing and disposal, during which refrigerant can possibly be released to the
surrounding space. Prior to work taking place, the area around the equipment is to
be surveyed to make sure that there are no flammable hazards or ignition risks. "No
Smoking" signs MUST be displayed.
WARNING
Tear apart and throw away plastic packaging bags so that nobody, especially
children, can play with them. Possible risk: suffocation.
WARNING
During tests, NEVER pressurise the product with a pressure higher than the
maximum allowable pressure (as indicated on the nameplate of the unit).

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WARNING
Make sure the total refrigerant charge is in accordance with the room size in which
the unit is installed: please consult the detailed instructions on charging and allowed
room sizes in the installation manual.
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
When reconnecting a connector to the PCB, make sure to connect it on the correct
location and do NOT apply force, as this may damage the connector or connector
pins of the PCB.
WARNING
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
WARNING
Removal of refrigerant MUST be according to the following:
When breaking into the refrigerant circuit to make repairs, be sure to remove the
refrigerant from the system first. The refrigerant charge MUST be recovered into the
correct recovery cylinders.
WARNING
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 might be produced if refrigerant gas comes into contact with fire.
WARNING
▪Under no circumstances, potential sources of ignition SHALL be used in the
searching for or detection of refrigerant leaks. A halide torch (or any other
detector using a naked flame) MUST NOT be used.
▪Ensure that the detector is NOT a potential source of ignition and is suitable for
the detection of R32.
▪If a leak is suspected, all naked flames MUST be removed or extinguished.
▪Leak detection fluids are also suitable for use with most refrigerants but the use
of detergents containing chlorine MUST be avoided as the chlorine may react
with the refrigerant and corrode the copper pipe-work.
▪If a leakage of refrigerant is found which requires brazing, all of the refrigerant
MUST be recovered from the system, or isolated (by means of shut‑off valves) in
a part of the system remote from the leak.
▪Only use the electronic leak tester for R32. The old flame leak tester CANNOT be
used on a system with HFC refrigerant because there is no chlorine component in
the refrigerant. In case of R32 (HFC) refrigerant, any flame in contact with
(leaking) refrigerant is extremely dangerous.

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WARNING
▪In order to prevent oxygen deficiency and R32 combustion, keep the room well-
ventilated for a healthy work environment. Do NOT work in a confined space. If a
refrigerant leak is detected in a confined room or an inadequately ventilated
location, do NOT start the work until the area has been ventilated appropriately.
▪If the work area is NOT located in the open air, make sure the work area is
adequately ventilated before breaking into the system or conducting any brazing.
The ventilation MUST continue to operate during the period that the work is
carried out to prevent accumulation of refrigerant in the work area. The
ventilation should safely disperse any released refrigerant and preferably
ventilate to the open air.
WARNING
Ensure that no external live wiring is exposed while charging, recovering or purging
the system. Sparks created when live wiring is short-circuited might ignite the
refrigerant if it is leaked into the room while charging, recovering or purging the
system.
WARNING
Ensure that the unit is properly earthed prior to conducting maintenance or service
or charging the system with refrigerant. Do NOT earth the unit to a utility pipe, surge
absorber, or telephone earth. Incomplete earthing may cause electrical shock.
WARNING
▪ONLY use copper wires.
▪Make sure the field wiring complies with the applicable legislation.
▪All field wiring MUST be performed in accordance with the wiring diagram
supplied with the product.
▪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 install earth wiring. Do NOT earth the unit to a utility pipe, surge
absorber, or telephone earth. Incomplete earth may cause electrical shock.
▪Make sure to use a dedicated power circuit. NEVER use a power supply shared by
another appliance.
▪Make sure to install the required fuses or circuit breakers.
▪Make sure to install an earth leakage protector. Failure to do so may cause
electrical shock or fire.
▪When installing the earth leakage protector, make sure it is compatible with the
inverter (resistant to high frequency electric noise) to avoid unnecessary opening
of the earth leakage protector.
WARNING
Make sure the markings on the unit remain visible and legible after inspection or
repair work. Markings and signs that are illegible shall be corrected.
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 up the unit.

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WARNING
▪The area MUST 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.
▪Prior to and during work, the area MUST be checked with an appropriate
refrigerant detector capable of detecting R32 refrigerant, to ensure a work
environment free of refrigerant.
WARNING
▪Equipment MUST be labelled stating that it has been de-commissioned and
emptied of refrigerant.
▪The label MUST be dated and signed.
▪For appliances containing flammable refrigerants, ensure that there are labels on
the equipment stating the equipment contains flammable refrigerant.
WARNING
Before carrying out refrigerant recovery procedure, it is essential that the technician
is completely familiar with the equipment and all its details. It is recommended good
practice that all refrigerants are recovered safely. Prior to the task being carried out,
an oil and refrigerant sample MUST be taken in case analysis is required prior to re-
use of recovered refrigerant. It is essential that electrical power is available before
the task is commenced.
▪Become familiar with the equipment and its operation.
▪Isolate system electrically.
▪Ensure that mechanical handling equipment is available, if required, for handling
refrigerant cylinders.
▪Ensure that all personal protective equipment is available and is used correctly.
▪Ensure that the recovery process is supervised at all times by a competent
person.
▪Ensure that recovery equipment and cylinders are conform to the appropriate
standards.
▪If a vacuum is NOT possible, make a manifold so that refrigerant can be removed
from various parts of the system.
▪Make sure that cylinder is situated on the scales before recovery takes place.
▪Start the recovery machine and operate in accordance with instructions.
▪Do NOT overfill the refrigerant cylinder, confirm with the supplier of the
refrigerant cylinder about maximum filling ratio if NOT mentioned on the
refrigerant cylinder itself.
▪Do NOT exceed the maximum working pressure of the cylinder, NOT even
temporarily.
▪When the cylinders have been filled correctly and the process completed, make
sure that the cylinders and the equipment are removed from site promptly and
all isolation valves on the equipment are closed.
▪Recovered refrigerant MUST NOT be charged into another refrigerating system
unless it has been cleaned and checked.
WARNING
All maintenance staff and others working in the local area MUST be instructed on the
nature of work being carried out.

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WARNING
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.
WARNING
Prior to start working on systems containing flammable refrigerant, safety checks are
necessary to ensure that the risk of ignition is minimised. Therefore, some
instructions should be followed.
Please refer to the service manual for more information.
WARNING
If compressor is to be removed, ensure that the compressor has been evacuated to
an acceptable level to make sure that flammable refrigerant does NOT remain within
the lubricant. The evacuation process MUST be carried out prior to returning the
compressor to the supplier. During the refrigerant recovery, confirm that the
crankcase heater of the compressor body is energized to accelerate this process.
When oil is drained from a system, it MUST be carried out safely.
1.4 Cautions
CAUTION
Wear adequate personal protective equipment (protective gloves, safety glasses,…)
when installing, maintaining or servicing the system.
CAUTION
To avoid injury, do NOT touch the air inlet or aluminium fins of the unit.
CAUTION
▪Do NOT place any objects or equipment on top of the unit.
▪Do NOT sit, climb or stand on the unit.
1.5 Notices
NOTICE
▪Make sure water quality complies with EU directive 2020/2184.
▪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.
NOTICE
Make sure refrigerant piping installation complies with applicable legislation. In
Europe, EN378 is the applicable standard.

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NOTICE
Make sure the field piping and connections are NOT subjected to stress.

2 | General operation
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2 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.
There are four different piping combinations to indoor units:
▪Pair
▪Twin
▪Triple
▪double twin.
They all have the same operation principle. Unlike multi‑system, they have only
one main expansion valve controlling the refrigerant flow to all indoor unit(s).
a
b
c
d
e
f
f
b
aCompressor
bIndoor heat exchanger (up to 4 indoor units)
cExpansion valve
dOutdoor heat exchanger
e4‑way valve
fStop valve
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 fan(s)
which blow over heat exchanger(s). 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.
Outdoor units
Sky-Air systems have combination limits for different types of outdoor units (refer
to Daikin Business Portal) and also limits for piping length and connection ratio for
each indoor unit combination pattern (refer to the Engineering Databook of
outdoor units).

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There are different types of outdoor units, including Alpha, Advanced and Active
series. Please be aware that some of the higher end outdoor series have more
functions than others (e.g. infrastructure cooling setting,…).

3 | Troubleshooting
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3 Troubleshooting
3.1 To retrieve error codes and check error history
3.1.1 Via service monitoring tool
With the service monitoring tool, it is possible to monitor not only error codes but
also some common retries and stepping down controls:
▪Unit error
▪Error code
▪High pressure retry
▪Low pressure retry
▪Discharge pipe retry
▪Inverter retry
▪High pressure stepping down control
▪Low pressure stepping down control
▪Over current stepping down control
▪Fin temperature stepping down control
▪Compressor discharging stepping down control
3.1.2 Via the indoor unit remote controller BRC1H
INFORMATION
Images are in English and for reference ONLY. For more details on the Madoka
Assistant please refer to the BRC1H training course material which is available on the
Daikin Business Portal.
To retrieve the error code
To indicate a system error, the controller displays on the messages zone of the
home screen.
b
a
c
aMessages zone
bMiddle button
cError screen
1Press the middle button to enter the main menu from the home screen.
Result: An error screen is displayed.
2Press the middle button to return to the home screen.
Active error codes are also accessible through the Madoka Assistant for BRC1H.

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The active error is shown on the home screen.
e gd f
dActive error
eHome screen
fError(s) details
gNotifications screen
3Tap the active error.
Result: The detail(s) of the error(s) are shown on the Notifications screen.
To check the error history
To check the error history with the Madoka Assistant for BRC1H:
# Action Image for reference Result
1 Tap the settings icon. The Unit settings
screen is displayed.
2 Tap Errors and
warnings.
The Errors and
warnings screen is
displayed.

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# Action Image for reference Result
3 Tap Error history.
The Error history screen
is displayed.
3.1.3 Via the wired remote control BRC1E
INFORMATION
Images are in English and for reference ONLY. For more details on the BRC1E please
refer to the user manual.
To retrieve the error code
In case of an error or warning, the operation lamp on the ON/OFF button blinks
and an error message or warning is displayed at the bottom of the screen.
a
b
c
aOperation lamp on the ON/OFF button
bError message
cWarning
# Action Result
1 Press. The error code appears on the
screen. The content of the error/
warning is displayed.

3 | Troubleshooting
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To check the error history
# Action Result
1 Go to the basic screen.
Cool
Set to
28°C
2 Press at least 4seconds while the
backlight of the screen is lit.
The Service Settings screen is
displayed.
3 Select Error History
4 Press. The Error History screen is
displayed.
5 Select RC Error History or Indoor
Unit Error History.
6 Press. ▪The RC Error History screen
shows error history for all units
in case of group control
▪The Indoor Unit Error History
screen shows error history of the
selected indoor unit

3 | Troubleshooting
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3.1.4 Via the wireless controller BRC7
To retrieve the error code
e
c
d
b
a
g
f
aINSPECTION/TEST button
bUnit No.
cUP button
dDOWN button
eMODE button
fLeft digit
gRight digit
1Press and hold INSPECTION/TEST button for 5seconds.
Result: The "unit indication" is displayed on screen and Unit No. is displayed
as "0", blinking.
2Set the Unit No. via UP/DOWN buttons until a buzzer sound* is generated
from the indoor unit.
Result: *Possible buzzer sounds:
-3 short beeps; conduct all items of the following procedure.
-1 short beep; conduct steps 3 and 4. Continue the operation in step 4 until the
buzzer sounds continuously.
-Continuous buzzer; indicates the error code is confirmed.
3Press the MODE button.
Result: The left digit of the error code on display will blink.
4Press UP/DOWN buttons to change the left digit of the error code.
Result: The left digit changes as indicated below.
UP button
DOWN button
5Continue to change until the matching buzzer sound** is generated.
Result: **Possible buzzer sounds:
-Continuous buzzer; both digits match with the error code.
-2 short beeps; left digit matches with the error code.
-1 short beep; right digit matches with the error code.
6Press the MODE button.
Result: The right digit of the error code on display will blink.