Table Of Contents - Daikin Sky Air FAA71BUV1B Service Manual

Table of Contents

Service manual
4
Table of Contents
1 Safety precautions
1.1 Meaning of warnings and symbols.................................................................................................................................
1.2 Dangers ...........................................................................................................................................................................
1.3 Warnings .........................................................................................................................................................................
1.4 Cautions .......................................................................................................................................................................... 12
1.5 Notices ............................................................................................................................................................................ 12
2 General operation
3 Troubleshooting
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
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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FAA71+100BUV1B
Sky Air indoor units
ESIE22-01 - 2022.02