Error Based Troubleshooting - Daikin 2MXM50M Service Manual

ESIE16-02B | Part 2. Troubleshooting

2.2. Error based troubleshooting

Overview of error codes:
Indoor unit............................................................................................................................................................................................ 21
"A1-00" – PCB abnormality...................................................................................................................................................... 21
"A1-01" – PCB abnormality...................................................................................................................................................... 21
"A5-00" – Freeze-up protection / Heating peak cut control...................................................................................................... 22
"A6-00" – Fan motor abnormality............................................................................................................................................. 22
"C4-00" – Liquid pipe thermistor for heat exchanger abnormality ........................................................................................... 23
"C7-00" – Front panel open/close fault .................................................................................................................................... 23
"C9-00" – Suction air thermistor abnormality........................................................................................................................... 23
"UH-00" – Anti-icing function in other room(s) ......................................................................................................................... 24
Outdoor unit......................................................................................................................................................................................... 25
"E1-00" – Outdoor unit PCB abnormality................................................................................................................................. 25
"E3-00" – Discharge pressure abnormality.............................................................................................................................. 25
"E5-00" – Compressor motor lock or overheated .................................................................................................................... 26
"E6-00" – Compressor motor lock ........................................................................................................................................... 26
"E7-00" – Fan motor abnormality............................................................................................................................................. 27
"E8-00" – Compressor overcurrent detection .......................................................................................................................... 28
"EA-00" – 4-way valve abnormality.......................................................................................................................................... 28
"F3-00" – Discharge pipe temperature abnormality................................................................................................................. 29
"F6-00" – High pressure abnormality or refrigerant overcharge .............................................................................................. 29
"H0-00" – Compressor sensor system abnormality ................................................................................................................. 30
"H6-00" – Position detection sensor abnormality..................................................................................................................... 30
"H8-00" – Compressor input (CT) system abnormality............................................................................................................ 31
"H9-00" – Outdoor air temperature thermistor abnormality ..................................................................................................... 31
"J3-00" – Discharge pipe thermistor abnormality..................................................................................................................... 32
"J5-00" – Suction pipe thermistor abnormality......................................................................................................................... 32
"J6-00" – Outdoor heat exchanger thermistor abnormality...................................................................................................... 32
"J8-00" – Liquid pipe thermistor abnormality ........................................................................................................................... 33
"J9-00" – Gas pipe thermistor abnormality .............................................................................................................................. 33
"L1-00" – Outdoor main PCB abnormality ............................................................................................................................... 34
"L3-00" – Switch box temperature abnormality........................................................................................................................ 34
"L4-00" – Inverter radiating fin temperature abnormality ......................................................................................................... 35
"L5-00" – Inverter instantaneous overcurrent (AC output)....................................................................................................... 36
"P4-00" – Radiating fin temperature sensor abnormality......................................................................................................... 36
System................................................................................................................................................................................................. 38
"U0-00" – Refrigerant shortage................................................................................................................................................ 38
"U2-00" – Power supply abnormality or instantaneous power failure ...................................................................................... 38
"U4-00" – Transmission abnormality between indoor unit and outdoor unit ............................................................................ 39
"U7-00" – Transmission outdoor unit-outdoor unit abnormality ............................................................................................... 40
"UA-00" – Improper combination of indoor unit and outdoor unit ............................................................................................ 40
"UF-00" – Wiring and piping mismatch .................................................................................................................................... 41
Others ................................................................................................................................................................................................. 41
Page 20
RA R32 Split & multi split M-Series
2.2. Error based troubleshooting
4/04/17 | Version 1.1