Remote Controller Display Malfunction Code And Contents - Daikin Sky Air B-Series R-410A Service Manual

Si21-205
2.4 Remote Controller Display Malfunction Code and
Contents
Code
A1 Indoor unit's PC board faulty
A3 Drain water level abnormal
A5 Freeze-up protector "or stopped by high pressure control"
A6 Indoor fan motor overloaded, overcurrent or locked (Note 1)
A7 Swing flap motor malfunction/Lock
AF Failure of Drain System
Air cleaner faulty
AH
Only the air cleaner does not function.
Type set improper
AJ
Capacity data is wrongly preset. Or there is nothing programmed in the data hold IC.
C4 Sensor (R2T) for heat exchanger temperature is fault
C5 Sensor (R3T) for heat exchanger temperature is fault
C9 Sensor for suction air temperature is fault
Sensor for remote controller is fault
CJ
The remote controller thermistor does not function, but the system thermo run is possible.
Transmission error (indoor unit-outdoor unit) (Note 1)
Incorrect wiring between indoor and outdoor units or malfunction of the PC board mounted on the
indoor and the outdoor units.
U4
If UF is shown, the wiring between the indoor and outdoor units is not properly wired. Therefore,
immediately disconnect the power supply and correct the wiring. (The compressor and the fan
mounted on the outdoor unit may start operation independent of the remote controller operation.)
Transmission error (indoor unit-outdoor unit)
U5
Transmission is improper between the indoor unit and the remote controller.
Malfunction in transmission between main and sub remote controls.
U8
(Malfunction in sub remote control.)
Miss setting for multi system
UA
Setting is wrong for selector switch of multi-system. (see switch SS2 on the main unit's PC board)
Incorrect combination with indoor unit and outdoor unit
UC Central control address overlapping
Notes: 1. There is a possibility of open phase power supply, check power supply also.
Troubleshooting
Self-Diagnosis by Remote Controller
Malfunction / Remarks
137