Daikin R42NUY2S - LC Transmission Error (between Control PCB and Inverter PCB)

Troubleshooting by Remote Controller Si20-701_B
323
3.73
LC
Transmission Error
(between Control PCB and
Inverter PCB)
Remote Controller Display
LC
Applicable Models
RZQ-K/H, RZQ(S)-B/C, RZR-KU/HU
Method of Error Detection
Check whether transmission between control PCB and
inverter PCB is carried out normally.
Error Decision Conditions
When the transmission is not carried out in a specified
period of time or longer
Supposed Causes
 Incorrect transmission wiring between control PCB
and inverter PCB/insufficient contact in wiring
 Defective control PCB and inverter PCB
 External factor (Noise, etc.)
 Defective outdoor unit fan motor
 Defective fan motor connector contact