Specifications

SiBE341027 Troubleshooting by Remote Controller
Service Diagnosis 143
2.25 Transmission System Error (between Inverter and Main
PCB)
Remote
Controller
Display
LC
Applicable
Models
RQYQ-PY1B
Method of Error
Detection
Check the communication state between inverter PCB and main PCB by micro-computer.
Error Decision
Conditions
When the transmission is not carried out in a specified period of time or longer.
Supposed
Causes

Incorrect transmission wiring between the inverter PCB and outdoor unit main PCB

Defective outdoor unit main PCB (transmission section)

Defective inverter PCB

Defective noise filter

External factor (noise etc.)

Defective inverter compressor

Defective fan motor