Specifications

Troubleshooting by Remote Controller SiBE341027
156 Service Diagnosis
2.33 Transmission Error (between Indoor and Outdoor Units)
Remote
Controller
Display
U4
Applicable
Models
All indoor unit models
RQYQ-PY1B
Method of Error
Detection
The error is generated when the micro-computer detects that the transmission between the
indoor and outdoor unit is not normal.
Error Decision
Conditions
When transmission is not carried out normally for a certain amount of time
Supposed
Causes

Indoor to outdoor, outdoor to outdoor transmission wiring F1, F2 disconnection, short circuit
or wrong wiring

Outdoor unit power supply is OFF

System address does not match

Defective outdoor unit main PCB (A1P)

Defective indoor unit PCB