ESIE15-13B Troubleshooting by Remote Controller
Service Diagnosis 173
4.34 Transmission Error between Indoor and Outdoor Unit
Remote
Controller
Display
U4
Applicable
Models
RZQG
Method of Error
Detection
The error is generated when the micro-processor detects that the transmission between the
indoor and the outdoor unit is not normal over a certain amount of time.
Error Decision
Conditions
When the transmission is not carried out normally over a certain amount of time.
Supposed
Causes
Wiring indoor-outdoor transmission wire is incorrect
Defective indoor unit PCB
Defective outdoor unit PCB
Burning out fuse
Defective outdoor fan motor
External factor (Noise, etc.)
Defective power supply
Disconnection of optional equipments
Connector is defective (X806A)
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