Troubleshooting by Indication on the Remote Controller
SiUS30-1301
208
Service Diagnosis
3.33 Transmission Error between Inverter and Condensing Unit
Main PCB
Error Code
LC
Applicable
Models
RWEYQ72P, 84P
Method of Error
Detection
Check the communication state between inverter PCB and condensing unit 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 condensing unit main PCB
Defective condensing unit main PCB (transmission section)
Defective inverter PCB
Defective noise filter
External factor (Noise, etc.)
Defective inverter compressor
Defective fan motor