Transmission Error Between Inverter And Condensing Unit; Pcb - Daikin VRV-WIII RWEYQ72PTJU Service Manual

Troubleshooting by Indication on the Remote Controller

3.33 Transmission Error between Inverter and Condensing Unit

Main PCB
LC
Error Code
Applicable RWEYQ72P, 84P
Models
Method of Error
Check the communication state between inverter PCB and condensing unit main PCB by micro-
computer.
Detection
Error Decision When the transmission is not carried out in a specified period of time or longer
Conditions
 Incorrect transmission wiring between the inverter PCB and condensing unit main PCB
Supposed
 Defective condensing unit main PCB (transmission section)
Causes
 Defective inverter PCB
 Defective noise filter
 External factor (Noise, etc.)
 Defective inverter compressor
 Defective fan motor
208
SiUS30-1301
Service Diagnosis