Inverter Radiation Fin Temperature Rise Abnormality - Daikin REYQ-XA Service Manual

SiUS371901E

3.52 Inverter Radiation Fin Temperature Rise Abnormality

3.52.1 Inverter Radiation Fin Temperature Rise Abnormality (Inverter PCB)
L4
Error Code
Sub code: 01-03
Applicable All outdoor unit models
Models
Method of Error
Detect temperature of power module of the inverter PCB.
Detection
Error Decision Thermistor located inside the power module of the inverter PCB for compressor and fan motor.
Conditions Cooling tube plate poor heat-exchange.
Supposed
Causes
Service Diagnosis
Cooling tube plate not fixed with screws
U0 error
Defective inverter PCB
High outdoor air temperature
Incorrect power supply voltage
Defective connection of connectors
Troubleshooting by Error Code
322