Inverter Radiation Fin Temperature Rise Abnormality - Daikin VRV EMERION REYQ-AATJA Service Manual

SiUS372201EB

3.56 Inverter Radiation Fin Temperature Rise Abnormality

3.56.1 Inverter Radiation Fin Temperature Rise Abnormality (Inverter PCB)
Applicable
All outdoor unit models
Models
L4
Error Code
Sub code: 01, 02, 09, 10
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
 Cooling tube plate not fixed with screws
Causes
 U0 error
 Defective inverter PCB
 High outdoor air temperature
 Incorrect power supply voltage
 Defective connection of connectors
Part 6 Service Diagnosis
Troubleshooting by Error Code
398