Electrical Box Temperature Rise - Daikin SiEN04-306D Service Manual

Troubleshooting

4.17 Electrical Box Temperature Rise

L3
remote control
Display
Method of
An electrical box temperature rise is detected by checking the radiation fin thermistor with the
Malfunction compressor off.
Detection
Malfunction With the compressor off, the radiation fin temperature is above 80°C (above 75°C in the case of
Decision 7.1kW class). (Reset is made when the temperature drops below 70°C.)
Conditions
Supposed
Causes
130
Fin temperature rise due to defective outdoor unit fan
Fin temperature rise due to short-circuit
Fin thermistor defective
Connector in poor contact
Outdoor unit PCB defective
SiEN04-306D
Service Diagnosis