Electrical Box Temperature Rise - Daikin FTXS09DVJU Service Manual

Troubleshooting
4.18

Electrical Box Temperature Rise

L3
Remote
Controller
Display
Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the
compressor off.
Malfunction
Detection
Malfunction With the compressor off, the radiation fin temperature is above 176°F. Reset is made when the
temperature drops below 158°F.
Decision
Conditions
Supposed
Causes
156
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
SiUS04-702
Service Diagnosis