Electrical Box Temperature Rise - Daikin FTXS09HVJU Service Manual

SiUS04-904

4.18 Electrical Box Temperature Rise

L3
Remote
Controller
Display
An electrical box temperature rise is detected by checking the radiation fin thermistor with the
Method of
compressor off.
Malfunction
Detection
Malfunction With the compressor off, the radiation fin temperature is above 176°F (80°C). Reset is made when
the temperature drops below 158°F (70°C).
Decision
Conditions
 Fin temperature rise due to defective outdoor unit fan
Supposed
 Fin temperature rise due to short-circuit
Causes
 Fin thermistor defective
 Connector in poor contact
 Outdoor unit PCB defective
130
Troubleshooting
Service Diagnosis