Electrical Box Temperature Rise - Daikin FVXS25FV1B Service Manual

SiBE06-708
4.21

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 80°C (95°C ). (Reset is made
when the temperature drops below 70°C (80°C ).)
Decision
Conditions
Supposed
Causes
Service Diagnosis
: value for 50 class
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
Troubleshooting
121