Electrical Box Temperature Rise - Daikin FTKS20CVMB Service Manual

SiENBE04-401A

4.17 Electrical Box Temperature Rise

L3
Remote control
Display
An electrical box temperature rise is detected by checking the radiation fin thermistor with the
Method of
compressor off.
Malfunction
Detection
With the compressor off, the radiation fin temperature is above 80°C(90°C ). Reset is made
Malfunction
when the temperature drops below 70°C(80°C ).
Decision
Conditions
Supposed
Causes
Service Diagnosis
: value for (A)RK(X)H, R(Y)N models
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
129