Troubleshooting
Si12-714
206
Service Diagnosis
5.20
Electrical Box Temperature Rise
Remote
Controller
Display
L3
Outdoor Unit LED
Display
A
5
1
4
2
4
3
1
4
4
Method of
Malfunction
Detection
An electrical box temperature rise is detected by checking the radiation fin thermistor with the
compressor off.
Malfunction
Decision
Conditions
With the compressor off, the radiation fin temperature is above °C.
The error is cleared when the temperature drops below
°C.
Supposed
Causes
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
~80 class
80
70
80·90 class
75
65
100 class
80
75
