SiBE121021_C Troubleshooting for Outdoor Unit
Service Diagnosis 351
7.13 Electrical Box Temperature Rise
Remote
Controller
Display
L3
Outdoor Unit LED
Display
A
j
1
i
2
i
3
h
4
i
5
h
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
A
°C.
The error is cleared when the temperature drops below
B
°C.
To cool the electrical components, the outdoor fan starts when the radiation fin temperature
rises above
C
°C and stops when it drops below
B
°C.
Supposed
Causes
Defective outdoor unit fan
Short circuit
Defective fin thermistor
Disconnection of connector
Defective outdoor unit PCB
A (°C) B (°C)
C
(°C)
100 70 85
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