SiBE04-808_B
Troubleshooting
Service Diagnosis
134
4.21 Electrical Box Temperature Rise
Remote
Controller
Display
L3
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 radiation fin 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 fan motor
Short circuit
Defective radiation fin thermistor
Disconnection of connector
Defective outdoor unit PCB
A
(°C)
B
(°C)
C
(°C)
RK(X)S20-35G2V1B, ARXS20-35G2V1B
80
70
80
RK(X)S20-35G2V1B9, ARXS20-35G3V1B
98
75
83
RK(X)S42G2V1B, ARXS42G2V1B
80
70
75
RK(X)S50G2V1B, ARXS50G2V1B
95
80
85
