Troubleshooting SiBE041101
113 Service Diagnosis
4.22 Radiation Fin Temperature Rise
Remote
Controller
Display
L4
Method of
Malfunction
Detection
A radiation fin temperature rise is detected by checking the radiation fin thermistor with the
compressor on.
Malfunction
Decision
Conditions
If the radiation fin temperature with the compressor on is above A °C.
The error is cleared when the radiation fin temperature drops below B °C.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
Defective outdoor fan motor
Short circuit
Defective radiation fin thermistor
Disconnection of connector
Defective outdoor unit PCB
Silicon grease is not applied properly on the radiation fin after replacing the outdoor unit
PCB.
A (°C) B (°C)
20/25/35 class 98 78
42 class 92.5 85
50 class 105 99
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