SiBE12-933_A
Troubleshooting
Service Diagnosis
201
4.19 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 93°C,
If a radiation fin temperature rise takes place 255 times successively, the system is shut
down.
The error counter is reset if this or any other error does not occur during the following 60-
minute compressor running time (total time).
Supposed
Causes
Radiation fin temperature rise due to defective outdoor unit fan
Radiation fin temperature rise due to short-circuit
Radiation fin thermistor defective
Connector in poor contact
Outdoor unit PCB defective
Silicon grease is not applied properly on the heat radiation fin after replacing outdoor unit
PCB