Specifications

Troubleshooting SiBE04-624
182 Service Diagnosis
2.30 Abnormal Temperature in Electrical Box
Remote
Controller Display
L3
Outdoor Unit LED
Display
A5 5 -
Method of
Malfunction
Detection
Temperature rise in the electrical box is identified based on the temperature of the radiation fin
detected by the fin thermistor with the compressor off.
Malfunction
Decision
Conditions
When the temperature of the radiation fin is 122°C or more during the compressor off. (When
the temperature drops below 113°C, fault condition is cleared.)
Supposed
Causes

Fin temperature rise due to defective outdoor fan

Fin temperature rise due to short circuit

Detection error due to defective fin thermistor

Detection error due to improper connection of connector

Detection error due to defective outdoor unit PCB