SiENBE12-713 Troubleshooting
Service Diagnosis 265
5.22 Electrical Box Temperature Rise
Remote Control
Display
L3
Outdoor Unit LED
Display
A 5 1 4 2 4 3 1 4 4
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 100°C.
" The error is cleared when the temperature drops below 70°C.
Supposed
Causes
" Fin temperature rise due to defective outdoor unit fan
" Fin temperature rise due to short-circuit
" Fin thermistor defective
" Connector in poor contact
" Outdoor unit PCB defective
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