SiBE121135_A Troubleshooting for Outdoor Unit
Service Diagnosis 224
7.17 Electrical Box Temperature Rise
Error Code L3
Outdoor Unit LED
Display
A j 1 i 2 i 3 h 4 i 5 h
∗ LED5 is equipped only on the 5-room model.
Method of Error
Detection
An electrical box temperature rise is detected by checking the radiation fin thermistor with the
compressor off.
Error Decision
Conditions
With the compressor off, the radiation fin temperature is above A °C.
The error is cleared when the 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)
100 70 85
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