Troubleshooting SiBE05-722EE
94 Service Diagnosis
4.22 Electrical Box Temperature Rise
Error Code
L3
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 radiation fin 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 the radiation fin temperature 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)
RK(X)S25/35E2V1B, RK(X)S25/35G2V1B 80 70 80
RK(X)S25/35G2V1B9, RXS25/35J2V1B
RXS25K3V1B, RXS35K2V1B, RXS25/35L2V1B
RXS25/35L3V1B
98 75 83
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