Troubleshooting
46
Electrical Control System
3. Troubleshooting
LEDs’ for the indication of outdoor trouble
Type
Contents
LED1
LED2
LED3
Trouble
Phase sequence(Only for VEM60C3SS1)
Flash
Off
Off
Trouble
Lack of phase(A,B) (Only for
VEM60C3SS1)
Flash
Off
Off
Trouble
Lack of phase(Only for VEM60C3SS1)
Off
Off
Off
Trouble
Protection of Low pressure(for 48k-60k
models)
Flash
Flash
Off
Trouble
Overload of current
Off
Off
Flash
Trouble
Communication malfunction
Flash
Off
Flash
Trouble
Open-circuit and short-circuit trouble of T5
or protection of high pressure(for 48k-60k
models)
Off
Flash
Off
Note:
1. If the LED1-LED3 are flashing slowly, means the system is stand-by.
2. T3: Outdoor condenser temperature sensor
3. T4: Outdoor ambient temperature sensor
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