When the fault indicator and the protection switch are all normal, the compressor cannot be started.

Please check:

1. Whether the temperature switch is adjusted too high or damaged;

2. Whether the switch is damaged;

3. Whether the antifreeze switch is damaged;

4. Whether the pressure switch is tripped or damaged;

5. Whether the compressor overload protector is damaged or tripped;

6. Whether the electromagnetic relay coil is damaged and the overload protector is damaged;

7. Whether the liquid level in the water tank is too low;

8. Please check if the chilled water flow switch is damaged;

Note: If the above control switch or line is faulty, the compressor will not operate.