1. The operation indicator is damaged or broken. 2. The thermostat fails, resulting in an open circuit.

Specific reasons:

If it happens after refrigerant replenishment, it can make

1, the light goes out and the low voltage is insufficient.

2. Due to the lack of high pressure and fluorine, I can start the unit after repairing the leaking part, because the dust sticks to it and does not dissipate heat. I'm Mitsubishi, too. This failure usually occurs at the first startup after installation.

3. The yellow light keeps flashing. We can analyze and judge the fault from the following points because the temperature is too high.

4. When the exhaust pressure rises, check whether the compressor stops. Please ask the maintenance personnel for treatment. It may be that there is too much refrigerant. Usually.