What's wrong with the cake display cabinet not being cooled?

After cake cabinet turned on the power supply, the compressor didn't respond. At this time, you should first check whether the lighting in the refrigerator is still on. If you open the refrigerator door and find that the light bulb is not lit, you need to disconnect the power supply. Use a multimeter to measure whether the power supply voltage is 220V V. If the measurement shows that there is no voltage or the voltage is very low, you should ask a professional electrician to rewire it. If the measurement shows that the power supply voltage is normal, cake cabinet should be maintained.

1. If there is voltage at the inlet end of the thermostat, the next step is to measure whether the thermostat is conductive with a multimeter (what needs to be measured here is whether the inlet end of the thermostat is conductive with the compressor plug-in end). If there is no electricity at room temperature, it means that the thermostat is faulty and needs to be replaced (it is best to replace the thermostat of the same model from the original factory when replacing, because the start and stop points of thermostats of different models and manufacturers are different, which may cause non-stop or abnormal switch ratio).

After troubleshooting the thermostat and power supply, you can use a multimeter to measure whether there is a voltage of 220V at the compressor terminal. If there is no voltage, it means that the line from the thermostat to the compressor is open, and the cabinet needs to be opened for maintenance or wiring.

2. If the voltage at the compressor terminal is measured and the voltage is normal, the compressor still has no response. You can try replacing the starting relay and protector. If the compressor is completely unresponsive when the machine is powered on after replacing the starting relay and protector, there are two possibilities: 1. The compressor is damaged. 2. Line problem

What needs special explanation here is that after measuring the working voltage of the compressor terminal with a multimeter, we should have a clear understanding of the 220V here. At this time, there are two possibilities for the voltage of 220V: one is 220V between live wire and neutral wire, and the other is 220V between live wire and ground wire.

3. If the previous compressor does not start, the compressor is damaged. If it is the latter, it needs to be treated with caution. After measuring the terminal voltage of compressor with multimeter, in order to accurately judge the nature of 220V at this time (is it between live wire and zero wire or between live wire and ground wire? ), you can connect the power cord from the compressor terminal and directly abandon the circuit in the cake cabinet cabinet. If the compressor can be started after using the external power line, it is the internal circuit of the cabinet.

I found the above information in Santo freezer. See if I can help you.