- Check the connections between the cooler and the battery – if a fridge runs on 220 volts, most issues are not related to the unit.
- The power supply is faulty. Please replace it.
- Check the compressor – if the compressor and condenser do not start, replace the compressor controller
- If there is a voltage protector, you can bypass it. (TAKE CARE!)
- The compressor and condenser fan do not start up. Replace the compressor controller.