If you are experiencing a malfunction of your refrigeration dryer, the following steps may help you troubleshoot and resolve the issue:

Check the power supply: Make sure that the dryer is properly connected to a power source and that the outlet is functioning correctly. If there is a power issue, you may need to call an electrician.

Inspect the condenser: The condenser may be clogged with dust or debris, which can reduce the efficiency of the dryer. Clean the condenser with a soft brush or vacuum.

Check the refrigerant level: A low refrigerant level can cause the dryer to malfunction. If you suspect this is the issue, contact a professional to recharge the system.

Inspect the thermostat: If the thermostat is not functioning correctly, it may cause the dryer to run continuously or not at all. Test the thermostat with a multimeter and replace it if necessary.

Check the compressor: The compressor is the heart of the refrigeration system, and a malfunctioning compressor can cause the dryer to fail. If the compressor is making unusual noises or not turning on, contact a professional to inspect and repair it.

Contact a professional: If you are unable to diagnose or fix the issue, it may be best to contact a professional refrigeration technician to repair or replace the dryer.

Remember that refrigeration dryers involve complex and potentially dangerous machinery. If you are not comfortable with handling these issues yourself, it is always better to err on the side of caution and seek professional help.