AVANTI WCR683DZD WINE CHILLER - E4 ERROR CODE

https://manualsdump.com/en/manuals/avanti-wc1500dss/66172/12
The above has a troubleshooting matrix.

Power supply: Check if the wine fridge is receiving power from the mains supply. If it's not, there might be a major issue with the mains power or the PSU circuit board in the product that'll likely need replacing if it's faulty.
Condenser fan: The condenser fan is designed to cool the condenser and condenser coil within the Avanti wine cooler. If it doesn't function, the condenser and coil can overheat - causing the internal area of the wine fridge to heat up too. Take a look at the rear of the unit and make sure the condenser fan is spinning freely and not blocked (by dust / dirt) or making excessive noise due debris or a blockage.
Thermostat: If the Avanti wine fridge thermostat is working correctly, it's responsible for making the condenser, evaporator, fan, and compressor work - so it's super important! The thermostat also allows you to control and adjust the temperature of the wine cooler so if the reading on thermostat is inaccurate (or flat out wrong) the wine cooler temperature will likely be inaccurate too.

Why Is My Avanti Wine Fridge Not Cooling (And How To Fix It) - Expert Wine Storage

It should be a compressor fault, let me check

If your Avanti WCR683DZD-2 wine cooler's LED panel is blinking when plugged in and neither the fan nor the compressor comes on, there could be a few potential issues. Here are some steps you can take to begin troubleshooting and attempting to repair the unit:

1. Check power supply: Ensure that the wine cooler is receiving power by verifying that the outlet is functioning correctly. Try plugging in another device to confirm if the outlet is working properly.
2. Inspect the power cord: Examine the power cord for any signs of damage or wear. Make sure it is securely plugged into the wine cooler and the power outlet.
3. Check the control board: The blinking LED panel suggests a possible issue with the control board. Inspect the control board for any visible signs of damage, such as burnt components or loose connections. If you are knowledgeable about electronics, you can attempt to repair or replace the control board. Otherwise, it may be best to consult a professional technician or contact Avanti for further assistance.
4. Test the temperature control thermostat: The thermostat controls the operation of the fan and compressor. Using a multimeter, you can check the continuity of the thermostat to determine if it is functioning correctly. If it is faulty, it may need to be replaced.
5. Examine the compressor: Inspect the compressor for any visible issues, such as loose connections or damaged wires. Ensure that it is receiving power and that the compressor motor is not overheating. If the compressor is not running, it may require professional servicing or replacement.

The E4 error code is a result of a malfunctioning defrost sensor. If the error code is on the right then it is the defrost sensor in the upper chamber.

Attached is a link to Avanti service and parts. Provide them with the model number of your wine cellar and they will be able to provide you with a price and information on the part needed for repair.

http://www.avantiproducts.com/index.php?page=contact

If you have the owner's manual or are able to speak with a service technician through Avanti, then this can be a diy repair.

Display flashes Error message "E2" - Defrost sensor (Coil Sensor) failure.

Contact the Avanti Service Department - 1-800-220-5570

Hope helps.

Sorry we do not have any way to recommend where to get it repaired.

This is easy. It's the power supply problem. I bet you there is no juice coming out of the same electrical plug. So fix the plug or reset the circuit breaker.

check if you get power by the motor if no power change the thermostat

Fixya repair directory link
http://www.fixya.com/repair
this is the direct link for repair service enginers just select the proper unit of yours and your area  location.