Avanti EWC-12 circuit board replacement (correction)

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

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Hi, This is very easy designer this Board, I 'm a repair center from this boards.... what do you need from shematic this board, question for my and I give help for you from Brasil in www.indexdata.com.br.....

Unfortunately you may need a new console circuit board. I have just replaced 3 for the same treadmill model. It seems to be a slight problem with this model.

I've added a link for an Avanti ewcb,
http://www.retrevo.com/support/Avanti-EWC16B-Refrigerators-manual/id/867bh235/t/2/. There you can find a complete manual on the product which will help you to locate where the problem is coming from. hope I've helped!

here is the reference manual for that model hope it helps http://www.avantiproducts.com/manual/ewc12.pdf

either the electronic control is bad, or there is a temp-hold button somewhere on it

I have the same E4 problem. You can order the PCB from Avanti at Miami Florida or your regional Avanti service rep.

There is a circuit board in this that you'll have to replace,and good luck finding the part.Most of these coolers were built as throw aways,meaning when it stops working you, throw it away.