Walk In Freezer Evaporator Fan Not Working

The evaporator coils are usually located behind the freezer compartment and the evaporator fan should be right in front of them although it may be offset to one side or the other.

Walk in freezer evaporator fan not working.

Also check all gauges to be sure temperatures subcooling superheat and pressures are all normal. Next check for a clean coil and clear drain line. I found several issues with the unit the unit had a bad contactor compressor txv ect. If the door switch is activated but the evaporator fan motor won t run replace the evaporator fan motor.

The fan should come on whenever the compressor cycles on. Next check for continuity through the light blue wire in the same way. If the evaporator fan motor stops working your freezer will begin to defrost. The freezer or cooler shell need to be regularly inspected for loose panels or installation and leaks.

Clean walk in cooler and walk in freezer condenser coils. Leaks and other issues in the shell can cause too much moisture to get in which can cause a bigger issue. Check fan motor and its electrical circuit. See corrective steps for low suction pressure.

This was a walk in cooler that had been down for a few days. In many cases the problem is do to the fact that the evaporator fan cannot operate freely due to an ice. If the freezer is cold there likely isn t an issue with the evaporator fan motor. Drop down the back freezer panel and unplug the evaporator fan.

The meter should read near 0 ohms. Cooler is freezing if the walk in cooler is freezing up the first step is to melt ice off the evaporator and then check that the evaporation fan is running and rotating correctly. System overcharged with refrigerant. To check the evaporator fan motor open the freezer door and then manually activate the freezer door switch.

To check for continuity put the meter leads on either end of the red wire with the white stripe one on the evaporator fan plug and the other on the control board plug. On most refrigerators the fan motor will not run when the door is open. The door will be a main part of the cooler. Open the freezer door and feel for cool air with your hand.

Insufficient refrigerant in system. Repair and add charge. If the freezer isn t working you should be able to tell quickly.