Walk In Freezer Evaporator Fans Not Running

Insufficient refrigerant in system.

Walk in freezer evaporator fans not running. If it turns on you should be able to clearly hear the electric motor activate and then a low hum from the fan spinning. Check fan motor and its electrical circuit. Unplug the refrigerator and remove the screw that holds the control box. If your freezer has electronic controls instead of a dial a failed relay on the electronic control board or a bad control panel can prevent the compressor from getting power.

The condenser fan motor draws air through the condenser and over the condenser coils. Repair and add charge. A loud blowing sound from the motor doesn t mean it s bad either. If the condenser fan is not running check the fan blades for obstructions.

Let s check the wiring first. The freezer light should turn off and the evaporator fan should kick on after a few seconds. See corrective steps for low suction pressure. Not running if the freezer has electrical power the inside light turns on but the compressor won t run a failed cold control thermostat could be the problem.

If the fan blades do not spin freely the fan motor bearings are worn out and the fan motor should be replaced. If the evaporator fan doesn t run in the diagnostic test mode then you could have a defective control board but the problem could also be a bad evaporator fan or a break in the wiring. System overcharged with refrigerant. Clean walk in cooler and walk in freezer condenser coils.

If your refrigerator isn t getting cool the fan is just one of many possible reasons. Next ensure that the blades spin free ly. In many cases the problem is do to the fact that the evaporator fan cannot operate. Physically obstructed if the fan is not running unplug the refrigerator and remove the evaporator fan cover.