If your refrigerator isn t getting cool the fan is just one of many possible reasons.
Walk in freezer evaporator fans not running.
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.
Next ensure that the blades spin free ly.
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.
Clean walk in cooler and walk in freezer condenser coils.
See corrective steps for low suction pressure.
System overcharged with refrigerant.
The freezer light should turn off and the evaporator fan should kick on after a few seconds.
In many cases the problem is do to the fact that the evaporator fan cannot operate.
According to repair clinic other possible reasons include dirty evaporator coils a faulty thermostat or a bad evaporator motor compressor.
If the fan motor does not turn on while you hold the switch the motor is probably bad.
Let s check the wiring first.
Repair and add charge.
If the condenser fan is not running check the fan blades for obstructions.
A loud blowing sound from the motor doesn t mean it s bad either.
Physically obstructed if the fan is not running unplug the refrigerator and remove the evaporator fan cover.
Check fan motor and its electrical circuit.
Insufficient refrigerant in system.
The condenser fan motor draws air through the condenser and over the condenser coils.
Press and hold the switch for a minute.
Unplug the refrigerator and remove the screw that holds the control box.