Ask any air conditioning technician a condenser fan breaking down can wreak havoc on the system.
Sub zero evaporator fan replacement.
It turns on when the door is closed instead of off.
The fan switch controls the evaporator fan.
If a light switch is installed in the fan switch location poor temperatures will result.
Sub zero condenser fan motor 1300 rpm sub zero fan blade 500 series grommets optional 600 series wall grommets optional 700 series wall grommets optional step one.
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Determine if the motor needs replacement.