We have the American style Whirlpool fridge/freezer, which has two PCBs. One in front and one in back. The front ones part No. Is 48124553888051 and the rear PCB part No. Is 481221778213. Could you advise which one controls the defrost function.
I have replaced the freezer thermostat and also the heating element but the unit does not defrost itself, so I have to manually defrost it every 2 weeks. If I can identify which unit controls the defrost function then I can either replace the PCB or better still replace the defective electrical component?
ANSWER Hello Gerry,
The rear control board would control defrost.
Answered by AppliancePartsPros.com | Wednesday, November 28, 2012