Zanussi ZRB224NWO Defrost Timer : Invensys CH-3001-21

Product Description

The defrost timer in your freezer is a mechanical device that controls the defrosting cycle.

It runs continuously and roughly every six hours, cuts power to the cooling system and sends power to the defrost heater. In newer freezer models the timer advances only while the compressor or defrost cycle is running. As the timer continues, power to the heating element is cut and power is restored to the cooling system.

If the timer for your appliance has become faulty, then your freezer will be stuck either in defrost or refrigerate mode, resulting in, no cooling or frost build-up.

Please check model fit list to ensure this part is correct for your model.