What causes a refrigerator to not defrost?

Refrigerator not defrosting & Refrigerator freezer coils frosting up

If you open up your fridge and notice ice and frost inside, chances are your fridge is not defrosting. When the inside of your fridge looks like winter has arrived, you’re going to want to get the issue fixed so your food does not freeze.

Causes:

• Issue with defrost control board: Your fridge has a control board that directs when it needs to run the automatic defrost cycle. When there is an issue with the control board, the defrost cycle will not run.
• Issue with defrost sensor and fuse: Your fridge comes with a defrost sensor system, and this system monitors the temperature of your evaporator. This part comes with a fuse that is used as a back up in the case of the sensor failing. If the sensor fails to shut off the defrost heater, the fuse will blow, and the heater will be forced to shut off. If this happens, your heater will no longer work and your fridge will not defrost.
• Defrost timer not working: Your fridge comes with a defrost timer which turns on the defrost heater throughout the day. When the timer is not working, it may not send any power to the defrost heater, meaning the fridge will not defrost.
• Defrost heater not working: The fridge has a defrost heater, which heats up to remove any frost. When the defrost heater is broken, your fridge is unable to defrost.

When you need help with your fridge, our trained and experienced fridge repair technicians can solve your issues for you as soon as possible.