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Whirlpool Refrigerator WRF535SMBM00 back of freeze frost build up fridge gets warm

andy2430

Premium Member
Joined
Jul 25, 2021
Messages
2
Location
sacramento california
Model Number
WRF535SMBM00
Brand
Whirlpool
Age
1-5 years
hello, I'm dealing with an issue going on 2 months now where the freezer builds up with frost and the vents start freezing over. The fridge then starts getting warmer. I turned off the fridge for 24 hours and plug it back in. works great for a week or so before it happens again.

it sounds like it's most likely the control board? I read that it could be the defrost timer as well but I'm having trouble locating that and don't see any parts available for this model.

also, what is the best place to buy a new control board?


is it too risky to buy on amazon?

model WRF535SMBM00 (freezer on board) fridge on top.

thanks for any insight!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
128,926
Location
Redmond, Oregon
Is the freezer fan running?

If so, then 3 parts control the defrost cycle--->The defrost thermostat, defrost heater, and JAZZ control board.

Here's the defrost thermostat assembly below for your model, it comes with the wire harness. The black round part is your defrost thermostat. You will need to ohm test it(WHILE ITS FROSTY). If its NOT already frosty, then ohm test it in a glass of ice water, waiting at least 5 minutes before ohm testing it.

W11260592 Harns-Wire


Watch this video to ohm test it:

Unplug the wire harness first before ohm testing it.

Let us know what you find.

We highly advise people NOT to buy parts on amazon or ebay.

We always refer people to: AppliancePartsPros and RepairClinic

Your model doesn't use a defrost timer, the JAZZ control board cycles it into the defrost cycle.

Here's the JAZZ control board for your model:
WPW10503278 Electronic Control Board


There's a video in that link that shows you how to access/replace it.

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
128,926
Location
Redmond, Oregon
Ok Andy, sounds good, let us know what you find.

Jake
 
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