FIXED GSH25JSTASS GE Fridge Defrost Issue

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PriorityJosh

Premium Member
Joined
May 10, 2018
Messages
5
Location
Nevada
Model Number
GSH25JSTASS
Brand
GE
Age
More than 10 years
We are having an issue with this fridge in which we replaced the main board about 7 months ago and seems to be working fine. We went back out two days ago with another defrost issue. We tested all thermistors which all had correct resistance readings, we checked the bi metal which also tested fine as well. The heater tested with the correct resistance. However, when we bypass the main board and the heater did not come on. Are we possibly missing something on this one?
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
102,661
Location
McMullen Valley, Arizona
Hi,

On this model you can't bypass the board to force defrost.

You have 3 parts that control the auto defrost cycle, the motherboard, the evaporator thermistor, and the defrost heater.

So what we do is a process of elimination to determine the bad part. So you will want to unplug your refrigerator and test the defrost heater first, but don't defrost it yet before testing it because if the heater checks good then you will need to test the evaporator thermistor that's mounted on the top of your evaporator coil, and that needs to be covered in frost to test that.

Unplug the refrigerator first, then test the defrost heater first, take the wires off before testing. Watch the video below to test it, if that tests fine, then watch the video Shawn made to test your defrost thermistor. If both test fine, then your motherboard is the bad part.

Here's the evaporator thermistor for your model:
Thermistor WR55X10025


Watch this video, Shawn explains how to test/replace the evaporator thermistor:


Here's the defrost heater for your model:
Defrost Heater Assembly WR51X10055


Here's the motherboard for your model:
Main Control Board WR55X10942P



Watch this video to test your defrost heater:


Let us know what you find.

Jake
 

PriorityJosh

Premium Member
Joined
May 10, 2018
Messages
5
Location
Nevada
We ran through all the tests again and looks like we found the evaporator thermistor was bad. Everything is working now!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
102,661
Location
McMullen Valley, Arizona
Excellent Josh, glad to hear that.:)

Thanks for the update!

Jake
 
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