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myron j.  
#1 Posted : Thursday, October 1, 2009 11:30:35 AM(UTC)
myron j.

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Joined: 10/1/2009(UTC)
Posts: 1

coil in the freezer froze up not allowing the air to cool the top part of the fridge. What part should I check first to solve this problem?
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denman  
#2 Posted : Friday, October 2, 2009 3:39:09 AM(UTC)
denman

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Here are your parts
Unit parts replacement parts for WHIRLPOOL GB2SHDXTQ00 | AppliancePartsPros.com

Here is the tech sheet
https://www.servicematters.com/d...0Sheet%20-%208208183.pdf

Try forcing the unit into a defrost cycle.

If it does defrost then the control board is probably shot.

If it does not defrost, it could be the defrost heater or the defrost thermostat.
Check them with a meter.
The heater should be approximately 30 ohms
The defrost thermostat should be closed (0 ohms) when frozen. Note it opens just above freezing.
You could also check that they are getting 120 volts in defrost mode.

Note if both the above check out OK then it is probably the board.

If you do not own a meter, I would suggest you purchase a one. You can get a decent digital multimeter for under $20.00. You do not need fancy though it is nice if the leads are a couple feet long.
If it saves ordering one unnecessary part it has paid for itself and you end up owning a useful tool.
Most places will not let you return electrical parts so if you order it, you own it.
A couple things to watch when measuring ohms and continuity
1. Always remove power from the machine otherwise you could blow your meter.
2. Always disconnect at least one side of any device you are checking. This eliminates the possibility of measuring an alternate/parallel circuit path.
3. When checking for closed contacts and continuity use the lowest scale (Usually 200 ohms). Then try higher scales. This scale is 0 to 200 ohms so if the device you are measuring is 300 ohms this scale would show an open circuit which it is not, you are just measuring outside the scale's dynamic range.

There is a good STICKY at the start of this forum about it's use.
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