Model #GTH18EBTZRWW GE Top-Mount Refrigerator

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Question and Answers

Q:

Defrost cycle does not work. Checked heater and thermostats, both okay. What next? GTH18EBTZRWW Ge Refrigerator t series

A:

Thank you for choosing SearsPartsDirect.com and being a valued member.  I can certainly understand how frustrating it can be when your defrost cycle does not work.

Defrost Control @ 115V~60Hz . . . . . . . . Adaptive Defrost
If the control does not measure this many volts then it will need to be replaced.


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If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website: Sears Home Services .

Thank you for your question. Have a great day.

SAFETY NOTICE: Be sure to disconnect power to the appliance before performing any repairs. If you are not comfortable with doing any voltage checks that might be recommended, please contact your local service provider for repairs. Be aware that there could be sharp edges inside the appliance that could cause cuts or other injuries to yourself or others.

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Natasha12 -
Sears Technician
June 15, 2015
A:

Natasha, Thanks! The question, of course, is where to measure the voltage -- across which terminals on what component? And under what conditions, such as a forced defrost cycle, and how does one do that? I found a yellow wire that feeds the thermostats and then the heater, and measured continuity from the far end of the heater back to the yellow wire on the controller when the coil was cold. It's good, leading me to believe the controller is not putting out the needed 110 V. So I have ordered the part. Ron

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Ronald -
June 15, 2015
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Q:

Dads frig has to defrost thermostats wired in series with different numbers which goes first?

A:

Thank you for your question. I see that you attempted to submit a question. For some reason the details did not post. If you could please reply below with the model number of the refrigerator, Your expert will be happy to help you. It may take two business days for your expert to reply. I do hope that everything works out.

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Marc -
June 24, 2013
A:

Model Number GTH18EBTZRWW. The 2 part numbers for the thermostats are WR50X10073 and WR50X10071. After watching some videos it seems that 71 is first in chain. Most that I have watched only have one thermo. Just need to know which is first. Thanks

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Craig -
June 24, 2013
A:

Thank you for your question.  Most of the time it would not matter how the defrost thermostat wires are connected.  If you can reply below with a model number I may be able to give you a more specific answer with more detail.  Please reply below with any additional details for further assistance. 

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Fred M -
Sears Technician
June 25, 2013
A:

Model #GTH18EBTZRWW General Electric. It has two wired in series and they have different part #s. WR50X10073 and WR50X10071. Just needing to know which one goes first in series. It appears to be the 71 number followed by the 73 then on to the heater.

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Craig -
June 26, 2013
A:

The diagram below may be helpful to you. It doesn't matter which goes where. Both thermostats are rated the same.

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Fred M -
Sears Technician
June 29, 2013
A:

Thanks had found that diagram but was not sure of location. Not sure why two different numbers if same but kinda thought that it wouldn't matter. Thanks again!

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Craig -
July 08, 2013
A:

The order absolutely does not matter as they are wired in series. One (...71) is normally open and allows current when the coil feed tube is cold, and the other (....73) is normally closed and stops current if the defrost cycle malfunctions and overheats the coil assembly. Both are closed and allow current when a defrost cycle is needed.

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Ronald -
June 11, 2015
A:

Ron again. I am not posing as an expert, but a few things are just obvious when you know what they are supposed to do.

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Ronald -
June 11, 2015
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Q:

Loud buzzing vibration noise. GTH18EBTZRWW Ge Refrigerator t series

A:

Thank you for your question. I can understand your concern about the noise. A buzzing noise will usually be from the fan motor. It could be a vibration noise or the damper may be making this noise when it opens and closes but the most likely problem will be with one of the motors. There is a motor in both the freezer and fridge sections and also under the unit. I provide an image below to help.

Once you determine what part needs replacing order here www.SearsPartsDirect.com

Thank you for choosing Manage My Life.

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dtova00 -
Sears Technician
October 07, 2013

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