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How do I rewire the new thermostat to the defrost timer?

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  • Refrigerators Master
  • 473 Answers

Not sure what you need to do so I'll give you some basic info. The main thermostat is the on/off switch for the complete refrigerator and sends power to all components. The defrost timer is in the circuit between the compressor and defrost heater system. The clock motor on the time opens and closes 2 sets of contacts. The compressor contact are closed for approx 6 to 8 hrs and while they are closed the heater contacts are open. When the timer advances to the defrost cycle, the heater contacts close for about 30 to 45 minutes and at the same time the compressor contact will open. Hope this helps your project.

Posted on Apr 16, 2015

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Posted on Jan 02, 2017

bobicehouse
  • 1524 Answers

SOURCE: Freezer thawed. Replaced temperature control, replaced defrost timer, replaced defrost thermostat. Compressor relay is cycling. No cooling still. Help!

Why were those parts changed? Was the compressor cycling on overload at the time?
If so, you should have first replaced the relay/overload combination and the see what happened.

Posted on Apr 26, 2009

  • 44 Answers

SOURCE: Freezer frosts up and will not defrost itself

It could also have a bad defrost heater. The heater and defrost thermostat are located mounted on the evaporator coil and the timer is usually mounted in the control panel with the control thermostat or in the compressor compartment.

Posted on Aug 28, 2009

  • 88 Answers

SOURCE: where can i get a new Defrost Thermostats an

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Posted on Aug 18, 2011

Sea Breeze
  • 4654 Answers

SOURCE: runs with old defrost timer but not new timer

Where did you get the new timer and what is the part number? It is possible you have a defective defrost timer even if new but the most likely problem is you have a universal timer and have the detachable wires for the clock portion and going to the wrong terminal or a wire is not seating properly over the four tabs for its power source. Your refrigerator uses a WR9X502 Defrost Timer
2_28_2013_11_30_18_pm.jpg

I will be here if you need help or have questions, Thanks Sea Breeze

Posted on Feb 28, 2013

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Defrost timer does not advance after defrost


Hi,

During this time of defrost you manually advanced into, Did the heater turn off them self? If they did the defrost thermostat does work, if the heaters stayed on the entire time (1hr) than the thermostat needs to be replaced as well as the timer. The thermostat is a cut off device to prevent the over heating of the freezer and liner (safety device). Think of a defrost timer as an egg timer, this timer runs regardless of function just advances like a clock. The thermostat turns off the heaters when they reach a temp rather then time. I hope this answered your question, good luck

Aug 17, 2014 | Refrigerators

Tip

Defrost Solutions


Most refrigerator problems begin with a failed defroster.
This can lead to sticky smelly ice, a roaring freezer fan and a loss of cold in the refrigerator compartment.

The freezer remains quite cold though, but frost continually builds up.
Manually unplugging the refrigerator will defrost the refrigerator in time, but that will eat up precious hours as your food slowly spoils.

Your defrost circuit consists of a defrost timer:
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Defrost heater:
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And a Defrost Thermostat:
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The weakest link here is the defrost thermostat.
All refrigerators that come equipped with a defrost function use all 3 of these parts.

The second weakest link is the defrost timer since it has an electric motor inside it's case which wears out in time.

Defrost heaters are pretty similar to the heating element on a stove and rarely need replacement.

Every defrost thermostat has a temperature range stamped on the body of the part and should be replaced with the exact same temperature range replacement part. To troubleshoot this part you simply short the 2 wires together which lead to the thermostat to bypass it, rotate your defrost timer until you hear a click and wait for the defrost heater to begin melting the frost. The defrost timer has a tiny hole in the middle with gear teeth protruding outwards. This gear will only rotate one way so you cant make a mistake while rotating to the defrost cycle.

To troubleshoot the defrost heater make sure the thermostat is shorted as mentioned above and that the defrost timer is in the defrost mode.
Now, using either a digital or analog multimeter connect to both leads of the heater and your reading should be 100 to 120 volts AC. If the voltage is there but your heater is cold, you need a new heater.
If the voltage is absent and you get no reading then your timer is defective and will need to be replaced.

Rarely is there more than one failed part in a defrost circuit, and these minor parts are fairly inexpensive.

Good luck and Vote for this tip if you have found it to be helpful!

on Jul 31, 2010 | Refrigerators

1 Answer

Freezer works but fridge does not


Lets see if the defrost timer being turned clockwise slowly will force defrost and cause things to get colder. On page 5 of the (click HERE=>ET4WSKXKQ02 Parts Manual ) you will see location 4? That is the 2188371 Defrost Timer
a17e87fd-de4a-4c2d-8f91-387a705d8efc.jpg

inside the fresh food com[partment at the top and behind the control panel will be the 2188371 Defrost Timer If forcing defrost solves the cooling problem then just replace the 2188371 Defrost Timer and if not we will need to check the 2176942 Defrost Heater Assembly and the 2192096 Defrost Thermostat Don't buy ba defrost thermostat until we discuss a different way of getting one to work should you need one (last resort because of cost) My focus is defrost timer and defrost heater at this point you will not need all the wires on the defrost thermostat should you need one just splice a simple defrost thermostat into the wiring harness. Below is a short movie on testing the defrost heater or click HERE Talk with me and we will get this refrigerator working, Sea Breeze
Refrigerator Defrost Heater Test
Refrigerator Defrost Thermostat Test


Apr 01, 2013 | Whirlpool Refrigerators

1 Answer

Runs with old defrost timer but not new timer


Where did you get the new timer and what is the part number? It is possible you have a defective defrost timer even if new but the most likely problem is you have a universal timer and have the detachable wires for the clock portion and going to the wrong terminal or a wire is not seating properly over the four tabs for its power source. Your refrigerator uses a WR9X502 Defrost Timer
2_28_2013_11_30_18_pm.jpg

I will be here if you need help or have questions, Thanks Sea Breeze

Feb 28, 2013 | GE Refrigerators

1 Answer

We have a whirlpool et1rhmxkq03. I have replaced defrost timer and thermostat. Defrost timer seems to stall and freezer thaws and the compressor stops running. I tap the control housing in the refr


The problem is with the "thermostat" right next to the defrost timer. When you tap on the control, you are actually tweaking the thermostat and not the defrost timer. Here is the thermostat to order.
Here is a diagram of the control box. The thermostat is number 13 and the defrost time is number 4.

Nov 11, 2012 | Refrigerators

1 Answer

Lowest shelf and crisper drawers freeze food consistently. Have turned the temp dow to lowqest setting of #2.


Hello there,
When you are experiencing ice build up in your refrigerator, it simply is due to a faulty defrost unit. The defrost unit is composed o9f the defrost timer, defrost thermostat and the defrost heater. Once the freezer is building up ice, the defrost unit turns on the heater, then the defrost thermostat turns off the compressor while the defrost timer, settings the routine timing for the activity.
Once a component out of the three develops a fault, the routine is stopped and then ice begins to build up in the back of the freezer or at the bottom depending on the type of refrigerator it is.
The solution to the problem is for you to have the defrost timer, defrost heater and defrost thermostat tested, that way you will be able to tell the faulty component and replace it with a new one.
To carry out the testing and replacing of these components, please read this tips, it will guide you on testing the components and replacing them.
Defrost thermostat http://www1.fixya.com/support/r10513592-test_defrost_thermostat http://www1.fixya.com/support/r10513650-replace_defrost_thermostat
Defrost timer
http://www1.fixya.com/support/r10523722-test_defrost_timer http://www1.fixya.com/support/r10523742-replace_defrost_timer
defrost heater
http://www1.fixya.com/support/r10523771-test_defrost_heater http://www1.fixya.com/support/r10523754-replace_defrost_heater

Hope this was helpful to you. All the best. Elect_Comp

Sep 26, 2011 | Refrigerators

2 Answers

U-line 75R was not cold. Shorting the two wires at the thermostat, the motor runs and starts to get cold. Replaced the thermostat, but it didn't run at all. Please help. Thanks


There is a slight possibility that the unit's defrost timer just happen to be in defrost when you replaced the temperature control. Try advancing the defrost timer (or just let it sit for about 1/2 an hour and see if it comes back on). If you have more questions, let me know. Hope this helps!

Dec 11, 2009 | U-Line 75R Refrigerator

1 Answer

Freezer frosts up and will not defrost itself anymore. Do I need a new defrost timer and/or thermostat? If so, where is the timer/thermostat located in the refrigerator?


It could also have a bad defrost heater. The heater and defrost thermostat are located mounted on the evaporator coil and the timer is usually mounted in the control panel with the control thermostat or in the compressor compartment.

Aug 28, 2009 | Maytag Refrigerators

1 Answer

Gets stuck in defrost cycle, new thermostat already fitted


If you would like to stop the defrost timer from intermittently causing this, the defrost timer will need to be replaced. It's a simple part to replace and not expensive. Thanks, Sea Breeeze

Apr 27, 2009 | Refrigerators

1 Answer

Freezer thawed. Replaced temperature control, replaced defrost timer, replaced defrost thermostat. Compressor relay is cycling. No cooling still. Help!


Why were those parts changed? Was the compressor cycling on overload at the time?
If so, you should have first replaced the relay/overload combination and the see what happened.

Apr 26, 2009 | Refrigerators

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