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In a GE freezer will a bad thermister alone cause the freezer to frost up

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  • Refrigerators Master
  • 9,472 Answers

It sounds like you may have a defrost problem with the unit. If so, you will need to test the defrost thermostat and defrost heater. It should read closed for continuity when cold. You can test this with a multi-meter.
If both parts are good, Heater and thermostat, you will need to replace the MAIN CONTROL BOARD. Once the problem is repaired, you will need to thaw out the ice on the coils before the unit will operate properly.
Here is the control board if you should need to order it.

Posted on Nov 01, 2012

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

eagle338
  • 4889 Answers

SOURCE: freezer no frost

This is probably due to the failure of defrost timer or the heating coil..Try this
1)The defrost timer is sometimes found behind the front grill of the refrigerator. It may also be found behind a cover plate inside the refrigerator or freezer, in the temperature control console, or behind the refrigerator near the compressor.

The timer is usually held in place with one or more screws. Remove the screws and gently pull the timer out far enough to disconnect the wiring connector.

Locate the timer switch and turn it clockwise until you hear it click. One click and the refrigerator shuts off = defrost mode, second click the compressor and fans come back on = run/cooling mode.
2)If this doesnt work then Test the heating element for continuity using a multimeter. Set the multimeter to the ohms setting X1. Place a probe on each terminal. The multimeter should display a reading somewhere between zero and infinity. Because of the number of different elements we cannot tell what your reading should be, but we can be certain of what it shouldn't be. If the reading is zero or infinity the heating element is definitely bad and should be replaced. Proper power ( careful!! ) to the heating element ( 110-120 volts AC ) and the defrost heater does not come on = bad defrost heater.

Posted on Oct 15, 2007

  • 310 Answers

SOURCE: GE fridge: Freezer working but fresh food side not cold

The problem is the refrigeration evaporator, located in the freezer section is blocked with frost and ice and not air can pass through it. Four different failed parts can cause this problem. The defrost timer, the defrost heater safety thermostat, the defrost heater, or the evaporator fan motor. Unless you are very good with a volt-ohm meter, it wiil be difficult to distinguish which one of these parts has failed. A qualifed refrigeration service tech or a good appliance service tech with a refrigeration certification can find this quickly.

Posted on Jan 13, 2009

whytfang
  • 170 Answers

SOURCE: excessive frost buildup in bottom freezer section of Kenmore refr

There are several reasons this can be happening...

1. The seal on the door may have a tear or may not be seating properly...this allows excess warm air into the freezer compartment and in its effort to remove the same ...frost appears.

2. There is something call a thermistor that is cycled on and off as needed to remove excess frost accumulation and or ice buildup on the evaporator (freezer) coils...it is a heat strip which actually defrost the frost/ice. if this is not working frost will accumulate and eventually it will become Ice......now the remarkable thing about Ice accumulation is that you would think everything would remain cold or get colder ..however in this case the opposite occurs...it insulates the coils and thereby increasing the temperature...put a thermometer...one that is calibrated properly...(calibration can be set by placing a thermometer into a glass of ice water...the temp of a glass of ice water..after a few minutes setting will be exactly 32 degrees)..if the temperature of your refrigerator is gradually rising over the period of a week...you will need to call a tech or replace the thermistor and or trouble shoot other problems that can occur such as..

3. The evaporator fan may be going out although they usually make a high pitched whining noise of a whirring noise before they go out...not always and if they are intermittently cycling off then frost would build up...do you always here a fan running when you open the freezer...if so that is good...fan is working...but it may be cycling off at times when no one is aware.
P.S. the odds of your ice maker causing this are very, very slim...in 35 years in the industry ..I have never had an ice maker cause frost due to water spray...it will almost always result solid sheets of Ice..if it evers does cause a spray....which like I said is rare...lottery ticket type rare :-)

This should lead you in the right direction...if you need help in finding a reputable service company in your area let us know..I hope this has been helpful..if so PLEASE rate me....thank you... .......The Fang

Posted on Mar 26, 2009

tborn6
  • 700 Answers

SOURCE: GE Model GSH22JFTA Top of Fridg and Freezer not cold

check the door gaskets for air leakage

Posted on May 21, 2009

garing
  • 998 Answers

SOURCE: I have a frost free GE fridge freezer ( freezer on

cup at top ,back in the middle of fridge back wall must be cleaned. Also find other end of hose by compressor and blow in it to clear it

Posted on Aug 05, 2009

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1 Answer

Freezer is slowly getting warmer - water dispenser won't dispense (occasionally) turbo cool won't work


Open freezer door and look for any frost on the back wall inside the freezer. That would indicate a defrost problem.
Disconnect power to refrig. Unload freezer, Remove shelves and back panel inside freezer. Melt frost with a hair blower. Replace defrost heater located at the bottom of the heating coils. (Note: It may look different than the original, but insturctions enclosed with replacement cover that) Might as well replace the evaporator thermister at the same time, as your problem is about 98% of the time one or the other of those parts. The thermister is a white pencil shapped item, about an inch long, located cliped to the top of the cooling coils you just defrosted.
If you don't have the parts on hand, defrosting only will get your refrig working again for several days, while you obtain the parts.
Note: non-water dispensing is the result of the cold air from the freezer not being able to continue over the frost blocked coils, so it migrates back though the return air vent in the bottom of the refrig, resulting in a frozen water line, and often freezing in the bottom bin of the refrig.

Jan 02, 2011 | GE (PSS26MSRSS) Side by Side Refrigerator

1 Answer

Unit not cooling down,compressor running,condenser fan running. suction line just cool,condenser line barely warm.


Check if evaporator fan is running. Is there any frost buildup on freezers evaporator cover? If so you have a defrost problem (bad heater, defrost thermostat, thermister, defrost timer or circuit board ). If no frost and the freezer is warm then you most likely have a sealed system problem(leak, restriction, bad compressor) which is costly to repair.

Oct 19, 2010 | GE Â 17.9 Cu. Ft. Top-Freezer...

1 Answer

Refrigerator not cool enough


Is it running? If so, the evaporator fan in the freezer and the condenser fan(if there is one) by the compressor need to be running. Check if compressor is running. Is there any frost build up on the evaporator cover? If so you have a defrost problem (bad heater, defrost thermost, thermister, defrost timer or circuit board). Check air channels between freezer and refrigerator sections for any ice blockage. If everything checks good you may have a sealed system problem which requires a repairman to fix and is expensive.

Oct 12, 2010 | GE Â 17.9 Cu. Ft. Top-Freezer...

1 Answer

Freezer fine, fresh food 55 degrees max cold


Check for frost build up in freezer section. If frosting up you will need to check the heater and bi metal. If it's a ge ref. could be thermister or main board

Feb 25, 2010 | Refrigerators

1 Answer

GE side by side. Freezer cold, fridge kinda cool


Generaly the control board controls everything sometimes you have a bad thermister GE has a help line I beleive it costs 20.00 bucks but you will need a meter and know how to use it and they willl talk you thru the repair .

May 30, 2009 | Refrigerators

3 Answers

Food is unthawing


Cmax,

The cause of this is the evaporator thermister. Sounds daunting, doesn't it? It's not. See? This is an electronic component that connects to the main computer and is used to monitor the temperature of the evaporator during the defrost cycle. When it fails, the main computer simply doesn't go into its' defrost cycle. Then you'll see frost build up on the rear panel inside the freezer, your beer compartment will get warm and the fan inside the freezer will run constantly (ahhh!).

The repair is cheap. Seriously cheap (and easy, too!) It'll take me longer to type out the repair thn it would if I'd actually DONE the repair (I type slow). Take a gander at the full size diagram of your fridge's evaporator (freezer) section here. You'll be replacing # 243... it's located at the top of the coils on the left.

You'll need;
Phillips screwdriver
A towel (maybe)
Hair dryer
Wire cutters
Wire strippers
2 Wire nuts (small blue ones) <--- all of this is found at a local hardware store (except for the towel. Unless it's a "shop" towel)

Pull all the frozen stuff outta the freezer and remove the shelves and the basket at the bottom. Now remove the back panel. You'll probably see a huge block of ice now. Your jaw will most likely drop and you'll feel like freaking out..... don't. Grab the hair dryer and melt all of that outta there. (NOTE---> WHEN DOING THIS, KEEP THE DRYER IN MOTION. IF YOU DON'T, YOU RISK WARPING THE PLASTIC INNER LINER)

Now that all the frost is gone, look at the top left of the aluminum coils. You'll see the thermister clipped to one of the tubes (it's the only thing there that has 2 white wires going to it). Remember where it's clipped, then unclip it. Cut the wires close to the base of the thermister, keep the clip. Now seperate the 2 white wires and strip them back about 3/8". Now take your new thermister and install it.

Take one of your newly stripped wires and twist it together to one of the new thermister wires and cap it off with one of the blue wire nuts. Do the same with the next wire. Now take the clip that you saved from the old thermister and place it on the new one and clip it back onto the same tube the old thermister came from.

All you gotta do now is rebuild it all.

Please don't forget to rate this solution as "FixYa". OK?

SG

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Apr 22, 2009 | GE GSH25JFR Side by Side Refrigerator

2 Answers

GE side By Side GSS22JEMDWW


Maybe but there is also a thermister in the defrost system that might be bad. The thermister is a small, white, barrell shape and is as big around as a pencil, It has 2 wires going in it and is attached to the top of the coils in the freezer.

Jun 30, 2008 | GE (PSS26MSRSS) Side by Side Refrigerator

1 Answer

Ref no cooling freezer okay


There's alot of things to check here, David. But, since it's a GE, I'll assume a defrost problem 'cause they are known for those issues. Is there ice/frost buildup on the rear wall of the freezer? If so, it's not defrosting. 3 things will cause a "no defrost" condition. Failed evaporator thermister, Failed defrost heater and failed electronic control. Your model has problems with the first 2, rarely the 3'rd. You can get your machine cooling again by manually defrosting it. Simple, unplug it for 24 hours and leave the freezer door cracked open an inch or so. After time is up, plug it back in and it'll cool just fine for a week maybe two, 'til the frost builds back up again. This'll buy you time to get parts and do the repair and besides... it has to be done anyway. Even if you had the parts in hand and did the repair right now, you'd still have to manually defrost it. Post back and let us know.

Jul 31, 2007 | GE GSS25QGPBB / GSS25QGPCC / GSS25QGPWW...

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