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Skip Meulners Posted on Apr 27, 2014

Can i bypass the defrost thermostat until i can get a new one

Coils all froze up freezer at about 30deg. and frig getting warmer by the day. after manually defrosting the coils i could tell the defrost thermostat was bad. popped top and filled with water... got a new one on order, and everything else tested and seems to working fine. can i bypass the thermostat and defrost coils all together until the new one arrives? I beleive all i would have to do is follow to and from the defrost element (which has the thermostat in line) and connect those two wires correct? ( i ask because there are other wires that would lead to an ice maker if one was installed.

1 Answer

mark jancsics

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  • Contributor 50 Answers
  • Posted on May 04, 2014
mark jancsics
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Take a hair dryer and defrost the coils totally this should keep you for a week or so.
turn the ref off and do it,do not hot wire it,you will melt the liner,dangerous.

5 Related Answers

Anonymous

  • 770 Answers
  • Posted on Feb 22, 2008

SOURCE: fridge doesn't get cold enough

you have either a Defrost heater / a defrost timer/ or a defrost bi-metal that is bad. if you post your model # i can look it up and show you how to set it into defrost to see if the heaters are ok
Since you replaced the timer already that leaves two things you need to check set it into defrost if you know how and remove the panel in the back wall of the freezer you should see the heater(s) are on if not check pwr 120vac at the heaters if 0 volts the bi-metal is bad

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Ron Coons

  • 2651 Answers
  • Posted on Mar 06, 2008

SOURCE: ice maker making hollow cubes

check your incoming water pressure, change the water filter recently? hollow ice cubes is a sign of low water pressure

freetek

Steve Allison

  • 5569 Answers
  • Posted on Jun 10, 2008

SOURCE: GE built in Fridge does not defrost and freezer ices up

Defrosters are commonly controlled by a primitive timer and this may have a 'dry' and a 'wet' (humid) climate setting that will cause the defroster to cycle generally every 12 or 24 hours.
If set wrong (by accident or on purpose), it can allow too much frost to accumulate before attempting to defrost.
This can cause a gradual buildup of ice.

Also the heating element for the freezer may have failed open so it never heats at all. The connections that need to be checked are often buried between the in- and outside walls.

The timer is probably still OK since you apparently aren't having a problem on the refrigerator side.

Anonymous

  • 725 Answers
  • Posted on Aug 10, 2008

SOURCE: freezer not working

Sounds like a defrost problem or a plugged drain... to get it to work temporary defrost the freezer. Unplug the refrigerator, open the door and get a blow dryer and warm up the freezer. wait until the water stop dripping out or about 12 to 24 hours and then you can plug it back in . it will work for 2 to 3 weeks.

To unplug the drain.defrost the freezer .remove the back cover. Use a pipe cleaner to clear the drain. pour a few cups of hot water down the drain.

The defrost systems is:
HEATER-DEFROST
THERMOSTAT-DEFROST
Adaptive defrost control
Start with the adaptive defrost control board. The fresh food section light switch and light bulb must work. To initiate a defrost cycle, open the door and push the light switch in and out 5 times within 6 seconds. The compressor and fans should shut off and the defrost heater should come on. Open the door and push the light switch in and out 5 times within 6 seconds to remove the refrigerator from the defrost mode and back into a cooling mode.
Frigidaire - referance model FSC23F7DSB3
This product comes equipped with an Adaptive Defrost Control (ADC). To activate manual defrost, press and hold the Freezer temperature UP (WARMER) key while pressing the Fresh Food temperature DOWN (COLDER) key 5 times within 6 seconds. A �d� in the freezer temperature window and �F� in the refrigerator temperature window will display when the heater is activated. To deactivate manual defrost, press and hold Freezer temperature UP (WARMER) key while pressing the Fresh Food temperature DOWN (COLDER) key 5 times within 6 seconds. �d� and �F� will be displayed until the defrost cycle is complete. (approx. 8 minutes)

Heater / Thermostat
You will have to remove the back panel of the freezer to check the heater for and thermostat for continuity. Heater are the lease likely part to go bad... I always change thermostat and timers together.
let me know if this helps or we can chat if you need more help.

Anonymous

  • 1543 Answers
  • Posted on Feb 05, 2009

SOURCE: GE MDL:TBX25ZLB Top Freezer Refrigerator Freezes up

You need either a WR51X314 defrost heater, or more likely a WR9X413 defrost control (defrost timer) for your TBX25ZLB. Unfortunately, these part are listed as "No Longer Available". Next time you want to defrost it, find the defrost control at the back of the refrigerator section, very near the temperture set knob (the one that goes from 1-9). You will most likely have to pull the knob off and remove the cover to find the visible part of the defrost control timer. It is a round flat looking plastic part, usually black or white, smaller than a dime, with a groove in it which you can turn with a flat blade screw driver. Turn it slowly clockwise (they usually make a clicking noise as you turn them) until it makes a rather loud click. Now if the refrig was running, it will stop and turn on the defrost heater. If the heater is good, it should begin to glow red and heat until the frost melts or the timer advances back to the run position (usually about 30 minutes). (if there is lots of build up on the freezer, it will most likely take longer than 30 minutes of defrost heater operation to melt it all. You can help it with your hair blower, if you think you need to. ) All this will help to eliminate the defrost heater itself as the problem. A larger parts store may have a defrost control timer left in inventory, or be able to suggest a generic defrost control which you can use. In the mean time, you can defrost your refrig manually this way once a week or so for 45 minutes, then manually advance the timer again to the run position. (If the defrost control timer is bad, it usually will not advance itself back into run) Send a comment with how things turned out or if you have any other questions. Please don't rate this, as anything but a Fix-Ya lowers my score.

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I have a GE Model #TBX18NI- 18.2cuft top freezer/refrigerator, and the freezer part is working great, but the refrigerator part seems to be getting warmer and warmer. I've tried adjusting the temp...

The frig has a defrost timer which activates an electric element which cyclially defrosts the evaporator in the freezer.If either the heating element or the defrost thermostat are faulty the freezer evaporator will freeze solid not allowing cold air circulation to the rest of the frig.
At a suiteable time empty fridge contents into insulated containers and turn fridge off at powerpoint and allow to fully defrost leaving doors open.The evaporator coil in frostfree is normally located behind the rear panel of the freezer.If you do not have defrost heater it will take 3-4 hrs for complete defrost.
After defrost turn fridge back on and make sure items to be returned to freezer are free from moisture and ice and keep freezer open for minimum of time as moisture will start building up onthe evapoator.
If the fridge works ok for a couple of days and the the original problem returns the problem is with defrost thermostat or defrost heater
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Auto defrost is broken

Find the defrost timer and turn it with a screw driver (will only go clockwise) until it clicks.n wait 10-15 min. If the defrost starts to work (Freezer will get warmer heaters kick on) the timer is bad. If not you will need to check the deforst heater (behind back panel of freezer) and thermostat (silver cylinder with 2 wires on the evap coil) The timer is eithr under the box behind the kick plate (clean the coil while you are there) inside the refrigerator (look in the top for a small hole with a funny knob) or back behind the frig near the compressor( clean here as well).

If it goes into defrost and defrosts, rotate the timer until it clicks again and the compressor should start again.

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if there is ice build up you have a defrost problem. either the heater bimetal thermostat timer or evap fan could be bad. you could also have a stopped up drain. if the coils get too much ice build up the air wont beable to travel through them and the bad air flow will cause the fridge to become warmer
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Frig has ice build up inside, all over coils and where it drains from freezer-help!! I just defrosted it this morning. Could it be that drain is froze, if so what can I do. And what will happen if the ice...

Most likely your defrost cycle is not working. That you've to check out the timer the defrost element and the defrost thermostat. Hope this'll help, have a nice day, God Bless
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I have a Jenn-Air Model # JCB2388GRW. The freezer side frosts over on the coil and so the fridge side is warm - I can fix it by taking off some panels in the back of the freezer and defrosting with a hair...

You could fix it yourself. You have a defrost component failure. Most likely the defrost thermostat or bad heater element. you should see these in the freezer compartment and can run some tests to find the problem. First you need to bypass the defrost thermostat and then manually turn the defrost timer clockwise with a screwdriver until you hear a loud click(the timer is located in the frig compartment next to the control thermostat)You will be in defrost mode. If heaters come on then defrost therm is bad. If heaters do not come on then the heater is bad. you can do it! , I can help
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Neither freezer or fridge sides are getting cold enough. There was ice buildup on the back of freezer where the air comes out, but I removed all this and 2 hours later, still not cooling. Fan is running,...

You have a defrost problem. Common problem on most frost free refrigerators because the ice buildup does not allow efficient heat transfer to evaporator coil. You will need to remove the cover in the back of the freezer compartment (you know , where you scraped of the ice).When you remove panel you will see a buildup of ice on your evaporator coil. This will have to be thawed out by hairdryer or some other means before you move onto next step.Next you will see a heater element (black thingy ) or glass tubes with internal elements .These are your defrost heaters. They can usaully be visually inspected but best to use an ohmeter to check continuity.If you have good heaters you will want to put frig into defrost by manually turning the defrost timer clockwise untill you hear frig cut off. (Look for timer inside right frig compartment next to thermostat.) power will now be diverted to heaters and will get hot for duration of defrost cycle. If defrost thermostat is bad this could be the case of problem( round looking disk thingy clamped to coil and wired before heater) You can check by bypassing the defrost therm directly to heater and see if heater works while in defrost cycle.You will want to replace it as this is the device that turns off the heater so as not to overheat and melt plastic in freezer.Just reinstall everthing and you should be good to go.
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Refrigerator not cool

I don't know this particular frig, but evidently the defroster doesn't work. Frost buildup has blocked the flow of cold air.

There is a defrost timer, under the frig, accessible from the front. You can turn it with a screw driver. Turn it till you hear a click. If the timer hasn't been turning, that should turn on the defroster, a heating element nested among the freezer coils. Wait half an hour and if it is defrosting, water should be dripping into the drip pan underneath the frig. If so, then replace the defrost timer and you're good to go.

If that doesn't make it defrost, then the problem is probably the defrost thermostat, in with the freezer coils. When the frig defrosts, the defrost heater stays on until the defrost thermostat gets warm. It should be open circuit while warm. But if it is open circuit while cold, it is bad and is the cause of your defrost problem.

If you open up the freezer coils, use a hair dryer to defrost. That is safer than hot water.

Hope you can fix it.

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Freezer works but frig is not cooling

I don't know this particular frig, but evidently the defroster doesn't work. Frost buildup has blocked the flow of cold air.

There is a defrost timer, under the frig, accessible from the front. You can turn it with a screw driver. Turn it till you hear a click. If the timer hasn't been turning, that should turn on the defroster, a heating element nested among the freezer coils. Wait half an hour and if it is defrosting, water should be dripping into the drip pan underneath the frig. If so, then replace the defrost timer and you're good to go.

If that doesn't make it defrost, then the problem is probably the defrost thermostat, in with the freezer coils. When the frig defrosts, the defrost heater stays on until the defrost thermostat gets warm. It should be open circuit while warm. But if it is open circuit while cold, it is bad and is the cause of your defrost problem.

If you open up the freezer coils, use a hair dryer to defrost. That is safer than hot water.

Hope you can fix it.
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Samsung French Door Refrgerator - New

Only two months old? Couldn't you complain to the store?

The way the defroster works is this: There is a defrost timer under the refrigerator. (I'm guessing based on other brands.) That turns on the defroster about three times per day. The defroster is a heating coil with the freezer coils. It heats that until the defrost thermostat gets warm; then it quits defrosting.

My guess is that the defrost thermostat doesn't turn off the defroster... that it continues defrosting until the defrost timer turns the defroster off.

So if you want to fix it yourself, dig into the defrost coils. I don't know where to look on a French Door refrigerator. Find the defrost thermostat, an inch wide unit with two wires. Test it for continuity while it is warm. There should be none. Frozen there should be continuity.

Hope that helps.

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Magtag french door with water and ice despenser door with auto defrost keeps freezing up.

You have a defrost system problem related to the timing device, heaters, or defrost thermostat. Coils for the freezer are inside the back wall and defrosting the surface does not get ice out of coils.
it will not get any better until you have it serviced. This is not normally a project for a do-it your selfer.
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