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Defrost thermostat connector

Cannot disconnect the white connector from the defrost thermostat to the defrost heater need help

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There is usually a little tab inside the connector. Use a small flat blade screwdriver and pry into the center of the connection where one slips over the other. If you warm it up with a hair dryer it may pop apart easier. If it is rusted, burnt or corroded, just cut it off and use orange wire nuts to make the connection. Use electrical tape to seal the nuts. 

Posted on Jan 09, 2008

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2 Answers

My fridge is not getting cold.


The most common phenomenon that is known to cause this kind of issue is when you have a gas shortage.
This is not an issue that can easily be fixed by just anyone as it requires whoever is fixing it to do some serious work on the compressors and the gas tanks.
the best way you can do this is to call a home repairer to help you examine it.
Hope this was helpful? If you need more information, please comment here and thank you for using fixya

Jan 14, 2011 | Admiral Refrigerators

1 Answer

My coil was iced up. I defrosted it. While I was in there I took a resistance reading on the defrost heater, it read 35 ohms. I am assuming it is good. Now what controls the heater and how can I check if...


if it's a glass heater you can look at it,if it's all black change it out,i've checked heaters that read good but it still needed to be replaced,like i said pull it out and do a visual look at it,if your machine has a timer,advance the timer by spinning the knob on the timer until you hear a click,when it clicks it's in defrost,if the heater doesn't come on check the defrost thermostat on top of the coil,depending on your machine,some have plug in connectors on the t-stat.you can unplug the thermostat and send power dirrectly to the heater bypassing the thermostat,if the heater comes on then the thermostat is bad,if you don't have the plug in connectors you can cut the wires and bypass the thermostat and see if the heater comes onyou'll have to cut them anyway and then wire nut them together if the thermostat's bad , also you can look at the thermostat,if it's bulgging on the top it's bad,also when you look at the heater,if it's black inside the glass change the heater and the thermostat together.you have to melt out all the ice off the coil before you close up the back wall,if there's a board in your machine there's a white sensor on the top coil,it looks like a bullet, i think the part number is wr55x10025,the older sensors are white but they have a black ring around them near the end of the bullet part,the new sensors are all white, it's a good idea to change that out also.let me know what you find,next time send the model number

Oct 09, 2010 | Refrigerators

1 Answer

GE GSH22KGM Frig not defrosting again


I would suggest replacing the # 4 thermistor , which is a 1 " long white piece with 2 white wires attached , clipped to the top of the coils . This thermistor , tells the main control board , the temperature of the coils and the board decides what to do next , such as defrost , end defrost cycle . Also , replace the defrost thermostat , the 1 inch cylinder with 2 wires going to it , which is also clipped onto the coils . This thermostat , cuts the heater off when it reaches a certain temperature , to keep the food from defrosting . It may also help , to replace the # 5 thermistor , which is below the coils , slid into a housing , with 2 white wires going to it also . This thermistor , tells the board , the actual freezer temp , so the compressor will cycle off/on , and the fan speed also . All 3 parts , are relatively not expensive . Be sure to get wire connectors because they do not come with these parts .

Apr 14, 2010 | GE GSH22KGM Side by Side Refrigerator

1 Answer

Defrost heater not coming on. Where is thermostat? I rotated defrost timer until unit turned off, but heaters do not appear to be turning on. Is there a way to check thermostat and timer?


we ll see how u need to check the defrost timer....
Before testing the defrost timer, unplug the freezer to avoid an electrical shock hazard.
A mechanical defrost timer controls the defrost cycle of the appliance. In older models, the timer runs continuously and roughly every six hours, shuts off power to the cooling system and sends power to the defrost heater. In newer models the timer advances only when the compressor or defrost cycle is running - an improvement for efficiency. As the timer advances, power to the heating element shuts off and power is restored to the cooling system. If the timer does not advance, the appliance will be stuck either in defrost or refrigerate mode, resulting in, respectively, no cooling or frost build-up.
The defrost timer is usually found behind the front grill of the freezer. It may also be found behind a cover plate inside the freezer, in the temperature control console, or behind the freezer near the compressor.
To test whether the defrost timer is simply failing to advance, locate the advance screw and turn it clockwise until you hear it click. This advances it to the next mode. If it was cooling before, it is now in defrost mode. Simply wait about 35 minutes and check whether it has left defrost mode and has resumed cooling (listen for the compressor). If it does not advance, the timer motor is probably bad and the entire timer needs to be replaced. If it advances as it should, then you can follow the steps below to test the switch electrically.
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. The connector can be removed by firmly pulling and rocking it left and right. It is not necessary to note the position of the wires because the connector plug is keyed so that it can be replaced in only one way.

Test the timer for continuity using a multitester. Set the multitester to the ohms setting X1. The timer has four terminals. Locate the common terminal, it should be labeled "3" or "C". If the terminals are not labeled, determine which terminal coincides with the common wire in the connector plug; it is usually the white wire.
Once you have located the common terminal, touch one probe to it. Touch the other probe to each of the three remaining terminals. The multitester should display a reading of zero or near to zero ohms (which indicates continuity) for one pair of the terminals and possibly two pairs. The third pair of terminals should show no continuity (infinity).
Locate the timer switch and turn it clockwise until you hear it click. Now retest the timer as you did above. One pair of terminals should indicate continuity (possibly two pairs). At least one pair should give a reading of infinity. Note however, one of the pairs that showed continuity in the first test should now read infinity and one pair that read infinity should now show continuity. If the defrost timer does not pass these tests, it is likely that it should be replaced.

Before testing the defrost heater, again make sure u unplug the freezer to avoid an electrical shock hazard. The defrost heater is located at the back of the freezer. It may be necessary to remove obstructions such as the contents of the freezer, freezer shelves, ice maker and the rear or bottom inside panel of the freezer. The rear panel may be held in place by retainer clips or screws. Remove the screws or depress the retainer clips with a small screwdriver. There are three primary types of defrost heater elements; exposed metal rod, metal rod covered with aluminum tape or a wire coil inside a glass tube. All three elements are tested in the same way. The heater is connected by two wires.Label the wires and connections so that you can properly reconnect them later. The wires are connected with slip on connectors. Firmly pull the connectors off of the terminals (do not pull on the wire itself). You may need to use a pair of needle-nose pliers to remove the connectors. Inspect the connectors and the terminals for corrosion. If either is corroded they should be cleaned or replaced. Test the heating element for continuity using a multitester. Set the multitester to the ohms setting X1. Place a probe on each terminal. The multitester should display a reading somewhere between zero and infinity. If the reading is not between those two extremes the heating element should be replaced.


this is how u check the thermostat..... again Before testing the defrost thermostat, unplug the refrigerator to avoid an electrical shock hazard. Some defrost systems use a thermostat (a bi-metal switch) to prevent the defrost heater from overheating. The switch is normally closed. During a defrost cycle, the defrost heater causes the metal alloy in the switch to warm and as it does it curls back and breaks the circuit. As the metal cools, it makes a circuit again and the defrost heater starts heating again (as long as the defrost timer is in the defrost cycle). A defective thermostat can prevent the defrost heater from coming on or allow it to overheat which could result in heat damage or fire. The panel may be held in place by retainer clips or screws. Remove the screws or depress the retainer clips with a small screwdriver. On some older top freezers it is necessary to remove the plastic molding to access the freezer floor. Removal of that molding can be tricky -never force it. If you decide to remove it, you do so at your own risk - it is prone to breaking. Try warming it first with a warm, wet towel. The thermostat is connected by two wires. The wires are connected with slip on connectors or a wiring harness. Firmly pull the connectors or harness off of the terminals (do not pull on the wire). You may need to use a pair of needle-nose pliers to remove the connectors. Inspect the connectors and the terminals for corrosion. If the connectors are corroded they should be replaced. Test the thermostat for continuity using a multitester. Set the multitester to the ohms setting X1. Place a probe on each terminal. The multitester should display a reading of zero when the thermostat is cold and a reading of infinity when it is warm (40 to 90 degrees F depending on the model). If the thermostat does not pass this test it should be replaced. with regard to the parts incase u need a replacement..... check out the below link.... http://www.repairclinic.com/GE-Freezer-Parts?s=b3a3c221

Mar 28, 2010 | Kenmore 55612 / 55614 / 5561 / 655619 Side...

2 Answers

Fridge not cooling,frost on back of freezer its a side by side


DEFROST PROBLEM
The evaporator coil behind the cover on the back wall inside the freezer will ice up under normal conditions. Every 8 to 10 hours for around 20 minutes the defrost timer (or in most newer models the electronic adaptive defrost control) will turn the defrost heater on to melt the built up ice. There is a defrost thermostat which prevents the heater from overheating the freezer by breaking the heater circuit when the temp reaches close to 32 degrees F. The entire cooling system shuts off during the defrost cycle and starts back when the timer advances through the cycle.

If this ice is not melted it will continue to build up until the air can’t flow over the coil to circulate the cold air through the freezer and into the fridge. The temperature change in the fridge is usually noticed first followed by the freezer.

If the defrost thermostat is bad, it can prevent the heater from coming on OR it won’t turn the heater off when it gets too warm. It is clamped to the evaporator coil at the top to sense the temp. If it appears to be misshapen it is bad.
With an ohm meter it should show continuity when cold and none when warm.
You can also bypass(disconnect the two wires plugged into it and twist them together) the thermostat to see if the heater comes on then. If it does then you know the thermostat is bad and needs replaced.

The defrost heater is located on the evaporator. It is in a tube which is at the bottom and can also go up the sides of the evaporator. On some types you can see a burnt spot if it’s bad. With an ohm meter it should show continuity from end to end when disconnected from the wiring in the freezer. You can also test the wiring for voltage when it’s in the defrost mode.

If you have a defrost timer you can test it. It can be located under the fridge behind the kick panel on the front. Some are in the fridge with the controls at the top. You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer because that means the timer is not running. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.

If you have an adaptive defrost control instead of a timer, replace it if the heater and thermostat test good. It is located in the fridge with the controls in some models and on the back in others. You can post your model number into one of several appliance parts sites on the internet and search for defrost components to find your parts.

Mar 10, 2010 | Whirlpool Gold White-on-White 21.9 cu. ft....

1 Answer

Defrost heater does not cycle on


you didn't send the full model number,starts with 110.or similar,you have a defrost problem,it could be a couple of things so you need to read out some parts with a meter,you could have a bad defrost thermostat the timer or adaptive defrost board depending on model number,bad heater,if it has a timer you need to advance it by turning the middle with a screw driver until you hear a click and the fan shuts off in the freezer,now you have it in defrost,see if the heater is on,if it is you have abad timer,if it didn't come on check the t stat,if it has plug in connectors on the wires disconnect the t stat and plug the wire derectly to the heater or if you have to cut the wires cut them and bypass the thermostat,if the heater comes on then you know you have a bad t stat,also pull the wires off the heater and check the heater,if the heater is bad it's a good idea to change out the t stat anyway,if it has an adaptive defrost board check the tech sheet that should be behind or on the bottom kick plate,remove it and look it will tell you how to put the fridge into defrost,i think you push in the both door switches 5 times at the same time,if it doesn't go into defrost could be the board,you'll have to still read out the heater with a meter,also if you read out the thermostat it has to be cold,if it warms up it will read open but it still could be good,if you need any more help with this let me know and send model number so i can help better

Feb 18, 2010 | Kenmore 56539 / 56532 / 5653 / 656534 Side...

2 Answers

I would like to receive advice plus sketch etc. for the THERMOSTAT layout - location and Part Number of Fisher & Paykel Refrigerator Model CN405TGWHWH Serial Number: N151258


Hi

Thanks for using FixYa. Before you begin to replace your defrost thermostat, makesure you disconnect the appliance's power supply. The easiest way to do this isto unplug the unit from the wall. Alternatively, you could trip the appropriateswitch in the circuit breaker panel, or you could remove the appropriate fusefrom your home's fuse box.

Please check your refrigerator's defrost thermostat in this picture--

e019c70.gif


Click on the image to zoom in. It is located under the floor of the unit. The thermostat is wired in series with the defrost heater, and when thethermostat opens, the heater shuts off.

The cover plate over the coils needs to be removed. Now remove the freezer door, and then the screws so that each side of outer fridgecover is detached. This will to enable cover plate to slide out. (Outer walls have to be pried out alittle). Defrost thermostat is located behind coils.

Also check the Defrost Timer which is located at bottom offridge frame next to compressor. A couple of screws and unplug and plug in new part. There are two wires leading from the thermostat. They areattached to terminals with slip-on connectors. Gently pull on the connectors torelease the wires from the terminals. You may need to use needle nosed pliersto help you. Do not pull on the wires themselves.




Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks

Rylee

Sep 27, 2009 | Refrigerators

1 Answer

I have an Amana fridge bx20s5w that is not cooling the refrig part and runs much to much.


we ll see how u need to check the defrost timer....
Before testing the defrost timer, unplug the freezer to avoid an electrical shock hazard.
A mechanical defrost timer controls the defrost cycle of the appliance. In older models, the timer runs continuously and roughly every six hours, shuts off power to the cooling system and sends power to the defrost heater. In newer models the timer advances only when the compressor or defrost cycle is running - an improvement for efficiency. As the timer advances, power to the heating element shuts off and power is restored to the cooling system. If the timer does not advance, the appliance will be stuck either in defrost or refrigerate mode, resulting in, respectively, no cooling or frost build-up.
The defrost timer is usually found behind the front grill of the freezer. It may also be found behind a cover plate inside the freezer, in the temperature control console, or behind the freezer near the compressor.
To test whether the defrost timer is simply failing to advance, locate the advance screw and turn it clockwise until you hear it click. This advances it to the next mode. If it was cooling before, it is now in defrost mode. Simply wait about 35 minutes and check whether it has left defrost mode and has resumed cooling (listen for the compressor). If it does not advance, the timer motor is probably bad and the entire timer needs to be replaced. If it advances as it should, then you can follow the steps below to test the switch electrically.
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. The connector can be removed by firmly pulling and rocking it left and right. It is not necessary to note the position of the wires because the connector plug is keyed so that it can be replaced in only one way.

Test the timer for continuity using a multitester. Set the multitester to the ohms setting X1. The timer has four terminals. Locate the common terminal, it should be labeled "3" or "C". If the terminals are not labeled, determine which terminal coincides with the common wire in the connector plug; it is usually the white wire.
Once you have located the common terminal, touch one probe to it. Touch the other probe to each of the three remaining terminals. The multitester should display a reading of zero or near to zero ohms (which indicates continuity) for one pair of the terminals and possibly two pairs. The third pair of terminals should show no continuity (infinity).
Locate the timer switch and turn it clockwise until you hear it click. Now retest the timer as you did above. One pair of terminals should indicate continuity (possibly two pairs). At least one pair should give a reading of infinity. Note however, one of the pairs that showed continuity in the first test should now read infinity and one pair that read infinity should now show continuity. If the defrost timer does not pass these tests, it is likely that it should be replaced.

Before testing the defrost heater, again make sure u unplug the freezer to avoid an electrical shock hazard. The defrost heater is located at the back of the freezer. It may be necessary to remove obstructions such as the contents of the freezer, freezer shelves, ice maker and the rear or bottom inside panel of the freezer. The rear panel may be held in place by retainer clips or screws. Remove the screws or depress the retainer clips with a small screwdriver. There are three primary types of defrost heater elements; exposed metal rod, metal rod covered with aluminum tape or a wire coil inside a glass tube. All three elements are tested in the same way. The heater is connected by two wires.Label the wires and connections so that you can properly reconnect them later. The wires are connected with slip on connectors. Firmly pull the connectors off of the terminals (do not pull on the wire itself). You may need to use a pair of needle-nose pliers to remove the connectors. Inspect the connectors and the terminals for corrosion. If either is corroded they should be cleaned or replaced. Test the heating element for continuity using a multitester. Set the multitester to the ohms setting X1. Place a probe on each terminal. The multitester should display a reading somewhere between zero and infinity. If the reading is not between those two extremes the heating element should be replaced.


this is how u check the thermostat..... again Before testing the defrost thermostat, unplug the refrigerator to avoid an electrical shock hazard. Some defrost systems use a thermostat (a bi-metal switch) to prevent the defrost heater from overheating. The switch is normally closed. During a defrost cycle, the defrost heater causes the metal alloy in the switch to warm and as it does it curls back and breaks the circuit. As the metal cools, it makes a circuit again and the defrost heater starts heating again (as long as the defrost timer is in the defrost cycle). A defective thermostat can prevent the defrost heater from coming on or allow it to overheat which could result in heat damage or fire. The panel may be held in place by retainer clips or screws. Remove the screws or depress the retainer clips with a small screwdriver. On some older top freezers it is necessary to remove the plastic molding to access the freezer floor. Removal of that molding can be tricky -never force it. If you decide to remove it, you do so at your own risk - it is prone to breaking. Try warming it first with a warm, wet towel. The thermostat is connected by two wires. The wires are connected with slip on connectors or a wiring harness. Firmly pull the connectors or harness off of the terminals (do not pull on the wire). You may need to use a pair of needle-nose pliers to remove the connectors. Inspect the connectors and the terminals for corrosion. If the connectors are corroded they should be replaced. Test the thermostat for continuity using a multitester. Set the multitester to the ohms setting X1. Place a probe on each terminal. The multitester should display a reading of zero when the thermostat is cold and a reading of infinity when it is warm (40 to 90 degrees F depending on the model). If the thermostat does not pass this test it should be replaced. with regard to the parts incase u need a replacement..... check out the below link.... http://www.repairclinic.com/GE-Freezer-Parts?s=b3a3c221

Jun 02, 2009 | Amana ARB1914C Bottom Freezer Refrigerator

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