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Refrigerator not cooling.

Where is defrost timer located?

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  • Anonymous Oct 06, 2008

    FREEZER OVER FREEZING AND BOTTOM NOT COOLING

  • Brgibbs Oct 06, 2008

    Crosley CS2

    sb7DW

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Frost build up on element behind freezer back panel becasue auto defrost isn't working (possibly timer). Frost build up blocks the airflow from freezer into fridge causing it to stop working but freezer still working.

Posted on Apr 18, 2009

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Posted on Jan 02, 2017

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Amana refrigerator bottom freeze is not cooling; about 8 years old; the cooling switch was replaced and still does not cool


Kim pull refrigerator away from wall and unplug power. Remove lower panel that cover compressor and condenser fan and condenser coils. Don't wait too long but feel the top of compressor and tell me if cool, warm or too hot to hold had there. Let me know those results as I gather up the possible problems that could be related. Did you by chance check the defrost timer by turning timer through opening below and behind the Control panel=> ARB2217CSR Control Panel Did you say you changed a switch or thermostat here? See the defrost timer in photo at location 12? Try turning clockwise slowly until compressor starts or stops what ever may be happening. If stuck in defrost the timer part number=> 67001036 Defrost Timer It is possible that is the only problem but I will wait until I hear from you on turning the defrost Timer and feeling the top of compressor. If this post is helpful please rate, Thank You, John Tripp/AKA Sea Breeze

Nov 22, 2011 | Amana ARB2217CSR Bottom Freezer...

2 Answers

Defrost is stuck in one all time it not cooling or freezing


A DEFROST TIMER is a cycling device, it times the frequency and duration that the defrost heater coils melt the ice that builds up around the evaporator coils. If ice is allowed to build up, air will not be able to freely flow past them - resulting in reduced efficiency and sometimes a drastic warming of the cooling unit.

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Most of the time, the defrost timer is in the cooling mode, allowing the compressor to activate when the thermostat signals it to. The remaining part of the cycle (usually less than 30 minutes)the timer is in defrost mode. In this mode, it signals the defrost heaters to melt the ice build up on the coils. This defrost action is limited by the defrost thermostat. If your DETROST TIMER go to bad, one symptom would be if your refrigerator is not cooling. Although there are many causes of this symptom, A stuck defrost timer can be one of them. The timer can get stuck in cooling (compressor activated) or defrost mode (defrost heaters activated) for usually two reasons:
- The timer motor can fail for one.
- The gears can also become locked up.

No matter what the reason is or which mode the defrost timer gets stuck in, the refrigerator can stop cooling. When the refrigerator is stuck in defrost mode, the compressor no longer comes on to cool the unit. If the timer gets stuck in cooling mode, the evaporator coils never get a chance to defrost, causing ice build-up to the point where there is a complete blockage of airflow past the coils.

The defrost timer can also cause the refrigerator to stop cooling due to failure of the internal switch which activates either the compressor or heater coils. Finally, when doing any repair on a refrigerator, check the condenser coils for dust buildup and clean accordingly.

According woth yur brand and model, look the part replacement in this link: partselect.com/refrigerator+test-defrost-timer+repair.

Good luck.

Jul 16, 2011 | Refrigerators

1 Answer

Frigidaire PLHS269ZDB9 is not getting cold enough to freeze or make ice. I took off the panel , there is an ice block on the thermostat to the evaporator. trying to defrost.


When the refrigerator is running ( cooling mode ) the defrost timer contacts prevents any power from getting to the defrost heater. When the defrost timer turns off the power to the compressor and fan motor(s) the power is then redirected to the defrost system. The defrost timer motor


Defrost thermostat:
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 closed circuit again. 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 defrost thermostat is located near the defrost heater and is wired in series. It is usually located at the back of a side by side freezer, behind the freezer back wall of a top freezer or under the floor. It will be necessary to remove obstructions such as the contents of the freezer, freezer shelves, icemaker and the inside rear or bottom panel of the freezer. At room temperature the defrost thermostat is an open circuit ( no continuity ) and when cooled down the defrost thermostat closes the circuit ( has full continuity ) to allow the defrost heater to come on.



Defrost timers:
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.

*Some defrost timers are a constant or continuous run timer, which means when ever the refrigerator is plugged in the defrost timer is powered up and running. Some defrost timers are an accumulative run timer, which means when the refrigerator is off the defrost timer is off and not running, when the refrigerator is running the defrost timer is running. This is also sometimes called a demand defrost. The power for the defrost timer goes through the cold control first on an accumulative defrost system. The timers are often the same but will be wired differently to get the different operations.



Defrost heater:

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.


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Some newer refrigerators have been using an electronic board instead of an mechanical defrost timer. The adaptive defrost control does the same job as the defrost timer ( shuts off the refrigerator cooling items and redirects the power to the defrost heater for the defrosting cycle, then redirects the power to the compressor and fans to come back on when the defrost cycle is over ). This adaptive defrost system is a bit different when testing, normally speaking if the defrost heater and defrost thermostat ohm ok, we replace the adaptive defrost board.


Nov 28, 2010 | Frigidaire Refrigerators

1 Answer

Coils freezing up, dropping temp Where is the defrost timer located?


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The defrost timer and be on the roof of the refrigerator the floor of the freezer or the main board in the back of come refrigerators...
Check out these tips...they can help you figure out whats going wrong with your refrigerator and why it is not cooling

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heatman101

Sep 11, 2010 | Admiral Refrigerators

2 Answers

Where is the hotpoint HSS251FMD WW defrost timer located?


Hi, I think Your model number is HSS25IFMDCC . There is no defrost timer on your refrigerator, main relay board controls defrost cycles in this fridge. main board p/n WR55X10942 But I suggest to check on heater and defrost switch first - more common problem on this refrigerators. here is my video. hope it helps.

Aug 24, 2010 | Hotpoint HSS25IFMCC / HSS25IFMWW Side by...

1 Answer

Everything in ref freezing up


1)check the temperature setting.it should be set on normal mode. 2) check if the ventilation in the fridge are blocked .there are two possibilities you will have to check 1)the defrost timer 2)the evaporator coil. How a common frost free defrost cycle works and the main parts. When the refrigerator is running ( cooling mode ) the defrost timer contacts prevents any power from getting to the defrost heater. When the defrost timer turns off the power to the compressor and fan motor(s) the power is then redirected to the defrost system. The defrost timer motor. Defrost timers:
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.
*Some defrost timers are a constant or continuous run timer, which means when ever the refrigerator is plugged in the defrost timer is powered up and running. Some defrost timers are an accumulative run timer, which means when the refrigerator is off the defrost timer is off and not running, when the refrigerator is running the defrost timer is running. This is also sometimes called a demand defrost. The power for the defrost timer goes through the cold control first on an accumulative defrost system. The timers are often the same but will be wired differently to get the different operations.
------
the evaporator coils are located at the inner side of the freezer section.if the ice gets collected in the coil and the evaporator fan stops running then the inner system of refrigerator will get over cool and this problem happens.
--------
now to solve the issue .if to check evaporator coil is faulty or not there is a system.just unplug the unit from main power outlet then wait for 24 hours.then replug the power cord in the main power outlet.in 24 hours all the ice collected in between the coil and anywhere will get melted and then check out.if it works properly the problem was ice in coils.but if same problem then defrost timer needs replacement,you can get new timer friom
--- www.repairclinic.com
--------

This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

Nov 10, 2009 | Frigidaire ATF6000ES Front Load Washer

1 Answer

WHERE IS THE DEFROST TIMER LOCATED ?


Hi

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.
*Some defrost timers are a constant or continuous run timer, which means when ever the refrigerator is plugged in the defrost timer is powered up and running. Some defrost timers are an accumulative run timer, which means when the refrigerator is off the defrost timer is off and not running, when the refrigerator is running the defrost timer is running. This is also sometimes called a demand defrost. The power for the defrost timer goes through the cold control first on an accumulative defrost system. The timers are often the same but will be wired differently to get the different operations.

Please do rate the solution as FixYa and revert for further assistance.

Thanks
Rylee




May 31, 2009 | Refrigerators

1 Answer

Why is my Amana Fridge (Model number SSD522T) not defrosting and fan only works sometimes?


When the refrigerator is running ( cooling mode ) the defrost timer contacts prevents any power from getting to the defrost heater. When the defrost timer turns off the power to the compressor and fan motor(s) the power is then redirected to the defrost system. The defrost timer motor
 
Defrost thermostat:
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 closed circuit again. 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 defrost thermostat is located near the defrost heater and is wired in series. It is usually located at the back of a side by side freezer, behind the freezer back wall of a top freezer or under the floor. It will be necessary to remove obstructions such as the contents of the freezer, freezer shelves, icemaker and the inside rear or bottom panel of the freezer. At room temperature the defrost thermostat is an open circuit ( no continuity ) and when cooled down the defrost thermostat closes the circuit ( has full continuity ) to allow the defrost heater to come on.
 
 
Defrost timers:
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. 
*Some defrost timers are a constant or continuous run timer, which means when ever the refrigerator is plugged in the defrost timer is powered up and running. Some defrost timers are an accumulative run timer, which means when the refrigerator is off the defrost timer is off and not running, when the refrigerator is running the defrost timer is running. This is also sometimes called a demand defrost. The power for the defrost timer goes through the cold control first on an accumulative defrost system. The timers are often the same but will be wired differently to get the different operations.
 
 
Defrost heater:
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.
 

Jan 06, 2009 | Refrigerators

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