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Defrost system not working - GE Refrigerators

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Hello,

A mechanical defrost timer controls the defrost cycle of the freezer. In older models, the timer runs continuously and roughly every six hours, cuts power to the cooling system and sends power to the defrost heater. In newer models the timer advances only while the compressor or defrost cycle is running - an improvement for efficiency. As the timer continues to advance, power to the heating element is cut 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 "toe kick" 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. 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.

Take care.

Posted on Aug 25, 2010

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Posted on Jan 02, 2017

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Hi,my GE refrigerator have alot of ice in the frezer comparment hoy can i fix? Refrigetor side not cold. Thanks


First off,
Ice build-up in the freezer compartment is an indicator that the defrost system is not working properly.
The defrost system is composed of the defrost heater and the defrost thermostat. If one of them is not working, ice will build up in the freezer compartment.
You need to do a continuity test on the defrost heater and if it is good, very likely the culprit is the defrost thermostat. Just replace the thermostat

Aug 02, 2017 | GE Refrigerators

1 Answer

Bottom mount refrigerator freezer does not work. stays at 36 degrees


Either the evaporator (cooling coil) fan motor has quit working or there is a faulty component in the defrost system. It is probably the defrost system which is comprised of the defrost timer or main circuit board, the defrost heater, or the defrost safety thermostat.

Jan 29, 2015 | Refrigerators

1 Answer

Not cooling properly, food is spoiling in the fridge and ice melting, foods defrosting in freezer. there is frost on the back of the freezer.


Hi.

The back of the freezer icing up means that there is a problem with the defrost system. When the defrost system is not working the evaporator coils freeze up , resulting in compressor and fan running most of the time and in reduced or no cooling as the condenser goes under stress and the system loses efficiency.

Defrost system problems are quite a common issue with refrigerators. Coils freeze because of a defective defrost system. With coils frozen the condenser will go under stress and will loose efficiency. The result is the system not producing enough cold to refrigerate the fresh food section while the freezer section instead keeps working.

Try disconnecting power overnight. Allow the freezer to defrost with power off. If the fridge works after that you have a defective defrost system. In that case the problem may come back after a couple of days. To fix the problem the parts comprised in defrost system must be tested, so to find and replace the defective part.

The defrost system comprises defrost thermostat, heater, defrost control and fan. The parts that fail more commonly are thermostat and heater. Both parts are located behind freezer firewall and tested reading impedance with a multimeter. Element and thermostat are faulty if they return Ohms infinity (the circuit is open) when reading impedance with a multimeter at the part's contact.

If thermostat and element are OK, the next part to be tested is the fan. Fan can be tested by simply checking that the motor is running when energized.

Here a tip explaining how to deal with a similar problem on a different fridge model: Fridge not cooling. Procedure is similar with your model.

You can find parts and diagrams for most appliances using the links listed on this page:
Where do I find parts and diagrams for my appliance?

Regards.


Ginko

Aug 29, 2011 | Refrigerators

2 Answers

Proline fridge/freezer the fridge is frosting up at the back but food is not cold enough


Hi.

You have a problem with the defrost system. Try disconnecting power overnight and allowing fridge to defrost. The problem will not occur immediately after defrosting, but will probably restart after few days, when the evaporator coils freeze again. In that case the defrost system must be tested and repaired.

The defrost system comprises defrost thermostat, heater, defrost control and fan. The parts that fail more commonly are thermostat and heater. Both parts are located behind freezer firewall and tested reading impedance with a multimeter.

A test on the defrost system can be done by performing a complete defrost manually (remove food and leave power disconnected overnight). If the fridge restarts working after defrost, then problem was the defrost system. In that case the problem may return after few days or weeks, meaning that one part in the defrost system is faulty.Parts must be tested.

If the defrost makes no change, then there is a different problem. The damper ventilation system , the temperature control or the refrigerant gas pressure may be the problem. When the problem is one of these faults you get the compressor is running regularly, but will stay on most of the time.

If the motor is humming and clicking most of the time, but not properly starting, then the problem is usually the starter relay/capacitor. Relay and capacitors can be replaced to fix the problem.

Here a tip explaining how to deal with a similar problem on a different fridge model: Fridge not cooling. Procedure is similar on your model.

You can find parts and diagrams for most appliances here:
Where do I find parts and diagrams for my appliance?

Regards.

Aug 08, 2011 | Refrigerators

1 Answer

My 2-door 9cu.ft. refrigerator suddenly stopped cooling in the non-freezer part. checked the temperature setting and the electrical supply and they're just fine. freezer's working fine too.


Hi.

The problem can be a defective defrost system. The defrost system comprises defrost thermostat, heater, defrost control and fan. The parts that fail more commonly are thermostat and heater. Both parts are located behind freezer firewall and tested reading impedance with a multimeter.

A test on the defrost system can be done by performing a complete defrost manually (remove food and leave power disconnected overnight). If the fridge restarts working after defrost, then problem was the defrost system. In that case the problem may return after few days or weeks, meaning that one part in the defrost system is faulty.Parts must be tested.

If the defrost makes no change, then there is a different problem. The damper ventilation system , the temperature control or the refrigerant gas pressure may be the problem. When the problem is one of these faults you get the compressor is running regularly, but will stay on most of the time.

If the motor is humming and clicking most of the time, but not properly starting, then the problem is usually the starter relay/capacitor. Relay and capacitors can be replaced to fix the problem.


Regards.

Ginko

Jul 18, 2011 | Samsung Refrigerators

1 Answer

Stopped cooling completely, still running


Hi.

If the compressor is starting and running normally try performing a complete defrost. If the fridge restarts working after defrost then it was either damper system, defrost control, or in some case electronic control of temperature.

If the fridge restarts working after defrost and fails again after days or weeks, then you have a defective defrost system.

If the compressor is working all the time and it is none of the above there may be low gas pressure because of a micro leak.

If the compressor does not start check compressor, starter relay or capacitor and depending on the model temperature control.

Try the defrost first. Problems caused by defrost system may result in same symptoms and are quite common.

Regards.

Ginko.

Dec 11, 2010 | KitchenAid 19.7 Cu. Ft. Side-By-Side...

1 Answer

My side-by-side frig-freezer ices-up about once a week and has to be defrosted to work.


Good day,
That is caused by a bad defrost system.
Without the style and model number, the answer can only be generic.
It defrost's automatically using a defrost heater, defrost thermostat, and a defrost control, that might be mechanical, electronic, and on some upgraded systems , by using thermistors and a motherboard.
Use of a VOM meter and knowledge of electrical is necessary to perform diagnostics and perform repairs.

Here is a good tutorial on defrost systems, and how they work.

http://www.appliance411.com/faq/howdefrostworks.shtml

Dec 27, 2009 | GE Refrigerators

1 Answer

Refrigerator not working


Sounds like a possible defrost system failure,there are multiple components in the defrost system that can trigger this symptom(defrost heater,defrost timer,thermostats) if the freezer cannot go through the defrost process the frost will build up on the evaporator restricting air flow, the freezer will seem to work, but early signs will be fresh food section will start to get warm. Good luck!

Nov 26, 2009 | Cars & Trucks

1 Answer

Freezer works fine but frige side not getting cold enough-side by side unit


Check rear wall of freezer to see if you can feel frost about halfway down. If so you likely have a defrost system problem. Three components involved in defrost system, Heater, defrost thermostat and defrost timer or Defrost control (circuit board).

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Aug 22, 2009 | Kenmore Refrigerators

1 Answer

Evaporator Defrost System 53552


this unit does not have a hot gas def system but rather a pulsed def where the heater will kick on for a few minutes every so often to see how frosted up the coil is. the draw back is that they are having problems with the control board keeping the compressor and condensor motor on during the def cycle, thus ending up with a solid ice build up in the coil..

Sep 21, 2007 | Kenmore 53552 / 53554 / 53559

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