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My GDM-68 cooler does not shut off even when thermostat is turned off. The unit freezes until fans hit ice. Can you help me?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 400 Answers

SOURCE: I have a true GDM-12FC floral cooler that the

You have not said if the cooler is cooling to the correct temperature or achieving the setpoint. Make sure that the correct thermostat has been supplied. Also that the sensor has been installed in the correct location. If all of the above is correct, then I would have the refrigerant level checked.

Posted on Mar 09, 2009

  • 88 Answers

SOURCE: Tru GDM-47 cooler evaporator icing up.

possible bad defrost timer,or control on an off is bad,were you adjust temperature...thermostat from 30 to 65.00 dollars....possible there is leak or unit is under or overcharged..more than likely under charged...possible defrost heater is not working...good luck..michael doctor airr appl.repair..service tech..843-384-8474...call if need additional help ..its free..

Posted on Mar 27, 2010

duane_wong
  • 6826 Answers

SOURCE: My true cooler gdm-45 is

The thermostat seems to be bad. Or, the defrost timer is staying on too long.

Posted on Jul 12, 2010

heatman101
  • 43501 Answers

SOURCE: I have a True refrigerator

Hi,
You will need to find out why the unit is not shutting down properly....
It may be that the thermostat sensor will need to be placed in a different spot...or the temperature may just need to be raised higher...
Does the thermostat turn off the unit if the temperature is raised??? If so, then place a thermometer in the cooler and then adjust the thermostat to 38F by that thermometer and not by the t-stat calibration, it may be off even if it is new...

If the t-stat is not cycling the unit then you will need to use an electrical meter to trace out the power to the unit and find out why it is not shutting down...

heatman101

Posted on Mar 31, 2011

  • 5370 Answers

SOURCE: I have a GDM 49.

Its a defrost problem, the unit is not defrosting, due to this everything is getting frosted.The cooling cycle is running, so freezer freezes, but defrost cycle is not running so its all getting freezed and remains freezed.---------- -------------

First try manual defrost reset procedure. The procedure is as follows: ----

First unplug the unit from main power outlet. Then empty whole unit completely. Then keep both the doors open. Wait for 24 hours. All the ice collected on the coils and in the freezer section will get melted. Clean the water from the sections. Then Connect the power cord of the unit to main power outlet after 24 hours/.Then set the temperature to normal in both fridge and freezer section. It will take near to 4 hours to get run in its proper cooling cycle. Then check, if the problem returns again. Then its defrost board problem. -------------

If it's again building up ice that means the unit is not defrosting. It's starting the cooling procedure, and then while defrosting, it's not working. The defrost assembly consists of three main parts. The defrost thermostat, the defrost heater and defrost board. Any of the one is not functioning. When thermostat sense the maximum cooling, it triggers the defrost heater to start heating and this defrosts the ice collected on the coils and the system works. Both thermostat and heater are controlled by defrost board. First the thermostat and defrost heater to be checked, if both check ok by meter and visually, then its defrost board causing the problem. But in your case thermostat is all ready replaced, so either is defrost heater or board.But first see if manual defrost is solving the problem or not.If not then def heater or defrost board has to be checked.You can get required parts from from online sites like: --- www.repairclinic.com or from searspartsdirect online site. --------- This should help.Thanks.Helpmech.

Posted on Aug 30, 2011

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