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www.fixya.com/support/p22955-true_gdm_12_refrigerator_commercial Recent True GDM-12 Refrigerator Commercial questions, problems & answers. ...Where is the temp control on the older (14 yrs or so) on GMD-12? True ..
If the new thermostat sensor is secure and where it belongs, it has the wrong charge in the system. That cooler takes a critical charge. The factory charge is in ounces if refrigerant. The system needs to be evacuated completely with a vacuum pump and recharged with an accurate scale that weighs in ounces. That will solve your problem. A refrigeration tech carries the necessary tools that an hvac tech doesn't. Hope this helps and good luck.
Numbered 1-9 - one is the warmest setting, nine is the coldest. For a cooler it should be good on 5 for a freezer 7. If it doesnt work well on those settings the thermostat is usually bad.
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..
The unit has a temperature swing adjustment screw located behind the thermostat plate.If you remove the knob and the face plate you will see it,It can be adjusted there.It may also be the thermostat bulb is going bad or touching something and giving a false signal to the compressor.
turn thermostat all the way to the left to turn it off. restore power and see if it stays on and inside fan is running. Then turn thermostat to rite to turn on compressor. If the power trips when turning thermostat back on, the compressor may be bad. :(
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