I have a True GDM -23 single door frig. Here is what I know:
The compressor is working
Of the 2 lines that enter into the top coil (inside the box) the small one is getting very cold even a bit frosty. But the insulation is off in this area so im not sure that is an issue?
The fan inside the box works
Th fan below works
I have bypassed the temp control valve inside the box by linking the 2 wires that go into the back. I did this to see if it was the temp control. It did nothing to make the box cool.
Today I removed the defrost timer? Round switch about the size of a quarter in diameter and bridged these wires.
It is currently running now and I am keeping an eye on it, the compressor is ON and everything is running as it should be.
I bypassed the defrost timer thinking if this is bad it should cool right? Well Im clearly NO A/C guy so Im hoping you may suggest something else. I have a multi meeter and I am quite handy so If you could suggest systematically checking other items that would be great.
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If you cant get the control warm enough there are a couple of possibilities. First:You recently had gas put in the system and the system wasn't fully evacuated and a new charge weighed in. The sensor is clamped to a specific spot on the coil suction line and It is not sensing the cooling so it will run and run and run. You will need to recharge the system and the balance will be restored. The second reason is the system is losing its charge and again the temperature control is not being satisfied. You will need to find the leak, repair it and recharge the system. Temperature controls are pretty simple, are calibrated at the factory and unless abused, pretty much last the lifetime of the box. It would be easier to replace it than calibrate it. Hope this helps and good luck.
Dirty or greasy condenser, cooling coil iced up, compressor failing, dirty cooling coils or blocked with paper or wrap, low on gas from a system leak, above or below operating temperatures in the area surrounding the refrigerator, condenser fan motor failed, one of the doors was left open, bad wall plug, failed thermometer, or a combination of any of the above. Hope this helps good luck.
By not hearing anything but the fans I would have to say the compressor is not running. Pull the cover off so you can access the condenser area where the coil and compressor are located. Check the coil and ad make sure it is clean. Then feel the compressor and find out if the compressor is hot. If it is hot and the coil is dirty/dusty I would say it was going off on high head pressure/temperature. Clean the coil and let the unit sit off for a while and then try running it. If it is cool then it may have an issue with the refrigerant or other things like maybe start componenets.
My Gdm 12 was doing the very same thing. Remove the from grill plate by taking out the 4 screws below the door. This will expose the compressor mounting plate . While the compressor is running, and is at its loudest, loosen or tighten the two front hold down bolts until the noise goes away. Most likely, when you cooler was moved or transported off the shipping pallet, it was bent slightly allowing contact between the bottom of the compressor, and the mounting plate. Hope this helps.
The door bulb is a standard , I believe 32" t-12 newer units may be t-8, common bulb in stores. I've got an older gdm 23 and the bulb on top is a curved one , harder to find. Also these lights have ballasts that power them, they also can fail
sounds like the compressor is not running. The condenser fans are located at the compressor. The fans in the conditioned space are the evap fans. A refrig usually does not have any device controlling the evap fans, they are to run 24/7. Freezers have other controls. Start there and let me know if I can help further.
What do you mean the compressor was cleaned. It sounds to me you need to clean out the condenser coil. free it from all dust and debris. + Does the compressor work and what gas is in the system, does the condenser fan work. I'm assuming that when you say the fan works, it is the evaporator fan inside the cabinet working. You will have access the condenser fan either from the front or rear of the unit. The condenser unit is normally extracted from the rear. it should slide out but take care not to kink any of the pipework.