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Not an expert opinion but seems that either you have low refrigerant and maybe the compressor is not therefore starting or the compressor has an issue, or the power to the compressor is missing.
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motor humming is from 2 things
start / run capacitor is failed
compressor is seized and the motor is not turning
call in an technician for a proper diagnosis and quote
Possibly the temperature sensor is faulty(out of spec.) and it will cause that problem or the display unit is faulty. Suggest you replace both if you decide to replace the display.
Does the compressor start when you plug it in and turn on ??(do not get mistaken for the internal fan unit noise if it has one) if so, I would be fairly certain the gas has discharged from the unit and is not financially viable to repair, if the compressor does not start, check the defrost timer (usually located near the compressor in the well housing lower rear of the unit, some have them located on the thermostat housing inside the unit, it will have a small dial located in it, look hard for this item, use a screwdriver and turn this dial clockwise, it the unit awakens, replace the timer. The thermostat may have issues as well, do not attempt to pull this apart, it is dangerous and should only be done by qualified tradespersons.
Hope that helps and the unit awakens and gives you many years of trouble free operation.
Is the compressor continually running? If so then there could be a leak in the system or the compressor is damaged. If it's running then stopping, the cold control (thermostat) could be damaged.
Hi, The defrost heater may not be working properly (timer stuck, heating element burned out, bad defrost thermostat,etc.). The unit should go into defrost mode about every 6-8 hours typically and last about 30 minutes (depending on model of freezer). During defrost cycles the compressor and fan do not run (don't want to keep cooling while trying to defrost). Once defrost is over, the fan and compressor get power again. Take care
First, check the compressor fan. Make sure it is turning. If this fan is not working properly, the refrigerant will be be cooled adequately. This lowers the efficiency of the refrigerator and causes it to run more.
The fan is probably located in the back of the bottom of the refrigerator. It pulls air across the coils and blows the heat out the back of the unit.
If the fan is not turning, the fan motor will need to be replaced.
I would replace the thermostat because is the only thing that controls the temp. , also there's a timer and a terminator but them are only for defrosting the unit.
on the compressor there is a device called a thermal overload its the box that plugs on the compressor it might be bad if you have a wire with two aligator clips on it you can jump the terminals on the thermostat as it may be bad if you do that and it starts then the thermostat is bad if this is a self defrost unit then find the defrost timer and turn it slowely clockwise if it starts then the timer is bad
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