Freeze only compressor continually running. if it is thermostat can i replace it?

Can be 2 things. If its over freezing, its likely the thermostat has jammed closed and continually causing the compressor to keep running. This will make the freezer get too cold and over freeze. If its not icing up and not getting cold, I would say its lost its gas charge. The compressor is continually running, trying to get down to temperature.

Check refrigerator and freezer temperature. If the freezer is above 0 degrees Fahrenheit it is likely the cooling capacity of the unit has reduced due to low charge or weak compressor. What usually happens is that the freezer is not able to reach the proper temperature and the unit runs continuously. The result is that the refrigerator via the freezer-refrigerator air flow connection freezes.

"This is not intuitive", but the logic is that from the compressor running continuously the freezing air that flows into the refrigerator side results in that the refrigerator will freeze,.

Check the temperatures. If the freezer is above 10 degrees F it is almost certianty the cooling capacity has been reduced.

If equipped with an ice maker the output of the ice-maker will also reduce with this problem

It is possible to have the compressor replaced but not usually cost effective.

Hi
Normally a fast freeze button is just that, it turns the compressor on permanently to freeze things down quickly.
I suspect that your run light is linked to the thermostat, and does not indicate that the freezer is turned off but that the temperature of the freezer is above the temperature set on the thermostat and the compressor is running to bring the temperature down. Once the temperature is at or below the thermostat temperature then the compressor will stop and the red light probably goes out, indicating the the freezer is at the right temperature.
It won't go out with the fast freeze on because to freeze food quickly the thermostat is by-passed and the compressor runs continuously.
Hope this helps.

Is it a digital temp. display? Does this show a low temp? It should show +/-34 degrees. Listen if the compressor runs continuously. It should run for a while and then switch off. When you change the temp setting, as you turn it down, the compressor should stop. If it runs continuously then the likely cause is a stuck/faulty thermostat.Before replacing this, switch off and leave open until unit is at room temp. Then switch on again and monitor. If the thermostat if faulty and the compressor runs continuously you can damage it by overheating. The compressor will run for a good few hours after restart, until set temp. is reached and then switch off automatically. Good luck!

Try turning thermostat knob all the way to left or counter clockwise. This should shut the compressor off. If the compressor continues to run the thermostat is stuck closed & bad. If the compressor remains off with thermostat turned all the way to the left try turning it slightly to the right (warmest setting). See if it stops freezing. If it continues to freeze set at warmest setting replace the thermostat. Try pricing a thermostat out at Refrigeration Hardware. Link attached. Refrigeration Hardware Supply

as long as the compressor is running on your freezer the longer the fan runs has to too cool the compressor . . .thermostat problem

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.

dear sir/madam

i think this is thermostat setting problem please make sure freezer,s thermostat nobe (nidle) is in correct position .then see thermostat temperature settings . may be thermostat is not controlling to compressor motor that why it,s running continuously.

hope answer the question,
thank you
please vote!

Your thermostat is faulty, pure and simple.
If the thermostat fails to do it's job, your compressor continues to run thus freezing your produce.

Try to set the thermostat to higher temperature and monitor if the compressor will turn " off " when the room temp. is cool, and turn " on " when the room temp. is high. If does not work then your thermostat is defective. Continue running of compressor with very cold room temp. can build up ice in the unit. The compressor should shutdown when setting temp. will attain.