I have a bush chest freezer CF-143GB. Recently the compressor runs continually. It can be stopped by turning the thermostat right down. A little while later and having reset the temp control it restar

The compressor won't burn out just because it's running all the time. The plastic fascia pops out easily from behind(take the little panel off on the side) Set the thermostat to the middle of its range and switch the fast freeze off.

Check you tube just go to you tube and type in what the freezer is doing .I've found a lot of things on there .

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 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.

Feel compressor to see if running and warm. If not, most likely thermostat control is bad. If it is running, determine if it runs continuously or if it's clicking on and off every couple minutes. If clicking on and off, replace overload and relay that plugs into side of compressor. If running continuously, there is probably a freon leak on blockage. Replace freezer in latter scenario

Hello,

A freezer is great for storing additional food that may not fit in your fridge freezer. If your freezer stops working, it's important to be able to troubleshoot it quickly so that food waste is kept to a minimum. Keep the following tips in mind if your freezer stops working.

Inspect the Relay
The relay is a component that helps power the compressor. It is housed in a plastic box with the motor terminals and the overload protector and is connected to the Compressor; the relay is the largest component in the box. Closely inspect the relay and make sure it is not burned out. The relay can also be tested using a multimeter. If you see any signs that the relay has shorted out, you'll will need to replace it. If the relay makes a rattling sound when shaken, this is also a sign that it has shorted out.
Examine the Compressor
The compressor is essential to the performance of your chest freezer. It is the motor that powers the entire cooling system and if your freezer has ceased to work, you need to check it. This unit is located at the back of the freezer and sits in plastic housing; it can be identified by its football shape.
You can tell that the compressor is broken if your relay is fine or if you hear a light hum followed by a clicking sound and silence. If your freezer is relatively new, it might still be under warranty and you could get a replacement compressor for free. If not, your compressor will need to be replaced by a professional.
Investigate the Thermostat
The fact that your chest freezer is not working could be down to the thermostat. This is the unit that regulates the temperature inside the freezer. To test your thermostat, remove the access panel on the side of the freezer. Next, use a screwdriver to remove the actual thermostat from the inside wall but do not disconnect the tube that runs from the unit into the freezer.
Set the range scale on Rx1 on your multimeter to test for continuity. If your multi-tester reads continuity, your freezer problem lies in another spot. If your multi-tester does not read continuity, it means your thermostat is not working and you will need to replace it. Remove the tube from the old thermostat and attach it to the new one. Screw the new unit into place on the freezer wall and make sure the tube is not coiled or kinked as this will prevent the new thermostat from working properly.


Hope this helps......

the thermostat may not be turning on the compressor.
Do you hear a buzz and or clicking every few minutes when plugged in? If so the compressor is trying to start indicating a problem with the compressor. you could check the windings for continuity or a short and then try a 3-in-1 start kit.

compressor is running overloaded possible problems bad relay/overload /capacitor dirty or clogged condensers if the unit uses a condenser fan suspect a bad fan. and defective thermostats are notorious for short cycling. id check the coils first and if dirty clean up maybe that can be the major problem.

Make sure everything is working, I.E. compressor, fans. Now I need to know if the freezer shuts off at 14 degrees, or does it continue to run without making temp. If it shuts off, then the first place to look is the thermostat. It may be out of calibration. If it continues to run, then the solution may be as simple as cleaning the condenser coil. or the defrost has malfunctioned somehow. Defrost probleams will cause excess ice on the inside coil. You may need to remove the panels to see how much ice is on it. It sounds like the compressor is good, as it is pretty cold. Just not cold enough. A deep freeze should be at least 0.

Unfortunately this sounds pretty surely like you need to get your freezer checked for leaks and re-gassed; control on refrigerants these days makes it very difficult and probably illegal to try and do this yourself, but any refrigeration repair guy should be able to do the job. slight worry is that the compressor could have seized, but this is not so often the case, sometimes a sharp whack can unjam a compressor, but get the fridge guy to look at it if he does the gas. Hope this helps :)