M3 turbo air freezer. M3F24-1 temp on display is not temp of box

Question edited for greater clarity.
Question moved from 'Power Computers' to Freezers.

Disconnect the mains power for 5 minutes to reset the control board. If that doesn't fix it, call for service.

The freezer temp can be controlled with air supply setting, the box would have two compressors in order to get control temp different, in a regular refrigerator is not possible only some commercial boxes have two different condenser units, if the box is shutting down or maintaining 36 the system is ok., compressor stop at 36 in the fridge, -20 in the freezer section is the best.

Thermostat. An incorrectly adjusted thermostat can cause the freezer's compressor to start and kick off. ... The inside temperature of the freezer determines when the thermostat sends the signal to power the compressor. Set the thermostat to a lower setting to see if the compressor starts and then stays on.

If it is a freezer, it should reach at least 0 degrees before turning off. I sounds like a thermostat issue. I would look at that first since it is set on it's highest setting and not shutting down.
Thanks

If everything else is in proper working order, either a refrigerant level issue or and expansion device issue. If system constantly runs the previous, if not, possible temperature control. Look for system cycling or not cycling.

check the fan blade to make sure it is tight on shaft. also check to see if any of the fins are bent could be that they are hitting the housing of the fan motor.

The compressor runs during defrost to supply hot gas to the inside coil

these freezer are designed to run about 70 percent of the time the temp displayed can vary by +/- 3 degrees..make sure you have fan operation in the freezer and the air flow is not blocked or restricted. also make sure that the door is sealing properly

When the temp gets back down to running temp the vacuum will return if the gaskets are properly installed.

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