Does the temperature swing appear normal.

Hi @woofendog

Once it reaches -23°C the compressor is turned off as it is not necessary to make it any colder. After it has turned off the temp slowly rises and when it reaches -10°C the compressor is turned on again to drive the temp back down again so as to not let any frozen food even begin to thaw.

This is the normal cyclic on/off compressor action of a refrigerator to maintain the temps within the preset upper and lower limits.

The temperature range seems normal. If anything it appears to be running a bit colder and also a bit warmer than it should, but this could be due to discrepancies between thermometers as not all read exactly the same.

Have you checked the temperature using a different thermometer, placed inside the freezer compartment, just to see if the temps shown are different?

According to the service data sheet for the model it should vary between -17°C and -13°C. This may depend on exactly where the temperature control setting is of course as those values are for when it is set at the mid point of the range.

How long it takes to reach -10°C when the compressor is off, depends on factors such as the ambient temperature and how often and for how long each time the refrigerator doors have been opened during this time letting the cold air out (or warmer air in).

You could check to see if the door seals are all OK and not that they may be allowing air to escape from the compartments. Place a piece of paper between the door and the door jamb and then with the door closed normally i.e. no pressure on it by you to keep it closed, try pulling the paper out.

It will come out with a bit of an effort but not easily and it should definitely not fall out by itself. Do this at various places around the door, top, bottom and both sides. Also check that the door alignment is straight and parallel to the cabinet indicating no problems with the door hinges.

Your model has an electro-mechanical defrost timer so the compressor is turned off for 30 minutes after every 10 hours of compressor run time, to allow the auto defrost action to occur. It will take longer than 10 consecutive hours to achieve 10 hours of run time as normally the compressor is not running continually and it also runs less often at night as it isn't needed due to the doors not being opened and cold air lost that often, i.e. warmer air entering more often that needs to be cooled.

During this time the temperature may rise slightly above -10°C but usually it does not get even close to 0°C so again the frozen food should not begin to thaw.

Power outages of a long duration during the day and possibly night, (depends on ambient temp and user activity) e.g. 4-6 hours may be different however, so if possible, avoid opening the doors for as long as possible, if at all, to preserve the temperature inside the compartments.