Fluctuating refrigerator and freezer temps

Hi @js2318

Seems though it is normal as the refrigerator might be in its auto defrost cycle.

Best that I can find out is that it uses the adaptive defrost method.

This means that the defrost cycle only occurs when it is deemed necessary. The logic on the control board uses such factors as ambient temperature, number of times the doors have been opened and how often and for how long the compressor has been operating to determine when a defrost cycle is necessary, so it could occur once anywhere between 8-30 hours

The defrost cycle usually lasts about 20-25 minutes. During the defrost cycle, the compressor and evaporator fans are both turned off and the defrost heater under the evaporator unit (behind a panel in the freezer compartment) is turned on to melt any ice that has built up on the evaporator unit. The meltwater from the ice drains out through a drain tube to an evaporator pan under the refrigerator compartments (near the compressor) to be evaporated naturally.

At the end of the defrost cycle, the heater is turned off (or is turned off sooner as the temperature near the evaporator is monitored by a defrost bi metal thermostat to prevent damage to the evap unit in case it gets too hot) and the compressor and evaporator fan are both turned on again to drive the temps back down again to their set operating temperatures.

Of concern is the fogged up shelves. This could be an indication that warmer outside humid air is entering the compartment when it shouldn't be and starting to condense.

Try placing a turned on flashlight inside the refrigerator compartment and with the door closed normally i.e. no pressure on it by you to keep it closed, check if you can see any light escaping through the door seals. Check all around the door, top, bottom and both sides. Probably best done at night when it is dark as it will be easier to see if there is any light shining through.

If there is check the door seals (aka gasket) to make sure it's OK. Also check the door alignment to make sure that it is straight and parallel to the cabinet in case of a hinge problem not allowing the door to close correctly.

Here's the parts list that is useful if ever you need replacement parts. Locate the wanted part in the list and note the part number that is shown for the part. Search online for the part number only to find suppliers that suit you best.

If you search on YouTube for (insert wanted part number) replacement, sometimes if you're lucky you'll find videos that show how to replace the part.