I have a Samsung RS21. Luckily it’s still in the 2 year warranty, but so far the engineer contracting to GB Domestic via Samsung has been out to it four times.
1. To cut back the insulation around fan
2. To find his first repair didn’t work
3. To replace the evaporator cover & sensors
4. To find the replacement didn’t work
He will be back soon (typicaly 1 monh after diagnosis) to replace the evaporator cover again.
Last he left he set a pushbutton code that set a defrost on the fridge only, any idea what that was? It looked like push & hold power feeze& fridge temp then the unit beeped every 5 seconds til we cycled the power 2 hours later as told. This has temporarily cured the problem, but, the fan chatter is back, the water is frozen & the fridge has the top warm bottom cold tell tale. It would be good to get this code as I could affect the same to keep me going till he gets back.