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My defrosting system Ices up and doesn’t melt down. What could be the problem but then I tested the heaters and thermostat they cdnt pass through continuity test but rather bring up a reading of 433 reading What could that mean Then I also need help finding the timer of a RT31FAREDSA model Samsung double door fridge dual Inverter
Hi @atuhutrire alison OK I finally located your model (sorry about doubting the number) It appears that it is a model for Africa. There don’t seem to be any parts suppliers or any other information e.g. service manuals that I can find online so you may have to contact Samsung, in your location and ask about where to obtain parts and their availability. As I said, one step at a time. If the heater solves the problem all well and good. You can verify the heater before installation by testing it to see what its’ resistance is. If it is what I said then you know at least that the original is faulty. With most refrigerators, they go into auto defrost mode once every 8-11 hours. During this time the compressor and evap fan are turned off and the temp in the freezer is allowed to rise to 0 deg. C to melt any ice which drains away to the evap pan under the refrigerator cabinet . The melting process is sped up by turning on the defrost heater. When the temp reaches 0 deg. C the defrost thermostat operates to end the cycle by signalling the control board to turn off the heater and to restart the compressor and evap fan. This whole process takes about 20-25 minutes and is repeated every 8-11 hours. The timer is part of the control board
