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Question

Samsung Refrigerator help please!

Oct 9, 2018 11:03AM PDT

MODEL: RB1855SW

So, months ago I started noticing that the fridge is getting warm. It got to the point that it was at 15C, so I opened up the back of the inside of the fridge, and the metal "coil" is full of ice. I unplugged the fridge, used a hair dryer to get the ice off (lots of ice), dried it, and plugged it back in. Sure enough, the fridge was back to normal, and it stayed that way for a full 2 weeks.

After this, it starts getting warm again, first a couple degrees in a day, then really quickly.

I called a tech and he came three times, replaced the temp sensor, but that's it, he couldn't figure it out.

So now I'm defrosting the back metal plate every 2 weeks.

Could it be the temp sensor and the second one I got is also bad? The only other thing I saw that is probable is the evaporator fan?

Any help would be hugely appreciated.

The freezer is always fine, at -18C and doesn't fluctuate. I keep the fridge at 4C but like I said, this goes up quite a bit after the back freezes over.

Thank you in advance, I'll try anything.

Discussion is locked

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Answer
Sounds like de-icer issues.
Oct 9, 2018 11:27AM PDT
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my fridge
Oct 10, 2018 9:54AM PDT

So, does that also apply to my fridge? It's a top freezer model, like most fridges now. Before I go crazy on the fridge, the other two solutions are definite no-nos? The temp sensor (or other sensors ,the easy solution) or evaporator fan?

Any other ideas before I take this thing apart?

I just defrosted it again today, the temp was in the 16C range, it's down to 4C again, good for 2 weeks, so I probably will not go rummaging around until then.

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Yes.
Oct 10, 2018 10:03AM PDT

Even "top" freezer models use the deicer cycle method. Remember I'm just a physics and how things work person.

To get into the nuts and bolts I have to get a service manual. But I rarely go that deep. I limit my work to areas that I can get parts for from the usual amazon or such outlets. I've fixed our ice maker recently and I was in luck that it was electrical which is my area of expertise. It was just a failed connector. It wasn't too bad so I cleaned the connections and it's working again. But I know it will corrode over time since they put it into the area where the ice is made without a solid seal.

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physics :)
Oct 10, 2018 12:28PM PDT

Well, I'm an astrophysicist (well, this account is my dads, I'm trying to figure out the fridge for the family) and I gotta tell you it's not helping, lol!

But after some more research I have come to the conclusion that it is definitely either the metal defrost coil, or the heater that is responsible for heating and defrosting the coil itself, so I'll have to take it apart in a couple weeks, check the parts and how they are put together, get the part numbers, and try that.

If anyone has any other ideas or thinks this is not it, let me know.

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Or...
Oct 10, 2018 1:04PM PDT