Dometic fridge

Submitted: Monday, Jun 08, 2009 at 23:55
ThreadID: 69639 Views:1970 Replies:3 FollowUps:6
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Hi all, We are having problems with our dometic rm2350 caravan fridge, the heaters are working and we have warm air venting out the back but the interior isnt cooling. Any help or ideas would be greatly appreciated
Thanks Humie
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Reply By: Roughasguts - Tuesday, Jun 09, 2009 at 00:16

Tuesday, Jun 09, 2009 at 00:16
How long has it been running for? mine seems to take several hours before the temp drops on the 240 volt setting. It sometimes even gets warmer for a while.
AnswerID: 369049

Follow Up By: humie - Tuesday, Jun 09, 2009 at 00:56

Tuesday, Jun 09, 2009 at 00:56
Had it running on 240 for 2 days also on gas for 2
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FollowupID: 636537

Reply By: Roughasguts - Tuesday, Jun 09, 2009 at 01:03

Tuesday, Jun 09, 2009 at 01:03
Hmmm wel it's been running long enough.

Is the fridge level ? pretty level is sometimes not good enough

The first thing I would sugest is take the back of the fridge and get to it with a brush and do some cleaning on any dust build up on the condensor.

I have never needed to try this but if that fails I beleive if you remove the fridge and turn it up side down this can help with the gas or the amonia and get it moving again.
AnswerID: 369050

Reply By: ozwasp - Tuesday, Jun 09, 2009 at 01:13

Tuesday, Jun 09, 2009 at 01:13
It may need the solution mixed up - turning upside down for a minute sometimes will help

I've also heard that 3 way fridges can get blockages inside them which prevent the solution circulating
AnswerID: 369052

Follow Up By: Member No 1- Tuesday, Jun 09, 2009 at 07:53

Tuesday, Jun 09, 2009 at 07:53
its called "crystalisation"
the water boils out of the solution leaving only the "salt" crystals which blocks the piping. Turning upside down, on thier sides etc. is hoping to get the solution back in contact with the crystals thereby dissolving them.

1st Make sure the stack is clean....get a tube brush and clean it.

absorption frigdes run on a vacuum...fairly low something like 28/29 inches if I recall so any small leak lets in air stopping the refrigeration cycle.
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Follow Up By: ozwasp - Tuesday, Jun 09, 2009 at 10:21

Tuesday, Jun 09, 2009 at 10:21
I'm not quite sure what you mean by a vacuum of 28/29 inches?
I was under the impression the refrigeration system was under pressure, due to the ammonia and hydrogen in solution. I would appreciate if you could tell me more, as I find 3 way fridges quite fascinating.
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FollowupID: 636552

Follow Up By: Member No 1- Tuesday, Jun 09, 2009 at 11:23

Tuesday, Jun 09, 2009 at 11:23
duh!...you are right ..i was thinking those that work with lithium bromide...they work on a deep vacuum
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FollowupID: 636554

Follow Up By: kend88 - Tuesday, Jun 09, 2009 at 16:10

Tuesday, Jun 09, 2009 at 16:10
I had exactly the same problem with my 2350 last month. Hadn't used it for 6 months or more. There was plenty of warmth at the pipes at the back but wouldn't cool the fridge on gas, 240 or 12v.
Someone suggested turning it upside down. Didn't have the time or inclination to do that , but jumped up and down on the caravan a'frame for 10 minutes to see if I could clear a blockage if there was one. Don't know if it was coincidence, but the fridge was really cold next morning. I guess taking it for a drive on a relatively rough road would be similar.
KenD
Bris
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FollowupID: 636593

Follow Up By: oldtrack123 - Tuesday, Jun 09, 2009 at 22:44

Tuesday, Jun 09, 2009 at 22:44
Hi
Can You detect any ammonia smell inside ot at the back of fridge, any such smell no matter how faint means you have a refrigerant gas leak . big problem , means new or reconditioned unit.
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FollowupID: 636684

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