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Dometic RM4223 does not want to stay cold

I hav a !998 flagstaff,pop-up camper with a dometic frig.Model # RM4223, refrigerant R717,serial #7330489.product#9211302-04,it's operating on 120vac ,but during the day it is pulling temp. of 50-57degr. installed in folding camper .Did get to 38 degrees over night, on a cool night plugged into 120vac in the garage.however it did not maintain temp the next day,as the day heated up .IT is not work on 12vdc n is not hooked up to 12vdc,and also could not get propane to lite. I dont think any propane was getting through. I.removed a tube,between gas inlet tube and a sort of gas control valve in back of unit,and found a small,white, filter like material inside this tube .Is That stuff suppose to be there and why?It seems to get cold during the evening, but starts to warms up as the day gets hotter.Does it cool according to the temperature outside?Do both the 120vac switch and 12vdc switch hav to be on when operating on 120vac? Does it alwys hav to be hooked up to 12vdc, if so why?Where can i get a manual and a diagram for this unit? I'd appreciate any help thank you john

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Posted on Jan 02, 2017

  • 51 Answers

SOURCE: Dometic fridge

I would look for a ventilation problem. If the fridge is working at that level nothing wrong with electric. The unit needs air to move up and out the top to make the freezer work. It sounds like the air is only moving the wrong way out the lower vent. Careful it could just be a birds nest but it may be a large wasp nest blocking the roof opening.

Posted on Sep 07, 2008

  • 68 Answers

SOURCE: Dometic rm4223 wont run at all

Make sure you have 12 volt DC power to circuit board. If you do you need a circuit board.

Posted on Mar 19, 2009

  • 9 Answers

SOURCE: dometic rm4223 has leaked coolant. The

You need a new cooling unit. That ammonia smell means that your heating unit is shot, needs to be replaced, and there are a coupla ways to go here.

1) Order up a rebuilt (or new) online, and replace it yourself. (Handyman skill level:fair.) $500.

2) Go to an RV repair shop and have that done $700.00 - $100.00

3) Buy a new fridge. $1000.00 ++

Posted on Jul 26, 2009

  • 47 Answers

SOURCE: warm temps cause cupboard shelf above refrigerator to heat up

well thats normal mate you cannot prevent this ... perhaps try draging your fridge away from the wall so it sits about 100mm off the wall

Posted on Nov 11, 2009

  • 1031 Answers

SOURCE: dometic rm2852 fridge nor freezer works. light

How old is the unit?

Posted on Jan 29, 2010

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