Dometic RMDT 8505 - Not getting cold again! (1 Viewer)

[Rob Baldwin]

Hi I'm having a problem with my Dometic RMDT 8505 fridge freezer. Last week we travelled to campsite 1 - no problems Fridge/Freezer switched to 12v whilst travelling, on site plugged in to 240v again no problems. We moved to site 2 and the fridge/freezer worked whilst travelling again but once on site and plugged in to the mains, overnight we noticed the fridge and freezer had stopped cooling. I tried unplugging the mains, switching off, etc but the unit failed to cool. The motorhome was sited level. I switched to gas & the freezer section cooled overnight but the fridge failed to cool. This continued for 2 days, freezer froze but the fridge only seems to cool a small amount even after increasing the thermostat levels to five lights. Returning home and the unit switched to 12v again and both the freezer maintained frozen and the fridge did cool things done at an increased level.

On returning home I have switched the unit off waited 24hrs and doors open, fridge is at ambient temperature

Switched back on again mains voltage - 24 hrs later freezer frozen & fridge very cool temp setting on 4 led’s

Switched off waited 24hrs and doors open, fridge is at ambient temperature.

Repeated these steps switching from mains to gas every 48 hours and all ok until this weekend. The unit was on elec and Sun morning I have a HE1 error code. This is Heating Element number 1 but I have 265ohms & mains voltage when testing? any thoughts??

 

[martinmonty]

most of the problems with these fridges is Outlet flu being blocked up. I had to take my fridge out to clean the flu out some vans you can access from the outside i cleaned the flu and it worked in used some wire wool and wire coat hanger if you are going to do this at the top of the flu is a spiral peice of metal be careful clean up around the gas jet I hope this help

 

[Rob Baldwin]

Cheers Monty - Presently for the whole lot out and turned upside down. I will check flue etc thanks. will report back

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[PhilandMena]

This is a common cause of Fridges not cooling and the solution is very simple. Put a piece of paper underneath the flue and make sure the burner assembly is pushed to the side and covered so the jet remains clean. Get ready for a sh*t load of soot !

 

[martinmonty]

Hi I don't think a good idea to turn the fridge upside down there are gases at the top which make the fridge work take the top of the flu off and clean the soot down be careful of spiral thing quite fragile if a lot of soot cames down it might be the problem best of luck martin

 

[Rob Baldwin]

Thanks removing flue assembly now

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[Lenny HB]

There is only one refrigerant circuit, it's the same pipe with one cooling fin attached to it in the fridge and one in the freezer.
Sounds like the refrigerant is not circulating so either a refrigerant leak or as Martin says burner/ flue problem.

 

[martinmonty]

Hi I would like to know if this fix worked martin

 

[buttons]

Hi and Welcome.....

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