ADVICE NEEDED - Dometic RM7655L Freezer cold fridge warm (12 Viewers)

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Aug 9, 2023
123
108
Leeds, UK
Funster No
97,990
MH
Burstner T-Star
Hi

As per above title, I’m struggling to find the cause of why our fridge doesn’t cool as it should OR I’m I asking to much?

the Motorhome was bought 3 months ago (2005 Burstner) and while away in warm (ish) weather (around 25 degrees) we noticed the fridge wasn’t cooling. The temperature inside the fridge was around 17 degrees.

THE FREEZER however was reading -6 degrees 🤔🤔🤷‍♂️

So we took it back to the dealers we bought it from only to be told they had run some tests and didn’t find anything wrong with it.

Their test showed:
-Run the fridge on both, 240 and gas and recorded readings. After 4-6 hours of operation their readings showed fridge temperature was around 5-7 degrees (note this completely empty fridge) on both fuels.

So we went and collected the Motorhome back got back home and started doing some tests - note the weather now is a lot cooler compared to when we found it was reading around 18 degrees back in the warm summer week we had 😁😁


Anyway plug on 240 first let it run for around 8 hours internal temperature was 9 degree


Switch it off for the night the next day switch it on gas after approx 7 hours it was reading 7 degrees (empty fridge)


NOTE the freezer was reading -19 degrees


I since did a bit of research and came across few posts here about replacing the thermal paste behind the metal fins so… great I thought order some GD900 from Amazon and got on with the job


Taken the fins out and found the old paste (grey colour ) was all very dry scrap it all out and clean the back of the fins, then went to clean the black condenser pipe and applied 2 x30g tubes of the GD900. Fitted everything back and spend the last 2 days restrung it all again only to find - very little to no difference 🥲🥲🥲

Could anyone more experienced then me suggest any other possible causes/fixes ??

Is the black condenser pipe that runs behind the fins the same for both fridge & freezer ?

I find very strange that the freezer cools down to -19 and the fridge struggles ?

Is 7/9 degrees normal for this fridge (empty)?

Any suggestions will be greatly appreciated

Thanks
 
May 31, 2015
12,541
52,208
Cornwall
Funster No
36,638
MH
Ducato PVC
Exp
Getting Better
These fridges seem to work best on 2-3 setting, if you turn it up to 4-6 it gets hotter, I know that don’t makes sense but it does seem to work,

What setting are you on….🤔
 
OP
OP
I
Aug 9, 2023
123
108
Leeds, UK
Funster No
97,990
MH
Burstner T-Star
These fridges seem to work best on 2-3 setting, if you turn it up to 4-6 it gets hotter, I know that don’t makes sense but it does seem to work,

What setting are you on….🤔
I’ve tried on pall 4 levels, none seem to get it any cooler 😞

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