Fridge not cooling (17.6*) freezer -2.1 (1 Viewer)

[ItaMotorhomer]

Hi

Out 3 way fridge is not cooling as it should

Fridge been on for over 24 hours and internal temperature 17.6 degrees

Freezer - 2.1 degrees

This when set on max

What could the cause be?

What should both (fridge & freezer) temperatures when set on max (colder)?

Thanks

 

[Clivefog]

On EHU? Tried it on gas?
Try turning it down a bit sometimes helps.

 

[ItaMotorhomer]

On EHU? Tried it on gas?
Try turning it down a bit sometimes helps.

Hi

Yes tried on both gas & EHU with same results

Also tried to lower the temperature but nothing fridge still doesn’t cool

 

[Clivefog]

Sometimes the cooling fins need refixing, never done it so don't know other than have a search on here. Best of luck

 

[GeoffnDee]

Which make and model is the fridge ?

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[Figaro]

Try replacing the thermal transfer paste on the back of the aluminum fin plate at the rear of the fridge, it'll make a massive difference and easy to do.
Lots of diy tips on here if you do a search

 

[Freo]

Dunno if it helps but I have twice had an issue with mine. Both times in hot weather.
On both occasions, it had been working fine then, for no apparent reason, it slowly stopped cooling. From memory, this took 2 or 3 days to become evident.
I sussed it out the 2nd time it happened. The van was not level enough.
I felt that it wasn’t too far off the level. I’m convinced that my previous van would have been fine, however, this van seems more sensitive to level.
Anyways it’s an easy enough thing to check for in the first instance.

 

[ItaMotorhomer]

Which make and model is the fridge ?

See photos as I think it’s better then me trying to explain

 

[suavecarve]

Hi

Yes tried on both gas & EHU with same results

Also tried to lower the temperature but nothing fridge still doesn’t cool

How long did you try it on 240 and how long on gas ?
How old is the fridge/motorhome presuming they are the same age

 

[GeoffnDee]

The photo shows it is a Dometic model RM7655L (dis-continued 2005) , If the fridge is near level (less than 3 degrees tilt) with both doors closed ok and the lack of cooling is the same when on either gas or EHU , as suggested , the thermal paste may need replacing , the fridge could also have a faulty temp. sensor or Power module.

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[ItaMotorhomer]

How long did you try it on 240 and how long on gas ?
How old is the fridge/motorhome presuming they are the same age

Had it all night on 240 and then petty much all day on gas. The freezer was around -2.5 and the fridge fluctuated between 15 & 17.5 degrees.

 

[ItaMotorhomer]

The photo shows it is a Dometic model RM7655L (dis-continued 2005) , If the fridge is near level (less than 3 degrees tilt) with both doors closed ok and the lack of cooling is the same when on either gas or EHU , as suggested , the thermal paste may need replacing , the fridge could also have a faulty temp. sensor or Power module.

Thanks for the suggestion, I think I’ll get someone who knows what it’s doing to have a look at it and take it from there . What should TGE temperatures of both fridge & freezer be when working good?

 

[Spriddler]

What should TGE temperatures of both fridge & freezer be when working good?

 

[rosalan]

A couple of simple fixes. Of the 5 levels of temperature, use 3 not 5 as a rule.
As already said, thermal mastic is most likely the problem. Before slightly more drastic action try to tighten the 7+screws holding the fins on. Behind the fins is the frozen metal pipe feeding the freezer. It has a thin layer of thermal mastic that sends cold to the fridge. If this mastic breaks down or in any way does not make good contact with the fins you will not have a cold fridge. If you can tighten the screws a tiny bit, this should make better contact with the cold pipe.Otherwise undo the screws take of the fins slowly to pull them off the mastic. Clean everything and replace a very thin layer of mastic where the two surfaces touch and replace. Easier to do than talk about.