Dometic fridge/freezer

[anns]

Anyone have any ideas what could be the probelm with our dometic fridge/freezer. When on 12volt while driving there is a buzzing noise coming from it. Changed the control panel but no difference does not do it all the time. Fridge works fine on gas and electric

 

[TCG]

Relay ??

 

[anns]

Changed the whole control board still doing it

 

[Spriddler]

.......there is a buzzing noise coming from it.

Can you pin down exactly where/what it's coming from? From the fridge control panel? The back of the fridge? Shelf vibrating?
Maybe remove outside vents and listen to try to locate the noise.

 

[anns]

Coming from control panel at top front of the fridge does not do it all of the time

^{_{Subscribers  do not see these advertisements}}

 

[anns]

This is the noise

 

[ctc]

Door open alarm trying to sound?

 

[anns]

No it only doing it when driving and fridge is on 12 volt setting

 

[GeoffnDee]

Do you know which model the Dometic fridge/freezer is ? (there may be a label inside the fridge)

 

[anns]

Yes model number RM 7651L

^{_{Subscribers  do not see these advertisements}}

 

[mitzimad]

there is a relay on the back of the fridge id take bottom vent of and see if its that

 

[anns]

Will do thanks.

 

[GeoffnDee]

As mitzimad has said there is a relay in the back of that model of fridge that is linked to 12v operation ,

 

[mitzimad]

just hold a finger on it whilst the noise is there youll feel if its that

 

[JohnH17]

Difficult! One thought - does the fridge actually cool on 12v? Though maybe difficult to tell! It certainly sounds like a relay - sounds like a relay that's energising, then shorting the supply to the relay so de-energising, then energising again, etc. So I'd look at the wiring - if it's buzzing try waggling wires/cable looms, see if you can get it to stop/do it. You say 'while driving' so with vibration? Or just with engine running?
Also, found this on forums.motorhomefacts.com from April'11: "My fridge works fine on 240v and gas but has started to "buzz" when on 12v. I know it is not the circuit board located behind the control panel and have now been told that it could be the heating element or the power supply from the alternator." from someone in Peterborough looking for a local fridge service place. The alternator's an interesting thought! But the fact it's intermittent doesn't sound like alternator to me - but again the cable from the alternator could be. Can you get a multimeter on a 20v DC range on the supply to the fridge and see if it's a fairly steady 13v-ish? And you could try replying to their post?! ( Link Removed )
Anyway, good luck, intermittents are the worst!!

^{_{Subscribers  do not see these advertisements}}

 

[KimSteve]

Sounds like a fan catching a grid.

 

[Richard Mason]

Anyone have any ideas what could be the probelm with our dometic fridge/freezer. When on 12volt while driving there is a buzzing noise coming from it. Changed the control panel but no difference does not do it all the time. Fridge works fine on gas and electric

The problem is its a Dometic fridge freezer. absolute rubbish and cost a fortune to replace.

 

[GeoffnDee]

anns Any luck ,so far , in finding the cause of the problem ?

 

[KimSteve]

Sounds like a fan catching a grid.

The problem is its a Dometic fridge freezer. absolute rubbish and cost a fortune to replace.

hope not, just done a like for like replacement of the dimeric out of our 2⁰04 MH.

 

[BOWHOUSE52]

Check all the connections behind the lower grill on the outside mine was doing this about thee years ago tightened loose connection and job done

^{_{Subscribers  do not see these advertisements}}

 

[anns]

Thanks for all the comments got it fixed found the problem it was a shorting terminal at main control box. Our electrician neighbour was able to sort it.Kenmore caravans took the fridge control panel back no probelm. Would highly recommend this company for parts.

 

[Riverbankannie]

Thanks for all the comments got it fixed found the problem it was a shorting terminal at main control box. Our electrician neighbour was able to sort it.Kenmore caravans took the fridge control panel back no probelm. Would highly recommend this company for parts.

That sounds like it could have been nasty, so glad your neighbour was able to help.