Dometic 3 way fridge not working on gas.

D

Duffy2025

Joined
Jun 20, 2025
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Swift
Hello all. We have a new Swift Voyager and have taken it on two test trips in the UK and tried everything, it all worked. Now we are in Holland and the fridge will not run on gas. Local Dometic dealers say they are too busy to look at it. Gas is on and LPG tank full. There is no clicking of the igniter. Any suggestions? I can't tell you the model of fridge as no markings or labels on it.

Thanks
David
 
Look inside the fridge, possibly hidden by the bottom drawer or, if you have a removal ice box behind there, for the model number failing that post a photo.
New van, or new to you?
Have you checked your fuses, use a multimeter if you have one, as broken ones are not always visible to the eye.
Mihgt sound daft but do you have the control panel switched on? We have an 'auxilliary' button on ours, if that is not on nothing works. Hopefully someone more knowledgeable than me will come on. It was a fuse when ours failed.
 
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Is the motorhome level or close to it? Some fridges can be temperamental about being level(ish) ....
 
scotzsue said:
Look inside the fridge, possibly hidden by the bottom drawer or, if you have a removal ice box behind there, for the model number failing that post a photo.
New van, or new to you?
Have you checked your fuses, use a multimeter if you have one, as broken ones are not always visible to the eye.
Mihgt sound daft but do you have the control panel switched on? We have an 'auxilliary' button on ours, if that is not on nothing works. Hopefully someone more knowledgeable than me will come on. It was a fuse when ours failed.
Click to expand...
We went mad and bought a brand new one.

Tested the fuses in the Sargent, all ok.



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From your photo its working on ehu then?
Have you tried to press the gas control .on? Or just relying on the auto switch function?

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mitzimad said:
first stop is check the burner cup isnt full of debris that will stop it sparking
Click to expand...
I have had the outside vent off and all looks good though I don't know what I am looking at. Hopefully not full of debris as only used it on gas for three days.
GeoffnDee said:
It seems to be set to run on mains (240v) at the moment what happens when it is set to gas operation?
Click to expand...
It is set to mains but struggles to keep cold in this warm weather. Setting to gas gives beeps, a flashing blue gas light and a solid blue under the warning triangle. Beeps stop after a minute or so but error does not go away and the gas doesn't light. No ticking noise from the lighter and no sound of gas.

All fuses checked, found two behind the lower air vent and one inside the control box.

Also found some wires not connected, seem to be for a fan which I don't have and an RJ11 socket on the end of a cable, presumably for diagnostics.



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There is an inspection eyelet behind the lower vent. Can you confirm, that when you are on gas there is or isn't a blue flame.
If there isn't, do other appliances (cooker) get gas ? If they do, see if there is a reset button (someone will know where and I think it is quite well hidden) and I think you have to press that for 5 seconds
If there is a flame leave it on for 12 hours at least (turning it down to level 2) and then see if it has got colder.
If it doesn't get cold after 12 hours of gas flame then you have a baffle issue
 
If the other appliances are working on gas ok , is it possible that the gas supply tap to the fridge is / has been turned off ? it can sometimes be found on a manifold , with others under the cooker/sink area.
If the gas supply is ok it could be worth checking the electrical connections on the gas supply valve , near the burner.
A reset may also be worth trying , press and hold the on/off button for 2 x seconds.

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Last edited:
suavecarve said:
There is an inspection eyelet behind the lower vent. Can you confirm, that when you are on gas there is or isn't a blue flame.
If there isn't, do other appliances (cooker) get gas ? If they do, see if there is a reset button (someone will know where and I think it is quite well hidden) and I think you have to press that for 5 seconds
If there is a flame leave it on for 12 hours at least (turning it down to level 2) and then see if it has got colder.
If it doesn't get cold after 12 hours of gas flame then you have a baffle issue
Click to expand...
Everything else gets gas, I have had the side off the burner and there is no flame and no ticking from the lighter.

It worked ok a couple of weeks ago when were off grid testing everything.
 
GeoffnDee said:
If the other appliances are working on gas ok , is it possible that the gas supply tap to the fridge is / has been turned off ? it can sometimes be found on a manifold , with others under the cooker/sink area.
If the gas supply is ok it could be worth checking the electrical connections on the gas supply valve , near the burner.
A reset may also be worth trying , press and hold the on/off button for 2 x seconds.
Click to expand...
Blue valve under the sink, yes it is on. I have reset everything.

Will check the electrical connection to gas valve later, I don't know if they should be the full 12v or not.

In the photo, is the bent wire the lighter or thermocouple?
Thanks for your help everyone.

David
 
Some further info, looking at what has changed since a couple of weeks ago. New Safefill LPG cylinder and new thumb turn gas tail. Just tested the Truma hot water on gas and it works fine and is by far the largest burner.

Loosened the gas connection on the fridge burner and it seems there is plenty of gas there.

Three wires to the gas solenoid, lilac, white and black. Guess one is for the igniter. If the 90 degree wire above the burner is the thermocouple the wire goes direct back to the control box.
 
You said ignighter is not working so it could be a problem with the electronics.
We have a 10.4 can be a right pain if it decides there is a fault it's a right pain to reset with those stupid touch switches.

I would try disconnecting power to the fridge control, it will probably a 2 or 3 amp fuse, with any luck it will reset.
 
The power at the gas valve will be lower than 12v . The igniter is the wire probe you are seeing in the burner section which may also have a black ground return wire connection on it to check , if a reset using the on/off button (as in the manual) has not worked ,the suggestion that Lenny HB has made could work and you could pull the fridge supply fuses at the Sargent unit to try this.

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Is there a button on the pipework around the cylinders, if so try pressing them in, they may be stuck, restricting the flow of gas. We had an issue recently where we definitely had gas but the fridge wouldn't work but everything else did. I went and refilled LPG and the fridge then came on, I assume the pressure was not enough as it was probably down to its last bit of gas (though I always thought it was at the same pressure irrespective of the amount of gas ...)
 
GeoffnDee said:
The power at the gas valve will be lower than 12v . The igniter is the wire probe you are seeing in the burner section which may also have a black ground return wire connection on it to check , if a reset using the on/off button (as in the manual) has not worked ,the suggestion that Lenny HB has made could work and you could pull the fridge supply fuses at the Sargent unit to try this.
Click to expand...
Interestingly it now seems to be working. I have had all the fuses out, done power on and off as in the manual but it was the reset procedure I found on you tube that seems to have fixed it. When showing the error hold down the power switch for two seconds until it beeps once. Let go otherwise it will power off which doesn't fix it. After this procedure it lit at the first attempt. I will run on gas overnight so fingers crossed.

Thanks for all the suggestions

David
 
Sorry didn’t see this before because we had same issue with same frite two weeks ago, reset worked for us so hopefully now good for you
 
Duffy2025 said:
Hello all. We have a new Swift Voyager and have taken it on two test trips in the UK and tried everything, it all worked. Now we are in Holland and the fridge will not run on gas. Local Dometic dealers say they are too busy to look at it. Gas is on and LPG tank full. There is no clicking of the igniter. Any suggestions? I can't tell you the model of fridge as no markings or labels on it.

Thanks
David
Click to expand...
I have just had the same problem,,on mine it was 2 things the front PCB board £333 and the gas burner £86 Did it myself so no additional cost.
 
On my Dometic fridge the ignition spark is powered by a AAA battery located in the push button on the front panel
If the battery is flat you will not get a spark

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Duffy2025 said:
Interestingly it now seems to be working. I have had all the fuses out, done power on and off as in the manual but it was the reset procedure I found on you tube that seems to have fixed it. When showing the error hold down the power switch for two seconds until it beeps once. Let go otherwise it will power off which doesn't fix it. After this procedure it lit at the first attempt. I will run on gas overnight so fingers crossed.

Thanks for all the suggestions

David
Click to expand...
All good this morning so have reverted to mains for today. Moving on tomorrow after a great few days at Landwinkel Oude Stoof in Zeeland NL.
 
Clive Bishop said:
I have just had the same problem,,on mine it was 2 things the front PCB board £333 and the gas burner £86 Did it myself so no additional cost.
Click to expand...
How did you know to change the pcb board? Its an expensive item to replace without knowing it is faulty... could you test it??
 
Duffy2025 said:
Hello all. We have a new Swift Voyager and have taken it on two test trips in the UK and tried everything, it all worked. Now we are in Holland and the fridge will not run on gas. Local Dometic dealers say they are too busy to look at it. Gas is on and LPG tank full. There is no clicking of the igniter. Any suggestions? I can't tell you the model of fridge as no markings or labels on it.

Thanks
David
Click to expand...
It’s a Dometic Series 10. Cost a fortune(£2700 fitted) made of poor materials and break soon after purchase. My advice is do t buy anything from Dometic as they dont care one jot for customers or quality.
 
Generally you may need to purge the fridge to get rid of any air locks. It can happen regularly and purging it clears them.

Also bear in mind, I think, the the fridge generally ignites 10-15mins after the engine has stopped. Read this somewhere in the hand book.

We have a Swift Bessacarr and dometic fridge.
 
SteveandSueJ said:
How did you know to change the pcb board? Its an expensive item to replace without knowing it is faulty... could you test it??
Click to expand...
During the winter it turned itself on and used up a whole tank of gas and burnt the gas burner away.it then kept turning on by its self after I turned it off.Contacted Dometic and they said d it was the pub board faulty.

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