Fridge and heating boiler will not light! Help

[Gareth Morgan]

Currently in Holland. Have had no problem with fridge (Dometic) igniting when using gas and Truma boiler also lights ok. Until now!
I have no spark for lighting gas fridge and heater also not lighting. Interestingly the oven lights ok.
Fuse ok

 

[r4dent]

The oven (provided it stays alight for a couple of minutes and isn't just using gas in the pipes) tells us that you have gas and the regulator is OK

Check the gas manifold to ensure fridge & heating valves are open
These are sometimes closed accidentally

It you have gas then you probably don't have a spark.
On some systems the spark uses the 12v of the motorhome
a) Check the 12v master is switched on
b) Check all fuses. Use a meter don't just look at them.

Some devices use AA or AA batteries for the spark. Please test these if you have that type.

Next we need model details
MoHo Make / Model / year
Fridge make / model.
Boiler make / model.

If the fridge is AES what settings have you tried.

Do the fridge and heating work on 230 v?

Do you have fridge / Boiler manuals?
When did each last work on gas?

With this information we may be able to do more troubleshooting.

What ever happens tell us, then we know more to help the next member with a problem.

Good Luck.

 

[Gareth Morgan]

Thanks for quick response.
The problem is lack of spark although the oven does spark!
12v system on and everything else ok
Fuse to fridge is good. If removed all fridge lights go out and back on when replaced. Cannot see any other relevant fuse.
Fridge works when engine running and was ok on 230v when left site this morning.
Boiler has not worked on 230v this trip but was a problem we were aware of and it has worked ok on gas.
Cannot find another fuse which may be responsible. Batteries not used for spark
Fridge is Dometic RMT 7651
Boiler is Truma combi 6E
Van 2011 Hobby Siesta 650FLC

Thanks

 

[Greengrass]

Currently in Holland. Have had no problem with fridge (Dometic) igniting when using gas and Truma boiler also lights ok. Until now!
I have no spark for lighting gas fridge and heater also not lighting. Interestingly the oven lights ok.
Fuse ok

 

[Gareth Morgan]

Gas now igniting!! Think problem may be Truma boiler knackered. Will have to boil water on hob but will manage.
Thanks for help.

 

[Greengrass]

Probably the spark igniter on the back of the fridge if you can reach it give it a slight tap sometimes it will work if not a new one £125 about

 

[r4dent]

I've found a manual .

https://www.gaslowdirect.com/wp-content/uploads/2022/03/Absorption-7-Series-service-instruction-EN.pdf

This implies that the spark can be from a Piezo igniter or from a AAA battery (Page 35).
Do you know which your fridge uses ?
It not attach photo of the ignition button.

If it is AAA battery these need replacing ever few years (vids on YT).

 

[r4dent]

Gas now igniting!!

Is that the fridge or the water heater?

 

[merl]

Press the igniter button and see if you can hear a ticking from the spark at the burner, if not then a lot of fridges have a 1.5 volt battery hidden behind the igniter button (please don't ask me how I know ).