I am hoping someone may be able to help me. I have now owned my 2002 Stirling Elite Explorer for about 4 years and up until now had no problems.
I used the caravan a few weeks ago and then again last weekend and both times the Truma Ultrastore had problems heating the water using gas, fortunately I had a generator with me and was able to get around the problem.
When I switch it to work on gas it ignites and runs for a minute or so and then starts the ticking cycle ignites again for a few seconds then starts ticking but fails to ignite and the red light comes on. (the flue cover is removed)
Yesterday I stripped it down and blew the gas burner and solenoid valve etc etc out with a compressor and reassembled, refilled and tried it and its still the same . It senses when it ignites and shuts the spark off then will run for a while and go out. I have checked the gas tap below the sink and it is open, if I remove the gas pipe from the truma ultrastore gas comes out. Last night I went out to check if the flame was actually going out as I thought it may be a faulty flame sensor not sensing it was alight. I could see the blue flame inside the vent but after a few minutes the flame would go out and the ticking cycle would start until it would fail to light and shut off.
This draws me to think its a gas supply problem, the cooker , oven and central heating/fire all work at the same time without issue so I believe the regulator is working ok. Sorry for rambling on but thought I would try to provide as much info as possible.
possibly (1) NEEDS A NEW THERMOCOUPLE OR (2) THE GAS VALVE
ON THE APPLIANCE IS FAULTY.
I WOULD SUGGEST FIRST REPLACE THE THERMOCOUPLE AS THIS IS THE CHEAPEST.
I have seen this a few times and the remedy has been to replace the PCB. I did try with the first one changing the associated bits one at a time but in all instances it was the PCB at fault. The gas valve must be opening and the ignition sequence correct for the heater to ignite. Do you have a friend that you could borrow a PCB from just to prove the fault??
------------- Mobile Caravan Service and Repair West midlands 01922 442170 07540 893379
I replaced the gas solenoid valve today and ran it for a few hours without issue. The old valve was opening ok but must have had a restriction inside it.
Thanks for all the help, I will try it again tomorrow just to be sure
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets
Topic: Truma Ultrastore gas problem
