Problem occurs after lighting with gas control held down for 20 secs. Burners flash up when control slowly released but usually after a short time the burner goes out. This period between lighting and going out varies between 30 seconds and 10 minutes. On one or two occasions recently I have managed to light the fire when it stayed on for a few hours and everything looked ok at that stage but it has again returned to the going off shortly after lighting. Have checked flue and air intake to burner for obstructions and all clear. When burner is lit it burns with a strong blue flame. Running on blue bottle with outside temp about 4 deg c maybe too cold but the same problem also occurs when temperature rises so probably not a vaporisation problem. Have sent for new thermocouple and exhaust gasket so hope this fixes it. Not looking forward to having to replace thermostat and valve due to cost but this does seem to control heat levels when the fire does work. Something intermittent going on but I cannot for the life of me find what it is so resorting at this stage to changing the thermocouple. Anyone any other ideas?
Thanks
Doug
If it is a carver 3000 up to and including 1993 and not the 3000S? then below will be of interest
Theres another thread on here about a truma 5002, in actual fact yours is half of this double 3002 and rebadged as a Carver 3000.
So if it's been very windy while you've been having this problem? then wind is the cause, not the thermocouple.
There is a roof flue extension kit available that's supposed to cure it, personally I'm sceptical about that, but wind is sometimes a problem when it's strong enough and blows under the van in a particular direction.
So try parking the car so to block the wind or use a wind breaker of some sort and see if it works ok then?
Thanks for the advice. It has been windy here and I will take this on board about a flu extension, although I cannot find one. Van parked at the side of neighbours garage with the back end up against the wall of my house so the "eddy" effect may well be responsible. Managed to get the thing lit for a while but it again went out. It did relight but went out again after a while. Will try again on a calm day but still need to sort it out if the flu is the problem in a wind. I notice that the caravan roof is a boat shape with the flu exiting near the offside edge. This makes the top of the flu just a little short of the higher centre on the roof which probably is the main cause of this when the wind is in a particular direction. May be possible to extend the flu myself with an appropriate length of plastic or aluminium.
Thanks again for the advice