HI..Question...just the front gas ring will not stay lit...everything else is working ie gas fridge,fire,etc. no problems. just the gas ring..we reported it to glossop caravans who gave premission for us to use a qualified gas engineer in our area to do the work under warranty..he change what he thought was a faulty thermocouple...this still didn't slove the problem...our van " a swift charisma" 2011...has been back at intervals for the said reason. I have kept glossop caravans inform of this problem ...as of now its back at glossop for repair..my question is ( Can we still claim the repair under warranty ? the gave us 15 months which is up . but its been an on going problem. the engineer who has service our van is puzzle as to what is causing the burner to fail to stay in .i have sent Thetford an email to which i have had no reply. has anyone else had this problem. Michelle. stoke on trent.