Having replaced the thermo coupling today and when pressing in the right hand button can some times get a flame but when releasing the button before turning the knob further round it goes out. However once or twice it stays on and when trying it again it refuses to even start up. Could it be the "valve inside the Y branch?.

Robert, March 2009

I am adding my own answer to question. The service guy came and could not find the fault , he spent about 1 hour on it. Suggested take it to the dealers and see whether they can trace the fault.I then took it to Service force Ashford. Got a phone call from them that the thermo coupler i put in ( PATTERN ONE) was faulty ie it was loose in the fitting and the other thing was the switch assemly where when it was put on gas it did not always connect , so now its back in the caravan and working as it should Total bill £124

Robert, March 2009

Thanks for answer but as i said i have cleaned all pipes and burner plus jet.

Robert, March 2009

is the gas jet blocked causing a low flame and stopping the thermocouple holding the gas valve open?.I would remove the gas jet and check rust hasn't got in there causing your problem

ck, March 2009