Up at Fort William,instead of France temperature a bit different!We Havnt used the Truma heater on gas for years!I think the igniter has gone ! hasn’t bothered us as havnt needed heating very often and when we have we have put it on electric!But now we could do with some heating it is playing up on electric.appears to work sometimes !not working tonight!Switched on.green light on.selected 500,1000,or 2000 20* on thermostat.nothing!any ideas?