Had caravan serviced,engineer could not get heater to ignite,he said that the gas was comming through,is it he igniter? and who would sort it out? don,t want to mess about with it myself.
Fred, I wonder what kind of "engineer" you had to service the van, and if he has just walked away leaving you with the fire still not at least diagnosed, what has he done to the rest of the van?
OR not?
As for not lighting, it could be one or more of several things.
It may be the igniter, or a blocked burner, or the spark electrode.
You need an engineer who knows what they are doing.
Have a look here for a mobile guy who could help you: