I just had the same problem with mine. I took the white cover off (outside the caravan), then the metal plate that covers the burner.
It was full of cobwebs! I cleaned them out, found and removed the massive spider that was living in the fins, and fired it up. It lit straight away. So I put it back together, job done.
Hi nikkilocke, you joined UKCS in 2009 but you’ve only just got round to your first post! Welcome. This thread is about 12 years old, and the OP last posted in 2013, but others may find your point helpful.
The thread is also helpful because it has a useful contact name at arc systems, who is still active.
As well is two words!
How does a sage know everything about everything? or does he? or does he just think he does?
Remember, if you buy something you bought it, not brought it.