...mine probably needs a service..after 5 years not being touched, its
occasionally and randomly locking out. I suspect the flame sensor..

Any on-line details of how to strip the important parts out, clean them,
and if routine replacements of filters /nozzles etc necessary, where do
I get the sspares?

On 26 Feb, 13:02, The Natural Philosopher wrote:
..mine probably needs a service..after 5 years not being touched, its
occasionally and randomly locking out. I suspect the flame sensor..

Any on-line details of how to strip the important parts out, clean them,
and if routine replacements of filters /nozzles etc necessary, where do
I get the sspares?

There is an old post on servicing a pressure jet boiler out there.
Google is your friend.
Parts from Wolsely Paers Centre amongst other sources