Hi again all,
I've deliberately resurrected this thread as my boiler woes have returned.
For the last few weeks the Wallstar has been locking out - usually overnight. I was naughty and fiddled a bit with the air & oil pressure settings, (yes, without an analyser). Anyway, even after tweaking things gentle for a few weeks I just couldn't get it running right.
So I had my local plumber come in yesterday and do a service on it. He cleaned everything up (heat exchanger had started to soot up - my tweaking had left it running rich...whoops) and reset it all using a pressure gauge and FGA. He let saying everything was set up spot on and not to touch it.
Disappointingly, it's still locking out
I notice that a large air bubble forms in the pipe quite quickly (like after a few hours), I can manipulate the bubble through the burner (which doesn't seem to affect its running, oddly), but it'll then appear again getting slowly larger later on. Could this be the lock out cause? I guess air must be coming in on the line somewhere....(but can see no oil leaking out anywhere!).
The plumber that came was experienced, and experienced with wallstars in particular (they are made locally) - what could he have missed?
The flash detector is clean, and has a clear line of sight to the electrodes. Nozzel is new, settings are correct, oil tank filter is new.
Grateful as always for any help!
Regards,
Tom