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Hi Bob Here's the link http://www.oiltechs.org/forum/index.php Would be great to see you on there! Andy

He's still around! He still posts on the oil forum but not as much as he used to. Andrew Hounsfield also posts on the forum and is a switched on guy.

Turn the boiler off until you can get a trusted Oil tech to confirm that this application is not leaking POC into your home.

I'm slightly concerned that this advice is being given to a DIYer who cannot prove that POC a will not be leaking from his boiler. I replace Firebird ceraboard day in day out and I am obsessive about the fit and potential for leaking POC. Depending on how much sulphur etc has built up in CC...

If you replace firebird combustion chamber insulation then ensure that no POC leak from the CC access door. I always use my flue gas analyser to prove this.

That looks like new insulation!

I have no idea how these keyboard experts have the time/energy/inclination to argue the toss about the legality or otherwise of DIY gas work. This time could be spent doing something worthwhile surely?

Not if the burner is "locking-out" which you have already stated is happening

Then try a new solenoid (standard van part for an oil tech).

I'd be looking at solenoid coil failure. Intermittent lock outs on a Wallstar can be a PITA and a lot of the time caused by oil supply issues. But given the symptoms you describe my first port of call would be oil pump solenoid. Take a look at hose when burner is running. Is the air bubble...

So are you pressing the burner reset button or overheat thermostat reset ?

That looks like a G5 R40 boxed burner and Riello solenoids are pretty bullet-proof in my experience. The symptoms in the video could be: Excess air too high Failed cell Failed pump I'd try tackling the fault in the above order. (Easiest/cheapest fixes first) May need a competent tech though...

Edit

Tried to pm you but can't see a function to do so. If you can find out how I can pm you I'll send info

Hi Mike I do know a company that could help you out. You seem like a sensible bloke who wants to get on. You will be expected to make a commitment and time-keeping/reliability is an absolute must. If you are not pulling your weight or do not demonstrate the right attributes they will suss...

Compensation.....please !

Are you sure it's the cell? Can you hear the flame establish when you shine the light into the cell? From how you describe it I would say it sounds like there is no flame as you have proved the cell works. RDB burners are pretty straightforward and if the cell faults the burner goes into...

Hi If you are using the pink QRB which is a high sensitivity cell then it may be detecting "false light" from the ignition. This will cause the LOA24 to pre-purge and then lock-out after 5 seconds. Try spinning the cell around to face away from the flame. Do this before changing control box...

Dickie...I am currently wiping a tear from my eye....

Yep sorry I forgot capacitor...easy to check value/replace