Bentone B11 burner always locking out.

[Best]

I went to the boiler later today with the intention of checking the oil pump etc & if all okay then either replacing the motor or the transformer as all else had been tried.
Luckily the boiler had been on a short time, so I first took a look at the spark & it was a lot different than previously - although consistently sparking, it was no longer a very strong spark it had been earlier tests. I have replaced the EB1 transformer in a few minutes & spent an hour & a half waiting. Hopefully that sorts it.

 

[Dotty]

I went to the boiler later today with the intention of checking the oil pump etc & if all okay then either replacing the motor or the transformer as all else had been tried.
Luckily the boiler had been on a short time, so I first took a look at the spark & it was a lot different than previously - although consistently sparking, it was no longer a very strong spark it had been earlier tests. I have replaced the EB1 transformer in a few minutes & spent an hour & a half waiting. Hopefully that sorts it.

Eejit! You should've kept quiet! You know you've cursed yourself now! Hopefully you're right though.


Why haven't we got you in the Arms?

 

[Best]

Eejit! You should've kept quiet! You know you've cursed yourself now! Hopefully you're right though.
Why haven't we got you in the Arms?

I will look an idiot if this doesn't solve it. I'll just never admit it! :smile:
Maybe some day I will join the Arms! Would love to know what goes on in that secret place. :grin:
Thanks to all of you for the advice! Just goes to show, if this works, never trust a transformer that gives a strong spark!

 

[Dotty]

I will look an idiot if this doesn't solve it. I'll just never admit it! :smile:
Maybe some day I will join the Arms! Would love to know what goes on in that secret place. :grin:
Thanks to all of you for the advice! Just goes to show, if this works, never trust a transformer that gives a strong spark!

Got fed up waiting for you to get off your aristotle. I've put the wheels in motion for ya

 

[kimbo]

Eb1 transformers are renowned for intermittent lockouts. Always keep a couple in the van

 

[Best]

I keep a new EB1 in a case together with control boxes etc.
If it proves to have been the transformer, then I made the mistake of ruling it out because the spark (which I repeatedly tested several times on a couple of visits) was always very strong. Hard to know what approach would have been better, other than waiting for hours. Thankfully it is close to me.

 

[kimbo]

I have come across these before when other so called engineers cant fix them so they tell the customer they need a new boiler.
hope it all works out best never easy these intermittent lockouts but we always get there in the end

 

[Best]

Yes Kimbo, have seen a lot of fairly young boilers with brand new burners fitted where no doubt just a little part would have sorted the original burner. Or an entire new boiler as the customer probably is easy prey when they have an ongoing failing burner. I would always fix anything viable if cost isn't going to be close to a entirely new item. This time I wasted a few visits, but usually I don't take much time finding a fault - so really can't complain & I will stay easy going. :smile:

 

[Bunker]

I didn't post on this as you know what your doing and I couldn't find anything that hadnt already been said, except have you done an FGA? Check its not over aired and blowing itself out.
Hopefully you fixed it anyway.

 

[Best]

No worries Bunker, - I was only putting the question out there to see if anyone had came across similar problem.
I knew the combustion was fine, as had tested it after service & new nozzle, but it had been prior to that locking out. Burner is on a WB std utility boiler which I could set easily & firstly had been done by me at commissioning years ago. Boiler always started on press of lockout whether warm or cold start & co2 was I think above 11%, so was confident not over aired.