Rayburn 400K

[Uncle Nick]

Hi all, I’ve a Rayburn 400K (cooker only) which has a Ecoflam Minor 1 oil burner, that I suspect needs a new pump but I’d like some help please before shelling out on a new one.
The problem is that it keeps going to lockout.
I’ve checked the oil flow to the pump and it’s fine. I’ve bled the pump and there doesn’t seem to be any air in the line.
When switched on after bleeding, the burner fires, runs for about a minute and goes to lockout.
After resetting it purges and then goes straight to lockout without firing.
It seems to me a fuel starvation issue but I don’t understand why it runs ok at first after bleeding.
Any ideas?

Thanks in advance.

 

[Uncle Nick]

Yep, easier and cheaper fix than I dared hope for!

 

[SimonG]

Ok. Did you check cell to see what microamps you were getting?
The Danfoss coils on that burner are a common fail point. Usually when they fail they do so within in 10-15 minutes after ignition. They break down internally where you would get a zero resistance reading or no continuity, often they can fuse back together and you get the problem you had, alternatively they remain OL (open loop) and never work again. The new Danfoss diamond coils are supposed to be a lot more robust but still not without their problems. If you find you're going through several coils then I would consider changing the stem on the pump. I can explain to you why if you'd like or you can just bare it in mind.

I dont find the 'improved' coils to be any better at all.

 

[SJB060685]

I dont find the 'improved' coils to be any better at all.

I'm not convinced either

 

[Uncle Nick]

I dont find the 'improved' coils to be any better at all.

Oh dear, that’s not good. Wait and see I guess!