Rayburn 400K

[SJB060685]

Isn’t it supposed to spark tho ?

Yes you would have ignition on during pre purge cycle on that control box until a few seconds after flame is established. I think what he meant was that there was no ignition of the fuel? Might be wrong though. Either way I'd feel much happier if he managed to find someone to sort it for him. It could be a few things but whatever it is will need tools/equipment I doubt he has.

 

[Uncle Nick]

Isn’t it supposed to spark tho ?

It wasn’t sparking. I thought it maybe wouldn’t spark if there wasn’t any fuel.

 

[SJB060685]

It wasn’t sparking. I thought it maybe wouldn’t spark if there wasn’t any fuel.

How are you sure it wasn't sparking?

 

[Uncle Nick]

Yes you would have ignition on during pre purge cycle on that control box until a few seconds after flame is established. I think what he meant was that there was no ignition of the fuel? Might be wrong though. Either way I'd feel much happier if he managed to find someone to sort it for him. It could be a few things but whatever it is will need tools/equipment I doubt he has.

You’re right, I’ve a good selection of tools but I’m missing the exhaust gas analyser. I’ve found a local guy on fb that does oil boilers so I’ll give him a ring on Monday.

 

[Uncle Nick]

How are you sure it wasn't sparking?

There wasn’t the clicking sound of the spark. I’ve checked the electrode position and it’s ok. Plus the leads are securely pushed in/on and tight.

 

[SJB060685]

You’re right, I’ve a good selection of tools but I’m missing the exhaust gas analyser. I’ve found a local guy on fb that does oil boilers so I’ll give him a ring on Monday.

I appreciate you're a hands on type of person and I know it's frustrating when your primary energy source fails and you struggle to find someone but as the old saying goes "a little knowledge is dangerous knowledge".

There wasn’t the clicking sound of the spark. I’ve checked the electrode position and it’s ok. Plus the leads are securely pushed in/on and tight.

By the sounds of it then you may have more than one problem. If it's genuinely not sparking and I would confirm this by running a specific test (which I won't explain what) then you could have a control box, box mounting plate or a dodgy transformer. You could also have a breakdown in electrode insulation and it's arching across the blast tube. You really need someone to start at the tank and work their way in.

 

[Uncle Nick]

It did cross my mind that it could be more than one fault but it was working ok and seems odd that a couple of things fail at the same time. It’s frustrating as hell, especially as sometimes it fires up and sometimes goes straight to lock out.

 

[SJB060685]

Without being in front of a troublesome burner it's hard to say what is the fault, we can only speculate.

 

[Uncle Nick]

Without being in front of a troublesome burner it's hard to say what is the fault, we can only speculate.

Exactly. I just wish you were in the north east and could come and see it.
Thanks for your help, appreciate it.

 

[Uncle Nick]

Hi again all, quick update, a local guy came out, (reluctantly - he doesn’t normally work on Rayburns and only agreed as this is a burner issue)
At first he agreed it was probably the pump but first checked the solenoid on the top, which was faulty.
A new solenoid fitted and everything working as it should. Touch wood rapidly!