Burner lock out on heating only?

[sym]

I know that this makes no sense, but I have a boiler burner that only locks out when the heating is on. I know that the burner only receives power to make it fire and has now idea whether it's from hot water or heating but that is what's happening.
Any ideas?

 

[SimonG]

Whats the oil pressure and co2 whilst its running like?

 

[Best]

I haven't really a clue what you exactly mean.
By lockout, - I take it you mean going to lockout & needling to be reset by pressing the control box button?
If it is only locking out when heating to rads is on (I really am not sure if that's what you are saying) - then perhaps it is a burner fault that only develops after the burner has run for a longer on off burn time.
Some faults take an hour or more to occur.
You need a boiler engineer to check everything for safety, if you are not experienced with oil.

 

[lame plumber]

circulation pump knackered?

 

[kimbo]

circulation pump knackered?

Knackered circ pump wouldnt cause burner to lockout, it would cause overheat stat to trip

 

[Dotty]

Knackered circ pump wouldnt cause burner to lockout, it would cause overheat stat to trip

The OP could be confusing the limit stat for lockout...

 

[Best]

The OP could be confusing the limit stat for lockout...

Thats what I had thought & why I had asked in my reply, was he actually needling to press the lockout button.

 

[Dotty]

Thats what I had thought & why I had asked in my reply, was he actually needling to press the lockout button.

You did indeed, I'm still catching up....

 

[lame plumber]

You did indeed, I'm still catching up....

i was just keeping it simple, so croppie could catch up

 

[Best]

i was just keeping it simple, so croppie could catch up

It could take weeks for all that beer to leave his body.

 

[gasmanrob]

Thinking outside the box could it be electrical. Relay on programmer blinks off and on quick and only comes back at say 180v due to grubby contact and when burner gets ready draws voltage then shuts down again mid sequence as programmer flicks off again 2 or 3 times hey presto lock out. That would also allow hw to operate normally as it's a seperate relay

 

[lame plumber]

and the op is no further ahead, accept to realize he needs a techie round soon