Hello. I worked on an oil boiler that when the outside door is closed the burner goes to lockout. When it is opened slightly it works perfectly. Ha

[Boilerman35]

Hello. I worked on an oil boiler that when the outside door is closed the burner goes to lockout. When it is opened slightly it works perfectly. Has been working fine in same situation for 20 years. I replaced the gasket at the burner and replaced the fire board on heat exchanger access door and still no fix. Has anyone any ideas?

 

[SJB060685]

Seals would have been my first thought too. What's your FGA readings? Have you checked fan intake and impeller for dirt etc? Possible you have restricted air flow when the casing is on.

 

[SimonG]

What boiler is it and how is it flued? Is it a through the wall boiler?

 

[Boilerman35]

What boiler is it and how is it flued? Is it a through the wall boiler?

I got it sorted all the flue was leaking where i could not access it or see it thanks for reply. Iam working a warmflow utility 90 and i need both door seals for main and secondary heat exchangers. Cant seem to get the main heat exchager seal any ideas?

 

[SJB060685]

Try HWOS heatingworldofspares.co.uk