Sabre HE boiler?

hi thats because it takes its combustion air direct from outside so it would indicate a problem with air coming into the combustion chamber.
hence why boiler runs with cover plate off as it getting air from the room.
check fan blades and venturi duct are clean also check aps
most likley to be dirty fan as due a service fixed loads by simply cleaning and servicing get a gas safe eng round.

charlie
January 2011

Did any of you find an answer to this problem because mine has just started doing the same...
Take the covers off and it fires up fine. put them back on and nothing.

Rory
July 2009

Has anyone got a definite answer to this as mines is doing the same

fred
May 2009

hello,dnt knw the answer,but mine is doing the same!! did you ever find out the problem? would love to know! manythanks

jeremy
August 2008

could be heating stat or p c board

johnson fox
July 2008