I am unlucky enough to have a sabre boiler that has a mind of its own. It works when it feels like it. Have had a gas safe guy look at it today but he is reluctant to take the job on as not convinced if he puts a circuit board on which he thinks it is. It will cure problem. I'm sure it is going to be something simple as when it works it works any ideas?

mark nute, October 2010

is it solid red led lockout? if so try replacing the high limit stat as it causes this fault, but doesn't mention it in the manual. the primary sensor can also cause this fault. you should also have the gas pressures checked. if all those are ok then pcb. yellow led indicates sensor faults,

Ian, October 2010