Recent content by Bus429

changed the limit stat today - the only thing left is the PCB replaced earlier this year. The problem only manifested itself after that. Thanks for all replies.

Hi Oilman, done that - still the same. Should also mention the central heating stat also suffers in the same way.

You may rmember my earlier tale of woe but this boiler crapped out electrically over Christmas and has had a new PCB, new flow switch, new expansion tank, new oil solenoid. This all cured the original problem. During adjustment, the engineer could not get the CO levels right and changed burner...

Oilman - thanks very much for response; I'll correct my error concerning the configuration of the PCB.

The Worcester 26/32 Heatslave boiler broke on Boxing Day with following symptoms (diagnosed by engineer) and happened at the same time. Leaking flow switch caused water to wick through sheath and spill over PCB and boiler overheat stat - both went bang Expansion chamber diaphragm...