boiler flame pulsate?
our boiler saunier duval, model No Thelia 23, when swathed on the flame pulsate, corgi reg engineer came to look at it and he thought it was air pressure switch and tape sealant around front cover, but he failed to remedy the problem, boiler flame still pulsate can you tell us what the problem is, not many service engineer wants to come and look at saunier duval in north London.
girish Tailor, November 2007
