Recent content by shanks

hello lads thanks for the speedy replies, I've checked the pipes and operated the APS manually. I've checked continuity on the leads going to the board from the switch and everything is switching over as the negative pressure pulls in. It is switching back due to loss of negative pressure...

Hello out there, I've got a potterton performa 28 -4 1/2 years old. For the last two weeks it keeps getting an ignition fault when it calls for DHW or central heating. this can be reset albeit after half a dozen attempts. The fan starts and the air pressure switch switches. When it switches...