Not sure on that. All Worked great before he moved the tanks up stairs. is it possible he has connected the pump up wrong. because i just keep thinking. If he put it on upside down then the flow of the water is in the wrong direction straight away. but then why would the pump overrun?
perhaps...
I have quite a few questions. don't know where to begin. not in the right order. Please excuse me if i ramble on. :shock:
1)? Lock out. Is this when I have The Temp on the Boiler up full (?should it be on full), the Heating in Constant on, radiators all cold after being on. and the red led...