Potterton Promax 15 HE Discussion Thread
Been called out to an issue with a Potterton Promax 15 HE. Boiler fires up and runs for 30 seconds, no heat leaves the boiler, then you get loads of clunking which sounds like air/crap. Then flow and return get red hot and it cuts out. Have disconnected flow and returns from boiler and and checked that water passes through the boiler without obstruction, which it does. Have checked where cold feed and vent enter the system no blockage there. Pumps working. Have tried draining down and refilling, fills fine but still get the same issue. Any ideas would be appreciated. I’m gas safe registered
Potterton Promax 15 HE for the original thread on Plumbers Forums
Been called out to an issue with a Potterton Promax 15 HE. Boiler fires up and runs for 30 seconds, no heat leaves the boiler, then you get loads of clunking which sounds like air/crap. Then flow and return get red hot and it cuts out. Have disconnected flow and returns from boiler and and checked that water passes through the boiler without obstruction, which it does. Have checked where cold feed and vent enter the system no blockage there. Pumps working. Have tried draining down and refilling, fills fine but still get the same issue. Any ideas would be appreciated. I’m gas safe registered
Potterton Promax 15 HE for the original thread on Plumbers Forums
