I have a Potteron back boiler for central heating and hot water.Until recently it has all worked OK but now I cannot get hot (only tepid)water with hot water only selected. The pump is OK., the boiler has been serviced, I cannot find a priority valve or a tank stat and the best suggestion I mhave had is to drain the system because it is probably an air lock. I have bled the indirect connection on the tank but no sign of air. The boiler is a Housewarmer 45/55.I can carry out any work required.

S.Gumbley, May 2007

PROBERBLY THE PCB POTTERTON ONES NO GOOD SEE WATCHDOG BBC

DAVE, May 2007

if you can find no valve or cylinder water stat i would say its gravity water and pumped heating.

1. check what the stat is set to on the boiler. has that been turned right down ?

2. how hot is the feed into the cylinder and return back out ?

hi-spec plumbing, May 2007

if you can find no valve or cylinder water stat i would say its gravity water and pumped heating.

hi-spec plumbing, May 2007