Replaced the diaphragm in the diverter valve DHW flowswitch due to problems with hot water. The old diaphragm was cracked, and the boiler now works fine under both hot water and central heating, except for very slight water leak which persists from where the flowswitch connects with the main diverter valve (it was leaking from the same place before).
Maybe I haven’t correctly seated the little o-ring that came with the service kit. I placed it round the spindle close to the disk while applying silicone sealant on the spindle, and fixed the small nut to the housing beforehand. Stupidly, I didn’t check how the o-ring sat when I dismantled the flowswitch.
Could someone suggest if I have fitted the kit correctly and how to cure this problem? The leak is very slight, about a drop per minute and I observed that it only occurs when hot water is running doesn’t seem to happen when central heating is on.
Boiler is Halstead Ace High (Wickes Combi 102), 9 years old, had the same kit replaced by Halstead engineer about 7 years ago (one-off under warranty), and also the inner service kit of the diverter valve a few years ago.
Maybe I haven’t correctly seated the little o-ring that came with the service kit. I placed it round the spindle close to the disk while applying silicone sealant on the spindle, and fixed the small nut to the housing beforehand. Stupidly, I didn’t check how the o-ring sat when I dismantled the flowswitch.
Could someone suggest if I have fitted the kit correctly and how to cure this problem? The leak is very slight, about a drop per minute and I observed that it only occurs when hot water is running doesn’t seem to happen when central heating is on.
Boiler is Halstead Ace High (Wickes Combi 102), 9 years old, had the same kit replaced by Halstead engineer about 7 years ago (one-off under warranty), and also the inner service kit of the diverter valve a few years ago.