Pyewacket

I have a W-B system installed in 2015 by a certified trader. It’s a neat job and works really well, but… if the weather is very hot or sunny (as we have this month) the pump stops when the cylinder gets to 72° and the collector then overheats and gas collects in the system which I have to bleed every few days. the fluid was changed two years ago but the problem remains. Any suggestions please?

Steve, thank you. Would definitely be interested in a preemptive fix. The V2 stats aren’t cheap! Where are you based? j

I have had the same problem. AT about 9 years old one V1 Neostat PSU has failed. I managed to source a NOS replacement and all is well but I may try to ventilate the others to reduce the chance of failure (if this is indeed the cause). Of interest the transformer on the faulty PSU has minor discolouration suggesting it is the faulty element. The capacitors look ok but I’m not an electronic engineer so can’t test any of the components. If anybody can suggest where I could source a new transformer I could try to solder in a new one. J