A
aplombier
Hi Chris
I agree it's difficult when not on site to diagnose fault, im suspecting pump, it could easily be some clown has played with a gate valve and it hasn't got clear return flow back to boiler, or even sticky diverter valve, one way or another it ain't moving the heat through system so it has to expand and send it over the vent pipe.
I agree it's difficult when not on site to diagnose fault, im suspecting pump, it could easily be some clown has played with a gate valve and it hasn't got clear return flow back to boiler, or even sticky diverter valve, one way or another it ain't moving the heat through system so it has to expand and send it over the vent pipe.
