Recent content by Jonquil

Sorry, I'm back again (last posted reply sent too soon!). The plumber (having repaired the thermocouple, managed to short circuit something else so I had no DHW but CH demand would fire boiler) did something to the zone valve so that presumably it was by-passed and no cold showers for a while...

I hope you don't mind me muscling in on this topic. I had a flame safety valve replaced on an old (but very reliable Ideal Standard boiler). The pilot light had gone out and this is something that happens periodically. Everything else was working fine. When the plumber asked me to switch on...