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Ok then, found the other valve. Its not a honeywell valve. Not sure now if it is the valve. Turned both ch and water off at programmer and its working fine. Water goes on/off as it should when told from programmer. When ch is on, heating fires up/down as the thermostat tells it to, but the...

Hi, yes i did change the head on one. Didnt realise there were two valves. Problem is the water is on all the time. I could only see one valve, next to the tank. Will the other valve be near the tank also?

Hi, my hot water seems to be coming on all the time. I have replaced a zone valve and the programmer but its still coming on nomatter what the programmer says. From what im told its an s plan with a two port honeywell zone valve. How many zone valves should i have and where should i look for...