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Evening all, I am got a small problem with a two zone ufh. One of the zones has stopped working. I am just trying to locate the problem and just after some advice. I have been to check the wiring and the thermostats. When they are asked to heat the lights on the wiring centre lights up, the...

Good afternoon all, just a bit of advice. I am currently wiring in the above time clock and just wanted to double check wiring. I have an unvented system with 2 zone valves a room stat(hardwired) and a cylinder stat. The programmer has terminals 1. Hw on, 3. Hot water off 4. Heating on 6...