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Hi, hope someone can help, when I turn on the hot water the water doesn't seem to get hot, as boiler flares up it soon goes of then back on again and never reaches the desired temperature, thanks

Hi, been given a nest 3rd generation thermostat, can anyone give some advice on wiring the link up, this will replace a Honeywell relay, the nest will be connected wirelessly, I have 2 wires coming out of the relay as pictured, where do they go in the new nest link, regards

I keep losing pressure in my system, one engineer said at it and said it was the expansion vessel, but never came back to sort it, next engineer said it wasn't but pumped it up anyway, when the heating is on and the hot tap is turned on the pressure jumps up, to which the engineer said he has...