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    Hot water comes on, but not the heating; thermostat fine…?

    Hello all, I could use some help here. My central heating doesn't come on when its meant to. The thermostat appears to be fine. Using a multimeter I get 240 V across the live and neutral; 240 V across switched live and neutral when thermostat is on and the neon light glows; and 0 V across...
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    Towerstat RS vs. Honeywell Wiring Centre; wire colours

    Hello again, Almost got my Honeywell Wiring Centre all worked out. Boiler, pump and valve all working fine. But there's one last bit I'm stuck on. The room thermostat has four sockets, numbers 1, 2, 3, and 4. On the wiring centre though the sockets are labelled 1, E, 2, and 3. How do I...
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    RWB9 programmer vs. Honeywell Wiring Centre; wire colours

    Hello, I'm trying to wire up a sparkly new Honeywell Sundial Wiring Centre but have come a bit adrift with the RWB9 programmer. The programmer has 5 wires: green, blue, orange, grey and white.* The wiring centre has six screw-down sockets for the wires, labelled L, N, E, ON-CH, ON-HW, and...
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