Can someone please tell me why there new thermostat isn't powering up? I copied the wiring from the old one, with the exception of the earth wire, which I have capped in a wago. Thank you.
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The swap is not just as simple as copying the existing wiring, the existing wiring looks like it is just a live and switched live and your new stat would need a neutral, copying the wiring it looks like you might have the live in the neutral connectionCan someone please tell me why there new thermostat isn't powering up? I copied the wiring from the old one, with the exception of the earth wire, which I have capped in a wago. Thank you.
What test equipment do you haveThere are four cables in coming through the wall on the thermostat end, how much help is that? How can I test?
Thank you. I was thinking of unscrewing the fused switch from the wall behind the boiler to see what wires are in there. Will all the wires be there or will some go straight to the fuse box?Yes, a multimeter can test for voltage on the right scale setting.
Wrong scale setting will
A word of caution however, that the spare wire may indeed be a neutral, or it may not be connected to anything at the other end.
Testing between your live and this mystery wire may give the impression the circuit is dead when it is not.
The other end of the cable may be in a wiring centre (joint box) rather than straight back to the boiler.
It would be unlikely to go to the switched spur, the thermostat could go to the heating controller, the wiring centre or direct to the boiler depends on what type of system you haveThank you. I was thinking of unscrewing the fused switch from the wall behind the boiler to see what wires are in there. Will all the wires be there or will some go straight to the fuse box?
Any recommended setting?
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