We've moved to a house which was only built a couple of years ago. The room thermostat got "lazy", so I've been trying to replace it. But I can't suss out the wiring at the stat.
It's no good looking at the boiler-end because all wires seem to go through a 12-terminal wiring center in the airing cupboard, which connect to a Drayton 3-port valve plus a Honeywell 2-port one (and cylinder stat of course). It's a real bowl of spaghetti there.
Apart from Earth, there 3 wires coming out of the wall at the stat: Brown, Light-grey sleeved Blue, and Dark-Grey sleeved (Dark) Brown.
My voltmeter needs replacing so I'm not able to use that. So I'm really hoping these wires are common in modern UK houses, so someone can explain them? Please! Is D_Hailsham around?
It's no good looking at the boiler-end because all wires seem to go through a 12-terminal wiring center in the airing cupboard, which connect to a Drayton 3-port valve plus a Honeywell 2-port one (and cylinder stat of course). It's a real bowl of spaghetti there.
Apart from Earth, there 3 wires coming out of the wall at the stat: Brown, Light-grey sleeved Blue, and Dark-Grey sleeved (Dark) Brown.
My voltmeter needs replacing so I'm not able to use that. So I'm really hoping these wires are common in modern UK houses, so someone can explain them? Please! Is D_Hailsham around?