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Advice wiring a thermostat please!
Hi there
I would really appreciate help with this. The thermostat for the downstairs heating in our house has never worked, so I took a look at it today. There are 3 wires going to it: green/yellow, blue and brown. The thermostat is a Drayton RTS1, which has 4 terminals: Neutral, Live, 3 (Call for heat) and Earth. Currently, the wiring goes: Brown to Live, Blue to Neutral, and Green/Yellow to Earth. This leaves nothing going to the 3 (Call for heat), which I guess is why the thermostat isn't working! I'm guessing that one of the following is the case: 1) the green/yellow wire may actually be the 3 (Call for heat) 2) the green/yellow is actually neutral, and the blue is the 3 (call for heat) but I need to know how to check this without fusing the system! Also this would leave no earth - is this likely? I've got a digi multimeter, and there's 230 Volts coming down the brown (when checked against either the blue or the green/yellow), so that's in right, but how do I find out how to rewire the other two? Many thanks for any suggestions. xena |
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