Replacing analogue roomstat with Honeywell CM907; wiring?

Swoxy · 31 Mar 2012

CM907. Am I doing this right? I don't think I am. I don't have any other wires. Thanks ...

D_Hailsham · 1 Apr 2012

Swoxy said:
CM907. Am I doing this right? I don't think I am. I don't have any other wires.

Are you replacing an old mechanical thermostat which had only two wires connected? If so, you are correct. The brown goes to A and the Blue to B. The blue wire should really have some red sleeving or insulating tape round it to show that it is the switched live.

JeremyP · 2 Dec 2013

Thanks Alex. This was helpful.
The Honeywell instruction were fairly clear but not on what to do with the old neutral.

JeremyP · 2 Dec 2013

PS it's worth knowing if the display fails they will replace the part F.O.C.

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Replacing analogue roomstat with Honeywell CM907; wiring?

Swoxy

D_Hailsham

JeremyP

JeremyP

DIYnot Local

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