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Andrew Smith
Andrew Smith, Plumber
Category: Home Improvement
Satisfied Customers: 3767
Experience:  City and Guilds Qualified plumber
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i have a 4 wired honeywell t6360 thermostat, and want to replace

Customer Question

i have a 4 wired honeywell t6360 thermostat, and want to replace it with a honeywell cm907, what wires do i use in the 907.
Submitted: 4 years ago.
Category: Home Improvement
Expert:  adamd-mod replied 4 years ago.

Hello there,

I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.

I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.

Please note, I am just a moderator for this category, I can only try and find experts to help, I can't answer the question itself.

Thank you!


Customer: replied 4 years ago.

yes, I am happy to wait a little longer.

Expert:  adamd-mod replied 4 years ago.


Thanks for replying.

We will continue to look for a Professional to assist you.

If you decide on a refund, or wish to keep the credit for a future question, then of course we'd honour it.

Thank you for your patience,


Expert:  Andrew Smith replied 4 years ago.
Do you want to run me through the wires you have in the original and their connections.
I am guessing red, blue, yellow, green and yellow?
Customer: replied 4 years ago.

from left to right, the Honeywell t6360 is wired as follows

1= earth

2= neutral (blue)

3= 2 x black wires which look as if they come from the 4073 hot water/

heating valve.

4= empty

5 = live (brown) which looks as if it comes from a timer control panel


The Honeywell cm907 has 3 possible wiring connections

one says neutral, one says live the third is blocked but looks as if it is designed to have a link to the live connection. The cm907 is battery powered and apparently doesn't need an electrical supply.


Expert:  Andrew Smith replied 4 years ago.
Normally, if it is battery powered then all it does is link a couple of connections together.
If this is the case then there is no need for the neutral or earth if there is no connection.
A - in
B - out