Troubleshoot Honeywell T6360 thermostat

[asktoby]

I have a Honeywell T6360 thermostat that I suspect is failing and would like to confirm that before I replace it. (Symptom: radiators not turning on).

Looking at the wiring diagram, would I be correct in thinking if I short pins 1 and 3 it would simulate the effect of the temperature being high enough to turn on the heating?
i.e. shorting pins 1 and 3 should make my radiators warm up.

Honeywell T6360B Wiring

• asktoby
• 30 Sep 2021

 

[RandomGrinch]

Yes!
But be bloomin careful what you 'short' it with!
With the power off (and double check, preferably with test equipment!)
I would disconnect the red (1) and yellow (3) and connect them with a suitably rated terminal block or wago connector.
That should (hopefully!) give you an answer.

 

[denso13]

Put the red and yellow in to the same terminal on the stat. That will bypass it.

 

[RandomGrinch]

Put the red and yellow in to the same terminal on the stat. That will bypass it.

Yes, I'm over thinking again. I just don't want to get in trouble with the electrician's. They're sometimes a moody bunch on that side of the forum!

 

[CBW]

Put the red and yellow in to the same terminal on the stat. That will bypass it.

Yes, preferably terminal 3 if wired correctly.

Also OP, any other controls? Combi boiler, open vented, sealed system?