Bridging Honeywell thermostat

Notaspark0__0 · 6 Apr 2021

Installed a hive, won’t bore you with the details but I need to bridge the old thermostat terminal in the junction box. Is it the blue and brown I need to bridge? As with other threads, boiler won’t fire. Gravity fed hot water system, boiler needs water on for heating...

CBW · 7 Apr 2021

Looks like brown to green/yellow (number 3), looks like cpc (earth colours) has been used as switch live? Just check wiring

ericmark · 9 Apr 2021

If no room thermostat is fitted, add a link between 1 & 3 on ROOM STAT block.

It would seem from what is seen the damaged green/yellow is switched line, brown is permanent line and blue is neutral and in fact there is no earth.

Dangee · 3 May 2021

CBW · 3 May 2021

Dangee said:
View attachment 232359 View attachment 232358

How is this relevant to this thread?

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Bridging Honeywell thermostat

Notaspark0__0

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CBW

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