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Deleted member 123817
If the link is just removed and the stats are still switching the supply then thiseans that they are fed from elsewhere and the black wire should be inserted in terminal 3, period.??
Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
I agree with your post #36What number terminal is this please, from the left.
No that is not consistent with what Diagram C shows. Surely the power needs to be fed into the next terminal along - the 5th position as you are counting?I believe i understand this now 🙂
The black wire which enters to the bottom of the Room STAT/Timer block link is carrying power which is carried over through the link into the red wire leaving the bottom and activates the demand for central heating. Hence the boiler firing constantly.
By removing the link and placing the black wire in the 4th position (counting from the earth as number 1) as soon as the thermostats activate, power travels down the black wire and the demand for central heating fires the boiler.
Is my understanding correct?
But I'm not buying a new boiler if it's wrong 🤪Got it 🙂
I believe i understand this now 🙂
The black wire which enters to the bottom of the Room STAT/Timer block link is carrying power which is carried over through the link into the red wire leaving the bottom and activates the demand for central heating. Hence the boiler firing constantly.
By removing the link and placing the black wire in the 4th position (counting from the earth as number 1) as soon as the thermostats activate, power travels down the black wire and the demand for central heating fires the boiler.
Is my understanding correct?
Terminal (from left) 3 Shaun if terminal 4 is live with link removed?? (post 15).
Just like the attached ShaunCorbs?
Reply to the thread, titled "Logic Combi ESP1 35 always showing demand for Central heating" which is posted in Central Heating Forum on Plumbers Forums.
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