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Boiler problem

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10 Nov 2022
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How to tell if 2 port valves or Timer is faulty? The Boiler green light do not ignite unless the HW on Timer is switch on but not when CH is switch on on Timer?? Please help?



Folkestone
 
Checking voltages at the wiring centre would establish the fault.
It's more likely the motorised valve than the programmer/ timer.
 
********* Note to site admin******* as an aside, why is this thread in my alerts? I haven't previously posted in this thread.
 

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