Use a magnet to locate the blockage - It should NOT stick to copper - If it does and you loacte it, this is the reason for the Pumping Over !!...
Think you need a new Div Valve section and if Exp Vessel gone 90% of the time it is the Core Shraeder and NOT The Vessel itself !!
Worst case scenario yep - Or tee into another DHW Pipe ane pipe to the tap ( Providing the Flow is good of course )
Sorry i cannot help anymore
When the taps were replaced was water flow checked ? Could be a potential blockage in pipework !
Since the New CHB Install have you EVER got hot water from this tap ?
Does anywater flow from it ?
Make sure all 3 stats are as you said.......
1) Boiler stat set to Max 2) Room-Stat up Hi ? 3) Cyl Stat above 60deg ?
Could be a few things...
What Baxi is it ?
It may have a pilot - if so, Can you see the pilot light lit ?
Also, Personally I would replace the schrader Valve core within the epansion vessel - this would be one cause of the PRV Leaking.
Guy's, i Have two of these for sale - ONLY TO RGI's though Pls.
Enquire within !
Help - Cannot find the manual anywhere ! Help !!
I'm new on here - Where are they ? Am i doing something wrong ?
RULES READ - If it is the Gas Valve you need an RGI Fitter to repair - My...
See below :
N = Neutral
L = Live
1 = HW OFF
2 = CH OFF
3 = HW ON
4 = CH ON
E = Earth
Hope this helps !
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