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PostPosted: Sun Apr 29, 2018 8:24 pm 
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Hi there,

I have a potterton performa 30 HE
Central heating works fine.

DHW is the issue, I am starting to have to open 2 hot taps to get a shower or wash the dishes.
There is enough water pressure coming in the the house.

Could some one help me please ?

Thanks
Dan


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PostPosted: Mon Apr 30, 2018 8:12 am 
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Either the diaphragm has perished and partially holed, or the Hydraulic Venturi has disintegrated in the right side hydraulic inlet assembly.

I personally would go for the second with your description. Last one I done a couple of weeks ago was the worst PITA I have had for ages and ended up having to fit an entire new hydraulic inlet assembly as nut holding the venturi wouldn't undo, even after removing the entire assembly.

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www.drlgas.co.uk


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PostPosted: Wed May 02, 2018 6:39 am 
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Hi Dave, many thanks for you great advice, I changed the diaphragm on
The diverter valve and one of the DHW sensors as they were
Both perished. I can now run 1 hot tap and
Get running hot water :huray:
Thanks Dave

Dan


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