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Intermittent hot water fault on my Potterton Performa 28?
Potterton Perfoma 24. Hot water works fine No heating?
Potterton proforma system boiler 18 he?
Replace potterton mini minder Es?
How do I fix a Potterton combi boiler E168 Lock outfault?
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Potterton EP2000 - pump control?
why do I have to pressurising my boiler?
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