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I need to change the drain valve on a Biasi Prisma combi. A local supplier has one for an Ariston that he thinks will fit. Not only does it look like the original one that came with the Prisma but its also only a third of the price of the Biasi one. I changed the original one many...

I bought a service kit from ebay advertised as BI1011504 original part. The kit is for the water section which I intend to fit this weekend. However, the spring loaded bit which is meant to push out a pin to make the DHW switch does seem to have enough movement to achieve this function...

I have at home a Biasi 24s in an average 3 bed semi with 8 radiators, HW works fine but I am sure it used to be bit hotter when set at max. The pressure is set at 1bar but I have experimented by increasing to 1.5 The issue is with CH. The boiler fires for only 30 seconds after a few...