My 350 is from 1998 the central heating works but I can't get hot water.A plumber came out and said it was too old to fix.Does anyone think it could be fixed.
I had a reverse problem with a Potterton Boiler had hot water but no Central Heating. Problem was the motor in the Danfos 3way motorised valve. Replaced the top of the valve cost £50 have now got heating.
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Try fixfault.com to fix home heating systems.