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hot water not working !?

I have a prororma 24 the heating is fine but the hot water will not fire up at all, does anyone know the reason for this ? as i dont want to call out an engineer who is going to charge me the earth..

Thanks

Andy
April 2010
ProrormaPrororma 24Heating, Home Heating SystemsHeating System Engineer
you probably need a new diaphragm

Ian
April 2010

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Prororma 24 - No Hot Water? | Help & Advice