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Is there any diagnostic information I could provide with some simple instructions from you? As far as regular servicing goes I've not been with the house this boiler is in for long. Cheers, Geoff

Hi all, My biassi's temperature gauge stopped working some time ago. The hot water has got progressively colder over the last year or so and now I need some help! Can anybody tell me some likely causes. I asked the local gas man (renowned for ripping people off) and he said I need a...