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    Biasi 24S safety thermostat tripping on CH

    Most of quote was not for the boiler (which alone makes up a small fraction of the total figure c. 1k-1.3k ex VAT depending on make and size as far as I can tell). Bulk of costs arise, I am told, due to need to fit a new wider diamter pipe from meter to boiler (its a terraced house so much...
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    Biasi 24S safety thermostat tripping on CH

    Tony thanks again. I will bring in some professional help (not of course to imply that you are not professional!). I have grown rather fond of my troublesome new friend and spending c. £6k with VAT for a replacement so soon after being introduced just seems rude and somewhat pricey. Out of...
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    Biasi 24S safety thermostat tripping on CH

    Tony, It trips while the burner is operating not after it has shut down. If the latter, I understand that this could indicate a scaled main heat exchanger. Mind you having seen the state of the hot water heat exchanger, I would not be surprised if the main one was also suffering from scaling...
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    Biasi 24S safety thermostat tripping on CH

    Thanks for the thoughts. Annoyingly the temperature gauge on the central heating temperature and pressure gauge is not working. Most of the time it reads zero other than when the temperature spikes when it rises be a few degrees before the safety thermostat trips. This makes it hard for me to...
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    Biasi 24S safety thermostat tripping on CH

    I have recently taken on the ownership of a somewhat aged (and troublesome) Biasi 24s (Year 2000). Shortly after getting to know each other the boiler started overheating and tripping the safety thermostat on the DHW side while blowing steam out the top like a whale. This was rectified by...
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