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I have a Honeywell ST699 boiler. There seem to be two problems which may be unrelated. Firstly the central heating is fine, but if the room temperature rises above that on the wall thermostat the boiler shuts down and has to be reset.
Secondly it won't heat the hot water at all. The boiler won't even fire if I try hot water independently and if I try hot water and heating together the hot water still doesn't warm up. Anyone any ideas? Thanks
Secondly it won't heat the hot water at all. The boiler won't even fire if I try hot water independently and if I try hot water and heating together the hot water still doesn't warm up. Anyone any ideas? Thanks
