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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Combi boiler problem
It's that time of year I suppose, although this one is about the hot
water, not the heating. It's an Ariston Microgenus. It seems to have developed an intermittent fault whereby sometimes when you turn on a tap the hot water just doesn't get hot. While the hot tap is running there seems to be a lot of churning coming from the boiler, which I assume is the pump running, but neither the fan nor the burners come on. The "fume sensor" LED comes on until you turn the tap off, whereupon the light goes out again. This fume sensor LED seems to be a mystery from the research I've done. The manual doesn't say what exactly it senses. And I don't see how it can be sensing "fumes" because the burners aren't lit! Any immediate ideas as to what would cause this to happen intermittently? Cheers! Martin |
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