‍Ideal Logic…

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‍The Ideal Logic is modern low budget, high efficiency condensing gas boiler launched in around 2010. It comes in combi, ‘heat only’ and ’system boiler’ formats. It has an aluminium heat exchanger and is fully modulating, meaning the heat output adjusts up or down automatically to match the heat load. It’s been a very successful boiler for Ideal but now their guarantees are beginning to expire, I’m getting a trickle of calls to fix them. There seems to be two common faults.

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‍The first is the sump at the bottom which collects the flue gas and also the liquid condensate all condensing boilers produce when running, develops a crack and a minor water leak. The water leaking out is actually condensate. To fix this, a new sump needs to be fitted which although quite a substantial repair, is reasonably quick and easy to carry out.

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‍The second fault I’ve seen is the boiler emitting a loud and penetrating monotone ‘singing’ noise after running for a while. This can be heard both inside the house, and outside in the street from the flue terminal. This turns out to be a gas control valve fault and as the gas valve is factory sealed and cannot be adjusted, a new gas valve is required. I fixed this fault for a customer on a new housing estate in Reading and he said as he walks his dog, he notices half a dozen other houses on the estate with boilers making the same noise as the noise as his used to. Here is a video of this boiler, with the harsh monotone singing clearly audible on the soundtrack.

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‍Other common faults are: 

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‍Errors L2 and F2:

‍Error messages are displayed on the user screen. L2 is “Ignition lockout”, meaning it is failing to light. F2 is “flame failure”, meaning the boiler actually went out whilst running. Usual causes are a frozen condensate drain in freezing weather, or the electrodes need cleaning with wire wool or emery cloth. Some sort of scale forms on them with age, apparently. 

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‍Burner head:
If L2 / F2 are accompanied by a low ‘droning’ noise, there are rivets inside the burner head which fail and cause the drone. The burner head will rattle if shaken! A new burner head fixes it.

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‍Ignition spark generator:
The ignition spark generator is also noted for failing and causing L2 (with no F2).

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‍Flow turbine:

‍On a combi there is a flow turbine which senses when a hot tap has been turned ON and lights the boiler. These fail apparently, although I’ve yet to see this particular fault myself. When the flow turbine fails, the boiler won’t light when hot water is required even though the central heating still works.

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‍If your Ideal Logic needs repairing or you need advice, text me on 07866 766364.

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‍Mike

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