BoilerFaultCodesYour boiler is operating normally and is currently busy providing heat to your radiators or hot water to your taps.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: CH or DHW being supplied.
What causes this fault?
The letter 'C' is not actually a fault, but a status indicator showing that your boiler is actively working to heat your home. It appears when the central heating cycle is engaged and the burner is firing to warm the water in your radiators. There is no physical failure occurring, and your system is performing exactly as intended.
This code is seen more frequently during the autumn and winter months when the heating is turned on more often to combat the cold weather.
DIY fix possible
Check if your thermostat is turned upCheck if a hot water tap is runningNo action is required as this is an operational status, not a fault
Find a Gas Safe engineer
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A boiler cover plan would cover faults like C — no call-out fees, no surprises.
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Ideal Elise H is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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