BoilerFaultCodes.com
C Low Information

Your boiler is operating normally and is currently heating either your radiators or your hot water tank.

Monitor it

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?

This is not a fault, but rather a status indicator showing that your boiler is working exactly as it should. It signifies that the internal burner is lit because there is an active demand for heat from your thermostat or hot water programmer.

You will see this code more frequently during the autumn and winter months when your central heating is scheduled to run more often.

Typical repair cost £0 (including labour)

DIY fix possible

This fault may be fixable without an engineer. Check your manual first.

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Protect yourself from future repair bills

A boiler cover plan would cover faults like C — no call-out fees, no surprises.

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