BoilerFaultCodes.com
0L Low Information

Your boiler is currently trying to light the flame to start provide heating or hot water, which is a normal part of its startup sequence.

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: Unit is in ignition phase

What causes this fault?

This code appears when the boiler is in the middle of its normal starting sequence and is trying to establish a flame. It is caused by the control board sending a spark to the burner to ignite the gas required for heating or hot water. If the code stays on the screen without the boiler firing up, it usually means the system is struggling to sense the flame or the gas is not reaching the burner efficiently.

Typical repair cost £0-120 (including labour)

DIY fix possible

Wait up to 60 seconds to see if the code disappears once the boiler fires upCheck that your gas supply is turned on at the meterIf the code persists or cycles repeatedly without lighting, try resetting the boiler

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