Low Information
2S01 on Ideal Logic Max Combi

Your boiler is notifying you that it has been configured to be controlled by a single external timer or thermostat wire rather than a smart system.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

1x Switched Live Mode selected.

What causes this fault?

This code appears because the boiler has been electronically told to look for a single basic control wire to turn the heating on and off. It often happens after a power cut, a system reset, or if a new smart thermostat has been installed incorrectly, causing the boiler's internal settings to mismatch the physical wiring. Rather than a broken part, it is simply the boiler asking for clarification on how it should receive its instructions.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

L2View →F2View →

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