Low
1E:1 on Viessmann Vitodens 222-W

Your boiler is correctly identifying that it is running on LPG rather than mains natural gas, confirming that the initial installation settings match your fuel supply.

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

Operation with LPG

Engineer required

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

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