Low
P.01 on Vaillant ecoTEC Plus 826

Your boiler is currently running a brief, automated internal test to check its maximum heating capacity and is not showing a fault.

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

Check programme: Maximum load check programme

Engineer required

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

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Related fault codes

P.02View →

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