Low
P.3 on Vaillant ecoTEC

Your boiler is currently initiating its start-up sequence and is temporarily pausing to check that the pump is moving water correctly before firing the burner.

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

not available

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.0View →P.1View →P.2View →

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