Low
P.2 on Vaillant ecoMAX 635

Your boiler is currently running a brief system test to ensure it is operating at its lowest power setting after starting up.

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.

What the manual says

Manufacturer manual

Test program used when the unit runs with minimum gas consumption after successful ignition

From this model's manual
Verified against the Vaillant Ecomax 613 installation & service manual, page 50.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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.3View →

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