Low
P.000 on Vaillant ecoTEC plus 940 VUI 30/40CS/1-5

Your boiler is simply running its automatic air-removal cycle after being filled with water or having maintenance performed.

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

Purge programme

From this model's manual
Verified against the Vaillant/Vaillant Vaillantpro 0020308121 05 Ecotecplus Storage Combi Installation installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Wait a few minutes for the automatic purge programme to finish on its own.Check your system pressure gauge to ensure it sits between 1.0 and 1.5 bar.If the code persists, simply reset the boiler.

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Related fault codes

P.01View →P.02View →S.02View →

All 125 fault codes on the ecoTEC plus 940 VUI 30/40CS/1-5

Seeing a different code? Every code this model can display, in one place.

194F.000F.001F.002F.003F.010F.011F.012F.013F.020F.022F.023F.024F.025F.027F.028F.029F.032F.035F.040F.042F.044F.047F.049F.057F.061F.062F.063F.064F.065F.067F.068F.070F.071F.072F.074F.075F.076F.077F.078F.080F.081F.083F.084F.085F.087F.088F.089F.090F.092F.095F.096F.097F.105F.194F.195F.196F.317F.318F.320F.321F.322F.323F.324F.325F.326F.327F.330F.334F.336F.337F.338F.342F.343F.344F.347F.363F.707F.905I.003I.020I.144L.016L.022L.025L.032L.095L.096L.097L.105L.144L.194L.195L.196L.319L.320L.322L.343N.013N.027N.032N.089N.095N.096N.097N.100N.144N.194N.270N.317N.319N.324N.343P.001P.003P.008P.021T.001T.002T.003T.004T.005T.006T.007

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