Low
P.11 on Vaillant ecoTEC plus aquaPLUS

Your boiler is currently running a setup program to test its gas pressure and is not in its normal operating mode.

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

Setting-up program: Natural Gas (G20) mid setting point pressure

From this model's manual
Verified against the Vaillant/Vaillant Ecotec Plus Aquaplus 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 for the program to finish automaticallyPress the 'i' button to monitor progressIf it persists, turn the boiler off and on again to reset it

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Related fault codes

P.12View →P.13View →

All 106 fault codes on the ecoTEC plus aquaPLUS

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

d.00d.01d.02d.03d.04d.05d.06d.08d.10d.11d.12d.13d.21d.22d.23d.24d.25d.30d.33d.34d.35d.37d.40d.41d.50d.60d.61d.64d.65d.67d.68d.69d.71d.72d.76d.79d.80d.81d.82d.83F.00F.01F.02F.03F.10F.11F.12F.13F.20F.22F.23F.24F.27F.28F.29F.32F.33F.37F.41F.42F.43F.60F.61F.62F.63F.64F.65F.66F.67P.12P.13S.00S.01S.02S.03S.4S.04S.05S.06S.07S.08S.10S.11S.13S.14S.15S.16S.17S.20S.21S.23S.24S.25S.26S.27S.28S.30S.31S.32S.33S.34S.36S.39S.53S.54

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