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S.76 on Vaillant ecoTEC plus 832 VUW 246/5-5 R6

Your boiler is reminding you that the internal water pressure has dropped and needs to be topped 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

Servicemessage:Check waterpressure: Aservicemessageisactivated.Checkthewaterpressure.

From this model's manual
Verified against the Vaillant/Vaillant Ecotec Pro Ecotec Plus Regular 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

Locate the filling loop underneath your boiler or near the pipes.Open the valves slowly to let water into the system until the pressure gauge reads between 1.0 and 1.5 bar.Close both valves tightly and check the gauge holds steady.

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Related fault codes

F.22View →

All 175 fault codes on the ecoTEC plus 832 VUW 246/5-5 R6

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

D.000D.001D.002D.003D.004D.005D.006D.008D.009D.010D.011D.012D.013D.015D.016D.017D.018D.020D.022D.023D.025D.026D.027D.028D.029D.033D.034D.035D.036D.039D.040D.041D.047D.058D.060D.061D.064D.065D.067D.068D.069D.070D.071D.072D.073D.074D.075D.077D.078D.080D.081D.082D.083D.084D.088D.090D.091D.092D.093D.094D.095D.096D.098F.00F.01F.02F.03F.10F.11F.12F.13F.20F.22F.23F.24F.25F.26F.27F.28F.29F.32F.42F.49F.52F.53F.54F.55F.56F.57F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.77F.78F.80F.81F.82F.83F.84F.85F.90F.91F.92F.93F.94P.00P.0P.01P.02P.06S.00S.01S.02S.03S.04S.05S.06S.07S.08S.10S.11S.13S.14S.15S.16S.17S.20S.21S.22S.23S.24S.25S.26S.27S.28S.30S.31S.32S.34S.39S.40S.41S.42S.46S.53S.54S.57S.58S.61S.62S.63S.88S.92S.93S.96S.97S.98S.99T.02T.03T.04T.05T.06T.08

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