BoilerFaultCodesWhat the manual says
Manufacturer manualComfort protection: Minimum load, loss of flame. Comfort protection mode for flame loss at minimum load is activated.
From this model's manual
Verified against the Vaillant/Vaillant Ecotec Pro 30 installation & service manual.
What causes this fault?
This fault occurs when the boiler struggles to maintain a steady flame while running at its lowest power level. The most common cause is a dirty or worn-out sensing probe that can no longer accurately detect the fire, or an incorrect mix of gas and air preventing a consistent burn.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Related fault codes
All 148 fault codes on the ecoTEC pro 28 H combi A VUW GB 286/5-3 A
Seeing a different code? Every code this model can display, in one place.
Communication faultD.000D.001D.002D.003D.004D.005D.006D.007D.008D.009D.010D.011D.012D.013D.014D.015D.016D.017D.018D.019D.020D.022D.023D.025D.026D.027D.028D.033D.034D.035D.036D.039D.040D.041D.044D.046D.047D.050D.051D.058D.060D.061D.064D.065D.067D.068D.069D.070D.071D.072D.073D.074D.075D.076D.077D.078D.080D.081D.082D.083D.084D.088D.090D.091D.092D.093D.094D.095D.096F.00F.01F.10F.11F.20F.22F.23F.24F.25F.26F.27F.28F.29F.32F.49F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.77F.78F.83F.84F.85P.00P.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.41S.42S.53S.54S.57S.58S.76S.96S.97S.98