High
S.32 on Vaillant ecoTEC Pro 28

Your boiler is temporarily pausing because the fan is having trouble reaching or maintaining the correct speed to start the ignition process safely.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Waiting time deviation: Fan speed. The waiting period for the fan start-up is activated.

From this model's manual
Verified against the Vaillant/Vaillant Ecotec Pro 30 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.

What causes this fault?

This fault occurs when the boiler's control system detects that the fan isn't spinning at the precise speed required to safely clear exhaust gases and bring in fresh air. It is often caused by a failing fan motor, a buildup of debris inside the fan, or a communication issue where the main circuit board cannot correctly read the fan's speed. Because the boiler cannot guarantee a safe combustion process, it temporarily pauses operation until the fan speed stabilizes.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

F.32View →S.31View →

All 148 fault codes on the ecoTEC Pro 28

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.34S.39S.41S.42S.46S.53S.54S.57S.58S.76S.96S.97S.98

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