Low
S.58 on Vaillant ecoTEC exclusive 627 VU 256/5-7

Your boiler has detected unusual airflow patterns, likely caused by strong winds outside, and has temporarily limited its heat output to keep the system stable and quiet.

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

Burner modulation limitation / Modulation limitation due to noise/wind

From this model's manual
Verified against the Vaillant/Vaillant Vaillantpro 0020193966 04 Ecotec Exclusive System Installation I 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

Check for any external obstructions near the flue terminal outsideMonitor the boiler to see if the code clears once wind conditions subsidePerform a system reset if the boiler remains in a limited state after weather improves

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Related fault codes

F.28View →F.29View →S.57View →

All 72 fault codes on the ecoTEC exclusive 627 VU 256/5-7

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

F.00F.01F.02F.03F.10F.11F.12F.13F.20F.22F.23F.24F.25F.26F.27F.28F.29F.32F.33F.35F.42F.49F.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.94S.34S.36S.37S.39S.40S.41S.42S.46S.53S.54S.55S.56S.57S.59S.76S.86S.88S.92S.93S.96S.97S.98S.99

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