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S.57 on Vaillant ecoTEC plus 937 VUI GB 376/5-5

Your boiler is temporarily pausing its operation to allow internal parts to cool down or stabilize, which is a normal safety feature to prevent overheating.

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

Waiting period, comfort safety mode

From this model's manual
Verified against the Vaillant/Vaillant Ecotec Plus 937 07 2012 Isim 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.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

S.51View →S.52View →S.53View →

All 72 fault codes on the ecoTEC plus 937 VUI GB 376/5-5

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.35F.42F.49F.52F.53F.54F.56F.57F.61F.62F.63F.64F.65F.67F.68F.70F.71F.72F.73F.74F.75F.76F.77F.78F.80F.81F.83F.84F.85F.90F.91F.92F.93S.04S.30S.31S.32S.34S.39S.40S.41S.42S.46S.53S.54S.58S.61S.62S.63S.76S.96S.97S.98

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