What the manual says
Manufacturer manualFan over run
From this model's manual
Verified against the Vaillant/Vaillant Ecotec Plus Pro 839592 00 2004 installation & service manual.
DIY fix possible
Wait a few minutes as this is usually a normal operational status message, not an error.Check if the boiler returns to normal standby or heating mode automatically.If the code stays permanently and locks out the boiler, try resetting it once.
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Related fault codes
All 119 fault codes on the ecoTEC plus 612 VU GB 126/3-5
Seeing a different code? Every code this model can display, in one place.
d.00d.01d.02d.03d.05d.06d.07d.08d.09d.10d.11d.17d.18d.19d.22d.23d.25d.26d.30d.33d.34d.35d.36d.40d.41d.44d.47d.50d.51d.60d.61d.64d.65d.67d.68d.69d.70d.71d.72d.73d.75d.76d.77d.78d.80d.81d.82d.83d.84d.90d.91d.93d.97F.00F.01F.02F.10F.11F.13F.20F.22F.23F.24F.27F.28F.29F.32F.60F.61F.62F.63F.64F.65F.70F.71F.72F.73F.74F.75F.76P.1P.2P.3P.4P.5P.6S.00S.01S.02S.03S.04S.05S.07S.08S.10S.11S.13S.14S.15S.16S.17S.20S.21S.22S.23S.24S.25S.26S.27S.28S.30S.31S.32S.34S.36S.53S.54S.76