BoilerFaultCodesWhat the manual says
Manufacturer manualControl mode without room influence - Room temperature sensor for heating circuit 3 not available
From this model's manual
Verified against the Viessmann/Viessmann Vitodens 100 W Wb1a installation & service manual.
DIY fix possible
Turn the boiler off at its on/off switch, wait 2 minutes, then switch it back on and check whether the code clears.Check the room thermostat or room sensor for heating circuit 3 is switched on, and replace its batteries if it runs on them.Look at the wiring or plug connection between the room sensor and the wall, and make sure it is secure, without damage, and not loose. Do not open the boiler casing.
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Related fault codes
All 170 fault codes on the Vitodens 200-W B2KE-32
Seeing a different code? Every code this model can display, in one place.
F.7F.8F.9F.10F.11F.12F.13F.14F.15F.16F.29F.30F.49F.50F.57F.58F.59F.62F.63F.65F.67F.68F.69F.70F.71F.72F.73F.74F.77F.89F.91F.92F.93F.94F.100F.104F.142F.160F.161F.162F.163F.182F.183F.184F.185F.299F.342F.345F.346F.348F.349F.350F.351F.352F.353F.354F.355F.357F.359F.361F.365F.366F.367F.368F.369F.370F.372F.373F.375F.377F.378F.380F.381F.382F.383F.384F.385F.386F.387F.388F.395F.396F.399F.400F.401F.402F.403F.404F.405F.406F.408F.410F.416F.417F.418F.425F.426F.427F.428F.429F.430F.432F.433F.436F.437F.440F.441F.442F.443F.444F.445F.446F.447F.448F.449F.450F.451F.452F.453F.454F.455F.456F.457F.458F.461F.462F.463F.464F.467F.468F.471F.473F.474F.517F.527F.528F.530F.538F.539F.540F.542F.543F.544F.545F.546F.547F.574F.575F.576F.577F.578F.579F.581F.582F.666F.667F.668F.669F.670F.671F.672F.673F.682F.683F.684I.55I.56I.57I.59