Unknown
bb on Viessmann Vitodens 242-F FB2B

Viessmann Vitodens 242-F FB2B fault code bb

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

What the manual says

Manufacturer manual

Mixer regulates to 20 °C flow temperature. - Communication error, extension kit for heating circuit 3 (with mixer)

From this model's manual
Verified against the Viessmann/Viessmann Vitodens 242 F Fb2b 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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All 89 fault codes on the Vitodens 242-F FB2B

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

0A0b0C0d0F4C9A9C9E9F101820283038404448505158599294A0A1A2A3A4A6A7A8A9b0b1b4b5b7b8bAbCbdbEbFC1C2C3C4C5CdCFd6d7d8dAdbdCdddEdFE0E1E2E3E4E5E6E7E8EAEbECEdEEEFF0F1F2F3F7F8F9FAFCFdFEFF

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