Viessmann Vitodens Tec Fault Codes
Combi Natural GasLPG 19-35 kW 2012-2015 Discontinued
GC Numbers: 47-819-2447-819-25
Replaced by: Vitodens 100-W
The fault code is already on your display
Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →
Most common fault codes
A9 b0 b1
Your boiler is having trouble 'talking' to its internal pump, which means it cannot flow water around the system to heat your home.
Gas Safe engineer required · £180-£450
Your boiler has paused its initial setup process because the automatic air-venting sequence has not finished successfully.
May be DIY safe · £0-90
Your boiler is currently stuck in an incomplete setup mode, meaning the installation process wasn't fully finished or the system hasn't been properly coded.
Gas Safe engineer required · £80-160
All 8 fault codes
Viessmann Vitodens Tec is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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