BoilerFaultCodesWhat the manual says
Manufacturer manualModulation limitation due to noise / wind error
What causes this fault?
This code occurs when high winds or extreme weather conditions interfere with the way the flame burns inside the boiler. The system detects that the airflow is inconsistent or that the burner is becoming too noisy, so it automatically lowers its power output to stabilize itself. This is a protective measure to keep the boiler running safely despite the external environmental pressure.
This code is more common during the autumn and winter months when high winds and stormy weather are more likely to affect the flue terminal.
DIY fix possible
Check if there are any obvious obstructions near the flue terminal outsideMonitor the boiler as it should automatically return to normal operation when wind conditions improvePerform a reset if the boiler remains in a limited state after wind has died down
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Related fault codes
All 101 fault codes on the ecoTEC Pro / ecoTEC Plus
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