Day In My Life as A Plumber, How to fix Vaillant boiler F23 Fault.

How to Fix Vaillant Boiler with F23 Fault code. Lack of circulation. In this video i go thru the 2 Items and Show how to rectify the Fault Using A method that Has always worked for me over the years.
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Видео Day In My Life as A Plumber, How to fix Vaillant boiler F23 Fault. канала Dr Pipe