Vaillant Combi boiler
On a call out this morning to check a vaillant Combi boiler that has been dripping water from underneath.
On opening and checking boiler, I can clearly see this diverter valve spindle slowly dripping.
When this happens, boiler will loose pressure and flash error code , could be flashing F75.
Solution is to replace this diverter valve ASAP, because introducing fresh water into your system everyday is really not good for your heating system.
