Buderus boiler’s expansion tank is faulty

Hello All,

The expansion tank of my one-year-old Buderus boiler is overflowing from last two days. I do not know the actual reason but I am also getting the hot water. Someone please tell me that what should I do to make the boiler work again properly.

Looking for the sincere views


Hi Craig,

If the expansion tank of your Buderus boiler is leaking water towards the outside then, it might be due to the faulty ballcock, which needs a washer replacement. However primarily, examine to see that if the water is cold or hot. In case it is hot, take it seriously, as it could be something extremely serious. It is as simple & easy as replacing a ballcock washer nevertheless, if you notice that cylinder is faulty then, it is better to seek advice from a boiler engineer.