Help Fast charger stopped working

[Jason638]

A few days ago my adaptive fast charger stopped working for no apparent reason. Fast charging is still checked in the battery menu, but as soon as I plug it in, it goes grey. The charger works on my friends phone. Any help would be much appreciated. Thanks

 

[Silver Surfer]

Check that you haven't accidentally enabled power saving or ultra power saving modes.

I believe that doing that disables fast charging.