I have a Roth touchline floor heating system in my apartment. It stopped working and the fuse light is on (red). I read the manual and this indicates that the fuse needs to be replaced. Fuse type according to manual is "2AT". But there's no explanation on where it is located (my guess is that it is in the power supply). In the picture you can see the unmounted unit to the right, and the power supply to the left.
Any clues?
Picture attached