Harvia SENTIOTEC Pro B2 Instructions De Montage Et Mode D'emploi page 59

Instructions for installation and use p. 29/30
12.2. Fuses
Fuses for light, fan/power expansion and electronics as well as a spare fuse are
located in the sauna control unit's connection area.
These are 1A time delay micro fuses.
They can be ordered using the item number PRO-FUSE.
Light Electronics Fan/power expansion Spare fuse
In order to replace the fuse, pull the fuse link straight out and insert the new fuse.
EN