Tuttnauer EA - Howto Change the Cartridge Fuse

25. EKA ONLY - Pump and valve always ON or OFF
e Check the S.S.R2 in the electric box.
e Check if TP 18 is in 0.0V if on and 5.0V if off, if yes replace PREDG.
If not replace the AJUNC3 board.
26. EKA - Pump is always on, valve is off
e The problem is in the pump or in SSR2 located in the electric box.
7.2 HOW TO CHANGE THE CARTRIDGE FUSE
Caution
ZN Make sure, the electrical power cord is disconnected!
Use a screwdriver to unlock the fuseholder cover by turning it counter clockwise a little,
and pull it out.
Insert a new Cartridge into the holder and turn the cover clockwise until locked.
Ensure the correct fuse is installed as marked!
The bottom two protects line and Neutral
Fuse ISA type T5 x 20
or Fuse 10A type T5 x 20
The top one protects the air pump
Fuse 1.2 A type T 5x20.
39