Troubleshooting
Plug at the main switch (
-1S1
) connected?
No
Connect plug at the main switch
(chap. 8.4, page 79)
Yes
Main switch (
-1S1
) defective?
Yes
Replace main switch
(chap. 8.4, page 79)
No
Power cord with mains plug (
-X1
) defective?
Yes
Replace power cord with mains plug
(chap. 8.2, page 77)
No
Plug of the controller cable connected to the
socket
Interface Screen Board
of the controller
MB1 I/O-board (
-3N2
)?
No
Connect the plug of the controller cable to
the socket
Interface Screen Board
of the
controller MB1 I/O-board (chap. 8.8,
page 84)
Yes
Plug of the controller cable connected to the
controller display (-
3N1
)?
No
Connect the plug of the controller cable to
the controller display (chap. 8.9, page 85)
Yes
Temperature fuse (
-1F2)
is blown because of a
controller error?
Yes
Find and remove the cause of overtempera-
ture
Replace temperature fuse
(chap. 7.11, page 74)
No
Controller MB1 I/O-board (
-3N2
) and/or
controller display (
-3N1
) defective?
Yes
Replace controller MB1 I/O-board
and/or
controller display (chap. 8.9, page 85)
No
Line filter (
-1Z1
) defective?
Yes
Replace line filter (chap. 8.3, page 78)
20
Service Manual KBF (E5.2) 04-2015