Nilfisk SC6500 Mode D'emploi page 27

A - ENGLISH
GENERAL MACHINE TROUBLESHOOTING
ERROR CODE DISPLAY
Any error codes detected by A2 Control Board
Assembly will be displayed on the control panel
display as they occur. If more than one error exists,
the display will sequence through the error codes at
one-second intervals. The error (A) will display as a
mechanical wrench symbol followed by a two-
digit code. For example, 29 as shown in the
adjacent drawing would be an open vacuum motor
error.
Display
Error/Fault Description
Code
Scrub deck sense R2 resistor fault
01
Speed control fault
03
Scrub motor overload
Note that some models use one, two or three scrub
04
motors.
Left brush motor contactor coil overload
Contactor K4 is for the left motor on the three-motor
05
decks.
Center brush motor contactor coil overload
Contactor K3 is for the center motor on three-motor
06
decks. K3 is for the left motor on two-motor decks.
Right brush motor contactor coil overload
Contactor K2 is for the right motor on two- or three-motor
07
decks. K2 is the only contactor on single-motor decks.
Scrub deck actuator overload
08
Vacuum motor overload
09
K1 Vacuum motor contactor coil overload.
10
Squeegee actuator overload
11
L1 Solution solenoid overload
12
Solution control pump overload
13
K6 Side broom motor contactor coil overload
16
Side broom actuator overload
17
K5 Auxiliary contactor coil overload
18
Back-up alarm overload
19
Horn output fault
20
A - 26
INSTRUCTIONS FOR USE
SC6500 - 56091145
0.2
A
29
Display
Error/Fault Description
Code
Scrub motor open
21
Left brush motor contactor coil open
22
Left brush motor contactor coil short to ground
23
Center brush motor contactor coil open
24
Center brush motor contactor coil short to ground
25
Right brush motor contactor coil open
26
Right brush motor contactor coil short to ground
27
Scrub deck actuator open
28
Vacuum motor open
29
Vacuum motor contactor coil open
30
K1 Vacuum motor contactor coil short to ground
31
Squeegee actuator open
32
L1 Solution solenoid open
33
L1 Solution solenoid short to ground
34
Solution control pump open
35
Side broom motor contactor coil open
36
K6 Side broom motor contactor coil short to ground
37
Side broom actuator motor open
38
Auxiliary motor contactor coil open
39
K5 Auxiliary motor contactor coil short to ground
40
Back-up alarm open
41
Back-up alarm short to ground
42
12/2014