Nilfisk-Advance Advance SC750 ST

Service Manual: SC750, SC800, SC 750 ST, SC800 ST
Form Number 56043150 Page 22
LCD
Display
Code
ST
Blink
Code
Code
Denion
Explanaon / Code Seng Condions / Flash Indicator
/ Disables / Check
32 2,5 Scrub Deck Li Actuator
Circuit Open
The Main Machine Controller is trying to move the actua-
tor but it is not sensing any current ow. (Senses <= 100
m Amps for 5 seconds).
Check Actuator, wiring.
33 3,1 Vacuum Motor Circuit
Open
The Main Machine Controller has energized the Vacuum
Contactor but it is not sensing any current ow through
the vacuum motor ground circuit for at least 5 seconds.
(Senses<= 3 Amps for 5 second and Fault Code 36 is not
acve)
Check motor, wiring.
35 3,2 Brush Contactor Coil
Circuit Open
The Main Machine Controller has aempted to energize
the Brush Contactor but it is not seeing any current ow.
(Senses <= 20 m Amps for 5 seconds).
Check for open Contactor winding, wiring.
36 3,3 Vacuum Contactor Coil
Circuit Open
The Main Machine Controller has aempted to energize
the Vacuum Contactor but it is not seeing any current
ow. if (Senses <= 20 m Amps for 5 seconds)
Check for open Contactor winding, wiring.
37 (N/A) Detergent Pump Circuit
Open
The Main Machine Controller has energized the deter-
gent pump but it is not sensing any current ow. (Senses
<= 30 m Amps for 5 seconds).
Check for open pump winding, wiring.
38 (N/A) Brush Remove Contactor
Coil Circuit Open
The Main Machine Controller has aempted to energize
the Brush Remove Contactor but it is not seeing any cur-
rent ow. (Senses <= 20 m Amps for 5 seconds)
Check for open Contactor winding, wiring.
60 3,4 Brush Motor Contactor
Stuck Closed
The Main Machine Controller is sensing current ow
through the Brush Motor ground circuit when it has not
energized the Brush Motor Contactor (Senses >= 4 Amps
for 5 seconds and Fault Code 63 is not acve)
Check for “welded” contacts.
61 3,5 Vacuum Motor Contactor
Stuck Closed
The Main Machine Controller is sensing current ow
through the Vacuum Motor ground circuit when it has
not energized the Vacuum Motor Contactor (Senses >=
3 Amps for 5 seconds and Fault Code 64 and 65 are not
acve)
Check for “welded” contacts.