SC 750 ST User Manual

Loading ...

Service Manual: SC750, SC800, SC 750 ST, SC800 ST

Form Number 56043150 Page 24

LCD

Display

Code

Blink

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.

Loading ...

Nilfisk SC 750 ST Heavy-Duty Cleaning

User Manual - Page 24