Control System
27
Service Manual – SC1500
Display
Code
Fault Description
Conditions Needed to Set the Fault Code
52
Scrub Deck Actuator position fault
The measured current was greater than or equal to the
minimum threshold value while the deck was moving, but the
software timed out looking for the new position (never saw the
actuator switch states read the target values).
62
Solution Solenoid driver on
The measured current was above the minimum value while the
Solution Solenoid driver should have been off.
63
Brush Contactor (K2) driver stuck
on
The measured current was above the minimum value while the
Brush Contactor driver should have been off.
64
Vacuum Contactor (SSR1) driver
stuck on
The measured current was above the minimum value while the
Vacuum Contactor driver should have been off.
65
Detergent Pump driver stuck on
The measured current was above the minimum value while the
Detergent Pump driver should have been off.
70
On-board Battery charger fault
An error has been generated via the serial communications
between the charger and the A1 Control Board due to an
incorrect charging profile code being repeatedly sent by the
charger, or the bit timing being severely out of spec.
System Disabled by Fault Codes
Disable System
Flash Indicator
Display Code
Fault Description
Disable Detergent
Disable Solution
Disable Brush
Motor
Disable Recovery
V
acuum Motor
Scrub Deck
Actuator Disable
Detergent Indicator
Solution Indicator
Brush Motor
Indicator
V
acuum Indicator
03
Speed Control fault
x
04
Scrub Deck Actuator overload
x
x
x
x
x
08
Solution Solenoid overload
x
x
x
09
Vacuum Contactor (SSR1) coil
overload
x
x
x
x
x
x
10
Brush Contactor (K2) coil
overload
x
x
x
x
x
11
Detergent Pump overload
x
x
21
Detergent Pump driver fault
x
x
24
Deck Actuator driver fault
x
x
x
x
30
Solution Solenoid open
x
x
x
32
Scrub Deck Actuator open
x
x
x
x
35
Brush Contactor (K2) coil open
x
x
x
x
x
36
Vacuum Contactor (SSR1) coil
open
x
x
x
x
x
x
37
Detergent Pump open
x
x
