Control S ste
Service Manual – SC8000
– If the Recovery system is On, it transitions to the Wand mode.
– Pressing the Scrub Off switch turns the Scrub system off.
– Pressing the Scrub On switch has no effect.
– Pressing the Wand/Vacuum switch with the Scrub system off transitions the Recovery system between
Off and the Wand modes.
rou les ootin
Main Control oar ault Co es
Fault codes are organized by machine systems (functions). The red warning indicator or the yellow attention
indicator on the control panel will light, and the LCD will show a two-digit number and wrench icon. The
table below lists the main control board fault codes, and a description and brief comment for each fault code.
Note: C = Critical fault code, NC = Non-Critical fault code.
Code
Fault Description
Correction
00 C
Solution pump(s) over current
Check M4 main solution pump and M6 optional recycle
pump wiring for problems (on same fault line), M4 wire
colors (+GRN/BRN and - GRN/BLU) and M6 (+GRN/BRN
and - GRA/ORN).
Check pump motors for short circuits, replace as needed.
00 C
Extend scrub pump over current
Check Pump motor M6 wiring for problems (+ GRN/BLU and
- GRA/ORN). Same fault line used for main solution pump
M4 and M6.
01 C
Scrub brush pressure valve
solenoids over current
Check L5 down and L7 up pressure valve solenoid coils
(on same fault line) for wiring problems, L5 wire colors
(+ ORN and - WHT/VIO) and L7 ( + ORN and ORN/RED).
Check coil resistance. If less than 1.8 ohms, replace. Also
see main scrub on and right scrub brushes deck pressure
electrical ladder detail and specs.
02 C
Main power relay K1 coil over
current
Check K1 relay coil wiring for problems (+ ORN/GRN and
- BLU/GRN).
Check coil resistance. If less than 36 ohms, replace. Also
see main power distribution electrical ladder detail. (Spec
.29A @ 12V.) Replace as needed.
03 NC
Wand pump over current
Check Pump motor M8 wiring for problems (+ BLU and -
BLU/RED).
Check pump motor for short circuit, replace as needed.
Test current draw - 12.5A full load max @12V.
04 NC
Side sweep mist pump over
current
Check Pump motor M5 wiring for problems (+ BLU and -
YEL/BLK).
Test current draw 3.9A full load max. Note: 24V pump
operating @ 12V.
