Nilfisk-Advance 56108110 SC8000 48 LPG Service Manual page 56

Service Manual – SC8000
Code Fault Description
15A Circuit breaker CB3 over
27 C
current
20A Circuit breaker CB4 over
28 C
current
10A Circuit breaker CB5 over
29 C
current
Side sweep lift actuator over
30
current
31 NC Detergent pump #1 over current
32 NC Detergent pump #2 over current
33 C Engine hot fault
34 C Hydraulic temperature fault
35 C Low voltage fault (battery)
36 NC Service engine fault
37 C Low oil pressure fault
38 C Engine fault
39 NC
Correction
Control board has sensed open circuit fault for CB3 power
for side broom actuator motor (M7). Check for Violet wire
shorted to ground.
Control board has sensed open circuit fault for CB4 power
for hydraulic solenoid manifold coils (L4 - L11). Check for
Orange wire shorted to ground.
Control board has sensed open circuit fault for CB5 power
for hydraulic solenoid manifold coils (L1, L2 and L3) also
Pumps M4 and M6. Check for GRN/BRN wire shorted to
ground.
Three wires supply power to the M7 side broom lift
actuator motor; check wiring for problems. Wire colors
J3-4 BLU/RED (+) DN otherwise open, J3-5 WHT/RED
(-) UP otherwise open, J3-7 GRA/VIO common wire + UP
and - DN.
Test current draw full load 20A ± 2A max.
Check for frozen or binding lift linkage. Repair/replace as
needed.
Check #1 detergent pump M10 and #2 detergent pump
M11 wiring for problems, #1 pump wire colors (+RED/WHT
and - RED/BLU), #2 (+ BLK/YEL and - BLK/RED).
Check pump motors for short circuit replace as needed.
See pump #1
Coolant temperature high - causes engine fault, sets on
diesel machine only.
Sets when hydraulic oil temperature exceeds 220 F for 15
seconds.
One of the red display panel warning indicator lights. See the
explanation for the warning icon in the
arnin is la s section.
LPG engine (Kubota 1.6) only, sets when ECM activates
MIL output - could be for many different reasons. See the
n ine S ste section for the list of engine codes
and process for reading (extracting) codes.
Diesel only - causes engine fault to set. The red warning
indicator will light and the LCD will display the Low Oil
Pressure Icon.
Occurs if engine temperature too high (diesel), oil pressure
low (diesel), or engine run has changed to ignition inhibit
and key is on (LPG). Note: Engines will shut down. See the
corresponding n ine section for a list of engine codes and
how to read (extract) the codes.
be replaced. Note: Only activates when oil temperature is
above 100 degrees F (this prevents false signal upon cold
engine start-up).
Control S ste
eneral n or ation