Skyjack SJ12 E Service Manual page 135

Display Module
Code Description
186-M2 ERR WAIT MOT.P STILL
187-CTRL ERR LIFT+LOWER
188-CTRL ERR INT. CANBUSKO
189-SEQUENCE PUMP INC START
PUMP VMN NOT
190-CTRL ERR
OK
PUMP VACC NOT
191-A1 ERR
OK
SJ12 E, SJ16 E, SJ20 E
Cause
If DC PUMP option is set to ON, before
switching on the LC the software expects
the voltage on -P output to be at a
determined steady state value. If the
voltage is different, it could be due to the
fact that the motor connected to -P is not
still. For this reason, the software waits
30 seconds for the voltage to settle at
a steady state value (and for the pump
motor to be still).
After this time, the software assumes that
the problem is not due to the fact that
the pump motor is not still, and rises the
PUMP VMN
NOT OK alarm.
Both the LIFT and LOWER requests are
active at the same time.
The internal communication between the
two microcontrollers is not working.
Incorrect starting sequence for the pump
section. Possible reasons for this alarm
are:
A lift demand active at key-on.
▪
A lift demand active with tiller or
▪
seat input inactive.
If DC PUMP option is set to ON, before
switching on the LC, the voltage on
-P output is expected to be at a given
steady state value. If the voltage is
different, it could be due to the fact
that the pump motor is not still. For this
reason, the software waits 30 seconds
for the voltage to settle at a steady
state value (and for the pump motor to
be still). After this interval, the software
assumes that the problem is not due to
the fact that the pump motor is not still,
and rises the PUMP VMN
NOT OK alarm.
At start up or before any lift/lower
request, the joystick analogue reference
is above the minimum programmed
value.
Section 5 – Procedures
Troubleshooting
If the motor connected to -P is still
moving, just wait for it to be still.
If nothing is wrong with the pump
motor, replace the controller.
Check the joystick and its state.
Check the joystick state readings by
the TESTER function. Replace the
joystick.
Replace the controller.
Check the joystick and its state.
Replace the joystick.
Check the motor connections. Check
the motor power cables.
Check the motor leakage to the truck
frame. Replace the controller.
Repeat the acquiring procedure of
MIN LIFT and MAX LIFT. Check the
joystick and its state.
Check the joystick readings by the
TESTER function.
Replace the joystick.
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