Mec SE Series - Page 45

“SE Series” Service and Parts ManualMarch 2017
Page 2-6
FAULT CODES
FAULT DESCRIPTION
MODELS
69
High Neutral Current Fault
All Models
SOLUTIONS
71
Motor Controller Main Contactor Fault
All Models
70
Steer Input Out of Range
All Models
(Steering Input Out of Range: There is an
appropriate voltage at the steering input of
the ZAPI motor controller. The ZAPI may
need to be "trained" for the three steering
voltages (on Differential Steered Machines)
72
Motor Controller Over Voltage Fault
All Models
(Motor Controller Over Voltage Fault:
Check battery voltage and make sure the
battery charger is not on. Then cycle
(Motor Controller Motor Fault:
Check connections to the motors. Cycle
power to the lift and if that does not
resolve the issue, replace the Motor
Controller.)
74
Motor Controller Motor Fault
All Models
(High Neutral Current: The MC is sensing
current in the motors when there should
not be. This could occur anytime the MC
thinks the brakes are on and the motors
are still turning. This message sometimes
comes just before other faults but should
be ignored in those cases.
Or the steering voltage from the ECU was
at some point outsid
e of the range that
was recorded during the "training" session.
Retrain the ZAPI and/or check for
fluctuating voltages due to loose wires,
etc.)
1. (Check the main contactor and wiring)
2. (Check the drive motor and wiring)
3. (Check the drive motor controller and
wiring.)
(Remark: To make sure the drive motor
is good before - change the drive motor
controller, or the motor controller will be
damaged again)
power to the lift. If that does not resolve
the issue, try replacin
g the Motor
Controller.)
73 Motor Controller Thermal Cutback Fault
All Models
(Motor Controller Thermal Cutback Fault:
Drive or Lift Motor may be overheating.
Let the lift cool down. If that does not help
cycle power to reset the Motor Controller.
If that doesn't resolve th
e issue, replace
the Motor Controller.)