Genie Z-30/20N Service Manual page 90

Section 5 • Fault Codes
FAULT CODE CHART
Programmer
Fault Code
Diagnostic Display
21
THROTTLE FAULT 1
THROTTLE FAULT 2
31
CONT DRVR OC
32
MAIN CONT WELDED
33
PRECHARGE FAULT
5 - 4
Condition Possible Causes
Open in wht/red wire
#32 at pin 14 or red/wht
wire #29 at pin 16 on
the motor controller
going from drive joystick
to pins 14 and 16 at the
Machine will not drive.
motor controller OR pin
14 is internally shorted
to power or ground OR
the potentiometer on
the drive joystick is
defective.
Pin 14 (wht/red #32) is
shorted to power or
ground OR the
Machine will not drive.
potentiometer on the
drive joystick is
defective.
Main contactor (PR1)
coil defective OR brake
Machine will not drive.
release relay CR5
defective.
Main contactor (PR1)
contacts stuck closed
OR grn wire at pin 17 on
motor controller shorted
Machine will not drive. to ground OR open in
motor armature wiring
OR motor controller has
an internal short to
ground.
External short between
B+ terminal on motor
Machine will not drive. controller and ground
OR motor controller is
defective.
Genie Z-30/20N
April 2004
REV A
Solution
Consult Genie
Industries Service
Department.
Consult Genie
Industries Service
Department.
Replace main contactor
PR1 or brake release
relay CR5 OR replace
the motor controller.
Consult Genie
Industries Service
Department.
Repair short between
B+ terminal on motor
controller and ground
OR replace motor
controller.
Note: Short can be on
any part of circuit
connected to the B+
terminal on the motor
controller.
Part No. 106373