January 2020
Part No. 1268514GT
Z
®
-33/18
4-13
Section 4 Fault Codes
Control System Fault Code Chart
(from s/n Z3318M-2669)
Error Source
Error Type
ID
Component
ID
Name
Cause
Effect
Solution
15
Foot Switch
21 Fault
Stuck ON
(on @ power up)
Platform
controlled
functions
disabled
*Release foot switch and
re-power.
*Check for power to PCON
at C28-6 with foot switch
not pressed.
*Replace footswitch.
28 Time Out
ON for > Timeout
Time
(default is 2 min)
16
Speed
Adjustment
Dial
12
VALUE TO
HIGH
Stuck ON
(on @ power up)
All functions
speeds are
reduced.
Check:
*5V DC (orange wire).
*Output. It should be
0-4.7V DC (WH/RD wire).
*Input at VCON at C35-3.
* R e p l a c e
r o t a r y
potentiometer (rheostat.)
17
AUX_PUMP
Auxiliary Pump
25
RESISTANCE
TOO HIGH
Pump motor
output is too low,
with respect
to PWM applied
Auxiliary
functions
disabled
*Check Fuse F1 (200A)
*Check for 24V DC to
AUX pump.
*If OK check pump
winding resistance.
*Replace AUX pump.
*Replace Left (slave) AC
controller
26
RESISTANCE
TOO LOW
Pump motor
output is too
high, with
respect
to PWM applied
Main Lift
Pump
and Drive
Disabled
*P- Could be shorted to
B-
*Check for 24V DC to
AUX pump.
*Replace AUX pump.
*Replace Left (slave) AC
motor controller.
18
Proportional
Relief Valve
16
VALUE AT
0V
Output Shorted
to B-
Primary Up,
Primary
Extend and
Secondary
Up are
disabled.
Verify coil shorted
"VALUE AT 0 VOLTS"
and all functions
disabled.
12
VALUE TOO
HIGH
Coil
Disconnected
Fault Code
Warning
Only
Make sure relief valve is
plugged in. If OK, check/
replace wiring (WH/
RD wire) coil and/or
hydraulic valve.
Summary of Contents for Genie Z-33/18
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