January 2020
Part No. 1268514GT
Z
®
-33/18
4-21
Section 4 Fault Codes
Error Source
Error Type
ID
Component
ID
Name
Cause
Effect
Solution
189
Lift Pump
Motor
21 FAULT
Motor Too Hot or
there is an issue
with the thermal
switch
Lift pump
disabled.
Auxiliary
functions
only
Allow motor to cool
down.Ensure proper
airflow to lift pump
motor.Ensure that
hydraulic pressure
settings are correct.
If motor cools and
problem remains, check
temperature switch and
wiring.
25
RESISTANCE
TOO HIGH
Pump motor
output is too low,
with respect
to PWM applied
Lift pump
disabled.
Auxiliary
functions
only
Check cables going to
the Lift Motor.
26
RESISTANCT
TOO LOW
Pump motor
output is too
high, with
respect
to PWM applied
Lift pump
disabled.
Auxiliary
functions
only
Check post neg is
shorted to B-
CONTROL SYSTEM FAULT CODE CHART
Summary of Contents for Genie Z-33/18
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