Kohler Curtis F Series User Manual

7 — DIAGNOSTICS AND TROUBLESHOOTING
pg. 217
Return to TOC Curtis AC F2-A, F4-A, F6-A Motor Controllers – FOS 4.5 – April 2022
FLASH
CODE
FAULT NAME
(Curtis Integrated Toolkit™)
POSSIBLE CAUSES SET/CLEAR CONDITIONS FAULT ACTIONS
3-4
0x34
Load Hold Driver Fault
Load_Hold_Driver_Fault
0x2430
Fault Type(s):
1 = Driver current exceeded
hardware limits.
2 = Driver current exceeded
congured over-current limits.
3 = Driver commanded PWM
active, using diagnostic
pulses. Voltage measured
high, should be low. Typically
caused by driver failure, or
driver pin short to high.
4 = Driver commanded PWM
active, using diagnostic pulses.
Voltage measured low, should
be high. Either open circuit, or
driver pin short to ground.
5 = Driver commanded PWM is
0, and voltage measured low
(should be high). Either open
circuit, or driver pin short
to ground.
7 = Driver undercurrent -
Monitored current is below
undercurrent threshold.
Fault types 1-2 are always checked.
Fault types 3-5 are only checked
if driver checks are enabled.
1. Open or short on driver load.
2. Dirty connector pins at controller
or contactor coil.
3. Bad connector crimps or
faulty wiring.
4. Driver overcurrent, as set by the
Driver x Overcurrent parameter.
5. See Programmer » Controller
Setup » Outputs » Driver x »
Driver x Overcurrent.
Set: The assigned load
hold driver is either open
or shorted, or exceeded its
overcurrent setting.
Clear: Correct the open or short,
and then Reset Controller.
NO ACTION
Dual Drive
Same, both motors
Table 24 Fault Code Troubleshooting Chart, cont’d

Kohler Curtis F Series Specifications

General

Brand	Kohler
Model	Curtis F Series
Category	Controller
Language	English