Kohler Curtis F Series User Manual

7 — DIAGNOSTICS AND TROUBLESHOOTING
Curtis AC F2-A, F4-A, F6-A Motor Controllers – FOS 4.5 – April 2022 Return to TOC
pg. 210
Table 24 Fault Code Troubleshooting Chart, cont’d
FLASH
CODE
FAULT NAME
(Curtis Integrated Toolkit™)
POSSIBLE CAUSES SET/CLEAR CONDITIONS FAULT ACTIONS
1-5
0x15
Controller Severe Undertemp
Controller_Severe_Undertemp
0x2141
Fault Type(s): 1
1. Controller is operating in an
extreme environment.
2. See Programmer » System Monitor
menu » Controller » Controller
Temperature.
Set: Heatsink temperature
below –40°C (–40°F).
Clear: Bring the heatsink
temperature above
–40°C (–40°F) and then
Reset Controller.
ShutdownVehicle:
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
FullBrake
ShutdownPump
Dual Drive
This Motor:
ShutdownMotor
SevereDual
Other Motor:
SevereDual
LOSDual
TrimDisable
1-6
0x16
Controller Severe Overtemp
Controller_Severe_Overtemp
0x2142
Fault Type(s): 1
1. Controller is operating in an
extreme environment.
2. Excessive load on vehicle.
3. Improper mounting of controller.
4. See Programmer » System
Monitor menu » Controller »
Controller Temperature.
Set: Heatsink temperature
above +95°C.
Clear: Bring heatsink
temperature below +95°C, and
then Reset Controller.
ShutdownVehicle:
ShutdownMotor
ShutdownMainContactor
ShutdownEMBrake
ShutdownThrottle
FullBrake
ShutdownPump
Dual Drive
This Motor:
ShutdownVehicle
Other Motor:
ShutdownVehicle
1-7
0x17
Severe B+ Undervoltage
Severe_B_Plus_Undervoltage
0x2120
Fault Type(s):
1 = Undervoltage cutback
(0x343B = 0%) or capacitor
voltage below safe limits
for 64ms.
2 = Commanded voltage could
not be achieved due to low
capacitor voltage, see also
phase PWM mismatch.
1. Non-controller system drain
on battery.
2. Battery resistance too high.
3. Battery disconnected while driving.
4. Blown B+ fuse or main contactor
did not close.
5. Battery parameters are misadjusted.
6. See Programmer » Monitor menu »
Controller » Capacitor Voltage.
7. See the Voltage Limits in Chapter 3.
Set: When Main is closed and
the FET Bridge is enabled,
either the undervoltage drive
current cut back = 0% for 64
ms or the Brownout Voltage
is reached.
Clear: Undervoltage drive
current cut back > 0% for 100
ms and capacitor voltage >
brownout voltage.
No drive torque.
Fault Action:
ShutdownPump
ShutdownMotor
Dual Drive
This Motor:
TrimDisable
ShutdownPump
ShutdownMotor
Other Motor:
TrimDisable

Kohler Curtis F Series Specifications

General

Brand	Kohler
Model	Curtis F Series
Category	Controller
Language	English