7 — DIAGNOSTICS AND TROUBLESHOOTING
pg. 229
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
9-3
0x93
Encoder LOS
Encoder_LOS
0x2233
Fault Type(s): 1
1. Limited Operating Strategy (LOS)
control mode has been activated
as a result of either an Encoder
Fault (ash code 3-6) or a Stall
Detected fault (ash code 7-3).
2. Motor encoder failure.
3. Bad crimps or faulty wiring.
4. Vehicle has stalled.
Set: Either the Encoder Fault
(ash code 3-6) or Stall
Detected (ash code 7-3) was
detected. If the parameter LOS
Upon Encoder Fault = On and
the Interlock has been cycled,
then the Encoder LOS (ash
code 9-3) control mode is
activated, allowing limited motor
control (limp home mode).
Clear: Cycle KSI or, if LOS
Mode was activated by the
Stall Detected fault, clear
by ensuring the encoder
senses the proper operation,
Motor RPM = 0, and Throttle
Command = 0.
LOS Mode
Fault Action:
None, unless a fault action
is programmed in VCL.
Dual Drive
Same, both motors
9-4
0x94
Emer Rev Timeout
Emer_Rev_Timeout
0x2330
Fault Type(s): 1
1. Emergency Reverse was activated
and concluded because the EMR
Timeout timer expired.
2. The emergency reverse input is
stuck On.
Set: Emergency Reverse was
activated and ran until the EMR
Timeout timer expired.
Clear: Turn the emergency
reverse input (switch) to Off.
ShutdownThrottle
ShutdownEMBrake
Dual Drive
Same, both motors
9-6
0x96
Pump BDI
Pump_BDI
0x2450
Fault Type(s): 1
1. The BDI is below the Lift_BDI_
Lockout setting.
2. BDI parameters are mistuned.
Set: Pump deactivated when
BDI Percentage below Lift
lockout setting.
Clear: Charge Battery; Cycle
KSI.
No Fault Action.
Yet, the pump is deactivated.
Dual Drive
Same, both motors
Table 24 Fault Code Troubleshooting Chart, cont’d
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