Table 5 Troubleshooting Chart - Curtis 1204M Manual

5 — DIAGNOSTICS & TROUBLESHOOTING
LED PROGRAMMER
CODE LCD DISPLAY
EE Fault
1,1
MOSFET Short Fault
1,2
Wiring Fault
1,4
Under Voltage Cutoff
2,1
HPD
2,3
Throttle Fault
2,4
Coil Short/Driver Fault
3,1
Main Weld Fault
3,2
Main Driver Fault
3,3
Main Contactor DNC
3,4
Under Voltage Cutback Output current reduced.
4,1
Over Voltage
4,2
28

Table 5 TROUBLESHOOTING CHART

EFFECT OF FAULT
PWM output and main
contactor disabled
PWM output and main
contactor disabled.
PWM output and main
contactor disabled.
PWM output and main
contactor disabled.
PWM output disabled.
Throttle request disabled. Throttle input signal
PWM output and main
contactor disabled.
PWM output and main
contactor disabled.
PWM output and main
contactor disabled.
PWM output and main
contactor disabled.
PWM output and main
contactor disabled.
RECOVERY
Modify any programmable
parameter with programmer.
Cycle KSI.
Cycle KSI.
Battery voltage rises above
Under Voltage Cutback
threshold.
Release throttle.
within allowable limits.
Check the connections and
replace the main contactor
if necessary.
1. Replace main contactor.
2. Correct the parameter
Rev Input / Main Driver.
Replace defective controller. 1. Main contactor driver is broken.
Voltage difference between
KSI and B+ busbar is less
than the main contactor
DNC threshold.
Battery voltage rises above
Under Voltage Cutback
threshold.
Battery voltage falls below
(Over Voltage Cutoff -
Over Voltage Hysteresis).
Curtis 1204M/1205M/1209M/1221M Manual
POSSIBLE CAUSE
1. EEPROM data lost or
damaged.
2. EEPROM checksum error.
1. MOSFET shorted.
1. HPD Lockout exists for more
than 10 seconds.
1. Battery voltage at or below
the programmed Under Voltage
Cutoff threshold.
1. Applied throttle input >20%
when KSI is turned on.
2. Applied throttle input >20%
after clearing throttle fault.
1. Throttle input wire open
or shorted.
2. Defective throttle.
3. Wrong Throttle Type selected.
1. Main contactor coil is shorted.
2. Internal driver transistor is
shorted.
1. Main contactor is welded.
2. Main contactor is controlled
outside, but main driver
function is active.
1. Main contactor did not close
(DNC).
1. Battery voltage at or below
the programmed Undervoltage
Cutback threshold.
2. Corroded battery terminal.
3. Loose battery or controller
connection.
1. Battery voltage ≥ factory-set
Over Voltage Cutoff threshold.
2. Operation with charger
attached.