Specifications

28
Curtis 1204M/1205M/1209M/1221M Manual
5 — DIAGNOSTICS & TROUBLESHOOTING
Table 5 TROUBLESHOOTING CHART
LED
PROGRAMMER
CODE
LCD DISPLAY
EFFECT OF FAULT
RECOVERY
POSSIBLE CAUSE
1,1 EE Fault PWM output disabled. Modify any programmable 1. EEPROM data lost or
parameter with programmer. damaged.
2. EEPROM checksum error.
1,2 MOSFET Short Fault
PWM output disabled. Cycle KSI. 1. MOSFET shorted.
1,4 Wiring Fault
PWM output disabled. Cycle KSI. 1. HPD Lockout exists for more
than 10 seconds.
2,1 Under Voltage Cutoff PWM output disabled. Battery voltage rises above 1. Battery voltage at or below
Under Voltage Cutback the programmed Under Voltage
threshold. Cutoff threshold.
2,3
HPD PWM output disabled. Release throttle. 1. Applied throttle input >20%
when KSI is turned on.
2. Applied throttle input >20%
after clearing throttle fault.
2,4 Throttle Fault Throttle request disabled. Throttle input signal 1. Throttle input wire open
within allowable limits. or shorted.
2. Defective throttle.
3. Wrong Throttle Type selected.
3,1 Coil Short/Driver Fault
PWM output and main Check the connections and 1. Main contactor coil is shorted.
contactor disabled. replace the main contactor 2. Internal driver transistor is
if necessary. shorted.
3,2 Main Weld Fault
PWM output and main 1. Replace main contactor. 1. Main contactor is welded.
contactor disabled. 2. Correct the parameter 2. Main contactor is controlled
Rev Input / Main Driver. outside, but main driver
function is active.
3,3 Main Driver Fault
PWM output and main Replace defective controller. 1. Main contactor driver is broken.
contactor disabled.
3,4
Main Contactor DNC PWM output disabled. Voltage difference between 1. Main contactor did not close
KSI and B+ busbar is less (DNC).
than the main contactor
DNC threshold.
4,1 Under Voltage Cutback
Output current reduced. Battery voltage rises above 1. Battery voltage at or below
Under Voltage Cutback the programmed Undervoltage
threshold. Cutback threshold.
2. Corroded battery terminal.
3. Loose battery or controller
connection.
4,2 Over Voltage
PWM output disabled. Battery voltage falls below 1. Battery voltage ≥ factory-set
(Over Voltage Cutoff - Over Voltage Cutoff threshold.
Over Voltage Hysteresis). 2. Operation with charger
attached.