Curtis 1221M User 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 and main Modify any programmable 1. EEPROM data lost or
contactor disabled parameter with programmer. damaged.
2. EEPROM checksum error.
1,2 MOSFET Short Fault PWM output and main Cycle KSI. 1. MOSFET shorted.
contactor disabled.
1,4 Wiring Fault PWM output and main Cycle KSI. 1. HPD Lockout exists for more
contactor disabled. than 10 seconds.
2,1 Under Voltage Cutoff PWM output and main Battery voltage rises above 1. Battery voltage at or below
contactor disabled. 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 and main Voltage difference between 1. Main contactor did not close
contactor disabled. 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 and main Battery voltage falls below 1. Battery voltage ≥ factory-set
contactor disabled. (Over Voltage Cutoff - Over Voltage Cutoff threshold.
Over Voltage Hysteresis). 2. Operation with charger
attached.
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Curtis 1204M/1205M/1209M/1221M Manual

Curtis 1221M Specifications

General

Brand	Curtis
Model	1221M
Category	Controller
Language	English