Curtis 1243
GEN
2 Manual
73
7 — DIAGNOSTICS & TROUBLESHOOTING
Table 7
TROUBLESHOOTING CHART,
cont’d
LED
PROGRAMMER
FAULT
CODE
LCD DISPLAY
CATEGORY
POSSIBLE CAUSE
FAULT CLEARANCE
4,1
LOW BATTERY VOLTAGE
2
1. Battery voltage < undervoltage cutback.
When voltage rises above
2. Corroded battery terminal.
undervoltage cutoff point.
3. Loose battery or controller terminal.
4,2
OVERVOLTAGE
2
1. Battery voltage >overvoltage shutdown.
When voltage falls below
limit.
overvoltage cutoff point.
2. Vehicle operating with charger attached.
4,3
THERMAL CUTBACK
2
1. Temperature >85
°
C or < -25
°
C.
Clears when heatsink
2. Excessive load on vehicle.
temperature returns to
3. Improper mounting of controller.
within acceptable range.
4,4
ANTI-TIEDOWN
3
1. Mode switches shorted to B+.
Release Mode Select 1.
2. Mode Select 1
“
tied down
”
to select
Mode 2 or Mode 4 permanently.
MOTOR HOT
3
1. Field resistance > motor hot setpoint.
When resistance < setpoint.
MOTOR WARM
3
1. Field resistance > motor warm setpoint.
When resistance < setpoint.
Fig. 21
Curtis 840
Spyglass, 3-LED
and 6-LED models.
Fault LED (red)
BDI LED (yellow)
Hourmeter LED (green)
8-character LCD display
Fault LED (red)
BDI 0–100% LEDs
yellow
8-character LCD display
0
1
green
red
3-LED Spyglass
The
hourmeter LED
lights when the LCD
is displaying hourmeter data.
The
BDI LED
lights when the LCD is
displaying BDI%. It flashes when BDI%
drops to <10%.
The
Fault LED
flashes to indicate an
active fault, and the fault code appears on
the LCD.
The word SERVICE is displayed at key-on
if either service timer has expired.
6-LED Spyglass
The three green
BDI LEDs
function as a
bargraph showing BDI% between 52% and
100%.
Yellow LED = 36% – 51% BDI.
Red LED steady = 20% – 35% BDI.
Red LED flashing = 0 – 19% BDI.
The
Fault LED
flashes to indicate an
active fault, and the fault code appears on
the LCD.
The word SERVICE is displayed at key-on
if either service timer has expired.