![background image](http://html1.mh-extra.com/html/curtis/1297/1297_manual_2699565095.webp)
Curtis PMC 1297 Manual
87
Preliminary on Verso page is set with right edge at 7 and 7/8,
and the top (as on the Recto page) at 1/4.
7 — DIAGNOSTICS & TROUBLESHOOTING
LED DIAGNOSTICS
A Status LED is built into the 1297 controller. It is visible through a window
in the label on top of the controller. This Status LED displays fault codes when
there is a problem with the controller or with the inputs to the controller. During
normal operation, with no faults present, the Status LED flashes steadily on and
off. If the controller detects a fault, a 2-digit fault identification code is flashed
continuously until the fault is corrected. For example, code “3,2”—main
contactor welded—appears as:
¤¤¤ ¤¤
¤¤¤ ¤¤
¤¤¤ ¤¤
( 3 , 2 )
( 3 , 2 )
( 3 , 2 )
The codes are listed in Table 6.
Table 6
STATUS LED FAULT CODES
LED CODES
EXPLANATION
LED off
no power or defective controller
solid on
controller or microprocessor fault
0,1
■
¤
controller operational; no known faults
1,1
¤ ¤
traction motor current sensor error
1,2
¤ ¤¤
hardware failsafe
1,3
¤ ¤¤¤
traction motor M- shorted
1,4
¤ ¤¤¤¤
Lowering valve fault
2,0
¤¤
battery below 20% state of charge
2,1
¤¤ ¤
traction throttle fault
2,2
¤¤ ¤¤
pump motor current sensor error
2,3
¤¤ ¤¤¤
traction sequencing error
2,4
¤¤ ¤¤¤¤
pump motor M- shorted
3,1
¤¤¤ ¤
emerg. rev. wiring or tiller multiplexer error
3,2
¤¤¤ ¤¤
main contactor welded
3,3
¤¤¤ ¤¤¤
traction motor field open or shorted
3,4
¤¤¤ ¤¤¤¤
main contactor open
4,0
¤¤¤¤
expired disable timer
4,1
¤¤¤¤ ¤
expired maintenance monitor
4,2
¤¤¤¤ ¤¤
over-/under-voltage
4,3
¤¤¤¤ ¤¤¤
over-/under-temperature
4,4
¤¤¤¤ ¤¤¤¤
hydraulic throttle fault
NOTE
: Only one fault is indicated at a time, and faults are not queued up. Refer
to the troubleshooting chart (Table 5) for suggestions about possible causes of
the various faults.