TM 9-6115-729-24
0008
TROUBLESHOOTING USING AL FAULT CODES - Continued
SYMPTOM
13.
AL 14
MALFUNCTION
Phase A No Voltage Input at GSC input (P7-10)
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP turn the ENGINE CONTROL switch to COOL DOWN/STOP.
STEP 2.
On GSC keypad, press ALARM CODES.
STEP 3.
Verify AL14 appears on upper display. Check setpoints per WP 0085.
STEP 4.
Troubleshoot A5F1 on ATB A5 per WP 0011, SYMPTOM 4.
STEP 5.
If indicated, replace A5F1 on back of ATB A5 (WP 0041).
a. Verify the problem has been resolved.
b. If not, replace ATB A5 (WP 0041).
STEP 6.
Verify that problem has been resolved. If not, replace the GSC (WP 0040).
STEP 7.
Verify the problem has been resolved.
SYMPTOM
14.
AL 15
MALFUNCTION
GSC Configuration Error
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP turn the ENGINE CONTROL switch to COOL DOWN/STOP.
STEP 2.
On GSC keypad, press ALARM CODES.
STEP 3.
Verify AL15 appears on upper display. Check setpoints per WP 0085, Table 3
and Table 5.
STEP 4.
Verify if any fault codes or engine fault codes are displayed on upper display and
record.
a. Troubleshoot per displayed fault codes and WP 0009.
b. On EMCP set ENGINE CONTROL switch to MANUAL START.
c.
Verify that engine speed rpm is for correct output frequency by pressing
ENGINE METER key on GSC.
1800 rpm for 60 Hz
1500 rpm for 50 Hz
STEP 5.
Verify the problem has been resolved.
0008-10
