TM 9-6115-730-24
0008
TROUBLESHOOTING USING AL FAULT CODES - Continued
SYMPTOM
11.
AL 12
MALFUNCTION
Phase Over Current
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
Turn the ENGINE CONTROL switch to MANUAL START.
STEP 2.
Verify that generator set load is properly balanced between each of the three
phases and that the generator set is not overloaded.
STEP 3.
Verify that problem is resolved. If not, continue to the next step.
STEP 4.
On GSC keypad, press ALARM CODES.
STEP 5.
Verify AL12 appears on upper display.
STEP 6.
Verify OP5-1 setpoints P128 thru P137 (WP 0083, Table 5).
a. If setpoints are changed, verify that the problem has been resolved.
b. If setpoints are not changed, verify if any fault codes or engine fault codes
are displayed on GSC upper display and record.
STEP 7.
Troubleshoot per displayed fault codes and WP 0009.
STEP 8.
Verify the problem has been resolved.
STEP 9.
If not, replace Overload/Short Circuit Module (WP 0042)
SYMPTOM
12.
AL 13
MALFUNCTION
Generator Total Over Current
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
Turn the ENGINE CONTROL switch to MANUAL START.
STEP 2.
Verify that generator set load is properly balanced between each of the three
phases and that the generator set is not overloaded.
STEP 3.
Verify that problem is resolved. If not, continue to the next step.
STEP 4.
On GSC keypad, press ALARM CODES.
STEP 5.
Verify AL13 appears on upper display.
STEP 6.
Verify OP5-1 setpoints P128 thru P137 (WP 0083, Table 5).
a. If setpoints are changed, verify that the problem has been resolved.
b. If setpoints are not changed, verify if any fault codes or engine fault codes
are displayed on GSC upper display and record.
0008-8
