TROUBLESHOOTING USING AL FAULT CODES - Continued
This alarm code should occur only when the generator sets are operated in parallel mode.
Generator Reverse Power
On EMCP set ENGINE CONTROL switch to OFF/RESET. Battery Disconnect
switch is OFF; DEAD CRANK SWITCH is OFF.
Verify that paralleling cables are securely connected between generator sets to
Verify that load cables are connected observing proper phase polarity.
Verify that generator sets are set for same output voltage.
a. Verify the problem has been resolved.
b. If problem remains, verify if any fault codes or engine fault codes are
displayed on GSC upper display and record.
Troubleshoot per displayed fault codes and WP 0009.
Verify protective relay function code disabled by setpoint P125 (WP 0085).
Enable protective relay function code setpoint P125 (WP 0085, Table 5).
Verify the problem has been resolved.
Phase Over Current
Verify that generator set load is properly balanced between each of the three
phases and that the generator set is not overloaded.
Verify that problem is resolved.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP turn the ENGINE CONTROL switch to COOL DOWN/STOP.
On GSC keypad, press ALARM CODES.
Verify AL12 appears on upper display.