Kohler 12.5EFORZD Generator Set

⚠ Be sure to save the new settings immediately before exiting the configuration mode; changes are lost if the controller times out (about 1 minute).

1. Hold the Select button and move the master switch to RUN to enter configuration mode.
2. Press the down arrow key then the up arrow key 3 times to enter configuration mode (password).
3. Set the voltage/frequency parameter Uu for the model.
4. Set the unit configuration parameter Uc (marine, standby, mobile).
5. Set the engine type parameter Ec.
6. Press the up arrow at the Adnc display to enter advanced configuration mode.
7. Set the engine data input type Ed.
8. Set the battery voltage Bt (12 or 24 VDC).
9. Set the communications parameter Cn.
10. Enter save mode and save your settings before exiting.

⚠ The generator set must be running during these adjustments.

⚠ The engine speed (frequency) adjustment menus are not accessible on models with mechanical governors.

Tools: multimeter

1. Move the master switch to RUN; the engine starts and runtime hours display.
2. Hold the Select button about 5 seconds until the program version number displays.
3. Press the down arrow key then the up arrow key 3 times to enter adjustment mode.
4. 1P: adjust voltage coarse in large increments (approximately 5-7 volts per step).
5. 2P: adjust voltage fine in smaller increments (approximately 0.5-0.7 volts per step).
6. Adjust voltage stability (gain) coarse and fine.
7. 3P: set volts/Hz (00=low, 09=high).
8. 4P: adjust engine governor speed coarse and fine.
9. 5P: adjust engine governor stability (gain) coarse and fine.
10. Enter SAVE mode and save settings before exiting the adjustment mode.

⚠ Disconnect the battery cables before working on the generator set; remove the negative lead first and reconnect it last.

Tools: multimeter, personal computer with Program Loader Software

1. Record generator set information required for configuration: model, market, voltage, frequency, phases, battery voltage.
2. Place the generator set master switch in the OFF position.
3. Disconnect power to the battery charger, if equipped.
4. Disconnect the engine starting battery(ies), negative lead first.
5. Open the junction box; disconnect the controller at P1, J15, and J16.
6. Models ECD/EFCD, EGD/EFGD, EGZD only: disconnect the CO sensor harness at the 4-pin connector.
7. Remove four controller mounting screws and remove the old controller.
8. ECD/EFCD, EGD/EFGD, EGZD only: install CO sensor module assembly GM46362 on the back of the new controller GM47982.
9. Install the new controller and secure with the mounting screws.
10. Reconnect the P1, J15, and J16 connectors; connect the CO sensor harness on applicable models.
11. Models 10/13/15EG, 10/13/15ERG, 15/30RES, 15/30RYG with S/N before 2053692: cut a 1-in. section of the gray/orange lead entering pin 9 at the ECM connector.
12. Check that the generator set master switch is in the OFF position.
13. Reconnect the engine starting battery, negative lead last.
14. Reconnect power to the battery charger, if equipped.
15. Check the controller application software version and load the latest application code if necessary.