© 2022 Staheli West
199
Faults
Fault 421: Generator Will Not Start from Touch Screen
Causes
Troubleshooting
Fixes
• Slightly drained battery
causes PLC to drop start signal
to generator controller during
engine crank.
• Start/Stop the generator
manually from the generator
controller by pressing “Auto”
then “Manual Start”.
• Group 31 Battery
CCA @ 0° F =760
• Tray size: L 12-7/8” x W 6-3/4”
• Temporary fix: Start/Stop the
generator manually from the
generator controller by pressing
“Auto” then “Manual Start”.
• Charge the battery.
• Install the battery update kit
with larger battery and cutoff
switch. Part Number: 11062.
• Faulty 12 V regulator (2015-
2016 machines).
• Check if there is a green light
on the 12 V regulator (Panel 3
diagram 7B).
• Replace 12 V regulator.
• Faulty wiring.
• Inspect wiring for continuity,
voltage, and ground.
• Test wiring between PLC Y0 to
Gen Control Terminal 19.
• Replace/Repair faulty wiring.
Fault 422: Generator Will Not Shut off from Touch Screen
Indicates that the generator was started manually from the generator controller
• The generator needs to be shutoff from the generator controller.
• Consider getting the battery update kit with larger battery and cutoff switch. Part Number: 11062.
Fault 424: Generator Controller Not Working; “????????” Displayed on Screen
Indicates that there is a failure in the generator controller.
• Disconnect the battery for 1 minute and reconnect.
• Controller needs to be reprogrammed. Contact dealer.
• Replace the generator controller.