Kohler CH980 Engine Engine

• Upgradeable application software Undervoltage
• Severe electrical equipment damage.
  Cause: Welding the generator set.
  Fix: Never weld components of the generator set without first disconnecting the battery, controller wiring harness, and engine electronic control module (ECM).
• Remote two-wire start/stop capability Overcrank
• Master control switch mounted on the junction box: Run/Off-Reset/Auto Underfrequency
• Engine runtime, hours High engine temperature
• Digital voltage regulation: ±1.5% RMS no-load to full-load Overfrequency
• Crank cycle status Low battery voltage
• Battery short circuit
  Fix: Disconnect the battery before generator set installation or maintenance. Remove all jewelry before servicing the equipment. Use tools with insulated handles. Remove the negative (--) lead first when disconnecting the battery. Reconnect the negative (--) lead last when reconnecting the battery. Never connect the negative (--) battery cable to the positive (+) connection terminal of the starter solenoid. Do not test the battery condition by shorting the terminals together.
• Automatic start for programmed cranking cycle Overspeed
• Accidental starting
  Fix: Disconnect the battery cables before working on the generator set. Remove the negative (--) lead first when disconnecting the battery. Reconnect the negative (--) lead last when reconnecting the battery.
• Undervoltage shutdown UU
  Cause: Shutdown occurs if the voltage falls below 80% of the nominal system voltage for more than 10 seconds.
  Fix: Reduce the load and restart the generator set. Contact an authorized distributor/dealer for service if problem continues.
• Underfrequency shutdown UF
  Cause: Shutdown occurs if the governed frequency falls below 54 Hz for more than 5 seconds. Shutdown also occurs if the governed frequency falls below 56.5 Hz for more than 60 seconds. This function becomes active 10 seconds after engine start. (10 second inhibit).
  Fix: Reduce the load and restart the generator set. Contact an authorized distributor/dealer for service if problem continues.
• The generator set also shuts down on OC if no engine rotation is sensed during cranking. Shuts down 3 seconds after the fault is detected. Locked rotor
• Overvoltage shutdown OU
  Cause: Shutdown occurs if the voltage exceeds 120% of the system nominal voltage for more than 2 seconds.
  Fix: Contact an authorized distributor/dealer for service if problem continues.
• Overspeed shutdown OS
  Cause: Shutdown occurs if the engine speed exceeds 110% of the normal running speed for more than 0.3 seconds.
  Fix: Contact an authorized distributor/dealer for service if problem continues.

Compiled from service & troubleshooting documentation across every generator set that uses the Kohler CH980.

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.