121

Possible Causes

• •Cold engine
• •Single step large block load removal
• •Fault simulation was enabled with InPower
• •Fault threshold is not set correctly with InPower
• •The electronic governor actuator could be bad
• •Electronic governor actuator could be bad

Suggested Actions

1. 1Clear fault and restart genset
2. 2Verify that fault is not enabled
3. 3Remove battery power from control (if InPower is not available)
4. 4Determine highest allowable setting and set threshold as required
5. 5Refer to fault code 121
6. 6Inspect or repair O-rings, pump
7. 7Verify that fault is not enabled (if no InPower, remove battery power from control)
8. 8Determine highest allowable setting and set threshold as required using InPower
9. 9Monitor engine RPM using InPower (refer to fault code 121)
10. 10Inspect or repair O-rings and pump

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