Product Manual B
6. Troubleshooting 5-2019
90 A062J680 (Issue 1)Copyright © 2019 Cummins Inc.
WARNING
Some generator set service procedures present hazards that can result
in severe personal injury or death. Only trained and experienced service
personnel with knowledge of fuels, electricity, and machinery hazards
should perform generator set service.
Code 29 - High Battery Voltage
Possible Causes:
• Control
• Faulty charger
• Incorrect battery configuration
• Wire damage
Corrective Action:
1. Have the battery charger serviced by an authorized Cummins dealer.
Code 32 - Low Cranking Speed Sense
Possible Causes:
• Air intake system
• Alternator windings
• Battery
• Battery connections
• Brushes and slip rings
• Engine components
• Exhaust system
• Oil viscosity
• Starter
• Wire connections
Corrective Actions:
1. Clean and tighten the positive (+) and negative (–) battery cable connections at
the battery.
2. Recharge or replace the battery. Refer to the battery manufacturer's
recommendations.
3. Verify that brushes and slip rings are in good condition. If not, clean slip rings
and/or replace brushes.
4. Verify that the engine oil viscosity is correct for the ambient temperature. If not,
refill and replace engine oil with the correct viscosity.
5. Have the unit serviced by an authorized Cummins dealer.