Use and Care Manual

5. Troubleshooting 1-2014
5.4.19 Generator Set Stopped Without Fault Condition - Fault
Code 36
Possible Causes: Fuel supply, air fuel mixture, exhaust system, choke demand regulator,
carburetor, generator windings, ignition, wire connections
Diagnosis & Repair:
1. Check the fuel source.
2. Open any closed fuel valves.
3. Secure spark plug leads to spark plugs.
4. Check and service air filter as necessary.
5. Replace spark plugs.
6. Check for mechanical damage.
5.4.20 Invalid Set Configuration - Fault Code 37
Possible Causes: Generator set configuration, control
Diagnosis & Repair:
1. Have unit serviced by an authorized Cummins Power Generation dealer.
5.4.21 Processor Fault - Fault Code 43
Possible Causes: Faulty program
Corrective Actions:
1. Have unit serviced by an authorized Cummins Power Generation dealer.
5.4.22 Speed Sense Fault - Fault Code 45
Possible Causes: Loads, generator windings, wire connections
Corrective Actions:
1. Have unit serviced by an authorized Cummins Power Generation dealer.
5.4.23 Generator Set Overload - Fault Code 46
Possible causes: Loads, wire connections, windings
Corrective Actions:
1. Reduce the number of connected loads especially loads that require higher starting current
such as air conditioners.
2. Check and service air filter as necessary.
3. Have unit serviced by an authorized Cummins Power Generation dealer.
5.4.24 Alternator Over Temp - Fault Code 76
Possible Causes: Wire connections, faulty temperature sensor, faulty DC fan, blocked intake or
exhaust openings.
44 A029V089 (Issue 9)