Cummins/Onan TGHAA — Corrective Action:

For the Cummins/Onan TGHAA.

Applies to: Cummins Onan Tghaa

Procedure

1. 1. Replace Fuse F1 (B+) if blown.
2. 2. Clean and tighten the positive (+) and negative (–) battery cable connections at the battery and at the genset (Page 8).
3. 3. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. NO POWER WHEN THE GENSET IS RUNNING (A line circuit breaker or transfer switch is OFF, tripped or malfunctioning) Corrective Action:
4. 1. Reset or turn ON the line circuit breaker on the genset.
5. 2. Reset or turn ON any other circuit breaker in the power supply system.
6. 3. Check for proper transfer switch function. HIGH ENGINE TEMPERATURE FAULT SHUTDOWN—CODE NO. 1 (The controller sensed that the engine temperature design limit has been exceeded) Corrective Action:
7. 1. Check for and remove any objects blocking the air inlet or outlet openings.
8. 2. Reduce the electrical load. (Note that high altitude and high ambient temperature decrease engine cooling capacity.)
9. 3. Clean the engine cooling fins and blower blades. See Periodic Maintenance.
10. 4. Review the installation and housing design against the specifications and requirements of the Instal- lation Manual. LOW OIL PRESSURE FAULT SHUTDOWN—CODE NO. 2 (The controller sensed that the low oil pressure cutoff switch did not open within 10 seconds of starting) Corrective Action:

Source: manual:965-0101B Onan TGHAA Genset Operator manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.