Cummins/Onan TGHAA — Corrective Action:

For the Cummins/Onan TGHAA.

Procedure

1. Check for and remove any objects blocking the air inlet or outlet openings.
2. Reduce the electrical load. (Note that high altitude and high ambient temperature decrease engine cooling capacity.)
3. Clean the engine cooling fins and blower blades. See Periodic Maintenance. CONTROL CARD FAULT SHUTDOWN—CODE NO. 35 (There was a memory error in the controller microcontroller during self-test) Corrective Action: See the Service Manual. INVALID SET CONFIGURATION ALERT—CODE NO. 37 (Set configuration must be programmed for each replacement controller assembly) Corrective Action: See your authorized Onan dealer. Special software and a PC are required to re- configure the controller. WEAK BATTERY ALERT—CODE NO. 39 (The controller sensed that battery voltage was less than 12 volts while the genset was running) Corrective Action:
1. Clean and tighten the positive (+) and negative (–) battery cable connections at the battery and at the genset.
2. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations.
3. Check for and remove any parasitic loads on the battery. GENERATOR FIELD FAULT SHUTDOWN—CODE NO. 41 (The controller sensed a short in the field circuit while the genset was running) Corrective Action: See the Service Manual.
1000 HOUR SERVICE ALERT—CODE NO. 43 (The genset has accumulated another 1000 hours of operation since the last service alert) Corrective Action: Perform the required maintenance according to Periodic Maintenance. The alert can only be reset by means of a software command via network or PC. See your authorized Onan dealer. Redistribution or publication of this document, by any means, is strictly prohibited.

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.