Kohler Generator Fault Code List
If you own a Kohler generator, you know how important it is to keep it in good working condition. One way to do this is to stay on top of any fault codes that may appear. Fault codes are diagnostic tools that help identify potential issues with your generator and can save you time and money in the long run. In this article, we will provide you with a comprehensive Kohler Generator Fault Code List and a table for each code’s warning/shutdown condition and suggested checks. By referring to this table, you can quickly identify any issues with your generator and take appropriate action to resolve them.
| Code | Warning/Shutdown | Condition | Potential Causes | Recommended Troubleshooting | Check | Notes/Comments |
|---|---|---|---|---|---|---|
| AC Sens Loss | W (1 sec.) SD (3 sec.) | AC sensing lost. In Auto mode, generator output AC sensing is lost. Detection begins 10 seconds after crank disconnect | Faulty wiring or connection to AC sensing circuit | Check wiring and connections. Contact an authorized distributor/dealer for service if necessary | Contact an authorized distributor/dealer for service | |
| Accy PwrOver W Warning | W | Accessory Power Overload. An over current fault (short circuit) on the accessory controller power output | Short circuit in the accessory controller power output wiring | Check wiring and connections. Contact an authorized distributor/dealer for service if necessary | Contact an authorized distributor/dealer for service | |
| Alt Protect | SD | High generator current has been detected. The generator set shuts down to protect the alternator from damage caused by overheating the windings (10RESV and 12RESV only) | Overload on the generator set | Reduce the load | Reduce the load | 10RESV and 12RESV only |
| ATS ComError | W | ATS communication error. Warning is displayed if ATS interface connection is lost. See Section 2.5.3 | Communication wiring between transfer switch interface board and generator set is faulty | Check communication wiring between transfer switch interface board and generator set | Check communication wiring | |
| ATS PhaseRot | W | ATS phase rotation mismatch. Transfer switch phase rotation does not match, ATS will not transfer. | Incorrect ATS connection or wiring | Correct the ATS connection. Refer to the ATS Installation manual, wiring diagrams, and labels on the transfer switch | Correct the ATS connection | |
| Aux Input | SD | Auxiliary input. An optional customer-connected input is closed. (Digital input from optional PIM.) | Faulty customer-supplied equipment | Check customer-supplied equipment | Check customer-supplied equipment | Digital input from optional PIM |
| Batt Chg Flt | W | Battery charger fault. Input to PIM from an external battery charger (not the built-in battery charger) | Faulty external battery charger | Check external battery charger | Check external battery charger | Input to PIM from an external battery charger |
| Battery High | W | Engine starting battery voltage rises above 16 VDC for more than 10 seconds. Inhibited during the engine crank cycle. Clears when the battery voltage returns to an acceptable level | Faulty battery or battery charger | Check the battery rating and condition. Check the battery charger operation. | Check battery and charger | |
| Battery Low | W | Engine starting battery voltage falls below 12.5 VDC for more than 90 seconds when the engine is not running. Not operative during the engine crank cycle. Clears when the battery voltage returns to an acceptable level | Faulty battery or battery charger | Check the battery rating and condition. Check the battery charger operation. Charge or replace the battery | Check battery and charger | |
| Battery CrLo Warning | W | Engine starting battery voltage falls below 11 Volts for more than 10 seconds. Inhibited during the engine crank cycle. Clears when the battery voltage returns to an acceptable level | Faulty battery or battery charger | Check the battery rating and condition. Check the battery charger operation. Charge or replace the battery | Check battery and charger | |
| Eng Speed High | SD | Engine speed exceeds 115% of the normal running speed for more than 0.3 seconds. | Faulty engine control system | Contact an authorized distributor/de |
How Do I Clear The Error Code On My Kohler Generator?
Clearing error codes on your Kohler generator is a relatively straightforward process. Once you have identified the fault code and taken the necessary steps to resolve the underlying issue, you can clear the code and reset your generator’s controller.
To clear an error code on your Kohler generator, follow these steps:
1. Press the “ENTER” button on the controller to access the menu.
2. Scroll down to “CLEAR CODES” and press “ENTER”.
3.The controller will display a message asking if you want to clear the codes. Select “YES” and press “ENTER”.
4. The controller will clear all active and inactive codes, and the screen will display a message confirming that the codes have been cleared.
It’s important to note that clearing error codes on your Kohler generator does not necessarily fix the underlying issue. If the same error code appears again after you have cleared it, you should take further steps to diagnose and resolve the issue.
Additionally, some error codes may be more serious than others and may require the attention of an authorized distributor or dealer. If you are unsure about how to clear an error code or have any concerns about your generator’s operation, it’s always best to seek professional assistance.
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