Troubleshooting
2Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| 180 VAC Output | One of the four peripheral components above being defective | First, disconnect the EBC module from the AVR board. There are four wires, F1, F2, EB and DR on the AVR. Let the wires hang without touching anything and check the voltage output. If the voltage is 120 VAC, then the EBC module is defective because it is keeping the EBS engaged all the time instead of only when a load is applied. If this test yields residual voltage, then this means that the EBC is good and the RFI board may have a blown fuse or is simply defective. Test the fuses on the RFI. If any of them are blown, replace them with the same type and value of fuse that came out of it. If fuses are fine, bypass the RFI by locating the two leads out of it and following them up to where they plug into the AVR. This will be under the top cover of the generator. They may be hard to see as they are usually stuffed under the buss bars. Unplug the RFI from the AVR leads and connect the two AVR leads together. Start the generator and check the voltage output. You should have 120 VAC at this point. If so, this confirms that the RFI is defective and needs replaced. If you still have residual voltage, the AVR is defective. However, before condemning the AVR, refer to the AVR details page for verification of the placement of the jumper and the resistor wire. Also verify that the resistor is not blown. |
| Residual Voltage | Bypass the RFI as described above. Start the generator and check the voltage output again. If the voltage is good, then the RFI is defective and needs replaced. If you still have residual voltage, the AVR is defective and needs replaced. |
Fault codes and symptom→remedy steps extracted from this unit’s service/owner documentation; verify against the official manual before servicing.
About
Cummins/Onan 9kW Newage Generator — light tower. Specifications and parts compiled from manufacturer documents.