The ECM Controlled is a generator-set controller. It is used on generator sets from Terex, including the T360 Super Quiet Generator.
| Symptom | Cause | Remedy |
|---|---|---|
| Engine runs, but loses power under load | Unit is overloaded | Reduce load |
| Engine runs, but loses speed under load | Improper connection | Check or Call TEREX Service |
| Engine shuts down | Oil Pressure Switch | |
| Engine shuts down automatically and TROUBLE LIGHT on CONTROL PANEL is illuminated | Overloaded engine | Reduce load |
| Engine turns over (cranks), but won’t run, Unit out of fuel | Check fuel level in tank, fill as needed | |
| Engine won’t crank | Loose battery cable | Check cables and battery electrolyte level. Recharge as necessary |
| Fluctuating or surging generator output voltage | Check engine fuel, oil, and air filters | |
| High engine speed | Call TEREX Service | |
| High generator output voltage | Voltage adjustment potentiometer | |
| Lost engine compression | Have compression checked by a trained technician | |
| Low engine speed | Call TEREX Service | |
| Low generator output voltage | Voltage adjustment set too low | Adjust voltage potentiometer |
| No generator output voltage | Circuit breaker tripped | Reset circuit breaker |
| TROUBLE LIGHT on CONTROL PANEL is illuminated | Broken fan belt | Inspect fan belt and replace as needed |
| Uneven reading between the legs when applying 24 volts to the field wires | Recheck your wiring connections. (If you can not find the problem hard wire the generator!) After you have the field wire connected start the unit again and check your output voltage. It may still be necessary to flash the fields to restore residual voltage. This needs to be done with the unit off and the field wires removed. (Do not flash the regulator, flash the field wires) | |
| Voltage does not come up to the rated voltage | Internal problem with the generator end | Check for even reading across the lines, if they are not this would mean you probably have a problem with the wiring of the switch or generator. If the generator voltage reads correctly, know there is not a problem with the generator end. Your problem is more than likely with the voltage regulator. In this case, contact the TEREX service department. |
Fault codes and symptom→remedy steps extracted from this controller’s service/owner documentation; verify against the official manual before servicing. Aggregated from the service documentation of generator sets built on this controller.