The GSC102-12 Engine is a generator-set controller. It is used on generator sets from DynaGen Technologies, including the GSC102-12.
| Symptom | Cause | Remedy |
|---|---|---|
| Annunciation output not working | Fault (short or overload) on one of the annunciation outputs | Check wiring for fault. The annunciation outputs do not provide short circuit therefore there may be damage on control board if short is discovered on annunciation output. |
| Battery Voltage is too low | To verify low battery, wait 10 to 20 seconds and see if Engine Run light flashes indicating Crank Rest. re-charge battery. Measure battery voltage appearing on AUTO position. | |
| Crank output damaged, not working | Check wiring and replace controller if necessary | |
| Engine cranks but does not start | Out of fuel | Check fuel level, add fuel if necessary |
| Engine does not crank | Battery is low or terminals are dirty | Clean terminals and re-charge battery |
| Engine starts but shuts down after ‘Oil BypassTM period’ due to low oil/high temp | Oil/Temp input wiring improperly connected. | Check wiring for proper connections. Disconnect oil pressure and engine temperature wires and confirm the switches are open during normal engine operation. |
| Generator overloaded while running | Turn off loads and restart generator | |
| Solid oil LED immediately on start-up, without engine actually cranking or starting. | False Speed Signal being detected by controller. This problem can sometimes occur in installations where there is AC power from inverters near generator output lines connected to the speed signal wires. Install a small step down transformer between the speed sensing wires and the generator output. If the neutral from the generator output is not grounded, attach it to ground | |
| Starter or starter solenoid damaged | Replace/repair damaged starter or starter solenoid. | |
| Underspeed failure LED on | Speed signal improperly connected, missing, or damaged. | Check speed signal wiring; replace damaged speed signal source. |
| Unit does not operate when powered to Test mode | Power leads to unit are reversed | Confirm correct wiring for ground and (+)battery and re-attempt testing. |
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.