1800
What This Code Means
Generator produces low voltage at no-load; Generator shuts down for overload; Generator shuts down for over voltage; No RPM pulses sensed for 75 consecutive milliseconds while starter active; Cranking faults to RPM sensor loss; Starter engaged, no tooth pulses for 75 ms; While running, no tooth pulses for 75 consecutive milliseconds; Unit Overloaded or Fuel System issue; Low Fuel Pressure; Throttle Stuck Closed/near Closed; No pulse during cranking (RPM sensor); No tooth pulses sensed for 75 consecutive milliseconds while starter active; No pulse during running (RPM sensor); Loss of RPM sensor signal while running; Missing pulses during cranking (RPM sensor); Missing pulses during running (RPM sensor); Underspeed condition detected (<83.3% speed (60 Hz) or <66.6% speed (50 Hz) for 30 seconds); Unit overloaded slowing engine speed; Underspeed condition detected; Low fuel pressure detected for 1200 ms before underspeed; Throttle stuck closed or near closed; Limiting fuel to the engine, s
Possible Causes
- •Fuel supply problem
- •Shorted condition in a connected load
- •Shorted condition in one of the load circuits
- •Heavy capacitive load
- •Starter circuit issue
- •RPM sensor loss
- •RPM sensor alignment
- •Low battery
- •Unit is overloaded slowing engine speed
- •Highly inductive loads
- •Low fuel pressure starves the engine, slowing it.
- •Low fuel pressure detected for 1200 ms before underspeed condition detected.
- •The throttle is stuck closed or stuck near closed limiting the fuel to the engine, slowing it down.
- •Stuck closed must be detected for one second with underspeed to set E-Code.
- •RPM sensor issue
- •RPM sensor alignment issue
- •Low fuel pressure starving the engine
- •Throttle stuck closed or near closed
- •Overspeed generator
- •Actuator
Suggested Actions
- 1Correct the fuel supply
- 2Open all load breakers and bring them on one at a time to determine which branch circuit is the cause of the problem.
- 3Refer to Problem 31 for RPM Sensor troubleshooting
- 4Check fuel supply and settings
- 5Test 68
- 6Problem 31
- 7Problem 3
- 8Refer to Problem 3 – Generator Shuts Down for Overload / Overvoltage page 55
- 9Check the inlet/outlet for debris.
- 10Check coolant sensor circuit for proper operation.
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