| 27 | Low AC voltage shutdown | Voltage on any phase dropped below preset value (adjustable 50-95% of reference, delay 2-20 s; default 85% for 10 s) | Shutdown | |
| 32 | Reverse power shutdown | Adjustment range 5-20% of Standby kW rating, delay 1-15 s; default 10%, 3 s | Shutdown | |
| 46 | Negative sequence overcurrent warning | Protects generator from damage due to excessive imbalances in the three phase load currents and/or power factors | Warning | |
| 51 | Overcurrent warning/shutdown | Thermal damage curve with instantaneous trip level based on current transformer ratio and application power rating | Shutdown | |
| 51G | Ground fault overcurrent | Detects a ground fault via an external ground fault relay contact input or by measuring ground current from an external current transformer | Shutdown | |
| 59 | High AC voltage shutdown | Output voltage on any phase exceeds preset values (adjustable 105-125% of nominal, time delay 0.1-10 s; default 110% for 10 s) | Shutdown | |
| 81o | Over frequency shutdown/warning | Genset operating at a potentially damaging frequency level (adjustable 2-10 Hz above nominal, 1-20 s; default 6 Hz, 20 s, disabled) | Warning | |
| 81u | Under frequency shutdown | Genset output frequency cannot be maintained (adjustable 2-10 Hz below reference, 5-20 s delay; default 6 Hz, 10 s) | Shutdown | |
| 101 | IDLE MODE | Indicates the engine is operating in idle mode. Grounding the engine idle input causes generator build-up to be inhibited and the engine to be governed at 800 RPM. | Warning | When ground is removed from the input, the genset returns to normal speed and voltage. |
| 102 | EMERGENCY STOP | Indicates local or remote Emergency Stop. | Shutdown | Pull the button out (or turn clockwise to allow it to pop out). Move the Run/Off/Auto switch to Off. Press the Reset switch. Select Run or Auto, as required. |
| 111 | Internal ECM Failure | Internal ECM Failure | Shutdown | |
| 115 | No engine speed signal detected | No engine speed signal detected between pins 21 and 22 of Engine Harness Connector. | Shutdown | Engine is shut down and cannot be run. Common Alarm output is energized. |
| 121 | Engine Magnetic Crankshaft Speed or Position Lost One of Two Signals | Engine Magnetic Crankshaft Speed or Position Lost One of Two Signals | Warning | |
| 135 | High voltage at engine oil pressure sensor signal | High voltage detected at engine oil pressure sensor signal pin 12 of Engine Harness ECM Connector. | Warning | No effect on performance. Common Warning output is energized. |
| 141 | Low voltage at engine oil pressure sensor signal | Low voltage detected at engine oil pressure sensor signal pin 12 of Engine Harness ECM Connector. | Warning | No effect on performance. Common Warning output is energized. |
| 142 | Oil Overpressure | Oil Overpressure | Warning | |
| 143 | Low oil pressure warning | Engine oil pressure has dropped below the warning threshold for low oil pressure. | Warning | No effect on performance. Common Warning output is energized. Pre-low Oil Pressure relay driver is energized. |
| 144 | High voltage at engine coolant temperature sensor signal | High voltage detected at engine coolant temperature sensor signal pin 14 of Engine Harness ECM Connector. | Warning | No effect on performance. Common Warning output is energized. |
| 145 | Low voltage at engine coolant temperature sensor signal | Low voltage detected at engine coolant temperature sensor signal pin 14 of Engine Harness ECM Connector. | Warning | No effect on performance. Common Warning output is energized. |
| 146 | High coolant temperature warning | Engine coolant temperature has exceeded the warning threshold for high coolant temperature. | Warning | No effect on performance. Common Warning output is energized. Pre-High Coolant Temperature relay driver is energized. |
| 151 | High coolant temperature shutdown | Engine coolant temperature has exceeded the alarm (shut down) threshold for high coolant temperature. | Shutdown | Engine will shut down. Common Alarm output is energized. High Coolant Temperature relay driver is energized. |
| 155 | High Intake Manf 1 Temp | Engine has overheated (intake manifold temperature above shutdown trip point). | Shutdown | Review fault code 151 correction list for possible causes. |
| 171 | Fuel pump rack position fault | One or both of the left bank or right bank fuel pump racks is not at the commanded position. | Warning | Performance could be sluggish or slow to respond. Common Warning output is energized. |
| 196 | Low Coolant 1 Level | Engine coolant level has fallen below the trip point. | Warning | Check for coolant leaks and level; replenish if low; reset the control and restart. |
| 197 | Low Coolant Level | Engine coolant level has fallen below the trip point. | Warning | Check for coolant leaks and level; replenish if low; reset the control and restart. |
| 200 | LOW OIL PRESSURE | Indicates engine oil pressure has dropped to an unacceptable level. | Warning | If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow the 201-SHUTDOWN procedure. To check oil pressure, access the Oil Pressure menu prior to clearing the fault. |
| 201 | LOW OIL PRESSURE | Indicates engine oil pressure has dropped below the shutdown trip point. | Shutdown | Check oil level, lines and filters. If oil system is OK but oil level is low, replenish. Reset control and restart. Oil pressure limits are listed in Table 4-3. |
| 204 | OIL PRES SENDER | Indicates that the control has sensed that the engine oil pressure sender is out of its working range. | Warning | Check that the engine oil pressure sender is properly connected. |
| 210 | LOW COOLANT TEMP | Warning occurs when engine coolant temperature is 70 F (21 C) or lower. May be indicated even though coolant heaters are operating when ambient temperature falls below 40 F (4 C). | Warning | Check for coolant heater not connected to power supply (blown fuse or disconnected cord); check for low coolant level and replenish; check for open heater element (check current draw). |
| 211 | HIGH COOLANT TEMP | Indicates the engine coolant temperature is getting close to the recommended maximum temperature limit: 215 F (102 C) standby or 207 F (97 C) prime. | Warning | Reduce load if possible by turning off non-critical loads. Check air inlets and outlets and remove any obstructions to airflow. |
| 212 | HIGH COOLANT TEMP | Indicates engine has overheated (coolant temperature above the shutdown trip point: 223 F (106 C) standby or 215 F (102 C) prime). | Shutdown | Allow engine to cool completely. Check for obstructions to cooling airflow; check fan belt; check coolant mixture; check blower fan and circulation pumps on remote radiator installations; reset control and restart. |
| 213 | COOLANT SENDER | Indicates that the resistance of the coolant temperature sender is out of range. | Warning | Check the resistance of the sender. Resistance should be 500 to 2k ohms. |
| 214 | LOW COOLANT LVL | Indicates engine coolant level has fallen below the trip point. | Warning | Allow engine to cool completely. Check coolant level in both radiator and coolant recovery bottle and replenish if low; look for possible leakage points and repair. Reset control and restart. |
| 215 | LOW COOLANT LVL | Indicates engine coolant level has fallen below the trip point. LOW COOLANT LVL Shutdown will not occur if genset is in Idle mode (low coolant warning only). | Shutdown | Allow engine to cool completely. Check coolant level in radiator and coolant recovery bottle and replenish if low; repair leaks. Reset control and restart. |
| 220 | MAG PICKUP | Indicates mag pickup speed indication is not being sensed or does not match generator set output frequency. | Shutdown | Restart and check RPM on the digital display. |
| 221 | FAIL TO CRANK | Indicates possible fault with control or starting system. Engine will not crank. | Shutdown | Check fuse F3 on the Engine Interface board. Clean the battery cable terminals and tighten all connections. Recharge or replace the battery. |
| 222 | OVERCRANK | Indicates possible fuel system problem. Engine stops cranking. | Shutdown | Check for empty fuel tank, fuel leaks, or plugged fuel lines. Check for dirty fuel filter and replace if necessary. Check for dirty or plugged air filter and replace if necessary. Reset the control and restart. |
| 223 | OVERSPEED | Indicates engine has exceeded normal operating speed (115% ±1% of nominal). Engine runs and then shuts down. | Shutdown | Inspect the mechanical fuel linkage and repair or replace. Check the EFC for binding or damage. Replace governor output module (A38) or digital board (A32) as determined by monitoring the duty cycle. |
| 224 | FAIL TO SYNCHRONIZE | The generator set has not synchronized to the system bus within the allowable time frame. | | Check the governor system stability and adjust governing and synchronizer parameters as required. Check for fuel system problems which can cause engine instability. Synchronizing time can be improved by widening the synchronizing window and reducing the acceptance time delay. |
| 226 | FAIL TO CLOSE | Indicates that the paralleling breaker has been given a signal to close, but has not closed properly. | | Verify that the charging mechanism of the paralleling breaker is functioning properly. Check the close signal to the breaker. Verify that the auxiliary contact signals from the breaker to the PowerCommand control are operational. |
| 228 | Low Coolant Pressure | Low Coolant Pressure | Shutdown | |
| 230 | LOW DC VOLTAGE | Indicates battery voltage is below 10 VDC. | Warning | Recharge or replace the battery. Check the battery charger fuse. Clean and tighten or replace the battery cable terminals and cables. Check the engine DC alternator; replace if normal charging voltage is not obtained. |
| 231 | HIGH DC VOLTAGE | Indicates battery voltage exceeds 32 VDC. | Warning | Check the voltage float level on the battery charger (lower float level). Check the engine DC alternator; replace if normal charging voltage is not obtained. |
| 232 | WEAK BATTERY | Indicates battery voltage drops below 60% of nominal for two seconds during starting. | Warning | Discharged or defective battery. See Warning message 230, LOW DC VOLTAGE. |
| 234 | Engine overspeed | Engine speed sensor signal on pins 21 and 22 of Engine Harness ECM Connector indicates engine speed greater than alarm (shut down) threshold. | Shutdown | Fuel shutoff valves are de-energized (valves closed). Common Alarm output is energized. Overspeed relay driver is energized. |
| 235 | Low Coolant Level | Low Coolant Level input is active and threshold response is set to Shutdown. | Shutdown | Allow engine to cool completely; check for coolant leaks and level; replenish if low; reset control and restart. |
| 236 | Both Engine Speed Signals Lost | Both Engine Speed Signals Lost | Shutdown | |
| 240 | LOW FUEL-DAY | Indicates day tank fuel supply is running low. | Warning | Check fuel supply and replenish as required. |
| 241 | LOW FUEL | Indicates fuel supply is running low. | Warning | Check fuel supply and replenish as required. |
| 250 | EEPROM ERROR | Indicates PCC memory error. Data corruption of critical operating parameters. | Shutdown | Perform the initial start setup procedure. If the set shuts down on the same EEPROM ERROR message, replace the digital board (A32). |
| 251 | EEPROM ERROR | Indicates PCC memory error. Data corruption of noncritical operating parameters. | Warning | Perform the adjustment procedures, save the adjustments and reset the control. If the error persists perform the calibration procedures. If the error still persists replace the digital board (A32). |
| 252 | EEPROM ERROR | Indicates PCC memory error. Data corruption of noncritical operating parameters. | Warning | Verify the values or choices selected and repeat the save operation. If the error persists replace the digital board (A32). |
| 253 | Oil Level Low | Oil Level Low | Shutdown | |
| 260 | RACK POSITION | Indicates that one or both of the fuel racks is not at the commanded position. | | Check fuel pump connections. Check left and right actuator fuses (A38-F1 & F2) on the governor output module. |
| 261 | GROUND FAULT | Customer defined input closed to ground. The nature of the fault is an optional customer selection; fault functions can be programmed to initiate a shutdown or a warning. | | Isolate the source of the false signal. Disconnect the signal lead near the control and reset the control. Replace A34 or A32 as determined. |
| 262 | DAY TANK | Customer defined input closed to ground. The nature of the fault is an optional customer selection; fault functions can be programmed to initiate a shutdown or a warning. | | Isolate the source of the false signal. Disconnect the signal lead near the control and reset the control. Replace A34 or A32 as determined. |
| 263 | HIGH GEN TEMP | Customer defined input closed to ground. The nature of the fault is an optional customer selection; fault functions can be programmed to initiate a shutdown or a warning. | | Isolate the source of the false signal. Disconnect the signal lead near the control and reset the control. Replace A34 or A32 as determined. |
| 270 | PHASE ROTATION | The phase relationship between the generator set and the system bus is not matched. | Shutdown | Using a phase rotation checker, verify that the generator set phase rotation matches the phase orientation of the system bus. Verify that control wiring to the bus PT module on the PowerCommand control is properly connected. |
| 272 | FIRST START | The PowerCommand control is not receiving a proper signal from the system master first start sensor. The control reverts to a fallback mode in which breaker closure is automatically allowed if bus is de-energized. | Warning | Verify that the Master First Start Sensor is properly functioning (pulsing voltage present on the terminal). Verify the voltage pulse is present at the PowerCommand Control (terminal TB1-50) and repair interconnection wiring. |
| 301 | HIGH AC VOLTAGE | Indicates that one or more of the phase voltages has exceeded 130% of nominal, or has exceeded 110% of nominal for 10 seconds. | Shutdown | Determine if the output voltage the control sees is low or high. Isolate to the alternator/control, regulator module (A37)/A31/A32, PT/CT module (A36), customer interface board (A34), analog board (A33) or the generator per Table 4-30. |
| 303 | LOW AC VOLTAGE | Indicates that one or more of the phase voltages has dropped below 85% of nominal for 10 seconds. | Shutdown | Check PMG or field wiring, rotating rectifier assembly diodes, the load and connectors. Isolate to A32/A33, A37/A31, or A36/A33/A34 per Table 4-31. |
| 313 | UNDER FREQUENCY | Indicates that engine speed has dropped below 90% of nominal for 10 seconds. Five seconds before shutdown, a Load Dump signal is initiated. | Shutdown | Check fuel supply, intake air supply and load. Check Initial Setup (set size). Isolate to governor output module (A38), digital board (A32) or engine interface board (A31) per Table 4-32. |
| 320 | OVERCURRENT | Indicates that generator output current has exceeded 110% of rated for 60 seconds. | Warning | Check load and load lead connections. |
| 321 | OVERCURRENT | Indicates that generator output current has exceeded 110% of rated, and that a PCC time/current calculation has initiated an overcurrent shutdown. | Shutdown | Check load and load lead connections. |
| 322 | SHORT CIRCUIT | Indicates that generator output current has exceeded 175% of rated. | Shutdown | Check load and load lead connections. |
| 330 | OVERLOAD | Indicates that three-phase power output exceeds 105% of standby (or 115% of prime) rating. After five seconds the Load Dump output is activated; after 60 seconds the OVERLOAD warning is activated. | Warning | Check load and load lead connections. |
| 335 | REVERSE POWER | Indicates that power is flowing into the generator set rather than out from the unit. Can be caused by engine failure, inability to carry load, or control or interconnection problems. | Shutdown | Verify proper CT orientation, wiring and connections; verify proper connection of load sharing lines; verify the generator set is operating at the correct frequency and voltage per Table 4-34. |
| 337 | LOSS OF EXCITATION | Indicates that the alternator excitation system is improperly adjusted or has failed. May also be caused by operation of filters and power factor correction capacitors presenting a leading power factor load. | Shutdown | Start the generator set in RUN mode and check/calibrate output voltage. Check load sharing lines for proper interconnections. See Section 6 Servicing the Generator, Exciter Rectifier and Exciter Rotor. |
| 342 | Critical ECM memory checksum error | The ECM has detected a memory checksum error in the memory containing critical engine parameters. | Shutdown | Engine will shut down. Common Alarm output is energized. (ECM data may be lost, including fault code data, adjustable parameter settings, ECM time, and engine run time.) |
| 346 | Non-critical ECM memory checksum error | The ECM has detected a memory checksum error in the memory containing non-critical engine parameters. | Warning | None on performance. Common Warning output is energized. (ECM data may be lost, including fault code data, adjustable parameter settings, ECM time, and engine run time.) |
| 359 | Fail to Start | Possible fault with the control or starting system (engine cranks but fails to start). | Shutdown | Check fuel tank, leaks or blocked fuel lines; check/replace dirty fuel filter; check/replace dirty air filter; clean and tighten battery cable connections; recharge or replace battery; reset control and restart. |
| 401 | INVALID SETUP | Indicates the digital board is not properly calibrated for the generator set model (the model number corresponding to the cut resistor and the initial setup are not compatible). No initial setup data is saved. | | Refer to Digital Board (A32) Calibration in Section 5. |
| 402 | INVALID CAL | Indicates that the control senses that more than one calibration resistor has been cut. No initial setup data is saved. | | Refer to Digital Board (A32) Calibration in Section 5. |
| 415 | Low oil pressure shutdown | Engine oil pressure has dropped below the alarm (shut down) threshold for low oil pressure. | Shutdown | Engine will shut down. Common Alarm output is energized. Low Oil Pressure relay driver is energized. |
| 427 | CAN Data Link Degraded | Communication between the engine control (ECM) and the PCC is severed. | Warning | Ensure the E-Stop button is not active; reset the Local/Remote Emergency Stop. |
| 441 | Low Battery 1 Voltage | Battery voltage is below 24 VDC and approaching a low level at which unpredictable operation occurs. | Warning | Clean battery terminals and tighten connections; check electrolyte level, top up and recharge; recharge or replace discharged/defective battery. |
| 442 | High Battery 1 Voltage | Battery voltage to the control approaching a high level exceeding 32 VDC. | Warning | Clean battery terminals and tighten connections; check battery charge float level and lower if applicable. |
| 488 | High Intake Manf 1 Temp | Engine has overheated (intake manifold temperature above shutdown trip point). | Warning | Review fault code 151 correction list for possible causes. |
| 611 | Engine Hot Shut Down | An engine hot shutdown has occurred (cooldown timers bypassed). | Warning | Generator set should run at 10% or less load for three minutes before engine shutdown; avoid hot shutdown. |
| 649 | Engine Oil Change Needed | Engine Oil Change Needed | Info | |