The Power Zone is a generator-set controller. It is used on generator sets from Generac, John Deere and Magnum, including the MDG100DF4, MDG150, MDG175 and MDG250.
Used across brands: Generac, John Deere, Magnum
Also fitted to: Generac MDG20IF4 • MLG20IF4, Generac SG750/MG750.
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| 00230 | EMERGENCY STOP | ||
| 00383 | Exhaust Filter Cleaning enabled. | ||
| 1 | To Service | Oil Maintenance | |
| 10 | Fuel Level Sd — Fuel level is smaller than Sd Fuel Level setpoint. | ||
| 1048 | VSCF Overload — Unit shuts down during operation. | Alternator, AVR or wiring is damaged. | Contact Independent Authorized Servicing Dealer. |
| 1049 | VSCF Overload — Unit shuts down during operation. | Generator output is shorted or severely overloaded. | Identify and clear the overload, and then restart. |
| 1049 VSCF | Overload RED Unit shuts down during operation. | Check the LEDs/Screen for alarms. Generator output is shorted or severely overloaded. Identify and clear the overload, and then restart. | |
| 1051 | VSCF High Battery — Yellow LED illuminated in any state. | Voltage supply to the AVR is high. | If an external battery charger is in use, contact installing dealer to correct installation. If an external battery charger is NOT in use, contact Independent Authorized Servicing Dealer. |
| 1051 VSCF | High Battery YELLOW LED illuminated in any state. | Check the LEDs/Screen for alarms. Voltage supply to the AVR is high. If an external battery charger is in use, contact installing dealer to correct installation. If an external battery charger is NOT in use, contact Independent Authorized Servicing Dealer. | |
| 1052 | VSCF DC Overvoltage — Unit shuts down during operation. | The generator was temporarily overloaded; The output was temporarily shorted. | Try to restart the unit. |
| 1052 VSCF | DC Overvoltage RED Unit shuts down during operation. | Check the LEDs/Screen for alarms. Probable causes are: 1) The generator was temporarily overloaded. 2) The output was temporarily shorted. Try to restart the unit. | |
| 1053 | VSCF Gate Fault — Unit shuts down during operation or starting. | AVR is damaged. | Contact Independent Authorized Servicing Dealer. |
| 1053 VSCF | Gate Fault RED Unit shuts down during operation or starting. | Check the LEDs/Screen for alarms. AVR is damaged. Contact Independent Authorized Servicing Dealer. | |
| 1054 | VSCF IGBT Overtemp. — Unit shuts down during operation or starting. | Replace AVR filter. Inspect fan. | Replace AVR filter. Inspect fan. |
| 1055 | VSCF Phase Error — Unit shuts down during starting. | An incorrect voltage and frequency has been detected during starting. Alternator damage. | Contact Independent Authorized Servicing Dealer. |
| 1055 VSCF | Phase Error RED Unit shuts down during starting. | Check the LEDs/Screen for alarms. An incorrect voltage and frequency has been detected during starting. Probable causes are: 1) Alternator damage. Contact Independent Authorized Servicing Dealer. 2) Generator has started into a severe load. Manually operate generator breaker and try to restart unit. If problem persists, remove load and attempt to restart unit again. 3) The engine may not be reaching its prescribed speed. Proceed as follows: •Verify stepper motor is moving and linkage is free. •Verify stepper motor is plugged in. •Verify gas pressure is within specified limits. | |
| 1056 | VSCF Undervoltage — Unit shuts down during operation or starting. | The generator output voltage is too low. The load is too large. | Remove load and attempt to restart unit. |
| 1056 VSCF | Undervoltage RED Unit shuts down during operation or starting. | Check the LEDs/Screen for alarms. The generator output voltage is too low. Probable causes are: 1) The load is too large. Remove load and attempt to restart unit. 2) Alternator or AVR damage. Contact Independent Authorized Servicing Dealer. | |
| 1057 | VSCF Overvoltage — Unit shuts down during operation or starting. | The generator has been overloaded. | Remove load and attempt to restart unit. |
| 1057 VSCF | Overvoltage RED Unit shuts down during operation or starting. | Check the LEDs/Screen for alarms. Probable causes are: 1) The generator has been overloaded. Remove load and attempt to restart unit. 2) Generator has started into a severe load. Manually operate generator breaker and try to restart unit. If problem persists, remove load and attempt to restart unit again. | |
| 1058 | VSCF DC Undervoltage — Unit shuts down during operation or starting. | The DPE winding supplies this voltage. Alternator damage. | Contact Independent Authorized Servicing Dealer. |
| 1058 VSCF | DC Undervoltage RED Unit shuts down during operation or starting. | Check the LEDs/Screen for alarms. The DPE winding supplies this voltage. 1) Alternator damage. Contact Independent Authorized Servicing Dealer. | |
| 1059 | VSCF Field Loss — Unit shuts down during starting. | Unit detects no output voltage while starting. Alternator damage. | Contact Independent Authorized Servicing Dealer. |
| 1059 VSCF | Field Loss RED Unit shuts down during starting. | Check the LEDs/Screen for alarms. Unit detects no output voltage while starting. 1) Alternator damage. Contact Independent Authorized Servicing Dealer. | |
| 1060 | Big Fan Failure — Unit shuts down during operation. | This alarm occurs when the AVR electronics temperature exceeds 70 C. AVR filter faulty. | Replace AVR filter. |
| 1061 | VSCF Field Loss — Unit shuts down during operation. | Unit detects loss of output voltage while running. Alternator damage. | Contact Independent Authorized Servicing Dealer. |
| 1061 VSCF | Field Loss RED Unit shuts down during operation. | Check the LEDs/Screen for alarms. Unit detects loss of output voltage while running. 1) Alternator damage. Contact Independent Authorized Servicing Dealer. | |
| 1065 | Overfrequency — Unit shuts down during operation. | Overload. | Remove load and attempt to restart unit. |
| 1066 | VSCF Speed mismatch — Unit shuts down during Operation or starting. | Fuel problem (pressure loss). | Check fuel supply and attempt to restart unit. |
| 1066 VSCF | Speed mismatch RED Unit shuts down during Operation or starting. | Check the LEDs/Screen for alarms. Probable causes are: 1) Fuel problem (pressure loss). Check fuel supply and attempt to restart unit. 2) Large overload. Remove load and attempt to restart unit. 3) Throttle or engine problem. Contact Independent Authorized Servicing Dealer. | |
| 1070 | Small fan failure — "Small fan failure" is displayed. If unit was running in AUTO, it will continue to run for one hour to cool electronics without fan. | Small fan current incorrect. Fan wiring or mechanical problem. | Contact Independent Authorized Servicing Dealer. |
| 11 | Fuel Level Wrn — Fuel level is smaller than Wrn Fuel Level setpoint. | ||
| 12 | GCB fail — Failure of the generator circuit breaker. | ||
| 13 | Igen unbl — The generator current is unbalanced. | ||
| 14 | Low BackupBatt — RTC backup battery is flat. | ||
| 15 | Oil Press Sd — Oil pressure is smaller than Sd Oil Press setpoint. | ||
| 16 | Oil Press Wrn — Oil pressure is smaller than Wrn Oil Press setpoint. | ||
| 17 | Overload — The load is greater than the value given by Overload setpoint. | ||
| 18 | Overspeed — The protection comes active if the speed is greater than Overspeed setpoint. | ||
| 19 | ParamFail — Wrong checksum of parameters. Happens typically after downloading new firmware or changing of the parameter. The controller stays in INIT mode. | Wrong checksum of parameters; happens typically after downloading new firmware or changing of the parameter. | Check all parameters write at least one new parameter. |
| 2 | To Service | Fuel Maintenance | |
| 20 | PickupFault — Failure of the magnetic pick-up sensor for speed measurement. | ||
| 21 | Sd IOM fail — IOM/IGS-PTM module. | ||
| 22 | SprinkIActive — The protection is active if the output Sprinkler is closed. | ||
| 23 | Start failed — Gen-set start failed. | ||
| 24 | Stop fail — Gen-set stop failed. | ||
| 25 | Ubat — Battery voltage is out of limits given by Batt Overvolt and Batt Undervolt setpoints. | ||
| 26 | Underspeed — During starting of the engine, when the RPM reaches the value of Starting RPM setpoint, the starter is switched off and the speed of the engine can drop under Start RPM again. Then the underspeed protection becomes active. Protection evaluation starts 5 seconds after start up. | ||
| 27 | Vgen<, > — The generator voltage is out of limits given by Gen <V and Gen <V setpoints. | ||
| 3 | Battery Flat — If the controller switches off during starting sequence due to bad battery condition, it doesn't try to start again and activates this protection. | ||
| 3 | To Service | Air Maintenance | |
| 4 | Binary Input — Configurable warning/shutdown alarms on the inputs of IL-NT. | ||
| 5 | ChrgAlternFail — Failure of the alternator to charge the battery. | ||
| 6 | EmergencyStop — If the input Emergency Stop is opened (pushed in), shutdown is immediately activated. | ||
| 7 | Engine Temp Sd — Water temperature is greater than Sd Water Temp setpoint. | ||
| 8 | Engine Temp Wrn — Water temperature is greater than Wrn Water Temp setpoint. | ||
| 9 | Fgen<, > — The generator frequency is out of limits given by Gen >f and Gen <f setpoints. | ||
| FUSE PROBLEM | Unit will not start in AUTO with 2-wire start signal. | Check ATO 7.5 Amp fuse. Replace with same type fuse if bad. Contact Independent Authorized Servicing Dealer if fuse is good. | |
| FXXX | Indicates a fault state. The DVR stops providing excitation. | ||
| HIGH TEMPERATURE | Unit shuts down during operation. | Check ventilation around the intake, exhaust and rear of generator. Contact Independent Authorized Servicing Dealer if no obstruction is found. |
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.