Winco
Winco Standby Generators Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Generator will not start and controller displays E01 / OVERCRANK after multiple failed start attempts.
Overcrank / Failed Start
E02
Generator shuts down shortly after starting and controller displays E02 / LOW OIL PRESSURE.
Low Oil Pressure Shutdown
E03
Controller shows E03 / HIGH ENGINE TEMPERATURE and the generator shuts down after running under load.
High Engine Temperature Shutdown
E04
Controller displays E04 / OVERSPEED and the generator shuts down abruptly during or shortly after start.
Engine Overspeed Protection Trip
E05
Controller shows E05 / UNDERSPEED or UNDERFREQUENCY and the generator shuts down or will not accept load.
Engine Underspeed / Underfrequency Fault
E06
Controller displays E06 / LOW BATTERY VOLTAGE and the generator may fail to start or crank slowly.
Low DC Battery Voltage
E07
Controller shows E07 / HIGH BATTERY VOLTAGE or BATTERY OVERVOLT and may disable charging.
Battery Overvoltage Condition
E08
Controller displays E08 / LOW AC VOLTAGE while running, and the generator may drop load or shut down.
Low Generator Output Voltage
E09
Controller shows E09 / HIGH AC VOLTAGE and may immediately trip the generator offline.
High Generator Output Voltage
E10
Controller displays E10 / UNDERFREQUENCY or 50/60 Hz FAULT while running.
Frequency Out of Range
E11
Controller shows E11 / PHASE LOSS or PHASE IMBALANCE on three-phase Winco standby generator.
Phase Loss / Phase Imbalance Fault
E12
Controller displays E12 / GROUND FAULT or GROUND LEAKAGE and trips the generator offline.
Ground Fault Detection Trip
E13
Controller shows E13 / EMERGENCY STOP ACTIVE and the generator will not start.
Emergency Stop Circuit Open
E14
Controller displays E14 / CONTROL FUSE BLOWN or DC FUSE FAULT and the unit is dead or partially functional.
Control Circuit Fuse Failure
E15
Controller shows E15 / STARTER FAULT or STARTER LOCKOUT after a start attempt.
Starter Circuit Fault
E16
Controller displays E16 / IGNITION FAULT or NO IGNITION after cranking.
Ignition System Failure
E17
Controller shows E17 / FUEL PRESSURE LOW or FUEL SUPPLY FAULT and the engine stalls or will not start.
Low Fuel Pressure / Fuel Supply Fault
E18
Controller displays E18 / AIR FILTER or INTAKE RESTRICTION warning and engine performance is poor.
Air Intake Restriction
E19
Controller shows E19 / OIL CHANGE DUE or MAINTENANCE DUE reminder.
Scheduled Maintenance Reminder
E20
Controller displays E20 / CONTROLLER COMMUNICATION ERROR or CAN BUS FAULT.
Controller Communication Failure
Symptom
Battery repeatedly goes dead between weekly exercise runs.
Chronic Battery Discharge
Symptom
Block heater on Winco standby generator is cold; engine is hard to start in cold weather.
Engine Block Heater Failure
Symptom
Clicking or chattering noise from transfer switch when utility power is present.
Transfer Switch Contactor Chatter
Symptom
Corrosion and rust visible inside generator enclosure, especially on electrical terminals.
Moisture Intrusion / Corrosion Damage
Symptom
Excessive engine vibration and shaking of the Winco generator enclosure during operation.
Abnormal Vibration
Symptom
Generator cranks but will not start; no error code displayed on Winco controller.
No-Start Condition Without Fault Code
Symptom
Generator fails to run its scheduled weekly exercise test.
Exercise Timer / Auto Start Failure
Symptom
Generator leaks oil onto the concrete pad or inside the enclosure.
Engine Oil Leak
Symptom
Generator runs but house lights flicker or dim when large loads start.
Voltage Sag Under Load
Symptom
Generator runs but produces no AC output voltage at the terminals.
Loss of Excitation / No Output
Symptom
Generator shuts down when large motor loads (well pump, AC) start, but restarts and runs with smaller loads.
Load Step Trip / Overload Shutdown
Symptom
Generator starts and runs but does not transfer power to the house; lights remain off during outage.
No Load Transfer / Transfer Switch Not Engaging
Symptom
Generator starts and stops repeatedly in short cycles without transferring load.
Short Cycling / Nuisance Start-Stop
Symptom
High-pitched whining or growling noise from alternator end of generator.
Alternator Bearing Wear
Symptom
Loud knocking or metallic banging noise from engine area while running.
Internal Engine Knock
Symptom
Strong fuel gas smell around Winco standby generator, especially during or after operation.
Fuel Gas Leak
Symptom
Visible arcing or burning smell from inside transfer switch during operation.
Transfer Switch Contact Damage
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Generator will not start and controller displays E01 / OVERCRANK after multiple failed start attempts.
|
Overcrank / Failed Start | View Details |
| E02 |
Generator shuts down shortly after starting and controller displays E02 / LOW OIL PRESSURE.
|
Low Oil Pressure Shutdown | View Details |
| E03 |
Controller shows E03 / HIGH ENGINE TEMPERATURE and the generator shuts down after running under load.
|
High Engine Temperature Shutdown | View Details |
| E04 |
Controller displays E04 / OVERSPEED and the generator shuts down abruptly during or shortly after start.
|
Engine Overspeed Protection Trip | View Details |
| E05 |
Controller shows E05 / UNDERSPEED or UNDERFREQUENCY and the generator shuts down or will not accept load.
|
Engine Underspeed / Underfrequency Fault | View Details |
| E06 |
Controller displays E06 / LOW BATTERY VOLTAGE and the generator may fail to start or crank slowly.
|
Low DC Battery Voltage | View Details |
| E07 |
Controller shows E07 / HIGH BATTERY VOLTAGE or BATTERY OVERVOLT and may disable charging.
|
Battery Overvoltage Condition | View Details |
| E08 |
Controller displays E08 / LOW AC VOLTAGE while running, and the generator may drop load or shut down.
|
Low Generator Output Voltage | View Details |
| E09 |
Controller shows E09 / HIGH AC VOLTAGE and may immediately trip the generator offline.
|
High Generator Output Voltage | View Details |
| E10 |
Controller displays E10 / UNDERFREQUENCY or 50/60 Hz FAULT while running.
|
Frequency Out of Range | View Details |
| E11 |
Controller shows E11 / PHASE LOSS or PHASE IMBALANCE on three-phase Winco standby generator.
|
Phase Loss / Phase Imbalance Fault | View Details |
| E12 |
Controller displays E12 / GROUND FAULT or GROUND LEAKAGE and trips the generator offline.
|
Ground Fault Detection Trip | View Details |
| E13 |
Controller shows E13 / EMERGENCY STOP ACTIVE and the generator will not start.
|
Emergency Stop Circuit Open | View Details |
| E14 |
Controller displays E14 / CONTROL FUSE BLOWN or DC FUSE FAULT and the unit is dead or partially functional.
|
Control Circuit Fuse Failure | View Details |
| E15 |
Controller shows E15 / STARTER FAULT or STARTER LOCKOUT after a start attempt.
|
Starter Circuit Fault | View Details |
| E16 |
Controller displays E16 / IGNITION FAULT or NO IGNITION after cranking.
|
Ignition System Failure | View Details |
| E17 |
Controller shows E17 / FUEL PRESSURE LOW or FUEL SUPPLY FAULT and the engine stalls or will not start.
|
Low Fuel Pressure / Fuel Supply Fault | View Details |
| E18 |
Controller displays E18 / AIR FILTER or INTAKE RESTRICTION warning and engine performance is poor.
|
Air Intake Restriction | View Details |
| E19 |
Controller shows E19 / OIL CHANGE DUE or MAINTENANCE DUE reminder.
|
Scheduled Maintenance Reminder | View Details |
| E20 |
Controller displays E20 / CONTROLLER COMMUNICATION ERROR or CAN BUS FAULT.
|
Controller Communication Failure | View Details |
| – |
Battery repeatedly goes dead between weekly exercise runs.
|
Chronic Battery Discharge | View Details |
| – |
Block heater on Winco standby generator is cold; engine is hard to start in cold weather.
|
Engine Block Heater Failure | View Details |
| – |
Clicking or chattering noise from transfer switch when utility power is present.
|
Transfer Switch Contactor Chatter | View Details |
| – |
Corrosion and rust visible inside generator enclosure, especially on electrical terminals.
|
Moisture Intrusion / Corrosion Damage | View Details |
| – |
Excessive engine vibration and shaking of the Winco generator enclosure during operation.
|
Abnormal Vibration | View Details |
| – |
Generator cranks but will not start; no error code displayed on Winco controller.
|
No-Start Condition Without Fault Code | View Details |
| – |
Generator fails to run its scheduled weekly exercise test.
|
Exercise Timer / Auto Start Failure | View Details |
| – |
Generator leaks oil onto the concrete pad or inside the enclosure.
|
Engine Oil Leak | View Details |
| – |
Generator runs but house lights flicker or dim when large loads start.
|
Voltage Sag Under Load | View Details |
| – |
Generator runs but produces no AC output voltage at the terminals.
|
Loss of Excitation / No Output | View Details |
| – |
Generator shuts down when large motor loads (well pump, AC) start, but restarts and runs with smaller loads.
|
Load Step Trip / Overload Shutdown | View Details |
| – |
Generator starts and runs but does not transfer power to the house; lights remain off during outage.
|
No Load Transfer / Transfer Switch Not Engaging | View Details |
| – |
Generator starts and stops repeatedly in short cycles without transferring load.
|
Short Cycling / Nuisance Start-Stop | View Details |
| – |
High-pitched whining or growling noise from alternator end of generator.
|
Alternator Bearing Wear | View Details |
| – |
Loud knocking or metallic banging noise from engine area while running.
|
Internal Engine Knock | View Details |
| – |
Strong fuel gas smell around Winco standby generator, especially during or after operation.
|
Fuel Gas Leak | View Details |
| – |
Visible arcing or burning smell from inside transfer switch during operation.
|
Transfer Switch Contact Damage | View Details |
No matching codes found
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