Himoinsa
Himoinsa 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
The generator controller displays E01, and the engine does not crank when an automatic start signal is present.
Emergency Stop Active / External Shutdown Circuit Open
E02
The controller shows E02, and the engine cranks but does not start, then locks out after several attempts.
Low Fuel Level / Fuel Supply Fault
E03
The generator shuts down shortly after starting and displays E03 on the controller.
Low Oil Pressure Shutdown
E04
The controller shows E04, and the engine shuts down after running for a short period, especially under load.
High Engine Coolant Temperature
E05
The generator controller displays E05, and the engine shuts down abruptly during operation.
Overspeed Shutdown
E06
The controller shows E06, and the generator will not start or shuts down shortly after starting.
Low Battery Voltage / Battery Failure
E07
The generator controller indicates E07, and the engine does not crank when a start command is given.
Starter Motor Circuit Fault
E08
The controller shows E08, and the generator shuts down or refuses to connect to the load.
Low Oil Level in Engine Sump
E09
The generator controller displays E09, and the engine shuts down during operation.
Fuel Leak / Fuel Pressure Fault
E10
Controller shows E10 and the generator will not start in automatic mode from the ATS.
Remote Start Signal Fault / ATS Communication Error
E11
Generator controller indicates E11 and the engine shuts down after a few seconds of running.
No Engine Speed Signal / RPM Sensor Failure
E12
Controller shows E12 and the generator does not accept load from the ATS.
Generator Undervoltage Protection
E13
Generator controller displays E13 and trips off load during operation.
Generator Overvoltage Protection
E14
Controller shows E14 and the generator trips off load or refuses to close the breaker.
Generator Overfrequency Protection
E15
Generator controller indicates E15 and the unit shuts down or will not start.
Emergency Stop Circuit Short / Internal Safety Loop Fault
E16
Controller shows E16 and the generator shuts down after running for some time.
High Alternator Winding Temperature
E17
Generator controller displays E17 and the unit will not start or shuts down.
Coolant Level Low in Expansion Tank
E18
Controller shows E18 and the generator breaker does not close to supply load.
Phase Sequence / Rotation Error
E19
Generator controller indicates E19 and trips the generator off load.
Overcurrent / Overload Protection
E20
The controller displays E20, and the generator shuts down during cranking or immediately after starting.
Low Cranking Speed / Engine Start Failure
E21
The generator controller displays E21, and the unit will not start in automatic mode.
Controller Internal Fault / Configuration Error
E22
The controller displays E22, and the generator shuts down after running under load.
Fuel Day Tank Low Level / Transfer Failure
E23
The generator controller indicates E23, and the unit trips off load intermittently.
Earth Fault / Ground Fault Protection
E24
The controller displays E24, and the generator shuts down during operation, often with black smoke.
High Exhaust Temperature
E25
The generator controller displays E25, and the unit will not synchronize or close the breaker in parallel applications.
Synchronization Failure (Voltage/Frequency/Phase Mismatch)
E26
The controller displays E26, and the generator shuts down shortly after starting, with white smoke from the exhaust.
Preheat / Glow Plug Fault (Cold Start Failure)
E27
The generator controller indicates E27, and the unit trips off load with a loud mechanical noise.
Mechanical Overspeed Trip (Mechanical Governor / Flyweight Fault)
E28
The controller displays E28, and the generator will not start; the fuel pump does not run.
Fuel Solenoid / Stop Solenoid Fault
E29
The generator controller displays E29, and the unit shuts down with visible coolant around the base.
Coolant Leak / Expansion Tank Overflow
E30
The controller displays E30, and the generator shuts down with a strong fuel smell in the enclosure.
Fuel Tank Overfill / Fuel in Bund Alarm
Symptom
A noticeable fuel smell is present around the Himoinsa generator even when it is not running.
Static Fuel Leak in Supply or Return System
Symptom
Generator enclosure shows signs of corrosion and electrical components have intermittent faults, especially in humid conditions.
Moisture Ingress / Condensation in Control Panel
Symptom
Generator runs but the battery repeatedly goes flat between test runs.
Battery Charging System Underperformance
Symptom
Generator will not start automatically after a mains failure, but starts normally in manual mode.
Automatic Mode / ATS Control Logic Issue
Symptom
The generator canopy is excessively hot to the touch, and internal components show signs of heat stress, but no overtemperature code is active.
Inadequate Ventilation / Cooling Airflow Restriction
Symptom
The generator cranks normally but will not start; no error code is displayed on the Himoinsa controller.
Air in Fuel System / Loss of Prime
Symptom
The generator is running but does not take load; the ATS remains on mains even though mains power is present and within limits.
Generator Breaker Fails to Close / Mechanical Interlock Issue
Symptom
The generator leaks oil onto the base frame during or after operation.
Engine Lubrication System Leak
Symptom
The generator produces a whining or humming noise from the alternator area under load.
Alternator Bearing Wear / Electrical Vibration
Symptom
The generator starts and runs, but frequency and voltage fluctuate noticeably, causing lights to flicker.
Unstable Governor or AVR Regulation
Symptom
The generator starts but produces excessive black smoke from the exhaust under load.
Overfueling / Restricted Air Intake
Symptom
The generator vibrates excessively during operation, causing the canopy and frame to shake.
Engine-Alternator Misalignment / Mounting Fault
Symptom
Visible white smoke and coolant loss from the exhaust area during generator operation.
Internal Coolant Leak / Head Gasket Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
The generator controller displays E01, and the engine does not crank when an automatic start signal is present.
|
Emergency Stop Active / External Shutdown Circuit Open | View Details |
| E02 |
The controller shows E02, and the engine cranks but does not start, then locks out after several attempts.
|
Low Fuel Level / Fuel Supply Fault | View Details |
| E03 |
The generator shuts down shortly after starting and displays E03 on the controller.
|
Low Oil Pressure Shutdown | View Details |
| E04 |
The controller shows E04, and the engine shuts down after running for a short period, especially under load.
|
High Engine Coolant Temperature | View Details |
| E05 |
The generator controller displays E05, and the engine shuts down abruptly during operation.
|
Overspeed Shutdown | View Details |
| E06 |
The controller shows E06, and the generator will not start or shuts down shortly after starting.
|
Low Battery Voltage / Battery Failure | View Details |
| E07 |
The generator controller indicates E07, and the engine does not crank when a start command is given.
|
Starter Motor Circuit Fault | View Details |
| E08 |
The controller shows E08, and the generator shuts down or refuses to connect to the load.
|
Low Oil Level in Engine Sump | View Details |
| E09 |
The generator controller displays E09, and the engine shuts down during operation.
|
Fuel Leak / Fuel Pressure Fault | View Details |
| E10 |
Controller shows E10 and the generator will not start in automatic mode from the ATS.
|
Remote Start Signal Fault / ATS Communication Error | View Details |
| E11 |
Generator controller indicates E11 and the engine shuts down after a few seconds of running.
|
No Engine Speed Signal / RPM Sensor Failure | View Details |
| E12 |
Controller shows E12 and the generator does not accept load from the ATS.
|
Generator Undervoltage Protection | View Details |
| E13 |
Generator controller displays E13 and trips off load during operation.
|
Generator Overvoltage Protection | View Details |
| E14 |
Controller shows E14 and the generator trips off load or refuses to close the breaker.
|
Generator Overfrequency Protection | View Details |
| E15 |
Generator controller indicates E15 and the unit shuts down or will not start.
|
Emergency Stop Circuit Short / Internal Safety Loop Fault | View Details |
| E16 |
Controller shows E16 and the generator shuts down after running for some time.
|
High Alternator Winding Temperature | View Details |
| E17 |
Generator controller displays E17 and the unit will not start or shuts down.
|
Coolant Level Low in Expansion Tank | View Details |
| E18 |
Controller shows E18 and the generator breaker does not close to supply load.
|
Phase Sequence / Rotation Error | View Details |
| E19 |
Generator controller indicates E19 and trips the generator off load.
|
Overcurrent / Overload Protection | View Details |
| E20 |
The controller displays E20, and the generator shuts down during cranking or immediately after starting.
|
Low Cranking Speed / Engine Start Failure | View Details |
| E21 |
The generator controller displays E21, and the unit will not start in automatic mode.
|
Controller Internal Fault / Configuration Error | View Details |
| E22 |
The controller displays E22, and the generator shuts down after running under load.
|
Fuel Day Tank Low Level / Transfer Failure | View Details |
| E23 |
The generator controller indicates E23, and the unit trips off load intermittently.
|
Earth Fault / Ground Fault Protection | View Details |
| E24 |
The controller displays E24, and the generator shuts down during operation, often with black smoke.
|
High Exhaust Temperature | View Details |
| E25 |
The generator controller displays E25, and the unit will not synchronize or close the breaker in parallel applications.
|
Synchronization Failure (Voltage/Frequency/Phase Mismatch) | View Details |
| E26 |
The controller displays E26, and the generator shuts down shortly after starting, with white smoke from the exhaust.
|
Preheat / Glow Plug Fault (Cold Start Failure) | View Details |
| E27 |
The generator controller indicates E27, and the unit trips off load with a loud mechanical noise.
|
Mechanical Overspeed Trip (Mechanical Governor / Flyweight Fault) | View Details |
| E28 |
The controller displays E28, and the generator will not start; the fuel pump does not run.
|
Fuel Solenoid / Stop Solenoid Fault | View Details |
| E29 |
The generator controller displays E29, and the unit shuts down with visible coolant around the base.
|
Coolant Leak / Expansion Tank Overflow | View Details |
| E30 |
The controller displays E30, and the generator shuts down with a strong fuel smell in the enclosure.
|
Fuel Tank Overfill / Fuel in Bund Alarm | View Details |
| – |
A noticeable fuel smell is present around the Himoinsa generator even when it is not running.
|
Static Fuel Leak in Supply or Return System | View Details |
| – |
Generator enclosure shows signs of corrosion and electrical components have intermittent faults, especially in humid conditions.
|
Moisture Ingress / Condensation in Control Panel | View Details |
| – |
Generator runs but the battery repeatedly goes flat between test runs.
|
Battery Charging System Underperformance | View Details |
| – |
Generator will not start automatically after a mains failure, but starts normally in manual mode.
|
Automatic Mode / ATS Control Logic Issue | View Details |
| – |
The generator canopy is excessively hot to the touch, and internal components show signs of heat stress, but no overtemperature code is active.
|
Inadequate Ventilation / Cooling Airflow Restriction | View Details |
| – |
The generator cranks normally but will not start; no error code is displayed on the Himoinsa controller.
|
Air in Fuel System / Loss of Prime | View Details |
| – |
The generator is running but does not take load; the ATS remains on mains even though mains power is present and within limits.
|
Generator Breaker Fails to Close / Mechanical Interlock Issue | View Details |
| – |
The generator leaks oil onto the base frame during or after operation.
|
Engine Lubrication System Leak | View Details |
| – |
The generator produces a whining or humming noise from the alternator area under load.
|
Alternator Bearing Wear / Electrical Vibration | View Details |
| – |
The generator starts and runs, but frequency and voltage fluctuate noticeably, causing lights to flicker.
|
Unstable Governor or AVR Regulation | View Details |
| – |
The generator starts but produces excessive black smoke from the exhaust under load.
|
Overfueling / Restricted Air Intake | View Details |
| – |
The generator vibrates excessively during operation, causing the canopy and frame to shake.
|
Engine-Alternator Misalignment / Mounting Fault | View Details |
| – |
Visible white smoke and coolant loss from the exhaust area during generator operation.
|
Internal Coolant Leak / Head Gasket Failure | View Details |
No matching codes found
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