Onan · 25 codes

Cummins Onan QG 7000i dual-fuel inverter generator fault codes

Every fault code, display message, and status light listed in Onan's manuals and support pages for QG 7000i DF (HGLCA Spec A). Select a code for what it means, what you can safely check, and when to call a technician.

Confirm your model

Codes are model-specific. Match the model number on the appliance data label to one of these before using the table:

QG 7000i DF HGLCA Spec A

Where to look and what to record

generator model/spec
hour meter
fault blink count
loads running when the shutdown occurred

Code table

Code	What the manufacturer says
1	Engine Temperature Exceeded Limit
4	Over Crank
6	Low Oil Pressure
12	Over Voltage
13	Under Voltage
14	Over Frequency
15	Under Frequency
19	Actuator Circuit Fault
25	Alternator Overvoltage
26	Alternator Undervoltage
27	PMA Sense Lost
29	High Battery Voltage
31	Over Speed
34	Inverter temperature Exceeded Limit
36	Other Faults
38	Over Current (Field Overload)
43	ECU Fault
45	Speed Sense
52	Fuel Injector or IPM Pump Circuit Fault
53	Oil Temperature Sensor Circuit Fault
54	MAT Sensor
57	Over Prime Or LPG Pressure Sensor Fault, The LPG Solenoid Valve Fault
73	AC Output Circuit Fault
81	Alternator Stator Circuit Fault
85	Oxygen Sensor Fault

Generators can produce carbon monoxide, hot surfaces, fuel hazards, moving-part hazards, and lethal voltage. Shut the generator down and do not open energized compartments unless qualified.

Troubleshooting guides

Official manuals and support pages

OnanCummins Onan RV Generator Manuals OnanCummins Onan QG 7000i DF HGLCA Spec A Operator Manual A079E225