Generac IQ3500 troubleshooting: 26 fault codes and symptom-cause-remedy entries from the manufacturer's own service documentation.
Generac IQ3500 — full specs, parts & maintenance.
| Code | Meaning | Remedy |
|---|---|---|
| 14 | Output Fault | |
| 008034 | Fault Output M | |
| 007846 | Output Fault | |
| 000141 | Accidental start-up. Disconnect spark plug wires when working on unit. | Disconnect spark plug wires before working on unit. |
| 002404 | Inspect Spark Arrestor Screen | Inspect and clean the screen every 50 hours of operation or every season, whichever comes first. |
| 007634 | (000209b) Fallecimiento. Este producto no se ha diseñado para que se utilice en aplicaciones de apoyo vital crítico. En caso de hacerlo, podría provocar la muerte o lesiones graves. | |
| 23 | Electrical Trip | Check the system for any faults and correct them before restarting. |
| 18 | Oil Level Low | Add oil to the specified level before restarting. |
| 19 | Overload | Reduce load or check if the generator is overloaded. |
| 22 | Oil Level Low | Add oil to the specified level before restarting. |
| 007843 | OUTPUT FAULT | |
| 005483 | Daños a los equipos y la propiedad. |
| Symptom | Cause | Remedy |
|---|---|---|
| Engine fires, but does not continue to run | Rotate the Off/On/Choke dial to OFF and repeat starting instructions. | |
| Engine won't start. | 1. Dial turned off. 2. Out of fuel. 3. Defective spark plug. 4. Plugged fuel filter. 5. Defective or stuck Dial assembly. 6. Incorrect engine oil level. 7. Defective ignition coil. 8. Fuel cap vent OFF. 9. Carb is flooded. 10. Throttle plate closed. | 1. Turn on Dial. 2. Fill fuel tank. 3. Replace spark plug. 4. Replace fuel and fuel filter. 5. Contact IASD. 6. Check/fill engine oil. 7. Contact IASD. 8. Turn fuel cap vent ON. 9. Drain carb. 10. Open throttle plate (push toward back of unit). |
| Engine starts, then shuts down. | 1. Out of fuel. 2. Incorrect engine oil level. 3. Contaminated fuel. 4. Defective low oil level switch. | 1. Fill fuel tank. 2. Check engine oil level. 3. Contact IASD. 4. Contact IASD. |
| Engine will not start; or starts and runs rough.* | 1. Choke is stuck or left on. 2. Dirty or clogged air filter. 3. Defective or dirty spark plug. 4. Dirty fuel filter. 5. Dirty or gummed up carburetor. 6. Unit not warmed up. 7. Spark arrestor clogged. | 1. Turn choke off. 2. Clean or replace air filter. 3. Replace spark plug. 4. Replace fuel and fuel filter. 5. Clean carburetor. 6. Gradually adjust Dial and reduce choke until engine runs smoothly in RUN position. 7. Clean spark arrestor. |
| No AC output. | 1. Generator is overloaded. 2. Inverter module is overheated. 3. Short circuit in electrical device. 4. Defective inverter assembly. | 1. Disconnect all loads. Shut down generator t |
| No AC Output | BAD REPAIR OR REPLACE COMPONENT, BAD REPAIR OR REPLACE WIRE | REPLACE INVERTER MODULE |
| No DC Output (iX Units Only) | REPLACE INVERTER MODULE | |
| Overload Light Is On | DISCONNECT LOAD, RESTART ENGINE AND CHECK AC OUTPUT AGAIN. (iX Units) DISCONNECT LOAD, PRESS AND HOLD RESET BUTTON, THEN RELEASE. IF OVERLOAD LIGHT GOES OUT, LOAD IS TO MUCH FOR THE UNIT. (iQ2000) | |
| Engine Will Not Pull Start | NOTHING FOUND, BAD REPLACE COMPONENT, VISUALLY INSPECT FOR OBSTRUCTIONS THAT WOULD CAUSE BINDING OF THE RECOIL ONCE INSTALLED | |
| Flex Power/Mode Feature is Not Responding | REPLACE INVERTER MODULE, REPLACE SWITCH, TEST FLEX POWER/MODE SWITCH | |
| Engine Will Not Start | REPLACE CARBURETOR, REPLACE FUEL PUMP, REPAIR OR REPLACE STATOR, REPLACE IGNITION WINDING | |
| Engine Hunts / Erratic Idle or Will Not Come Up to Speed | Problem 7 | |
| Unit Shuts Down for Low Oil | Problem 8 | |
| LED Display INOP | Replace LED MODULE |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Documented causes: 1. Dial turned off. 2. Out of fuel. 3. Defective spark plug. 4. Plugged fuel filter. 5. Defective or stuck Dial assembly. 6. Incorrect engine oil level. 7. Defective ignition coil. 8. Fuel cap vent OFF. 9. Carb is flooded. 10. Throttle plate closed.. See the table for the matching fixes.
Documented causes: 1. Out of fuel. 2. Incorrect engine oil level. 3. Contaminated fuel. 4. Defective low oil level switch.. See the table for the matching fixes.
Documented causes: 1. Choke is stuck or left on. 2. Dirty or clogged air filter. 3. Defective or dirty spark plug. 4. Dirty fuel filter. 5. Dirty or gummed up carburetor. 6. Unit not warmed up. 7. Spark arrestor clogged.. See the table for the matching fixes.