Troubleshooting - Generac Power Systems iQ3500 Owner's Manual

Troubleshooting

PROBLEM
Engine won't start.
Engine starts, then shuts
down.
Engine will not start; or
starts and runs rough.*
No AC output.
Fuel leaks from drain
hoses.
* Engine speed increases and decreases — This is normal as generator starts up and loads vary.
Owner's Manual for Portable Generator
CAUSE
1. Dial turned off.
2. Out of fuel.
3. Defective spark plug.
4. Plugged fuel filter.
5. Defective or stuck Dial assem-
bly.
6. Incorrect engine oil level.
7. Defective ignition coil.
8. Fuel cap vent OFF.
9. Carb is flooded.
10. Throttle plate closed.
1. Out of fuel.
2. Incorrect engine oil level.
3. Contaminated fuel.
4. Defective low oil level switch.
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 carburet-
tor.
6. Unit not warmed up.
7. Spark arrestor clogged.
1. Generator is overloaded.
2. Inverter module is overheated.
3. Short circuit in electrical
device.
4. Defective inverter assembly.
1. Carburetor drain in bowl is not
closed.
CORRECTION
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).
1. Fill fuel tank.
2. Check engine oil level.
3. Contact IASD.
4. Contact IASD.
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.
1. Disconnect all loads. Shut
down generator to reset mod-
ule. Reduce loads, restart
generator.
2. Verify service door is ON. Let
cool 15 minutes by running
engine without AC output.
Press and hold Reset button
on control panel, restart gener-
ator.
3. Verify condition of extension
cords and items being pow-
ered. Press and hold Reset
button on control panel.
4. Contact IASD.
1. Turn valve clockwise to close.
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