Home > generac error code 1100

How do I fix Generac error code 1100?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

Generac error code 1100 is a code that indicates an issue with the fuel system. This error code can be caused by a variety of things, such as a dirty fuel filter, a clogged fuel line, or a problem with the fuel pump. If you see this error code, it's important to check the fuel system and make sure that everything is clean and working properly.

Users typically search for a solution by asking about:

  • generac error code 2100
  • error code 1100 generac
  • generac error code 1100

1. Check the oil level and add oil if needed

  1. Shut off power to the unit.
  2. Open the access panel on the top of the unit.
  3. Remove the oil level indicator assembly.
  4. Locate the oil level indicator tube.
  5. Remove the oil level indicator tube.
  6. Locate the oil level indicator screw.
  7. Rotate the oil level indicator screw to raise or lower the oil level indicator.
  8. Replace the oil level indicator assembly.
  9. Close the access panel.
  10. Reconnect the power to the unit.

2. Check the coolant level and add coolant if needed

  1. Check the coolant level. If it is low, add coolant.
  2. If the coolant level is still low, check the radiator cap and if it is loose, replace the radiator cap.
  3. Check the engine coolant system for blockages.
  4. If there are blockages, clear them using a hose.
  5. Reinstall the engine coolant system components.
  6. Recheck the coolant level.

3. Clean or replace the air filter

  1. Disconnect the power to the unit.
  2. Remove the cover on the front of the unit.
  3. Locate the air filter and remove it.
  4. Clean the filter with a clean cloth.
  5. Reinstall the filter in the same position.
  6. Reconnect the power to the unit.
  7. Test the unit to see if the error code has been corrected.

4. Clean or replace the spark plugs

  1. Remove all the wires from the spark plugs.
  2. Clean the electrodes and the insulator with a wire brush.
  3. Dry the electrodes and insulator with a cloth.
  4. Install the spark plugs in the engine.
  5. Apply a thin layer of engine oil over the electrodes.
  6. Install the spark plugs in the engine.
  7. Start the engine and check for spark.

5. Clean or replace the fuel filter

  1. Remove the fuel cap and remove any debris or dirt that may be blocking the filter.
  2. Inspect the fuel filter for damage or debris. If there is damage, replace the fuel filter.
  3. Insert a fuel filter wrench into the top of the fuel filter and turn it counterclockwise.
  4. Remove the fuel filter.
  5. Inspect the fuel filter for damage. If there is damage, replace the fuel filter.

6. Check the fuel line for leaks

To check the fuel line for leaks in order to fix generac error code 1100, the technician will need to isolate the fuel line from the generator. The technician will need to unscrew the fuel line connector at the generator and remove the fuel line. The technician will need to look for any signs of leakage and fix the issue if found.

If you didn't find success with an option above, then try:

  1. Check for loose or damaged wires and connections.
  2. Check the engine for carbon build-up.
  3. Have the engine serviced by a qualified technician.