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Home / Generac / 1100

Evolution 1.0 / 2.0

1100

Overcrank

Engine · Alarm

Alarm 1100 means the engine cranks but does not start. The Evolution table describes five crank attempts: the unit turns over, and the controller is receiving a signal on wire 18, but the engine does not start.

Seen on: Air-cooled home standby generators with an Evolution 1.0 or 2.0 controller.

Likely causes

  • Fuel supply shut off, or an LP tank that is empty.
  • Maintenance items that keep a cranking engine from firing.
  • The controller has confirmed cranking, so this is not a 'no crank' complaint.

Checks an owner can do

  1. Confirm the fuel supply valve is open. On LP, confirm the tank is not empty.
  2. Stop after the controller locks out. Do not hold the starter in to force another cycle.
  3. Write down the code before you clear it.

When to call a pro

If fuel is present and 1100 returns, the rest of the no-start checks (spark, mixer, valves, compression) belong in the diagnostic manual's Problem 17 path. That is technician work.

Source

Generac Diagnostic Repair Manual 10000041488 (Evolution 1.0/2.0 air-cooled). E-code rows below match that manual's alarm table as published by Home Generators for Sale and the manual text extracted from document 10000041488.

Wording follows that document. Firmware can change a threshold. If this page and the manual shipped with your unit disagree, follow the manual.

What fixed mine

No approved reports for this code yet. Send one. It stays in the review queue until it is approved.

Related Generac codes

https://generatorcodes.com/brand/generac/1100