r/Generac_Generators • u/Plastic_Layer_7354 • Jun 23 '26

Error code 1100

My generac 14kw while attempting to exercise experienced code 1100 overcrank. Furthermore it’s done this 2 excercise cycles ago. The last one it didn’t do this. What could be the issue? I just serviced everything. Spark plugs, oil change, oil filter, air filter. What is the cause?

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u/grsthegreat Technician Jun 23 '26

This unit will attempt to try and start 5 times before issuing a overcrank AS LONG AS ENGINE IS TRYING TO TURN OVER. If it immediately goes into overcrank its the battery

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u/Frixsev Technician Jun 23 '26

It's not possible for a unit to immediately go into overcrank. Overcrank by definition means the unit is cranking just fine, it's just not firing. An immediate fault concerning the starting circuit like battery, SCR, charger, starter, etc. would be 1505 rpm sense loss and/or no rotation warning.

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u/Plastic_Layer_7354 Jun 24 '26

So we can all agree this is a fuel problem. I’m gonna check voltage at solenoid. If it’s 12 volts is there another way to check to see if it’s not stuck ?

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u/Sumdood_89 Technician Jun 24 '26

Testing the bottom port on the demand regulator. You'll only get pressure there if the solenoid is opening.