Generac

LOW BATTERY ALARM

UnclassifiedElectrical

What This Code Means

Low Battery alarm is on

Possible Causes

  • •Battery voltage below 12.2 VDC for one minute
  • •Battery voltage drops below 6 VDC during a crank cycle
  • •Bad battery
  • •Incorrect 120 VAC input connection

Suggested Actions

  1. 1Check battery conditions
  2. 2Verify battery voltage is above 12.8 VDC at J2 Pin 5 (Wire 15E)
  3. 3Inspect and replace battery if faulty
  4. 4Ensure 120 VAC input is connected at the customer connection box for the battery charger to function.

Related Generac Fault Codes

LOW FUEL (10%)LOW FUEL (20%)LOW BATTERYOVERVOLTAGEINSPECT BATTERY ALARMRED (FAULT) LEDINSPECT BATTERYUNDER VOLTAGEFIRMWARE ERROR-9UNDERVOLTAGECHARGER MISSING ACCHARGER FAIL
Browse all Generac fault codes

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for LOW BATTERY ALARM on your specific Generac unit — cited to the OEM manual, not a forum guess.

TRY IT FREE