1 SECOND FLASH (1 ON – 1 OFF)

UnclassifiedGeneral

What This Code Means

Module sheds its load; LED flashes at one second intervals

Possible Causes

  • Generator overload detected
  • Initial five minutes of operation during first-time utility power up

Suggested Actions

  1. 1Wait five minutes plus the predefined priority set time for the module to recover and contactor to close
  2. 2Set the priority of each SMM module (with high priority 240 VAC loads set to the highest priorities) so loads recover in the correct order and prevent generator overload
  3. 3Set the lockout switch to ENABLED for non-essential, non-critical loads that should not run on generator power

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for 1 SECOND FLASH (1 ON – 1 OFF) on your specific Generac unit — cited to the OEM manual, not a forum guess.

TRY IT FREE