Generac

UNDER VOLTAGE

UnclassifiedElectrical

What This Code Means

Start sequence is interrupted; Low generator voltage output; Generator controller displays 'Under Voltage'; Generator controller displays 'Warming Up' for an extended period

Possible Causes

  • •Cleaning cycle fails to clear the obstruction
  • •Dust or dirt preventing a good electrical connection
  • •Frost crystals preventing a good electrical connection

Suggested Actions

  1. 1Allow the generator to run its automatic cleaning cycle (an extended warming up period lasting several minutes)
  2. 2Allow the generator to run through the cleaning cycle (extended warm-up period of several minutes)
  3. 3Clear the alarm message and restart the generator
  4. 4Clear the alarm message and restart the generator after several minutes
  5. 5Discontinue start attempts and contact an IASD (Independent Authorized Service Dealer) if the problem persists
  6. 6If the problem persists, make no further attempts to start and contact an IASD

Related Generac Fault Codes

UNDERVOLTAGERED (FAULT) LEDOVERVOLTAGELOW FUEL (20%)LOW FUEL (10%)LOW BATTERY ALARMLOW BATTERYINSPECT BATTERY ALARMINSPECT BATTERYFIRMWARE ERROR-9CHARGER MISSING ACCHARGER FAIL
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