Generac

F3

UnclassifiedLubrication

What This Code Means

VAC was NOT measured at Wire N1A; 240 VAC was NOT measured between the N2 lug and terminal 1 of the TR1; F3 fuse blows; SMM Load Shed Module not operating when line voltage is present; Little or no battery voltage present at Terminal Connection 87 (Wire 15) on RL1 socket; Little or no battery voltage present at Terminal Connection 86 (Wire 15A) on RL1 socket; Little or no battery voltage present at Terminal Connection 87 (Wire 15) of the Engine Run Relay (RL2).; No T1 Voltage at Control Panel Connector; Less than 120 VAC or 0 VAC at customer connections (T1 to NEU); Less than 120 VAC or 0 VAC in the transfer switch (T1 fuse holder bottom to NEUTRAL); Less than 120 VAC or 0 VAC at the top side of the T1 fuse holder to NEUTRAL; Blown T1 fuse; "inspect battery" warning is raised; Battery open-circuit voltage is less than approximately 12.5V; Low voltage from engine stator coil (less than 26 VAC); Low voltage from voltage regulator/rectifier (less than 13.0 VDC); Low voltage from voltage r

Possible Causes

  • •Faulty or damaged Wire N1A
  • •Faulty transfer relay
  • •T1 wiring shorted to ground
  • •Faulty controller
  • •Improper contactor operation
  • •Wire 15 is pinched or cut
  • •Wire 15 is prevented from having proper battery voltage
  • •Wire 15A is pinched or cut
  • •Wire 15A is prevented from having proper battery voltage
  • •Wire 15 is pinched, cut, or in a condition that prevents voltage from being present.
  • •Faulty wire between customer connection block and appropriate connector
  • •Blown T1 fuse
  • •Open wire
  • •Battery charge current at the end of the charge time is greater than a pre-set level
  • •Compromised wire/terminal on engine stator coil
  • •Faulty engine stator coil
  • •Blown 10A Fuse (F3)
  • •Faulty voltage regulator/rectifier
  • •Faulty diode
  • •Faulty harness

Suggested Actions

  1. 1Repair or replace Wire N1A
  2. 2Replace transfer relay
  3. 3Replace the controller (if DMM indicates infinity during T1 wiring test)
  4. 4Repair or replace the wiring in the appropriate circuit (if DMM indicates continuity during T1 wiring test)
  5. 5Verify that Wire 15 is not pinched or cut or in any other way prevented from having proper battery voltage.
  6. 6Verify that Wire 15A is not pinched or cut or in any other way prevented from having proper battery voltage.
  7. 7Verify that Wire 15 is not pinched, cut, or in any other condition that would not allow voltage to be present on Wire 15.
  8. 8Repair or replace wire between customer connection block and appropriate connector
  9. 9Refer to flow chart (Bad)
  10. 10Repair or replace wire T1 between the generator and the transfer switch
  11. 11Verify that load voltage is available to the load side of the contactor
  12. 12Replace blown fuse as needed
  13. 13Proceed to Problem 10 'Blown T1 Fuse'
  14. 14Repair wire/terminal if compromised
  15. 15Replace engine stator coil
  16. 16Replace the 10A Fuse (F3)
  17. 17Replace the voltage regulator/rectifier
  18. 18Replace diode/harness
  19. 19Controller in AUTO
  20. 20Enable internal 5A charger

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