Utility power returns but load remains on generator; controller may show 'Re-transfer Fault' or 'Utility Sense Fault'.

Safety First: Utility and generator sources must be de-energized before opening the ATS. This work is best left to a licensed electrician.

• 1. Confirm utility is present: Use a multimeter at the service entrance or main panel to verify utility voltage is restored and within normal range.
• 2. Check ATS utility sensing fuses: In the GE ATS, locate any fuses feeding the sensing circuits from the utility lines. Replace blown fuses with identical ratings.
• 3. Inspect utility sense wiring: Verify that the utility lines are correctly landed on the ATS line terminals and that sensing leads to the control board are secure.
• 4. Observe ATS behavior: With utility present and generator running, the ATS should receive a signal to re-transfer. If the contactor does not move and no mechanical obstruction is found, the ATS control board may be faulty.
• 5. Manual re-transfer (if equipped): With both sources OFF, use the manual mechanism to return the switch to the utility position. Restore utility, then shut down the generator.