Automatic transfer switch (ATS) does not transfer load to generator during outage; generator runs normally.

Safety first: Only qualified electricians should work inside the ATS. Isolate both utility and generator sources before opening the ATS.

• Verify generator output: Confirm that the generator is producing correct voltage and frequency at the ATS terminals.
• Check control wiring: Inspect the low-voltage control cable between the Hyundai Power generator controller and the ATS. Tighten loose terminals and repair damaged cables.
• Utility sensing: Ensure the ATS correctly senses loss of utility. Measure utility voltage at the sensing terminals; if present when it should not be, wiring may be incorrect.
• Mechanical inspection: With power isolated, manually operate the transfer mechanism (if allowed by the design) to ensure it moves freely. Lubricate pivot points if recommended.
• Replace ATS board: If control signals are correct but the ATS does not operate, the ATS control board may need replacement with a Hyundai Power OEM part.