Generator runs its weekly exercise cycle but does not pick up any load during the test.

Safety first: Do not attempt to force the ATS to transfer during exercise without understanding system design.

• Review controller settings: Access the Yamaha controller menu and check the exercise mode configuration. Many systems default to no-load exercise.
• Check ATS programming: Some ATS units are designed not to transfer during exercise. Consult the ATS manual to confirm behavior.
• Perform manual load test: To verify load transfer, initiate a manual test that simulates a utility failure per Yamaha and ATS instructions.