Generator starts but shuts down when large loads like air conditioners attempt to start.

Safety first: Ensure utility power is restored before modifying load connections. Only qualified electricians should change circuit assignments.

• Stagger load start: Configure thermostats and large appliances so they do not all start simultaneously when on generator power.
• Use load shedding (if available): Enable or adjust load shedding modules in the ATS to prioritize critical circuits.
• Engine tune‑up: Perform basic maintenance (spark plugs, air filter, oil) to ensure the engine can handle rated load.
• Professional assessment: If shutdowns persist, an electrician should verify that the generator kW rating matches the home's starting loads.