Clicking or buzzing noise from the control area when the compressor should start, but compressor does not run.

Safety first: Unplug the unit and discharge the capacitor before handling.

Steps:

• 1. Verify voltage: Ensure the outlet provides stable voltage within the specified range. Avoid using long extension cords.
• 2. Inspect capacitor: Access the electrical compartment and check the capacitor for bulging or leaks. Replace with the correct Insignia-rated capacitor if suspect.
• 3. Check compressor wiring: Confirm all connections at the compressor terminals are tight and not burned.
• 4. Board inspection: If the relay is chattering (rapid clicking), the main PCB may be failing. Replace the control board if visual damage is present or if a new capacitor does not resolve the issue.
• 5. Professional help: Persistent buzzing with no compressor start may indicate a locked compressor, requiring professional evaluation.