How Do I Reset My Air Conditioner Safely?

Reset an air conditioner safely by fully powering it down, letting the controls discharge, then restoring power and restarting cooling. Most homeowners do this after a power flicker or nuisance trip to clear a minor control fault. A clean five‑minute power-down lets compressor pressure equalize so it can start smoothly. If your system immediately trips again or won’t start, stop and schedule service to prevent equipment damage. Our technicians handle safe resets and diagnostics throughout Central Indiana, including homes near Boggstown.

• Turn the thermostat to Off (include fan Auto).
• Switch the indoor furnace/air handler power switch Off and flip the AC breaker Off; pull the outdoor disconnect if present.
• Wait 5–10 minutes with everything Off.
• Restore power at the disconnect and breaker, turn the indoor switch On, then set thermostat to Cool and a lower temperature.

If you smell burning, see ice on lines, or the breaker trips again, do not retry the reset and call a licensed technician.

Updated: 2026-09-03

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