Heil air conditioner outdoor unit will not start at all; indoor blower runs and thermostat calls for cooling

Safety first: High voltage is present at the condenser. If you are not comfortable working around 240V circuits, call a professional.

• Step 1 – Check thermostat: Confirm thermostat is set to COOL and temperature is below room temperature.
• Step 2 – Inspect breaker: At the main panel, locate the breaker labeled for the Heil AC and reset if tripped. If it trips again immediately, stop and call a technician.
• Step 3 – Check outdoor disconnect: Ensure the pull-out or breaker at the condenser is fully inserted and ON. Replace any blown fuses with the same type and rating.
• Step 4 – Visual inspection: With power off, remove the service panel and look for burnt wires or loose lugs at the contactor. Tighten if slightly loose; if wires are burnt, have them repaired by a pro.