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AC Not Cooling? Quick Checks for Daytona Beach Homes

These checks are quick and safe, and they either fix the problem or give your contractor a head start.

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Thermostat

Cool mode, a setting below the room, fan on Auto and fresh batteries.

Breakers and disconnect

Check both breakers and the outdoor disconnect. Reset once.

Diagram: the outdoor disconnect box sits beside the condenser.
Diagram: the outdoor disconnect box sits beside the condenser.

Filter

Replace a dirty filter and give the coil time to recover.

Diagram: the filter slides into the air handler or behind a return grille.
Diagram: the filter slides into the air handler or behind a return grille.

Ice

Run the fan only to thaw iced lines before trying cooling again.

Drain pan

A full pan may have tripped the float switch.

Diagram: water drains from the coil pan; a float switch stops the AC if it fills.
Diagram: water drains from the coil pan; a float switch stops the AC if it fills.

Outdoor unit

The fan should spin when cooling. Humming without spinning needs a technician.

After a storm

If it stopped during lightning, check breakers once, then book a repair.

Condo owners

Check building rules before anyone accesses rooftop equipment.

Notes

Write down what you checked and when the problem started.

Next

See AC repair.

Hot afternoons

An older system may run all afternoon and still sit a few degrees above the setting on the hottest days. If it catches up by evening, it may just be at its limit.

Stay off the roof

Rooftop and balcony equipment can be dangerous to reach. Leave it to the contractor.

Rooms that stay warm

If only a few rooms are warm, the cause may be ducts or closed vents rather than the AC itself. Note which rooms.

Lightning season

From June through September, afternoon storms are the most common reason a working AC suddenly stops. A tripped breaker or a damaged board is often the cause.

More air conditioning guides

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