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System isn’t working? No matter what the problem, we’re here to help. Before you call for service, try these simple tips for troubleshooting air conditioners.
Check These First
Is it getting power?
Check your fuses or circuit breakers to make sure they don't need to be present
Remember, if your home's power is out or disconnected, your system may not work
Is the thermostat set correctly?
Make sure your thermostat has power
Check that your thermostat is set to cooling or heating mode and not set to "off"
Make sure the thermostat is set to the right setting and temperature
HEAT
No Heat / Insufficient Heat
Do you have a new or newly remodeled home? Was any work done on your fuel or electricity lines recently? Check to see if your gas or electricity has been turned off. If this is the case, having it turned back on may solve the problem.
Check to see if your thermostat is on, and what temperature it's set at. If your thermostat is turned off or set incorrectly, turn on and/or reset thermostat.
Check your home's circuits and fuse box. If you have an open circuit breaker or burned-out fuse, switch on the circuit or replace the fuse.
Remove any snow drifts resting against your outdoor unit.
COOLING
No cooling / Insufficient cooling
Check the doors and windows in your home. Close any open doors or windows as cool air may be escaping through them.
Check to see if your thermostat is on, and what temperature it's set at. If your thermostat is turned off or set incorrectly, turn it on and/or reset thermostat.
Check your home's circuits and fuse box. If you have an open circuit breaker or burned-out fuse, switch on the circuit or replace the fuse.
No airflow
Check around your outdoor unit. If there are any leaves, hedges or property walls butting up against it, your system may have frozen up due to a dirty coil. Make sure your outdoor unit has 1' of clearance all around it.
Check the filters in each of your system components (where applicable). If any of your filters are dirty, consult your manual to clean or replace it. Or call your dealer to do this for you.
Check to see if there is any air coming through your vent. Your indoor blower may not be operating. If this is the case, you should contact your dealer.
AIR FLOW
Noisy air vents
A high pitched sound often, although not always, indicates a lack of return air. Make sure your return and supply vents are open and free of any blockages including furniture.
Other noises (e.g., rattling, humming, thumping or scraping sounds) could be a sign of undersized or flimsy duct work, clogged filter or wear and tear on your system’s internal components. If you hear an unusual sound, call your local dealer for service.
