Is your AC cooling or heating at all right now?
Is it dripping water anywhere it shouldn't?
Is it blowing any air at all, even if it's not cool or warm?
Is the thermostat screen turned on?
Set the thermostat to Fan-ON. Does air start blowing?
Check for a flow switch near the air handler (a small safety float switch). Is there water sitting in it?
Is the outside condenser unit turned on and making any noise?
Is the outside unit's fan turning on?
Check your breaker panel, HVAC units often use a double breaker. Any tripped? Try resetting.Revisa tu panel de breakers; las unidades de aire acondicionado suelen usar un breaker doble. ¿Algún breaker se disparó? Intenta reiniciarlo.
Does the outside unit blow air that feels hotter than the outside air, upward from the top?
Check under the air handler or behind the filter. Any visible ice?
Is your AC unit frozen? Take out the filter and look under the air handler or behind the filter for ice.
Put your thermostat on Fan-AUTO and Cool-OFF. After 10 minutes, is the air handler making a bubbling or cascade noise?
Time to schedule a visit
Find the breaker for your condenser unit (the outside unit) in the breaker panel and switch it off. Then schedule a visit so a technician can take a look.
Time to schedule a visit
Water leaks aren’t a do-it-yourself check. Let’s get a technician out to take a proper look.
Time to schedule a visit
This one needs a technician on-site to diagnose properly. Let’s get you scheduled.
Time to schedule a visit
This looks like it could be a refrigerant issue. We’ll schedule a visit, just make sure the system stays fully powered off for about 6 hours before the technician arrives.
Try this
Try replacing the thermostat batteries. If it’s hardwired with no batteries, that’s a sign it’s time to schedule a visit.
Try this
Clear the water out of the flow switch. If the issue keeps happening, schedule a visit.
Try this
That was likely it. Keep an eye on the system over the next day, and reach out if it trips again.
Try this
Turn the system off for 6 to 8 hours and replace the filter. If it stays frozen or freezes again, schedule a visit.