If your AC unit is not working, check to see if every thing is stopped. When an AC system is running, you have three major parts operating. Examine to see if air is flowing though the vents. If you have vents in the ceiling you might have to stand on a step ladder or step stool. Be really careful about using chairs.
Examine the outside air condenser fan and see if it is running. You also should check to see if the compressor is running. It will make a loud humming noise and you might feel a small vibration on the unit. If none of these parts are running you might not have any power going to the AC unit.
If you suspect there is no power to the unit, check the circuit breaker panel. There should be a breaker or breakers marked “AC”. In fact, take notice if any of the breakers are out of place. If you have a tripped breaker, you should turn it to the “off” position. Next, turn it to “on” and it should reset. If the breaker continues to trip, then you have something else wrong with the unit and you should get in touch with an AC repairman.
If the breaker is not tripped, check the outside disconnect. For safety reasons, a disconnect switch should be installed next to the AC unit outdoors. This disconnect keeps the AC specialist safe from electrical shock as he can easily kill the power at the unit. If the disconnect is fine, then have a look at the indoor thermostat.
Make sure that no one has shut off the thermostat or altered the settings. If you have a digital thermostat, make sure that it is working correctly. In time, the batteries will run down and you might have to change them. This might repair your issue. If you have actually checked the breaker, disconnect, and thermostat, it might be a really good time to call for service.
Sometimes, air conditioning units will not cool correctly and it might be due to grimy condenser coils. Go outside and see if the outside coils are covered in dust, dirt, and debris. Clean them with a garden hose, and if necessary, a mild soap and a soft brush. Be careful not to damage the coils when you clean them. You should make sure that the heater or home filter is clean. These things can easily cause your AC unit to not cool correctly Site .
There are things you can easily do to repair your air conditioning unit if it is not working correctly. However, one needs to be really careful about matters with high voltage. The greatest way to recognize how to repair air conditioning units is to locate the right professionals to call for service.