Air Conditioner Won’t Switch off
If your Air Conditioner doesn’t turn off when the room temperature reaches the temperature level set on the thermostat, the issue is usually happening either at the thermostat or in the electrical system that runs the outdoors condensing system. You can utilize the Air Conditioning’s circuit breaker to shut off the unit, but that ought to not be an irreversible solution– the switch is not created to be used as light switches.

If the thermostat is blank– not showing any signs of movement– or if the Air Conditioning turns off if you turn the thermostat to HEAT, the thermostat is most likely broken and has to be changed.

If the thermostat works great with the furnace, the issue probably isn’t the thermostat unless one of the wires has disconnected or arced. When the Air Conditioning is running, attempt removing the yellow low-voltage wire from the thermostat. Then:

If the unit switches off, either the thermostat is broken, or it is wired poorly. Make sure it is wired correctly– without any cross-connected cables. If the electrical wiring appears to be all right, purchase a brand-new thermostat and install it inning accordance with the guidelines.

If the Air Conditioner does not shut off, it’s likely that the contacts on the outside run relay have welded together– something that can occur over time because of regular electrical arcing at the relay. Before checking the track relay, turn off the power to the furnace and the condensing unit. Take apart the relay and pry apart the contacts. This must work up until you purchase a replacement– which you should do quickly.

Ductwork pinging or popping
Do you hear a pinging or popping sound coming from metal ductwork? This might be due to the air blowing past a loose flap of metal or by thermal expansion. Track along where the duct runs, listening for the sound. If you discover it, make a small dent in the sheet metal to provide a more solid surface that’s less likely to move as it heats and cools.

Heating system or air handler rattling ductwork. If the heater makes rattling noises when it runs, be sure the cover panels are screwed on tight. If they aren’t, tighten them.

Ways to Evaluate the Air Conditioner Compressor’s Capacitor
Before initiating the electrical cover on the Air Conditioner system, make sure to shut off all power to the network and verify that it is off. Next, remove the lid and, using a digital multimeter set to “Capacitance,” put one lead on the “Typical” terminal and the other lead on among the other two terminals. The meter must reveal a number– not “OL” which suggests a brief. The Capacitors can be like two capacitors in one, with both sharing the common leg.

Still having no Clue on what to do or having a really hard time figuring how to repair a simple or complicated Air Conditioning System? Its time to call hvacsystempros.com