DIY AC Repair Guide

DIY air conditioning repair should only be attempted by individuals who are knowledgeable about and comfortable working with electrical appliances.

What should you do when the home air conditioning unit suddenly stops working or does not emit any cool air? The practical thing to do immediately is refer to your owner’s manual and check probable causes of the unit’s failure. You can call an experienced technician but it is also possible to opt for DIY repair provided you can handle the problems.

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Suggestions for DIY Repair

The first thing to do after going over your guidebook is to shut off the power supply and the 240-voltage circuit of the air conditioner in the main electrical board. You can also see the connections beside the outdoor compressor. Make sure to remove all the leaves and objects that could be obstructing the external condenser. Likewise, clip bushes or plants that may be preventing air to circulate properly.

Detach the protective cover and grille that shields the compressor. Take care not to disconnect or loosen any wires accidentally. Remove the dirt and foreign particles from the metal fins using a spongy brush. You can use a hose and plunger to spray fragments from the fins. It is important to cover the wirings and motor with a big plastic sheet. You can lubricate the motor but refrain from putting too much grease. You can read this in the manual.

Put all the parts back and reset the thermostat to the off mode. Reset the power as well near the main panel and compressor. Adjust the thermostat to turn on the air conditioning unit. Wait for five minutes before turning it on to avoid undue strain on your unit. Allow the appliance to operate for several minutes. Touch the pipes connected to the condenser and the air handler. One of the pipes should be cool while the other is warm. Call a technician if the unit fails to work since there may be a need to recharge refrigerant.

Other Repair Concerns

Once your window AC does not turn on automatically, make sure that the thermostat has been set to cool and fix the temperature setting below the prevailing climate. Inspect the main power panel for any busted fuse or tripped breaker. The switch for furnace power must be turned on while the power switch of the external condenser should not be shut own. Shut off the power leading to the unit and inspect the thermostat. It may be defective if the compressor continues to jerk. Summon a technician to work on this concern.

If the air handler emits a squeaking noise, the blower may be faulty. Turn off the unit and call an HVAC units technician. The motor bearings may be malfunctioning. Pump cycling may not be sufficient when the room temperature moves back and forth more than 3 degrees Fahrenheit and the unit goes on and off. The thermostat may have been installed or calibrated incorrectly especially if the temperature decreases further. You can make the adjustments or call for a more experienced person to do this for you. Once the heating and cooling metal ducts become too noisy, put in flexible insulation between both systems to resolve the issue.