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Troubleshoot 10 Common AC Problems

WI Air Conditioning Contractors >> Air Conditioner Troubleshooting

Simple Steps to Diagnose and Fix Air Conditioner ProblemsAir Conditioner Troubleshooting Guide

When your air conditioner is on the fritz, your number one priority is to get it working again as soon as possible. Whether you need the information to perform a simple fix or need a technician sent to your home, the air conditioner repair pros of Southport are here to help.

10 DIY Air Conditioner Troubleshooting Tips

Sometimes, simple troubleshooting can be enough to resolve your air conditioner issues and keep you cool. These do-it-yourself solutions have two key benefits that make them worth investigating. First off, if you perform an easy fix, your air conditioner will be running again sooner than if we make the trip to you — this means less time sweating it out in the summer heat. Secondly, simple troubleshooting can save you money. Naturally, we are happy to help with all issues, but the following checklist is a good place to start when your AC is not doing its job and you are hoping for a fast and cheap fix. If these solutions do not solve your problems, contact the AC repair pros at Southport right away to get your system back up and running.

  1. Check circuit breakers
  2. Check for a dirty air filter
  3. Check thermostat settings
  4. Check all vents
  5. Check your outdoor AC unit
  6. Check for drainage problems
  7. Check refrigerant
  8. Check fan limit switch
  9. Listen to your system
  10. Make sure windows and doors are closed

1. Check Circuit Breakers

If your AC unit will not turn on, it could be because the circuit breaker is tripped. To perform this check, locate your circuit breaker box and look for the switch that controls your air conditioner. If the switch is tripped, turn it back to the ‘ON’ position and try to run your AC again. If the breaker immediately trips again, there is likely a larger electrical problem and you will want to give us a call.

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Air Conditioner Won’t Turn On
Dirty Air Conditioner Filter

2. Check for a Dirty Air Filter

Many problems with AC systems can be caused by a dirty air filter. They include AC units that run but don’t blow cool air, low airflow from vents, water leaking from the unit, and frozen lines. To check your air filter, simply look at it and see if it is dirty or clogged. If it is, clean or replace the filter and see if that fixes the problem.

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3. Check Thermostat Settings

Sometimes, if your AC unit won’t turn on or if warm/hot air is blowing from your vents, the problem could be with the thermostat. It is a good idea to make sure the thermostat is set to ‘Cool’ instead of ‘Heat’ and to check that the settings were not accidentally changed. This also applies to situations when your AC unit will not turn off and is blowing too much cold air—the first step should be checking your thermostat settings. It is possible that your thermostat has a glitch or is improperly calibrated, in which case you want to consult your manual or call in a professional.

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Air Conditioner Won't Stay On
Air Conditioner Won't Blow Cool Air

4. Check All Vents

If your AC is running but your home does not feel cool, water is leaking from your AC unit, or you have frozen lines or coils, it may be the result of closed or blocked vents. To check, walk throughout your home and make sure the vents are open and unobstructed. Sometimes, floor vents can be covered by rugs or furniture, so it is important to look for that as well.

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5. Check Your Outdoor AC Unit

If your AC unit is blowing warm air or is not doing cooling your home the way it used to, your outdoor AC unit could be the culprit. If it is blocked by plants, leaves, dirt, or other debris, the unit is not able to function properly. To fix this issue, simply clear the debris away from the unit and see if it solves your problem.

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Air Conditioner Blows Warm Air
Blocked Air Conditioner Drainage

6. Check for Drainage Problems

When your AC unit removes moisture from the air, it is supposed to go down a drain for disposal. If the drain or lines to the drain are clogged or fully blocked, water can back up and damage the unit. If your inspection reveals the possibility of a plugged drain or water damage, contact a Southport AC repair professional.

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7. Check Refrigerant

Low refrigerant levels could be the reason your AC unit is not cooling properly. Physically checking the refrigerant level is a job for your Southport AC repair technician, but there are signs you can look for that will indicate you have low refrigerant levels. If you see frozen coils or hear a bubbling or hissing noise, low refrigerant is likely the reason. Refrigerant does not get used up throughout the AC process, so the only reasons you would be low are an improper initial charge or a leak. If you suspect either of these things, you should schedule a visit from a Southport AC repair pro.

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Low Air Conditioner Refrigerant
Air Conditioner Won't Turn Off

8. Check Fan Limit Switch

If your AC unit won’t turn off, it could be because the fan limit switch was accidentally turned from ‘Auto’ to ‘Manual.’ Find the switch on or near the blower of your AC unit. Flipping the system back to ‘Auto’ will make it so the fan only runs when directed to do so by thermostat settings and could be the solution to your problem.

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9. Listen to your System

AC units are supposed to make noise, but you should be able to distinguish between normal noises and abnormal noises. If your AC is not working, have a listen and see if anything sounds out of place. It can indicate broken belts, corrosion, broken bearings, or other issues. Hissing or bubbling noises are a sign that there is a refrigerant leak. If you detect a problem by ear, contact a Southport AC repair pro right away.

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Air Conditioner Makes Noises
Air Conditioner Not Cool Enough

10. Make Sure Windows and Doors are Closed

Making sure all of your windows and doors to outside are shut maximizes the efficiency of your AC unit and will enable it to cool your home. If windows and doors are open, cool air may be escaping outside and creating the illusion that your AC is broken.

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Warrantied Air Conditioner Repair

Southport offers warrantied air conditioner repair on virtually any brand of AC unit. We avoid substituting parts whenever possible, and perform all of our repairs according to manufacturer specifications. No matter which brand you trust to keep your home cool, Southport will make sure it does its job. We service and repair units from:

Contact us for 24/7 Air Conditioner Repair in Wisconsin

If you need air conditioner repair services in Southeastern Wisconsin, the AC repair pros at Southport will provide fast and affordable repairs, 24/7. Contact a Southport expert at a location near you:

Air Conditioning
Central Air Conditioning unit service & installation
Furnace & heating systems repair & installation
Indoor Air Quality
Indoor air quality improvement equipment service & installation
Residential Plumbing Serivices in Southeastern Wisconsin