How To Repair Room Air Conditioners 1. Check cord, plug, and outlet.    Check for blown fuse or tripped    circuit breaker at main entrance    panel; 2. Motor overload    or safety shutoff. 2. Wait 30 minutes; 3. Check terminals and insulation; if    burns are evident, replace switch. If    switch looks all right, call a professional. 1. Put on different circuit. 2. Call a professional or the    power company. 1. Thermostat set    too high. 1. Lower thermostat setting 5°. 2. Clean or replace filter. 4. Condenser blocked    from outside. 4. Make sure outside of unit    is not blocked. 5. Call a professional. 6. Call a professional. 7. Call a professional. Fan runs, butunit doesn't coolif faulty,    replace, or call a professional. 4. Call a professional. Unit cools, butfan doesn't run 1. Control switch    set wrong. 2. Clean and tighten fan blades. 3. Fan blades bent.

3. Straighten fan blades. 4. Fan motor faulty. 4. Replace fan motor or    call a professional. Unit turns onand off repeatedly 2. Clean or replace filter. As you can see, there are many parts that can fall into disrepair on an air conditioner. You can learn how to fix many of these, such as the filter and coils, on the next page. How To Repair Central Air Conditioners: If your system sends cool air to all parts of the house, you've got central air. Keep the system running cool. Major Appliance Repair: If the a/c isn't the only thing in your house on the fritz, you can learn how to fix other machines in this article. Small Appliance Repair: Once you've tackled the a/c, a toaster or blender seems like child's play. Find out how to fix them here. Thermostat Maintenance: To make sure there's actually a problem with your a/c, you may want to check the thermostat, too. Learn how to calibrate a thermostat. Should you turn your heat down when you're not home?

Top 7 Ways to Improve the Energy Efficiency of Your Garage How to Test Air Quality in The Home How to Drain a Radiator How to Test a Thermocouple on a Gas ValveIs the thermostat the problem? When we have our central air fan set to "on," it runs fine, but when we set it to "auto," the fan does not come on even though the AC compressor kicks in.  Antique Mirror Glass Tiles Uk(The AC unit is working fine...Blinds Pressure MountedIt comes on and produces cool air). Tall Ship Duvet CoverThis means that we have to keep the fan on constantly when we want the AC on.  Do we need to replace the thermostat? It didn't seem to have this problem throughout the winter when we had the heat on and the fan set to "auto." Ultimately, you may have to replace the thermostat.

But before you do, try these steps: 1) Thermostat switches make electrical contact across two very small conductors that carry a very low energy signal. This means a low-energy battery, without enough energy to create the required signal, can result in problems like you're experiencing. First step ... purchase a fresh battery and replace the old one. Move the temperature and fan switches to the "Off" position and then return to your preferred settings. Allow several minutes for the thermostat to "cycle." Then determine if the compressor and fan have come on; 2) Because the thermostat conductors are very small, if the switches are slightly out of position and they will not conduct the required energy to transmit a signal to the fan and compressor. Try simply wiggling the switch back and forth gently across the "Auto" position and allow it to stop as you feel it click into the "Auto" position. Allow several minutes for the thermostat to "cycle" and determine if the compressor and fan have come on.

These are two easy steps that may allow your system to work. Since you report the thermostat working fine in the "Heat" position, I would expect it to work just as well in the "Cool" position. I hope one of these simple fixes works! However, if these steps do not work, thermostats are relatively inexpensive and the included instructions make it fairly easy to install. Make certain you purchase a thermostat for the type system you have (ex. heat pumps often take a different thermostat that compressor systems). Then, pay attention as you remove the old thermostat and reinstall the new thermostat following the color codes on the instructions. Finally, if none of these steps work, have a reputable licensed AC contractor service the unit. Most units that are serviced regularly provide efficient service for many years. I have taken these steps many times in the transition between heating and cooling seasons, and I'm always pleased that I didn't turn a small repair into an unnecessary, much larger repair bill.

NOTE: This is a great time to change your air filter. Check the size and purchase a replacement while you're at The Home Depot. A Plumbing Associate will be happy to discuss your options. Relays/capacitors are commonly damaged by power surge ... lightning is a common enemy of this part! The visible indicator is the canister swells like it wants to burst. Relays are beyond most DIYer's desire or ability, so I didn't include it in my earlier list. If you were able to identify the item, a local A/C supply house would likely stock the part and may or may not sell it to you ... some require licensure to sell any of their parts while others will sell non-regulated supplies to anyone. Unless you are particularly handy with electrical, I would save my resources for that reputable, licensed repair shop. You may find the solution another way, but having your annual service and including this repair is likely a good idea. I really like to "Fix It" when I can, but there are times when you just have to let go and call a pro!