Possible reasons why your air conditioner is tripping the circuit breaker From best-case to worst-case scenario, the most probable causes of your AC circuit breaker tripping include: Power surge in the area (probably due to a thunderstorm) I have a 100 amp box that serves my upstairs loft, with another 100 box serving the rest of my house (or at least that's what it looks like). It's 7 years old. I've got it going tonight so we'll see how she does overnight. 4. Unit operated fine with no problems up until yesterday when it began tripping the circuit breaker. I have a multimeter, so if you need me to check anything I can do it. Grain of salt,: Not an electrician, but I do some DIY around the house. Location: central california. So now we need to know what’s causing your air conditioner to overheat. It has been working perfectly until last night. Most window AC units are designed to operate on a standard 120-volt, 15-amp circuit. This will cause the circuit breaker to trip too. One of the simplest causes is that the circuit breaker or fuse is … It doesn't seem to trip the breaker when running the fan only, but after the compressor kicks on, it will trip after maybe 20 minutes to an hour (sometimes even less). If it's super dirty call in a professional. That did seem to help as the unit ran throughout the night with the fan on setting 2 of 3, and the temp at 71. I also don't know how it was handled before I moved in. At first it did seem to perform better during the night when the temperatures dropped into the upper 70s. Some spots I couldn't reach but I bet I got 75% of it clean. No excuses. I had this happen on a 15A breaker that was heavily utilized, started tripping more and more when running my 11A AC unit, as well as a few other plugs in my office. A breaker trips when there is too much power consumption or current at any given time. This page is about when an AC unit trips the breaker. Specific AC problems that can trip your breaker. Air conditioning units are a common cause of a breaker tripping. I checked the specs after reading most of yall's posts and there are as follows: Watts-1110 Amps-10 Volts 103.5 minimum 126.5 maximum It works for about 20 minutes and trips. However when using the heater the demand for more electric power trips the circuit breaker and shuts off. George Brazil has been keeping Phoenix-area homes safe, comfortable and energy efficient since 1955. Either bad breaker or AC is using more juice than breaker can handle. This causes the AC to run longer to circulate enough cool air to achieve the temperature you want. That is, if you have a 20-amp breaker and the AC pulls 30 amps, the breaker trips. I have an electrician coming over tonight to make sure the breaker box or fuse(s) are not damaged or mis-wired If it's not electrical, I may call in an HVAC person or simply look for a new unit. Trouble shooting this problem is more complicated as it involves not just a particular component but the electrical circuits. IMPORTANT: wait 30 minutes with the air conditioner OFF. Just HANDLE IT. George Brazil Air Conditioning and Heating provides the Phoenix area with. The upstairs loft is 680 square feet with vaulted ceilings. When I went to check on it, I noticed that the outside unit wasn't coming on. If you air conditioner is having trouble starting before the circuit breaker trips, it points to a bad capacitor. Hey guys - I have a 12,900 BTU window AC unit for my large bedroom loft. I unplugged the AC/Heater and left it unplugged for a while. This summer while using a 120 volt cord & plug window A.C unit install in his bedroom, he complain to me that the AFCI circuit breaker was tripping alot. Air conditioners typically run until they reach a temperature set-point, and then they turn off and let the temperature rise again. Why does this window AC unit keep tripping the house breaker ? New comments cannot be posted and votes cannot be cast, All things related to HVAC - Heating, Ventilation, & Air Conditioning, Looks like you're using new Reddit on an old browser. The unit is 120V and is the only thing plugged into the circuit (We have unplugged every other single item). This often happens to air conditioners that are near their end-of-life, i.e. I actually did use some water based foaming cleaner earlier this week on the evaporator coils and condenser coils. A simple test can be performed to see if other devices are powered on the same circuit breaker as your outlet. What brand breaker? Basically since Friday we've had a heat wave come through town hitting mid to upper 90's each day. If it keeps tripping, something needs to be fixed. When an air conditioner overheats, it draws more amps (a measurement of electrical current) from the circuit. The excess resistance produces excess heat. Unit is 240. Eventually I upgraded the wiring to a 12/2 and a 20A breaker, and isolated/dedicated to the unit as the long term repair. A simple test can be performed to see if other devices are powered on the same circuit breaker as your outlet. You might have either a bad plug-in or a bad breaker. 2) Dirty condenser coils: The condenser coils are in your air conditioner’s outside unit. Here are some reasons your AC will cause circuit breaker tripping: The breaker could be … No excuses. However, I only got the outside of the condenser coils. You can use just water for this or some very mild cleaner. that have a slow leak. In this case, you will need to isolate the cause of the fault or repair the equipment before power supply can be restored to the entire house. Unit is about 5-6 years old. A this tripping was associated with the A.C. compressor coming on. The site may not work properly if you don't, If you do not update your browser, we suggest you visit, Press J to jump to the feed. Never ignore an air conditioner that’s tripping the breaker. If your air conditioning unit is tripping your circuit breaker, the first thing to remember... View Article We had had problems with ants in the contacter in the past, and so I went to take off the lid and check it out. Make sure you use the input BTU and not the output BTU, if both are listed. Yes, there is a way to reset the compressor on a window mounted air conditioner. ... Any time I go on a call and compressor is over amping this is the first thing you check on any air conditioner no matter how big or small. But if the condenser coils are covered in dust, dirt and leaves, then the coils can’t properly dissipate the heat. AC worked for 5-6 years on this breaker/outlet. So the air conditioner has to work harder and longer to cool your home and overheats as a result. 4) Condenser coil fan malfunction: This is the fan in the outside unit. Simply resetting the A/C circuit breaker, therefore, is treating the symptom instead of the cause. All of a sudden the air conditioner cut off and the clock (which is plugged into the other outlet) went off as well. If it is the plug-in it will be the cheapest and easiest to fix. Try changing the filter to see if it stops tripping the breaker. So DON'T keep resetting the breaker and letting it trip. A circuit breaker usually trips because of excessive current draw from a component on the circuit. If you're positive there isn't anything else utilizing the breaker, then its likely a breaker is just worn out. If your breaker trips whenever you turn on the AC, don’t keep resetting the circuit. I'll try and clean that again this weekend from the inside. Nothing else is connected to that fuse. Another thing to check might be that your unit is its drawing its specified power. At your electrical panel, turn the AC circuit breaker switch to the ON position. It doesn't seem to trip the breaker when running the fan only, but after the compressor kicks on, it will trip after maybe 20 minutes to an hour (sometimes even less). It has been working perfectly until last night. Air Conditioning and Cooling Systems - Cord GFI (?) level 2. The reason for this is that the extra pressure put on your system to push the air through the dirty filter will put way too much pressure on your electrical system. Press question mark to learn the rest of the keyboard shortcuts. Even if i press test (unplugged/tripped breaker of course) it remains un-affected. tripping on window AC - Yesterday I bought the last large window unit of the 4 stores I visited. 1. Summing It All Up. DO NOT HOLD THE TEST BUTTON IN. Electrical breakers are a safety device designed to keep your home and appliances safe in the event of electrical overloads. Sometimes capacitors wear out, so they’ll need to be replaced. However, I will say that the unit has tripped a handful of times over each summer, but nothing as bad as it's been the past few days. The wire from the AC to the panel heats up enough that it trips. YES. 2. Can an electrician diagnose what is causing the problem and make it to where stuff just runs without making that stupid "tink" sound of the breakers tripping? By using our Services or clicking I agree, you agree to our use of cookies. It also helps to unplug the air conditioner to clear the air conditioner's settings. You’ll know if you don’t have enough refrigerant if the air your air conditioner puts out isn’t very cold. Step 1 Check your air conditioner's wattage in its specification sheet. Replacing it should remedy the problem, until the next one wears out. Thanks for your comment. that have a slow leak. This is dangerous and just ignoring the problem. Air Conditioner Circuit Breaker Keeps Tripping – Reset Your Air Conditioner’s Circuit Breaker (ONCE, and ONLY once!). Not used for a month. When an air conditioner overheats, it draws more power from the circuit. Be sure that the thermostat remains OFF so that your air conditioner’s internal circuit breaker can reset. My General Electric Air Conditioner AJES12DCBM1 trips the cord breaker. In Kansas we rely heavily on our air conditioners in the due to the state’s hot, humid spring and summer seasons. 1 Poor maintenance can cause air conditioner breaker trips. Turn it on 20 minutes later and it works for 10 minutes and trips. I made a service call, and this AFCI Breaker, installed in the year 2004 with blue marking doesn't trip for me. Like layers of dust dirty. The circuit breaker’s job is to turn off when there is too much electrical current. Could be a fault with the air conditioner, or the circuit breaker isn't designed to work with it. Air Conditioner Not Cooling. Have a contractor repair the fan. Window air conditioner tripping breaker. 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