Old or weak compressor The compressor is in your air conditioner’s outdoor unit. Imagine forcing a pillow over your face. I have a 25 amp breaker in my circuit box? 1 - The motor's starter (that capacitor) may be on its way out if the A/C is cutting out on start-up. Air Conditioner Services. A weak compressor has trouble starting. A little funny that there are two, but not know exactly the type of system of you have I can't say why would have two in there. Informations sur votre appareil et sur votre connexion Internet, y compris votre adresse IP, Navigation et recherche lors de l’utilisation des sites Web et applications Verizon Media. Wait a few minutes in between to see if the circuit will remain on. I'll replace it later today, and hopefully that will be that. Thanks, and I apologize if any of these are stupid questions. The breaker to the ac gets warm, almost hot, so we … You sometimes can tell if it's dead if there is a bulge in it. Be sure to turn off the breaker in the garage and then check that the circuit is dead with electrical tester. AC is meant to come on and stay on for at last 10 – 15 minutes, often much longer. If it says 30 Amps then the breaker is the right size. Now, each time I turn it on … Relevance. Reset breaker and unit ran for 3-8 hours before tripping again. Pumps, Filters, and Plumbing D. doubleak ... you could try some hours of forced air drying with a hair dryer blowing into the motor's innards. Sadly both will trip when there is current leaking to ground on most breakers. I hope it's just a bad breaker. If it turns out that the breaker is bad, do I just replace it with an identical breaker, or should I call an HVAC tech to find a root cause. What would be the solution for a thermal overload on the breaker? Sounds like a thermal overload on the breaker to me. 1 decade ago. Help!! Good luck man. As others have suggested, the most likely cause is overloading if the breaker trips after a few hours, but if there is a short circuit in an intermittently used appliance, that could cause the trip too. 1st week Feb 2018:-Found fridge off and breaker tripped. A capacitor is responsible for starting and keeping your air conditioner running. When it does try to start, it may try to pull too much electricity, which will trip your breaker. The breaker resets fine and can run for hours with seemingly no problem. If it goes bad, it can pull too much electricity and trip your breaker. ... started tripping more and more when running my 11A AC unit, as well as a few other plugs in my office. By now you probably know which devices are on this circuit, so check every one with the tester, one by one. That's fine. New comments cannot be posted and votes cannot be cast. Découvrez comment nous utilisons vos informations dans notre Politique relative à la vie privée et notre Politique relative aux cookies. If the breaker is literally burning hot to the touch, a connection may be failing. Viewed 2k times 0. Anonymous. From there it is a case of checking everything on that circuit but it does eliminate the rest of the house. Be sure to turn off the breaker in the garage and then check that the circuit is dead with electrical tester. I replaced the photocell on an exterior lamp, removed the fixture and connected it to an outlet on the same outside circuit and it burned for 4-5 hours with no issue. I know almost nothing about air conditioners. If the filter hasn’t been changed in a … I drive a Coachman motor home and the A / C worked for a few hours. Pump trips breaker after a few seconds. They do vibrate loose with time, on occasion. One of the commonest problems you can encounter is finding that the fridge causes the circuitry in the house to trip. Then I removed 2 of the three Cree low wattage bulbs and the one remaining bulb tripped the circuit breaker … Lights and all stay on when the ac breaker trips. Dirty air filter. This continued for a few days. Common causes include: 1) Dirty air filter: Dirt on the filter impedes air flow. Hard to breathe right? I drive a Coachman motorhome and the A/C worked for a few hours the first time I turned it on. Next time it trips out put all the MCB's to the off position straight away and reset the RCD. I replaced the circuit breaker with a new one, checked the outlets on the circuit to see if any neutral wire is touching ground, and tested the continuity of all outlets on the circuit. Most breakers have a thermal overheat component inside of them that will trip the breaker if it simply gets too hot, regardless of how much current it's running. That's the maximum amps. Our trip switch keeps tripping every 5 or 6 hours (pretty intermittent). I've found two different faults that produce this behavior. 1800 or 2400), that's the maximum watts, and also the maximum VA (volt-amps). If this is the problem, an air conditioning … The breakers in the main panel (garage) were all fine, so no issues there. Comments. Replacement of the breaker, or would that mean that the AC unit is drawing too much power? But even if the AC has its own circuit breaker, the breaker may still trip if the AC is pulling in more amps than normal because it’s working harder. The more it trips the more the breaker wears out. Answer Save. Press J to jump to the feed. Put the MCB's back on one at a time, hopefully one of them should trip the power again. This does happen and the breaker will have a lower threshold to trip. Does it appear to run slow ? That'll identify the circuit that has an issue. 1 undersized. A circuit overload is one of the main reasons why circuit breakers trip constantly. Haven't posted this before. The only thing I would add is checking for bad connections especially if aluminum wiring is involved. A couple questions: are these breakers acting as the fuses for this unit? A capacitor is responsible for starting the compressor, and if the compressor has trouble starting, it could pull too many amps and trip the breaker. If that doesn't fix it, it will be that the condenser is pulling too many amps (probably at start-up) and tripping the breaker. Thread starter doubleak; Start date Aug 15, 2014; Forums. If AC is turning off after 15 minutes or less every single time, or even just minutes after it first kicks on, it’s called “short cycling.” Short cycling is bad for a few reasons: It means you’re wasting energy and driving up energy costs for your home Sometimes capacitors wear out, so they’ll need to be replaced. The 30 A breaker was tripped, so I reset it and the AC unit began working again. Exterior lamp post trips breaker after a few hours. Have a Daikin 3 Phase ducted which trips the main circuit breaker when the unit enters defrost, or so it seems. Breakers rarely go bad. Try the fridge on a non-GFCI protected circuit and see if it trips the breaker. Yahoo fait partie de Verizon Media. extremely informative … I installed a ceiling fan and now my circuit breaker trips about every 3 hours. i would suspect a fridge starting up and tripping the breaker with its inrush current, (3 x the normal current). I'm an electrical contractor but have had no experience on A/C except for wiring up the odd new unit. Vous pouvez modifier vos choix à tout moment dans vos paramètres de vie privée. Being the only thing on the circuit, and it being a 20 amp circuit, tells me that it is not tripping on overload, it is tripping likely on a ground fault. Once the unit is running, the starter doesn't do anything. Pour autoriser Verizon Media et nos partenaires à traiter vos données personnelles, sélectionnez 'J'accepte' ou 'Gérer les paramètres' pour obtenir plus d’informations et pour gérer vos choix. Hi, I have a 1992 Thor Industries Class C RV, the main circuit breaker trips 15 minutes after the roof ac starts, this happens when I am connected to the 30amp AC and also when I am on the generator. Filed Under: Motor Control Tagged With: circuit breaker, EFR, ELR, motor starter, overload, short circuit. If this is the case your breaker that is tripping should be a 15 amp … Turn off the breaker to it at the garage panel and tighten all connection points from there to the AC unit. A clogged, or even heavy duty filtering type filter might be increasing the load on your system. Here are the first steps to take when your AC circuit breaker trips: Turn the air conditioning system OFF at the thermostat (s). I'm sure all the other suggestions are better than this one, but you might check your air filter. 13 Answers. This can be for a few reasons, which will probably need to diagnosed by a Tech in your area. However, there are a few instances where you will still have problems with the new fridge once you install it. This can be for a few reasons, which will probably need to diagnosed by a Tech in your area. The units name plate should show the size of breaker required look for something listed as MCA (minimum circuit ampacity) or MOCP (maximum over current protection), that will tell us if the breaker is the right size. Cathy says 22/10/2014 at 7:26 AM. Have you had this unit for a really long time or just recently? I had a similar problem that ended up being caused by my dryer and hot water heater being incorrectly wired to the same breaker. If the breaker trips at a reading less than 12 amps (assuming a 15 amp circuit), or 16 amps (a 20 amp circuit), then you have a bad breaker. 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). Replacing it should remedy the problem, until the next one wears out. You need to change your AC capacitor. Equipment - Build, Use, and Repair. I've had at least one AC guy suggest that I only use the flimsy cheap filters. Circuit Overloads. A clamp-om ammeter will at least tell you if the circuit breaker is tripping at less that rated load, but you need to be watching the meter when it happens. This causes the AC to run longer to circulate enough cool air to achieve the temperature you want. An example of when you'd have two would be a packaged heat pump unit with a separate circuit for an electrical resistance heater. If that doesn't fix it, it will be that the condenser is pulling too many amps (probably at start-up) and tripping the breaker. No, and we've been in the house for going on five years now with no problems like that. Two probable causes..the first is a faulty breaker but most likely cause is overloaded circuit. While the actual process is kinda complicated to explain, it will eventually overheat the compressor, and it may be shorting the breaker out to save itself. Most lighting circuits in houses are wired with 14 gauge wire rated at 15 amps. You are probably running close to the tripping current of your breaker you mention its at night. Did you post this before? Condenser/compressors rarely run all the time, and cycle on and off when they need to bring the temperature down. So replace it with the correctly sized new breaker. Flip the breaker back on and then turn on the switches and plug in/turn on devices one at a time. AC Circuit Breaker Tripping [ 4 Answers ] My Trane AHU/CU cools great except that twice in the last 2 weeks the circuit breaker has tripped. IMPORTANT: wait 30 minutes with the air conditioner OFF. At your electrical panel, turn the AC circuit breaker switch to the ON position. I think I should inspect the breaker that keeps tripping to make sure that it itself is not the problem, so should I kill power to the entire garage panel, or just the AC breakers before proceeding to remove the outdoor breaker for inspection? The only other thing I can think of is that the machine is running for too long and icing up. -Switched off ice maker during this period in an attempt to eliminate unnecessary load. ... Posted by 20 hours … Again, I appreciate the info. This can be caused by: A dirty air filter; A dirty condenser coil; Broken condenser fan (which helps the outside unit cool the refrigerant) Low refrigerant (if you hear a hissing or bubbling noise near your AC, that means you have a refrigerant leak) However, the concerning thing to me is how "well he " really … Thanks for all the info. 2 - There may be a loose connection in the panel. (The water heater turns on automatically. ... the best way to find the cause of the circuit breaker tripping is by plugging in all the … It appears to run normally after I reset the breaker, and then it just shuts off at some point without any fanfare. I would have the motor checked first. After doing some reading online, I went outside to check the fuses to see if one had burnt out, but what I found outside was another breaker box with two breakers inside. Multiply by 120 (i.e. In this situation your Aircon trip and this aircon tripping problem keeps on going until you reduce the load from that outlet or power circuit. Then I suspect the breaker is weak. Air flow is quite effective at getting things dry and since the motor inside contains thousands of small, water wicking … If you air conditioner is having trouble starting before the circuit breaker trips, it points to a bad capacitor. -Ice dispenser only dispensed crushed ice after re-installation after remodel, but we ignored it. Hi, The problem is that the breaker trips and I cannot reset it, but after a few hours sometimes I can reset it but then it will trip again then when I try to reset it the breaker arc and woun't reset. The good thing about this problem is that once you identify the problem, then you can resolve the problem by yourself in almost no time. You shouldn't need someone to do this for you if you are somewhat handy and read good DIY instructions for it. The breaker that's tripping has a number - either 15 or 20. So now we need to know what’s causing your air conditioner to overheat. Is there anything else running at the times the A/C is running that could possibly be on the same breaker? Low Refrigerant Can Cause an AC Circuit Breaker to Trip. By using our Services or clicking I agree, you agree to our use of cookies. Both times I have noticed it has got hotter in the house, I go out in the … We noticed it when we saw that the digital thermostat had nothing on its display. Yes they are using a breaker based disconnect outside rather than a fused one. GFCI circuit breaker trips after only about an hour. Dirty A/C air filter: Dust can also collect on your A/C’s air filter. Active 2 years, 9 months ago. For the past day, our AC unit has been tripping a breaker and shutting off. Nos partenaires et nous-mêmes stockerons et/ou utiliserons des informations concernant votre appareil, par l’intermédiaire de cookies et de technologies similaires, afin d’afficher des annonces et des contenus personnalisés, de mesurer les audiences et les contenus, d’obtenir des informations sur les audiences et à des fins de développement de produit. That's what a dirty filter … Unfortunately, this is not something that you can do yourself, but the next likely cause would be low refrigerant. But generally when a AC unit trips the breaker its drawing too much amperage. This time I want share basic guideline or troubleshooting method how to troubleshooting when motor overload relay trip.I hope this post can give some ideas or clear view when you face this similar problem during your routine jobs. Question: The breaker to my Central Air system keeps tripping after a few hours of running, and it is almost always as soon as it hits the temperature set on the thermometer. Check it in the same conditions that make the breaker trip. My AC trips my circuit breaker after it runs for about 6-8 hours. About six hours later (middle of the night), the unit had stopped working again, and inspection the next morning showed that the 30 A breaker had tripped again. … Whenever both ran at the same time, the breaker would trip. Favorite Answer. Only found it trips on defrost after running in early morning. If it is the right size first guess would be that breaker has gone bad. I had the air conditioning unit outside checked (no issues) and the Air Handler with thermometer are about 1 year old. Press question mark to learn the rest of the keyboard shortcuts. Not an expert but sounds like the motor on the condenser outside is overheating and causing the breaker to throw. Cookies help us deliver our Services. A place where people can come to learn and share their experiences of doing, building and fixing things on their own. Ask Question Asked 2 years, 9 months ago. I'm not sure what the amperage rating for the top breaker was, but the bottom had 30 on it. If he checked everything out and measured AMP draw off the compressor and it was within normal range. It's cheap, ten bucks, and super easy to change. When your AC starts up it needs that capacitor, but when it goes bad it overloads the breaker and it shuts off or it drags on the motor. So the breaker usually trips after the air conditioner has been running for awhile. Ended up having to install an older style 2 pole breaker.