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Capacitor replacement is it common for the breaker to trip after installing a new capacitor in the outside unit????

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Posted on Jul 15, 2009


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1 Answer

Why does air conditioner trip circuit breaker?

call the technician
indicates a compressor problem
could be a failed start/run capacitor or compress failure

Nov 19, 2017 | Heating & Cooling

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AC unit will not turn on and will not cool down

The first thing you want to check is all your breakers and disconnects. You should have 2 breakers in your breaker panel, one that runs unit inside and one that runs unit outside. Turn both off and then back on to make sure they are not tripped. Next go to your unit inside and you want to look for a breaker on the unit and/or a disconnect somwwhere in the immediate area. If it is a breaker, reset that, If it is a disconnect, you have a lever on it or, it may have a pull out piece your going to want to pull out and inspect to make sure it doesn't look burnt. It should say "on" on it and maybe an arrow but when properly installed, you should be able to read "on" right side up not upside down. Next, you want to go to the unit outside. It should have a disconnect of the same fashion, so check it also. At this point make sure your thermostat in in the "on" or "auto", auto would be the right setting but, does the unit run? If so, is the unit outside running as well. If only the inside unit runs, you either have a bad thermostat or a bad capacitor or wire in the unit outside, it could be other things with the unit outside but, these are common items. If everything runs, and it is still not cool, again, the thermostat could be bad or it may be time for a charge. Make sure you filter is clean as well because limited air flow acn cause the unit to freeze up and not work.

Jun 05, 2011 | White Rodgers Water Heaters

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I have a Carrier AC unit with a heat pump. I noticed that it wasn't cooling and the circuit breaker had tripped. When I reset the breaker and try to start it again, it trips againafter 10 seconds. The...

Check with your contractor to see if their repair is warrantied. If it is not call someone who carries a warranty and satisfaction guarantee on repairs. It is likely that you got a bad capacitor, however, this typically will not trip a breaker. It's possible that other issue(s) caused the capacitor failure.
How old is this unit?

Aug 26, 2010 | Carrier 38CKC060 Air Conditioner

1 Answer

Unit "clicks" when turned on, but will not start up.

The click you hear is the contactor getting pulled in whe there is a call for cooling. There are a couple of things you can check before calling someone.
1. Make sure you are getting 220v power to the unit. (breaker tripped, fuses in disconnect box outside).
If you have a volt meter, you can just check the power at the box before and after the fuses, if any at all.
2. If you are getting power, you can check the capacitor. The capacitor is a round or oval object with 2 or more wires going to it in the units electrical compartment. A visual check can be done by seeing if the top of the capacitor is bubbled up at all, but sometimes there are no visual indications and will have to be checked with a multi-meter that reads micro-farads (mfds). Capacitors are a common cause of a unit not powering on and pretty cheap to fix yourself, you can pick them up at a local A/C supply store.
If you have a tripped breaker or a blown fuse and the breaker trips again right after or a fuse blows again, you might have a shorted compressor and will have to be looked at by a technician. Hope this points you in the right direction!

Aug 17, 2010 | Goodman CKL36AR36 Air Conditioner

1 Answer

Neither A/C compressor or fan coming on in ouside unit.

The bulge is a telltale sign of a defective capacitor along with the tripped breaker. Replace it and cross your fingers.

Jun 21, 2010 | Carrier 38CKC036 Air Conditioner

2 Answers

Inside the air is blowing, but the outside unit fan isn't moving at all. HOUSE IT HOT!!!

Two things; outside does the compressor try to come on? If not you may have a switch\Thermotat problem. Also make sure the breaker to the outside unit hasn't tripped. If it has tripped there may still be a problem after you turn the breaker back on. If it's only the fan that's not coming on outside you will need a new capacitor or fan motor and compressor(if the fan motor is replaced you should have a new capacitor also. If it has been intensely hot your unit might have just gotten overworked. Then resetting the breaker is all that is needed. If you have continuos resettings you MUST call a qualified HVAC Tech.

Jul 12, 2009 | Goodman CLQ36AR49 Air Conditioner

2 Answers

Outside unit tripped the breaker. flip the breaker

Check the fan relay or contacts first. If the compressor comes on then your fan may be locked and will need replacing.

Jul 06, 2009 | Dometic Rooftop RV Air Conditioner

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Bryant air condition fan outside not coming on

Check breaker for outside unit Also check to see if you ahve afloat switch on the inside air handler. Located under or in front of unit. It may be full of water and tripped. Blow out drain if tripped.

Jun 15, 2009 | Ruud UBHC Air Conditioner

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Only fans work on split system model ls-k2463hl earth breaker trips when compresor tries to start I own a Panasonic Heat pump model A18CKP6G with the same problem. The compressor was replaced last June...

Sounds like a wiring problem between the outdoor unit and the house. You would be surprised what I have come across in 30+ years of A/C work.
But it could also be the compressor.

I will need to know answers to the following -

Does the compressor have a soft start (2 wire capacitor looking device that attaches to the run capacitor), hard start (relay and capacitor), or just the run capacitor?

Were the run capacitors and start components replaced when the compressor was replaced?

Is the breaker a GFI breaker, or just a standard breaker?

Rain or humidity is not usually a factor, but it may be something.

Reply back what you find.

Feb 01, 2009 | Heating & Cooling

2 Answers

Breaker keeps tripping

If the breaker itself is more than 15 years old, replace it. If it continues to switch off, check the amp draw of both the inside and outside unit.

Sep 11, 2007 | Heating & Cooling

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