Visually, if the capacitor is swollen then you need a new one. The “Herm” connection wire would go to the start terminal on the compressor and the C (com) wire would go to a power source usually from the contactor. I hope you have a great day! Bonus: How to Test Your AC Fan Motor. My air conditioner is only about 5 years old and it wasn’t used very heavily each season and I had it covered when it wasn’t in use. Also check and make sure that you are getting 220 to 245 volts between L1 and L2 and when the contactor is energized 220 to 245 volts between T1 and T2. Hi Bill! Managed by Wooassist - Woocommerce Support www.wooassist.com. These capacitors will occasionally fail, causing a compressor to fail to start. Symptoms. Find Carrier Heat Pump Capacitor Parts at RepairClinic.com. Steve. My Air Conditioner unit will not do anything! Air conditioners run on electricity, but they don't receive power by simply plugging in a cord. If the compressor is dead then you might consider getting a portable AC or spend the night in a hotel. It blows cold, just not for very long. When I opened the door to check the capacitor, I found just one black cable connected to the fan side of capacitor and this is how it always worked. A contractor serviced my unit and left the new capacitor in the box it came inside my AC unit. Just curious, because my condenser fan is only running about 20% as fast as it should and the compressor is grinding as it fails to start. A failed capacitor will prevent the motor from turning over. Thanks, Hi Rick! You will measure zero resistance from a grounded capacitor. I’ve just replaced the inducer motor with another one, but same issue. Thanks so much to Mr. Walker for making this informative video! However when I show them the warm air comes out on the top of the fan is not warm all over, the air blows out ,one side is warm , another side is cold not cool. Also new Evaporator was replaced 6 years ago. If you do not have a capacitor tester…I would suggest taking the capacitor to an appliance parts supplier and ask them if they would be kind enough to test the capacitor for you. Air Conditioning and Heat Pump Troubleshooting Simplified, Air Conditioning & Heat Pump troubleshooting questions with answers index, Furnace troubleshooting questions with answers index, Gas & Electric Furnace Troubleshooting Simplified, Please click here to see the capacitors we sell. You can here a little humming sound inside the unit which is the low voltage contactor humming. Arnold’s Service Company, Inc. is a family-owned, Christian business that always treats customers with consideration and respect. I would like for you push on the contactor contacts with an insulated screwdriver and see if the unit will come on? Sorry that I can not be much help. That means the start capacitor is only needed at the beginning of each cycle, while the run capacitor runs throughout the cycle. Thanks to Kevin Miller for making this informative video! If this is a heat pump then I would think that you have a reversing valve that is stuck somewhere between heating and cooling mode or you have a bad TXV (thermostatic expansion valve). Below we have a real good informative video which shows how to troubleshoot and repair an air conditioner’s contactor and capacitor. I was thinking that there’s something in the contactor that’s not energizing the fan…other than that I think the main board is the problem. So I bought a new capacitor and nothing changed. I would recommend turning the power off and disconnecting two of the wires that go to the compressor to see if the breaker will stay on with those two wires disconnected. It could be any one of many problems that could cause your air conditioners to not work. I would also recommend making sure all wire connections are good and tight and make sure your contactor’s contacts are not burnt. Genuine OEM Part # SEN02525 | RC Item # 4959534. The one I need is a 43/370. I am sorry that I can not give you any more advice. I bypassed the contactor to see if it may be faulty, but had the same result. Is your air conditioner malfunctioning? Some times I would tape the capacitor’s connections so they could not ground against the body of the unit. Please see the picture below for the comparison between a good and bad dual run capacitor. You can always go up in voltage, but never down. We test all of the capacitors we sell with a capacitor tester to make sure they are up to specs before shipping. Anytime or comment below “ COM ” terminals on the replacement of a heat pump systems low on refrigerant are... Fan would not work requires the skills and expertise of an HVAC products supplier that will treat you the you. 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