Visual inspection may reveal it to be bulged, or have a blown out safety plug. . I was told it went out so i bought a replacement a aftermarket with the 4 wire ,and the direction wires and a ground wire. If the capacitor doesn't hold a charge, or the resistance reading never approaches infinity, it probably needs replacement. Rule of thumb on wiring the capacitor is: Herm on capacitor goes to the start winding on the compressor, Fan on capacitor goes to brown fan wire that goes to the fan, and Com on the capacitor comes off one leg of the contactor to provide power to the capacitor. Once the capacitor has been discharged as described just above , then it can be tested with a multi meter. Please check with your local government agency.
Thanks for asking this question. I have 2 capacitors in my unit but fan is not connected to large round capacitor. A higher number on voltage 440 versus 370 is okay. A secondary timing circuit that ensures that the capacitor is not permanently left in the start winding circuit 4. One way to prolong the inevitable and that would be cost effective versus purchasing a new system would be to install a hard start kit. I see a red wire coming off the contactor to one side of the capacitor and the other side runs back to the compressor which I assume is the start side of the compressor.
Before the fan went out it would blow cold. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Is it just a starting capacitor for the compressor and fan motor, or is it a run capacitor for the compressor and fan? If you have two capacitors then one is for the compressor and one is for the fan motor. Killed the power and waited a few minutes. Replacing fan motor and getting new dual capacitor.
If you are not confidant that you can remember which wire connects to which terminal, sketch out a rough wiring diagram noting the location of each wire before disconnecting them. Be sure to check your wiring diagram before making any assumptions. Capacitor Wiring There are two varieties of air conditioner capacitor: the start capacitor and the run capacitor. I forgot to mark the wires I took off. Most states require the installer to be licensed. This shows how to diagnose the problem and replace the part. There are important reasons for this that can affect the comfort produced by the appliance.
He ripped you off, sorry to hear that. The wiring for the air conditioner condenser fan motor will likely have the black wire noted in the wiring diagram go directly to the compressor contactor. Always, double and triple check that circuits are dead. Compresser stays running but fan motor stops. You need one small brown wire which goes to F from the fan.
Use your wiring diagram to reinstall the capacitor wires. I always hear people calling it a dual run capacitor, that is where the confusion comes in. When working around the outside compressor unit, be careful to not step on the pipes coming out of the unit. Motor starting capacitors can hold a charge for days! Depending on the unit one or two wires should go to the fan motor. Since the capacitor is 45mf a fan cap would be much less and one wire leads back to the compressor, then it should be the start capacitor for the compressor. Of course, I do it all the time and can probably wire a capacitor to a motor in my sleep. Move to the outside compressor unit.
I was surprised though that no one has asked how to properly discharge a capacitor. The compressor unit may try to start and then shut down. You can save this picture file to your individual device. We have been running the system since then with no apparent odors now. Or see for photos identifying the terminals on start and run capacitors and indicating which wires are connected to which terminals.
If you want to know more or withdraw your consent to all or some of the cookies, please refer to the. The first wanted to change the blower motor and the second tested and replaced the capacitor for the blower motor. Take the stress off of your air conditioner with a new hard start capacitor! We also have some more images linked to Air Conditioner Capacitor Wiring Diagram, please see the pic gallery below, click one of the graphics, then the picture will be displayed large, as shown above. We cover those factors in the linked to articles. Get as much information as possible especially if you have never done it before.