BOJACK 65+5uF 65/5MFD ±5% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight Cool or Heat Pump air Conditioner. I can’t even figure out which wire would go to what! In April I replaced my York condenser fan, blade and both capacitors (and it has worked fine until now. Also there may be two “hard start capacitors” (which are capacitors in series with a relay to add capacitance for a few seconds to get the motor turning and they look like a capacitor with a plastic cap and have two leads comming out of the top) in the circuit that are add ons and will not show up in the schematic. If you’re having any of the above issues, there’s a simple way to test the energy charge from your capacitor. I always hear people calling it a dual run capacitor, that is where the confusion comes in. I Changed the single capacitor by dual capacitor.there is HERM,FAN.C.i gave the connection to FAN and C but fan was not run ,i need to rotate by hand,If once i rotate then automatically Run Continuously. The compressor requires a higher current to start, the fan lower. It would be like flooding a gas engine. Its all jibberish to me!!! If so, how do I wire it in? I have checked the capacitors and they all read within specs. When I got home from work the condenser fan was running backwards and since it was later in the day it was cooling better. I am holding off on replacing the blower motor at this time. This is also a sign of a bad or failing AC capacitor. Most new condensing units are specified for 440VAC capacitors, … The OG also said that the amps the compressor was pulling 12 something should be 7 something. As far as I can tell it is wired correctly. Get the cost of 1 ton, 2 ton, 4 ton and 5 ton ac unit. I was careful to replace the same capacitor specs. Thanks for the info. Polarized capacitor 2. If the wrong run capacitor is installed, the motor will not have an even magnetic field. It was cause your system to draw more power than needed and the equipment we work harder to meet the demand. Answered by rv: My AC fan was on but not blowing cold air. The AC capacitor gives your AC system the initial boost it needs to turn on and also provides continuous power for it to keep running. Bryan Orr. Or my personal favorite, just touch all the terminals to the casing (sheet metal) on the unit. The fan outside works properly. Once the AC compressor is at approximately 75% to 80% its full operating speed, back EMF (electro-motive force) generated by the compressors rotor creates a magnetic field that opens the relay, taking the start capacitor out of the circuit. Guess it’s time to order a new fan motor. Can i use this -Dual Run- RoToM 80/5 MFD 440/370v, 3 prong capacitor, to start a lawn tractor? Compressor H29B18UABCA OC 25, The run capacitor is a dual round (3 prong) the Hard Start Cap is 161-193/250. (If you have two capacitors one is for the compressor and one is for the fan motor.). A lot of A/C techs are not very good at what they do … and many who are good at what they do are not quite ethical at times. One is going to the condenser fan, that one is just one wire all by itself . Area above capacitor is charred. So the existing capacitor specs are 55+7.5 MDF and 370 VAC 50/60 HZ. Just talked to another company and they said they do sometimes do that. I changed it out. So now I have a new fan motor and a new capacitor with the correct ratings. My a/c unit’s fan capacitor has gone out (visually inspected it), and the capacitor on my compressor is a dual cap. The fan paperwork shows the 3/370, but still not starting. I did not ask questions and just paid for the service …Today the Capacitor went bad again. Help me pleaseeeee. C – Common I (mistakenly) ordered a new 40/5 dual cap, and I was wondering if it’s possible to move from having separate cops to using just the dual cap. The other 2 wires are a red (C)ommon wire that goes to the contactor and a yellow wire to the (H)erm. I have seen online somewhere that some fans (OFM) do not need a capacitor to start and run. Your system won't work -- and may even burn -- if you fail to install the … Thanks, Eric. Your email address will not be published. will wrapping electrical tape around my a/c dual capacitor cause it to overheat and fail ?? Anyhow he charged us $330 to replace the run start cap and because I’m pretty sure he didn’t have the right one on the truck, sold me a song and dance about how a 55/5 cap would give our dying compressor the jolt it needed to start over the 45/5 that was in it. You need to use a relay circuit when wiring in the hard start? He ripped you off, sorry to hear that. Could you explain to me what 440/370VAC/B means? Could it be the fan motor was working working off two capacitors and I accidentally disconnected one? If someone doesn’t have the necessary multimeter to check capacitance and if deterioration but not failure of the capacitor is predictable and will still permit the equipment to run but with slower fan and compressor speed, less efficiency and greater wear, this would seem a good idea. Why is the capacity higher? You may also one to check your L1 and L2 load and non load side to ensure you have the necessary power if not it could lead you to believe its the problem. Connect it to bad you can place the non-polarized capacitor in any way to tell mean that it ’... Multi meter is on farads and the higher one wires to the,. Uncommon to find what you need to replace a dual run capacitor new. How you know you need to know which is common, fan am! If rated for 12 purchase a new AC capacitor %, and HERM on a year. 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