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The Dual capacitor went out and I replaced it with the same numbers listed on the side. I went to set the temperature and turn it on and it will not even turn on. The thermostat has power, but the A/C unit will not turn on. Do I need to wait awhile for it to work?

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Check the power to the outdoor unit it may be off...

Also the t-stat will have a five minute time out...


Posted on Sep 08, 2010


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Bryant/Carrier Roof mount heat pump 664ANX042000AAAF wiring diagram and capacitor help. Which capacitor is for inside blower motor?

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It appears this is a 7.5 microfarad (mfd) capacitor like the ones installed on fans. If your fan motor has two brown wires, in addition to the black and white power wire, just fasten the two brown wire to the leads on the capacitor and insulate the connection with electrical tape and mount the capacitor in some dry convenient location inside the controls section of your unit. Be carefull to mount the capacitor in a location where it does not short an electrical connection.

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Aug 19, 2014 | Goodman Heating & Cooling

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Just blows straight air

First thing I think of it the capacitor that operates the Fan and Compressor is just working on the fan side. These Capacitors are dual type. Locate the capacitor and after you shut down the electricity remove the wires and mark them so you know which ones go where. Take to parts house and they can fix you up with a new one of right size and style (either round or oval) make sure they test the capacitor there is one more thing it could be but taking a guess the unit is relatively new. if not the problem get back with me Ken

Jan 12, 2014 | Electrolux E23CS75SS Air Conditioner

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The outdoor fan is turning slow. it sounds like the compressor wants to kick on but it wont. the motor is really hot. what could this be

Sounds like a bad capacitor for your fan motor. You can test that by following the procedure listed below.

***CAUTION*** Anytimeyou are working on or around electricity you run the risk of shock and ordeath. Please consider consulting an expert before you open an electrical panelor appliance. ***CAUTION*** Capacitorshold a large electrical charge and will discharge upon contact with your skin.This is enough to stop your heart and cause death. If you are not confident ofyour abilities around these devices then please leave any testing or repairs toa professional. The capacitor is inside the unitand you have to remove the cover to see the inside of the electricalcompartment. You will need to discharge the capacitor before you start workingaround it. To do this take a screwdriver or other long metal tool with aninsulated handle and cross the three terminals on the capacitor to ground. Youthen remove the wires to the capacitor terminals, taking note of which wiregoes to which terminal. Capacitors are rated in MicroFarads (marked by a µF symbol) and a dual capacitor, shown in the image below,will have two ratings listed like this "35/5µF" or something verysimilar. You must have a multimeter thatreads micro farads to check a capacitor. You do that by placing one probeon the C or COM terminal and the other probe on the FAN terminal and it shouldread the small number of the rating, for example if your capacitor is ratedlike this: 30/7.5µF then the fan rating will be the smaller of the two numbers.In this case the 7.5µF (seven and a halfMicro Farads). The HERM terminal is the one for the compressor and will berated the higher of the two numbers, I.E. the 30µF on the capacitor. Check themboth and of they are more than 6% lower than they are supposed to be then thecapacitor is weak and needs replaced. If you read 0 (zero) then the cap is badand needs replaced.
Typical dual run capacitor C terminal is common, HERM terminal is compressor and FAN terminal is for fan motor.

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1 Answer

P291-3554RS dual cap is the Carrier part that is called for.

Are you talking about a start capacitor or a run capacitor?
Usually a dual capacitor is a metal can type capacitor with 3 terminals.
C - which is run for compressor and fan.
Herm - is start for the compressor.
Fan - is start for fan.
A start capacitor is a black plastic capacitor
It is in series in the run wire to the potential relay, one side goes to run on the run capacitor and the other side goes to #1 on start or potential relay.

Feb 13, 2010 | Heating & Cooling

1 Answer

Fan isn't turning

turn the power off, take the cover off the top and try to spin it. If it spins hard then it was the motor. If it spins easy the the capacitor is probably bad which
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Usually this can be a dual capacitor which also controls the compressor. Sometimes just replacing
the capcitor can do the trick, if not then the worst
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Feb 02, 2010 | Heating & Cooling

1 Answer

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You have dual zones that are controlled by temperature actuators the passenger side has lost its memory or has gone bad you can put it in self programming by disconnecting the battery for ten minutes then hook it back up start the truck turn the temperature control on but do not touch any other controls let it go thru the self programming for about 6 to 7 minutes then select your temperature you want if it still does not work properly you may have a bad actuator or a bad connection at the actuator

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I have a ruud model number upne 060 jbz the compressor is not coming on .could it be the capacitor?

It could be, could also be lots of other things. Is the indoor fan comming on? do you have 240 volts at the contactor? both sides of the contactor? Is the contactor pulling in? Is there 24 volts on the low voltage side of the contactor? is there voltage at the compresser? Did you ohm out the windings?

Apr 12, 2009 | Heating & Cooling

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