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Hello,im charles we have a jbs unit ducted unit the indoor turns on but the outdoor does not. i have put new capacitors and by pass the contactor, but i get a humming noise out of the compressor and the fan does not turn. I think it the compressor but dont want to change it if i can make it work. what else can i do? its a sanyo 10kw compressor .

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You can try a hard start kit that can be purchased from an a/c supply store. This hard start kit adds a little extra boost of power to the compressor that in the event the com,pressor is wanting to be a bit stubborn when turning on this kit will assist. It connects to the exsisting capacitor. As far as the fan not turning I would check to see if it is receiving voltage and if it is I would suggest changing the capacitor once more after testing motor to see that the motor is still in good shape.. To test the motor you need to check for continuity from the common of the motor to the power side of the motor. If you have continuity then motor 85% of the time, is still good and you need the capicitor replaced

Posted on Jul 17, 2009

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1 Answer

Indoor unit powers up indoor fan runs, has call for cooling outdoor unit will not run, has coms issue


Good. When it calls for cooling the wire conncets to a contactor in the outdoor.
Unscres the center of contactor and then check the contactor by pressing thr' ur screw driver maually. Just only for 5 seconds.
If it works, the contactor coil is defective.replace contactor

Feb 03, 2014 | Midea Heating & Cooling

1 Answer

The outside unit only goes on if i manually push the new replaced contactor ?


Hello, you need to verify if the contactor is getting 24 volts at the side terminals. Sometimes it could be a loose thermostat wire or the thermostat itself. Easy way to check is jump the RY wire at the thermostat subbase, if this turns it on you thermostat is the problem. If this does not turn it on then you will have to check the control board inside the indoor unit and the wiring leading out to the outdoor unit.

Jun 01, 2012 | Heating & Cooling

1 Answer

The unit wont heat it just blows cold air at the indoor unit. The indoor unit runs when the system is turned on and on the outdoor unit I can hear the compressor running but the fan wont spin.


It will most likely be the capacitor which goes to the fan itself. Make sure to secure power for both indoor and outdoor unit before attempting repair. The capacitor ratings will be printed on the side. Make sure the fan spins freely first with a stick or coat hanger, then check to see if the capacitor (usually shiny metal cylinder) is bulged like
a can of spoiled food. If this is the case then it has failed for sure. Power off at both indoor unit and outdoor unit before servicing. The capacitor ratings will be printed on the side of the can for example 35/5 uf 370V which is 35 microfarads and 5 microfarads with a 370 volt rating. They can be had at most appliance parts stores
for around 13 dollars. take a cell phone picture of the wiring or make a diagram to be sure. Also check the contactor for bugs or burnt terminals while power is disconnected as this can cause this symptom. (earwigs are notorious for this). Contactor is the device
with all the wires coming to it they come in two types. single pole and double pole. Serial number of unit or a good photo of the contactor helps the parts jobber determine which you have. Hope this helps.

Jun 10, 2011 | Heating & Cooling

1 Answer

Even I turn of the indoor unit via the controller , the outdoor unit is still running. I turn off the breaker and turn on still the the outdoor unit still running. What do you think the problem is?


Usually when this occurs it is a contactor burnt shut. If left to run, it will freeze the outdoor condensing unit into a block of ice. The contactor activates the compressor and
fan and the contactor is controlled by the low voltage from the thermostat. If the contact points are burnt shut the thermostat becomes of no use in controlling the outdoor condensing unit. The solution is to replace the contactor. Make sure all power to unit from all sources is shut off before attempting to replace. Hope this is helpful.

Jun 01, 2011 | Frigidaire Heating & Cooling

1 Answer

Air conditioner just conked out;only 3 yrs old


Is the indoor unit operating? If no turn the fan from auto to on at thermostat. If the fan comes on, that is a sign that you have 24volts
present on thermostat side.

Turn AC unit off outside,turn the thermostat as low as it will go. Open the electrical panel to the outdoor unit. There is a contactor located in the unit, push the plastic bar in the middle of contactor. If it pushes
in, you have low voltage wiring problem from the outdoor unit to the
indoor unit.

If you are skilled or know somebody that is with electrical, turn the power back on to the outdoor unit take a non conductive object and
push the contactor in, the unit may start. If it doesnt start,check the
breaker for the ac unit to make sure it is not tripped.

If the breaker is not tripped and the condensor fan comes on and the
compressor does not come on and the breaker does not trip, then it
is very possible that you will need a new capacitor and while you are
at it put in a hard start kit.

This unit according to you, still should have 2 years left on the compressor warranty.

Jun 18, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Does not cool


CHECK FREON LEVEL...IF GOOD CHECK FOR DISCONNECTED
THERMOSTAT OR COMPRESSOR OR CONTACTOR WIRE AT OUTDOOR UNIT WITH POWER OFF. CHECK FOR A BLOWN CAPACITOR OR UNIT GROUNDED OR BURNT WIRE. BAD BREAKER OR SEE IF OUTDOOR FAN COMES ON AND COMPRESSOR KICKS IN ( MAKES WHIRRING NOISE ) .

INSIDE CHECK BOARD FOR BLOWED FUSE, GROUNDED WIRE, MAKE SURE SYSTEM IS GETTING 24 VOLTS, IF NOT CHECK THERMOSTAT WIRES OR TRANSFORMER ON INDOOR UNIT.. IF YOU SET THERMOSTAT TO OFF AND ON AND THE INDOOR FAN COMES ON..YOUR GETTING 24 VOLTS.NOW YOU NARROWED TO THE BOARD OR LOOSE WIRE, FUSE OR THERMOSTAT. IF YOU TURN YOUR UNIT ON COOL AND AUTO AND THE INDOOR AND OUTDOOR FANS COME ON AND THE COMPRESSOR KICKS IN
BUT IS NOT COOLING...CHECK AND POSSIBLY ADD FREON...
ALSO CHECK AND MAKE SURE INDOOR BREAKER IS ON.

Apr 09, 2010 | Heating & Cooling

1 Answer

Outdoor a/c unit is cyclying on and off, not


Check the contactor at the outdoor unit. Look for burnt/pitted contacts. Replace if necessary and test your system again with the new contactor. If your contactor is okay, do the following:
When the unit shuts off, test for 24volts at the contactor coil. If 24 volts exists, test for 240volts on the LINE side of the contactor. If you have 24volts coil voltage and 240volts LINE voltage with the unit not running, the problem will be your compressor contactor or a wiring problem (should be evident with visual inspection). If you have 24volts coil voltage and no 240 volts, then you have an electrical problem (loose wires/connections) between your main circuit breaker box and your A/C. If you do not have 24volts coil voltage, then you have to determine why........try jumpering Y & R at the indoor unit (put fan in ON) and see if the unit runs continuously. If it does, the problem is either your thermostat or Y wire between your t-stat and indoor unit. If it does not run continuously, then the problem is in your wire between your indoor unit and your outdoor unit.

I hope you find this information to be very helpful to you moving forward. :-)

Apr 08, 2010 | Heating & Cooling

1 Answer

Indoor unit freezing up


THE OUTDOOR UNIT HAS A CONTACTOR WITH THE CONTACTS WELDED TOGETHER THE CONTACTOR CONNECTS TO THE COMPRESSOR AS IT TYPICALLY PULLS A SURGE OF 20 -30 AMPS OR MORE..WITH THE INDOOR UNIT IN FAN ONLY THE COMPRESSOR SHOULD NOT BE RUNNING. THE CONTROL WIRES GOING TO THE UNIT HAVE 24 VOLTS TO THE CONTACTOR TO PULL IN THE CONTACTS TO SUPPLY 220 TO COMPRESSOR.

Mar 09, 2010 | Heating & Cooling

1 Answer

Indoor unit freezes up, turn the mode button to the fan only to thaw out the indoor unit but the outdoor unit runs, What should I look for?


If the outdoor unit is not shutting off, your indoor coil will freeze up when the thermostat "satisfies" and shuts off the blower. The most common cause of a non-stop outdoor unit is the contactor. This part is usually black or brown in color. The line voltage wires that come from the service disconnect to the outdoor unit hook up directly to this contactor. If you shut all the power off (circuit breakers), the outdoor unit will shut off. You might be able to tap on the contactor to "free" it. This might allow the unit to work for a little while, but 99 times out of 100, once the contactor starts sticking, it will continue to stick. Replace the Contactor. Extra precaution needs to be taken as there are two seperate voltage sources......240 volts from your circuit breaker box and 24 volts from the air handler. You should use a voltage tester prior to performing any electrical work.
http://www.youtube.com/watch?v=lywcF7Lt2n0

I hope you found this information helpful.
Good Luck! :-)

Mar 08, 2010 | Heating & Cooling

2 Answers

Airconditioner wont come on


Does the indoor blower come on? If not you might have a low voltage problem in your thermostat circuit or blown breaker or fuse for your furnace which energizes the contactor outdoors. If indoor blower runs check if their are any fuses in your outdoor disconnect.

Apr 30, 2009 | Heating & Cooling

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