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Outdoor unit will not run

I have a york unit and the unit stopped running one day. i can push the contactor in and the fan turns as long as i hold it in, so i replaced the contactor and still same problem. next i replaced the capacitor and same results.

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  • luvjww Jan 08, 2009

    it is mounted right above the capacitor next to the circuit board on the outside unit

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This sounds like a bad t stat if you are pushing in the contactor for the condenser outside if that is not it let me no where your contacter is

Posted on Jan 08, 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 Air Conditioners

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 Air Conditioners

1 Answer

Unit will not start up evaperator fan runs


Hi, if your indoor unit is running and you have high voltage to the outdoor unit as the compressor runs, I would check the control wires at the indoor unit, coming from the outdoor unit, and from the thermostat terminals to see if the condenser is wired correctly. I'm not sure what relay you are jumping out to get the compressor to run, and no fan, but if you look at the contactor where your high voltage leads connect, you can energize the contactor by pushing down on the plastic part of the contacts and the outdoor unit fan and all will start. Carefully, use a insulated screwdriver, or I have pushed them down with my finger to see, but be careful! You do have high voltage there or the compressor wouldn't have come on. If all runs when you do this, the thermostat control wires to the contactor have no 24 volt control voltage to it. Check your red and yellow wire connections. If you have a meter, check across the 2- for 24 volts. If you have no low voltage, this is your problem. Go to your indoor control section. If this unit has a circuit control board, look for a plug in type fuse like you would find in your car, a 3 to 5 amp fuse. Make sure its not blown. If the led light is on, it will be good. You have lost the low 24 volt power to run the outdoor unit. Check the wiring there, Red and Yellow. Make sure they are terminated. If none of this helps you or your not at ease doing these checks, call out the contractor and tell them that the outdoor unit will not run if it is new and just installed. They should have done a start up on it. Check the contactor first by pushing it down, it will spark but don't jump as it may scare you some. If all runs, check everything I have told you and you should find the problem. If you have any questions, contact me through this site by my user name, shastalaker7. Keep me posted.
Sincerely,
Shastalaker7

Jun 16, 2010 | Fujitsu 24C1 Air Conditioner

1 Answer

Unit does not run breakers on thermostat set to cool and fan is on auto but outside unit does not run


If this is a forced air split system, you can try a couple of things.

1) Turn off furnace open blower compartment door and remove thermostat wires. put a jumper between
R and Y. Put blower door back on and restore power.
If unit turns on, your problem is with the thermostat
or thermostat wire.

2) At the outdoor unit remove the electrical panel to
get to the contactor, push in the contactor and if the unit runs you need to check for 24v between R and C
at the control board where the thermostat wires are.
If you dont have 24volts you have a transformer problem.

Jun 15, 2010 | Air Conditioners

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 | Air Conditioners

1 Answer

AC Unit is not working


if you got high volt to the outdoor machine....make sure the thermostrat is in fact on.open the control box cover to the a/c.a round or oval soda pop lookin can thing should be visually noticeable.is it blown up.thecan top will be bulged.if it is the capacitor is defective.duel capacitors control phase shift for both motors...the outdoor fan and the compressor.a big black relay with the wires comming from the outdoor fuse box should be noticeable.this is the high volt contactor, is the contactor pulled in?beets the **** out of you???grab a screw driver by the insulated handle, not the metal part of the screw driver.manually push it in.did the fan start to go???if so bad contactor or no signal from t'stat to turn machine on.if not no high volt to machine(breaker tripped or failed) or fan motor seized leading to compressor O.L.

Aug 03, 2009 | Goodman CKL60AR60 Air Conditioner

1 Answer

Ruud UAKB-018JAZ outside condensing unit will not run


Trace the wires (small cable) going to the out door unit. This is your 24v control circuit. when it enters the outdoor unit it ties to wires routing through the inside of the unit trace these down. For AC units 1 usually goes directly to the "contactor" (the item you push in and the unit runs?) the other wire can also go to the other side of this same item. But I suspect it goes through other tings before it finally gets there.
Some items are the high and low pressure switches and a delay timer.
A red button sticking out where you can reset it is the high pressure switch and if it clicks and lets it come on you may have a dirty outdoor coil or a fan motor outdoor that is not operating all time.
A low pressure switch has no reset normally on AC or HP.
A delay timer will have 2 3 or 4 wires depending on the type of timer. 1 of these wires goes to the contactor (usually) and one of them feed this wire. remove the wire going to the contactor. now 1 at a time take the other timer wires and touch them to the wire just removed. if the times is bad the contactor will click when you touch one of them with the removed wire.

If its a heat pump you will have to make the contactor try to come on around the board. and this you will need some knowledge on which and what feeds your contactor. Here Id suggest a technician. If I had a way to see your setup and wiring I could talk you through this but its too hard to type and would take way too long.

Jun 27, 2009 | Ruud UAKA042 Air Conditioner

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 | Air Conditioners

1 Answer

Fan does not turn but motor seems to be running fine


Rain should not affect an outdoor unit. It is designed to be outside. The motor that you are hearing... could this just be your compressor running? If the condenser fan is not operational the compressor will run much louder. TURN THE POWER OFF! See if the fan will spin freely if it is pushed. If it doesn't replace the fan motor. If it does you need to check the power at the contactor going to the condenser fan motor. This is 220 volts BE CAREFULL.. If power is going to the motor and the motor is not running... Change the motor and capacitor. If no power is going to it it could be a bad contactor.
Good luck....

Apr 11, 2009 | Goodman CKL24AR24 Air Conditioner

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