Question about Ruud UAKA042 Air Conditioner

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Need to change the relay switch

My Ruud Air Conditioner is outside. Sometimes it works fine and sometimes it will not go on until I take the cover off and hit the relay with the handle of a screw driver. It seems to not make contact every time it is switched on. How can a sget a replacement part and change it?

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Http://www.expertappliance.com/ruud-ac.html
Go here pick the part and enter the model number and you will be able to order it

Posted on May 16, 2009

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Posted on Jan 02, 2017

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3 Answers

How do I get my AC running again? Ruud UBHC AC unit isn't running. Started yesterday or today.


Sounds like there is no control voltage. Either the transformer to reduce the voltage from 110 volts to 24 volts is not producing the 24 volts needed for control voltage, or most furnaces have a small 3 or 5 amp fuse mounted on the main control circuit board that may be blown. Other "outside circumstances" may involve a break in the thermostat wire...more than likely the red wire if you are getting nothing to work. I have seen evidence of "critters" that have chewed through the low voltage thermostat wiring that would keep the thermostat from controlling anything. To check this, go to the furnace and jumper the red & green wire to get the fan running just to isolate if it is a thermostat wiring severred. Good Luck.

Dec 11, 2014 | Ruud UBHC Air Conditioner

1 Answer

I have RUUD furnace with build in coil for air conditioner and Weather King compressor outside of my condo. ALL EQUIPMENT IS 4 YEARS OLD I didn't have any problem with heat at winter, but in summe


When you remove the panel to the unit it turns off the power to it. The reinstalling the panel will reconnect power and allow the unit to reset. So the cheapest and easiest thing you can try is to replace the thermostat. Make sure you see how many wires you have connected to your existing tstat and buy near the same thing. It's possible that the tstat is acting up, not allowing the unit to cool when the temp demands. And turning off power is resetting the tstat as well as the unit. It will be hard to troubleshoot with the info provided so a new tstat will be worth a shot. Hope this helps!

Apr 07, 2017 | Ruud Matching Split Air Conditioner

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Air Conditioner was working fine last summer but outside fna not working. Not hearing any sound at all. I can move the fan amanually and it seems fine. There is an electrical box next to the main...


There is a relay in the outside unit. Check for 24 volts a/c at the two wires coming from the furnace. also there may be a mouse nest in the control comartment where the relay is and they tend to chew up wiring insulation and sometimes wires get disconnected .

May 13, 2011 | Carrier 38CKC042 Air Conditioner

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My Ruud heat pump fan stops after running a minute. It is 10 degrees out now and defrost mode seems to work fine. It makes a humming sound when the fan gets stuck. Sometimes if I take a ruler to it, it...


Hi,
The capacitor for the fan motor is bad...replace the capacitor and you'll be good to go...


Here is a tip about troubleshooting your air conditioner...


There are many things that can cause your air conditioner not to cool...

Air Conditioner Trouble - Review the Possibilities

heatman101

Jan 23, 2011 | Ruud UBHC Air Conditioner

1 Answer

I have t874r1434 thermostat. when I turn it on the heat pump model UPLA-030JAZdoes not quick. but the inside unit does. Sometimes it will work. WHY this problem,


Sometimes the contactor get welded shut. shut off the power to the outside and inside units. Go outside and remove the electrical cover. There will be a big black switch looking thing inside. (The electrical supply lines will connect to it). Some off these switches are open and some are not. If the switch is open just make sure it is pulled out. You can do this by pushing in on the button. If the switch has a cover on it, remove the top, with a Phillips screwdriver. Then proceed as above. If the contactor is pulled in pull it out with a pair of pliers. The unit will likely start functioning properly for a little while but the switch will need replaced as quickly as you can.

Jul 27, 2010 | Ruud UBHC Air Conditioner

1 Answer

Sometimes, when the inside blower shuts down, the


I was leaning towards a bad contactor. Either sticking sometimes or not making good contact. I would inspect the contactor for pits or burn marks near the contacts. DO SO WITH POWER OFF of course...but, what's the reset button you are referring to?? I'm assuming this is a heat pump, please send model number!!

Jul 06, 2017 | Ruud UAKA060 Air Conditioner

1 Answer

My Ruud outside condensing unit stops running when the outside temperature get about 90 degrees. I can push the reset switch and it runs fine until the next time the temperature gets that high. What can...


Check condensor coil to see if it is dirty. It is kicking off on high head. Take a water hose and wash the coils this will help. Take the cover off and wash the coils by the compressor those get the dirtiest. TURN OFF POWER FIRST. Russ

Aug 16, 2009 | Ruud UAKA042 Air Conditioner

2 Answers

Cooling problems


Check the filters inside and the evap coil to make sure it isnt filthy. The evap coil can be cleaned with a credit card if its wet. The large line outside should sweat all the way to the compressor if its got enough freon. Will freeze when its cool outside or not sweat at all if its low. Good luck with it.

Jul 30, 2007 | Ruud UAKA030 Air Conditioner

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