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Jerry R Rodriquez Posted on Jan 18, 2015
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I installed a run capacitor for my blower motor on my RUUD ac model UGPH10EBRJR. now it runs all the time. I even disconnected my thermostat and it kept running. is it my thermostat? or something else

Changed blower motor capacitor.

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Todd B

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  • Master 572 Answers
  • Posted on Jan 19, 2015
Todd B
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An open limit switch may make the fan run all the time. Try disconnecting the Green wire @ the furnace...if that does the trick, then either the thermostat fan relay is stuck, or there is a short between the Red & Green wires somewhere in the thermostat wire.

5 Related Answers

Anonymous

  • 288 Answers
  • Posted on Mar 05, 2008

SOURCE: RUUD Heater and Ac MODEL #UGPH-07EAUER

It sounds like the thermostat is not functioning correctly. Has it been changed recently? I think the green wire is connected directly with red somewhere, maybe touching within the wiring in the wall. Also make sure the thermostat is set to auto not on. Sorry if you knew that but you would be surprised how many people don't.

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Anonymous

  • 400 Answers
  • Posted on May 08, 2009

SOURCE: Dometic Duo-Therm - 13,500 B.T.U. Model #3107541.009 - Serial # WA346967 - Yr. 1999-2000. Blower motor will not start. Replaced the start capacitor - no help. It will run by spinning the motor by hand

Yes you should try replacing the run capacitor.

Dennis Boxerman

  • 1306 Answers
  • Posted on May 11, 2009

SOURCE: Ruud Achiever 10 heat pump - outside fan won't shut off

Definately get this checked out. Some thing has shorted just enough to let voltage "Feed back" and keep the fan running. Could be capacitor, wires rubbed through each other, etc. A reset is a safety that is used when there is an overcurrent or over pressure situation. No reset set for this situation.
There is always an outside chance that if you touch the unit while standing on wet ground, you may get shocked. I firmly believe that something is allowing power to the fan in a feedback condition so don't let this go as it may cause damage to other parts.

Good Luck and let me know how you make out on this.

Anonymous

  • 116 Answers
  • Posted on Jun 17, 2009

SOURCE: blower wont run

make sure getting 220 v ac on imputs the relay my be bad hook up fan man to power check to see if getting a call from stat to make fan run green to common 24v ac hope this helps

Anonymous

  • 16 Answers
  • Posted on Jul 03, 2009

SOURCE: The outside fan motor (OFM) will not turn off.

You probley have both power wires hooked to the bottem or power side of the contactor switch, one should be pluged into the bottem of the contactor, and one to the top, so when the switch opens, it breaks contact between the two wires (turns motor off).

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I have a RUUD Model UGPH10EBRJR. the compositor near the blower motor in the ****** is bubbling out some kind of jell substance. Do I need to change it and do I call it hte run or start compositor. wh

Hi Jerry, yes, whenever you see either end of a capacitor bulging and or leaking fluid, the capacitor is bad and needs to be replaced. It may still be operating the motor ok, but it will eventually fail and the fluid is also highly corrosive. Simply match up the proper voltage and uf to get the proper replacement. Example: 5uf 370 volt or 7.5uf 370 volt or 10uf 440 volt. The uf stands for microfarads. Hope this helps!
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Hello all My Rudd AC unit will start and run find maybe for 10 minutes and cool air then the fan outside will stop and unit hums or hisses and blows hot air inside vents. I changed out Thermostat and Run...

Welcome to the world of Ruud! Ok James heres the deal. It sounds like the condenser fan motor has failed. Its not a repairable item but the motor is not too expensive. Disconnect the main power at the fuse block on the side of your house next to your a/c. Remove the screws that hold the top fan section and carefully turn the fan/panel assembly over taking care not to stress the wires. Determine how the fan is mounted (probably 4 screws) and go find your new motor. Both Rheem and Ruud use the same motor mounting. Most a/c supply houses have a motor that will fit or go to graingers. Make sure you get a matching run capacitor for that motor. It will have separate wires and not share any wiring with the old capacitor. The old capacitor will have to stay in place since it is also connected to the compressor. The old motor will have 3 wires and the new one 4 (2 brown for the capacitor and 2 others to put on the contactor that the compressor wires go to). If its a heat pump it could be a board and youll need help. good luck
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I'm not sure what setup your unit has but the fan relay sound like it is bad. If your blower connects to a circuit board then the board could be bad. Different units use different ways to control the fan. Some use a relay like I mentioned. Some use the circuit board (newer units). Some even use a sequencer. The first step will be finding what yours is using. Since you tried disconnecting the green wire from G already and it didn't cut off I would think your thermostat is not the problem. Let me know what you find.
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I have a Ruud AC DATE: 12/00 Model:

Hi,
Here is a tip about trouble shooting your air conditioner...

I would check the air filter and the blower motor...
sounds like a problen with one of them...

Air Conditioner Trouble -Review the Possibilities
http://www.fixya.com/support/r3571569-air_conditioner_trouble_review_the_possi

heatman101

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RUUD UBHA-14 J11SFJA air handler. The fan (blower) doesn?t runs

Absolutely, however, you want to properly diagnose the reason why the fan is not running. It could be a less expensive part than the fan motor itself.
First, check to see if you have the proper voltage going to the motor. I believe your motor requires 240volts ac. If you do not have 240 volts, you have a control problem.......either the thermostat is failing to close R & G or your blower relay may have failed to close the contacts necessary for your fan to operate.
If you have the voltage, then you want try spinning the blower wheel with your hand. Does it spin freely? Is the motor warm/hot? If so, turn everything off for an hour or so. As soon as your energize it, try spinning the motor with your hand again.....if it spins freely with no resistance and then starts running by itself, the problem is the run capacitor (approx $20.00 depending on where you purchase it from). If there is resistance when you try to spin it, the problem is most likely with the bearings and you will need to replace the motor.......if you have to replace the motor, go ahead and replace the capacitor also, making sure it is properly "matched" with your new motor.

I hope you find this to be very helpful to you, moving forward. :-)
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Blower not working

check your thermostat first to see if it may need batteries (some of the newer types of thermostats requir batteries to work properly, These are the digital types) If there isn't any problems there then check the electrical panel to see if there is a breaker for the furnance and if it has been tripped. If not, go to the furnance closet and check to see if the unit is plugged into the electrical service for the furnance, if it is plugged in I would suggest checking to insure you have the correct voltage comintg into the system. If so and you do have correct voltage coming into the furnance then you have a bad blower motor or blower motor capacitor. The capacitor can be checked with a meter that checks capacitors I would have this checked first and then the motor However if you have to replace the motor at that time I would replace the capacitor. Good Luck hope this helps


Dave
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I have a Ruud 90% furnace (18 yrs.old) Several days ago, I had a complete ice-over of the evaporator coil. Filters are clean, and airflow unrestricted. After defrosting coil (48 hrs.) while testing, I note...

The motor shutting off after 30-45 seconds means it is probably getting hot and shutting off on thermo overload safety in motor. Two things can cause this: #1 is the motor is defective. #2 the run capacitor has gone bad. If you want to try and save money replace the run capacitor 1st and try it. If that doesn't work replace the motor. You would replace the run capacitor at same time anyway.
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Ac comes on,but blower does'nt..nothing wrong with blower!!!

check the wiring at the thermostat has anyone touched it g terminal is for the fan
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RUUD Heater and Ac MODEL #UGPH-07EAUER

It sounds like the thermostat is not functioning correctly. Has it been changed recently? I think the green wire is connected directly with red somewhere, maybe touching within the wiring in the wall. Also make sure the thermostat is set to auto not on. Sorry if you knew that but you would be surprised how many people don't.
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