Question about Ruud UBHC Air Conditioner

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One of Rudd outside units fan does not come on

We have two units. One of the the fan in the outside unit does not come on. Help! Winter storm coming and my downstairs is freezing!

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  • 10 more comments 
  • frank_nancyb Feb 13, 2009

    The particular outside unit simply doesn't work. If the unit is low on freon, I understand there is a automatic shut off switch to unit'? Could this be my problem? We've had to charge the system a couple of times in the past.

  • frank_nancyb Feb 13, 2009

    We hit the reset button and the unit started up. Do you think the issue is low freon?

  • frank_nancyb Feb 13, 2009

    I hope this will be a "fix ya"! We will charge the system and see what happens. Thanks! This is the greatest site!!

  • frank_nancyb Feb 13, 2009

    The unit began running. We turned it off while still in the heat mode. I connected freon guages. The low side read 136 and the high side or large side ran 165. This doesn't sound normal. I thought it would be a bigger differentiation that that? Any suggestions?

  • frank_nancyb Feb 13, 2009

    Okay, I am letting the system run for 15-20 minutes at 70 degrees, hoping if there were any irregularities that they would level out. I will turn the system off, reconnect the guages, turn the system on and get new readings and advise. Does this sound like the appropriate next step?

  • frank_nancyb Feb 13, 2009

    Do I wash from the inside out or just on the outside?

  • frank_nancyb Feb 13, 2009

    Will do and will be back in touch. I'm sure you'd like to hear the outcome.

  • frank_nancyb Feb 13, 2009

    After washing off coils, turned it off, hooked up the gauges. The high side or large line measures 125, the low side or small line measures 145. What do you suggest I do next?

  • frank_nancyb Feb 13, 2009

    And these readings are for the Heat Mode, not A/C mode? Also, what do you mean by "correct settings" on the gauges? They zero out when disconnected.

  • frank_nancyb Feb 13, 2009

    Low side: 136
    High side (large side): 165


  • frank_nancyb Feb 13, 2009

    Great! Thank you so-o-o much! For future reference, what should the settings be for heat mode? You certainly are the "guru" of HVAC! Any way we can commend you to your upline or supervisor? Thanks for hanging in there with us. Have a great weekend!

    Frank and Nancy


  • frank_nancyb Feb 13, 2009

    Awesome site! I will recommend it to all my friends!!! You guys are the greatest!

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  • Master
  • 1,902 Answers

Check to make sure that your contacts are ok and the fuses on the main breaker disconnect are ok. If those are good then replace the fan motor

Posted on Feb 13, 2009

  • 12 more comments 
  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Do you still need more about this problem?

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Yes the automatic shutoff switch could be the problem. Just a piece of advice though. If you are slowly losing freon. The company should charge the line with nitrogen and check for leaks. Your unit should not be losing freon at all. If it gets to low on freon by reseting the switch will not work until it is full again

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Yes, that is the only reason that the switch will go off. The problem is now though that if you continue to just do resets, you are going to ruin the compressor since it is running on low freon. You should really have the system charged and checked VERY well for leaks and the leaks to be repaired. If not after time you are just going to ruin your compressor anyways. Just a little extra info for you to save you from spending really big money.

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    You are welcome come back anytime you have a questions about anything. A lot of techs on here that specialize in a variety of different areas. Everything from cars to household aplliances, even on how to start a garden. So have a great weekend, and I hope you stay warm. Take care

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Actually that sounds WAY to high. You should be high side 160 and low side 70 to 75. It seems that you have to much freon in the system. This will also cause the switch to pop

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    You may want to shut it down. Take a garden hose and clean the coil out very well using a blast of water moving up and down. Try not to cross the fins due to the fact that you will cause them to bend and create blockage. Try this before the storm hits if you can

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    If you are going to shut it down then go ahead and clean out the coils. Then put gauges back on a fire it back up. If the coils get blocked or dirty the system cannot breathe. Like a car radiiator. If it gets blocked it will cause the car to over heat. This is how your system breathes

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Just spray it from the outside of the unit

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Yes please let me know what is happening or going on. I am certified tech for 11 years so I do know this just harder to do when on the computer then in person

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Let it run for about 15 minutes with the gauges on and check it again. Make sure gauges are on the correct settings. But it is getting better slowing. Let the freon circulate a little bit longer. Pressure is still to high. And to recount my other post on the gauge setting. The high side needs to be between 75 to 90 and the low side to be at 125-160

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Yes those readings are for heat mode. And the meaning with your gauges being on the correct settings meant that they were set to zero everytime they where plugged in. What is the reading on the system now?

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Ok you are good to go. I was telling you reading for cooling not heating. Sorry backwards today. Your settings are good. Why you tripped the switch is still unknown. did you have a power surge or failure anytime within the last 48 hours? Maybe while the system was running?

  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Low side: 125 - 145
    High side 155-185
    There is not a way to contact my supervisor. We are on here providing free tech support for different things or at low rate. We do not make service calls only coverage over the internet. You and your family have a great and safe weekend. And you are welcome for all your help and support. Take care


  • Jeremy Reddick
    Jeremy Reddick Feb 13, 2009

    Thank you you and your wife take care and feel free to come back at anytime

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