Question about Ruud UBHC Air Conditioner

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Ac heat not working

I have a Ruud UBHC 14J07NFD and the heat is not working. Worked a couple of days ago and last night was blowing cool air.

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  • dadtorad Jan 17, 2009

    Mine does the same. Where are the manual override switches located within the burner compartment?

  • Philip187 Jan 29, 2009

    I have a simialr problem.



    The two lights are GREEN in the main controller unit.



    UGLU, -f4892



    Checked the manuals flwo chart" noticed the heating element was not glowing bouight a new one and fitted still not working.



    - Blower starts



    - Does the presurge



    - Igniter does not glow



    Q.1 vents seem okay - how does one check that - no dead birds found)

    Q.2 how the heck does one check that the " air providing" switch is (closed) ?



    I am now going to check the wiring and 115VAC to the igniter and main board.



    Thanks RUUD

  • RDrennan May 11, 2010

    If it worked and is now only blowing cold air it may just be in a lock out situation. Check the outside unit for error codes and respond.. What you have is a "Heat Pump" the model number you gave is for the air handler unless thats all you have with heat strips. Check the outside unit and see if the breaker is tripped...



    Richard (Rick) Drennan
    Global HVAC Distributors
    RUUD Field Support Representative / Instructor
    rdrennan@globalhvac.com
    900 Spreckels Ave
    Manteca, Ca. 95336
    Office (877)448-7263

  • Anonymous May 11, 2010

    need more info.model and serial numbers is a good place to start.what type of stat do you have.is it programmable?if so, did you try to turn heat on manually using the programmable t'stats override/hold feature.



    it could be something as simple as a misprogrammed t'stat.

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  • 22 Answers

Rheem/Ruud are the same equipment with different stickers; they come off the same assembly line. 1) check that you have full air flow: all the vents are open and clear, the return grill is clear and the filter is CLEAN. 2) On the older models there are 2 each 1/4" screws on the air handler that have to be removed and that allows the panel where the FACTORY FILTER is located. If you have a filter in your return air grill, remove the factory filter, if not, leave it in and remember to clean it. While the bottom cover is open, look at the fan to see if it is clogged. DO NOT put your hands in there unless the main power to the A/H is OFF! 3) Go outside to the condenser and you will see a small red or green button at the bottom of the control panel access. Press it. If it clicks and the unit comes on, either the air flow inside is too low (see above) or the unit is overcharged with refridgerant. If everything is clean and there it plaenty of air flow, you will need a technician with the proper gauges, tools and knowledge to set the charge correctly. Be smart: price shop and get references. Ron

Posted on May 07, 2009

  • Ronald Walden
    Ronald Walden May 10, 2009

    Future reference:
    1) Furnaces in general don't have "override" switches - this helps in not having a large explosion.........
    A furnace goes through more checks than the Shuttle before it lights!
    First, on the control board, are there any lights blinking, if it did
    light, there should be. Somewhere there is a placard showing what the
    number of blinks means; I need to know what is says on the placard. In
    the meantime, check the draft fan sensor - it looks like a small flying
    saucer towards the top. Blow and **** on the tubes and listen for a
    clicking sound and look for the presence of any water in that tube.
    That switch verifies that the draft fan is on and the mains will not
    fire if the control board doesn't get the proper sequence of
    signal......off, sensor open, fan on, sensor closed, verify pilot, fire
    mains, verify mains all it (sensor at opposite end from pilot). Hope
    this helps, if not, get back to me with that control board code. Ron


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