Question about Ruud UBHC Air Conditioner
Hi, the photo is showing a split system, indoor unit and outdoor unit. Is it just the blower fan inside that keeps running, or the entire a/c keeps going? Lets say its everything. I would start at the thermostat and remove the cover to expose the control wires. Find the R terminal,Red wire and use a small screw driver to remove it from the terminal. If the unit shuts off, the thermostat contacts are faulty and you will need to replace the stat. Even though its only low voltage, 24 volts, I would shut off power when you take the wire off. If your stat is not a digital, you will need to remove cover and lossen several screws to remove the stat to get to the subbase and wires. On a digital you don't have to. After removing wire, turn on power to see what happens. If it keeps going, you have a thermostat wiring problem either at the indoor unit where the thermostat wires come in and connect or at the outdoor unit where they connect touching together somewhere. The red and green or red and yellow conductor wires have a bare spot and are calling for cooling all the time. You will have to look for this, it can be very difficult to find unless you can ohm out the wires. If its only the indoor fan running and not the outdoor unit, it still could be the stat, or you have a fan relay that is stuck. If you remove the panel on the indoor unit and look at the wiring diagram, don't let it confuse you, look for this, IDF and follow the wire or wire to FR fan relay. Depending on what type, you can try tapping on it with the but of the screw driver carfully, to see if that may shut it off. If not you will need to go to a a/c parts house or a appliance parts house to find one. Draw a good diagram so you know how to hook the wires back up, or you can get into more of a bind. Its worth doing this then trying to remember. Do these things and keep me posted on this. By removing the R, red wire at the stat will kill power to the fan if the stat is the problem, so you don't have to remove the G, green wire for fan, only the red. I will wait to hear back from you.
Best of luck,
Posted on Jun 06, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Oct 16, 2016 | Computers & Internet
Jan 16, 2016 | White Rodgers Home Security
Dec 30, 2015 | Cars & Trucks
Sep 05, 2012 | Computers & Internet
Dec 19, 2010 | Computers & Internet
Nov 08, 2009 | Toshiba Satellite A135-S2386 Notebook
Aug 07, 2009 | Acer Computers & Internet
Jun 01, 2009 | Samsung HLR5067WX 50" Rear Projection HDTV
Feb 06, 2009 | 1996 Cadillac DeVille
153 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: