Question about Heating & Cooling
Unit stopped working today. Checked breaker, roof fuse, and inside fuse. Inside fan does not come on while thermo on fan "on". No cooling. Slight humming sound coming from unit in hallway ceiling. Water pan clear. Unit got dusty during construction remodeling job. Thermo lights up fine and can be adjusted, but no cool or heat. Any ideas? Where can I get troubleshooting manual. I have tools and a multi-meter.
Posted by Anonymous on
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.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
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
The Mitsubishi units have to be reset by turning off the indoor units by switching the remote or thermostat to off. Then turn off the breaker to the outside unit(s). After 30 seconds,turn on the breaker and then you can turn on the remote for cool. If no lights come on on the inside units, most likely you have blown a fuse soldered on the main PC board. At this point, call your technician. A goos tech will be able to wire in an in-line fuse holder so if it should happen again, you can easily replace the fuse. If you do see a light or two come on at the indoor unit but the outdoor unit does not start after 3 or 4 minutes, sounds like you will need to call a technician. Most likely you have a blown fuse on the main PC board of the outside unit. It is not an easy one to replace. Good Luck!
Posted on Sep 04, 2007
NEVER POKE AT ANY PRODUCT on a heating and cooling system it need to be serviced by a trained tech that knows what is going on in the unit, poking around can cause death and at the least a large sum of money if you poke the wrong place
Posted on May 20, 2008
The capacitor is located inside the control panel on the outside unit. It is round or oval and silver in color.It runs the outdoor fan and the compressor both.
The terminals are marked= C, /F or fan/, H or herm. C-F-H.
The microfarad rating is printed on the capacitor. Make a color code wire diagram before removeing wires.
Disconnect power to the unit. Use a insulated screwdriver to short out the terminals on the capacitor before removing it.
Posted on Apr 27, 2009
first look for red button neer the copper line set if has one push it second inspect thermostat wires for weed eater damage check disconnect for fuses check breaker at main panel pull disconect and remove cover check stat wire connections look at the capacitor if swelled up on top bad if all look ok put disconect in using insulated object manually push in contactor if unit comes on check for 24 volt ac on yellow stat wire to common if none stat wire could be loose at indoor unit or stat bad hope this helps you
Posted on Jun 06, 2009
Tips for a great answer:
Apr 17, 2014 | Ruud Heating & Cooling
Aug 21, 2011 | Ruud UBHC Air Conditioner
Jun 04, 2011 | Ruud UAKB048 Air Conditioner
Jun 12, 2010 | Ruud UAKA018 Air Conditioner
Jul 20, 2009 | Amana ABC2037SS Air Conditioner
Jun 05, 2009 | Ruud UPMC036 Air Conditioner
May 13, 2009 | Ruud Matching Split Air Conditioner
Apr 26, 2009 | Ruud UBHC Air Conditioner
35 people viewed this question
Usually answered in minutes!