Question about Heating & Cooling

5 Answers

Wiring Diagram for Ruud Heat Pump

Can you tell me where I can get the wiring diagram/schematic for my heat pump. Had a water problem and the diagram on the inside panel for the electrical connections. Need to know what the orange wire from the air handler (inside the house) connects to the thermostat and/or outside unit.


Posted by on

  • Anonymous Apr 28, 2009

    The Old Rheem out door Ht/Pump has only 4 wires comming into it; (low-voltage) from the dwelling, The new GOODMAN 4-ton - Ht /P which is a replacement has 5 wire (low-voltage) connectors: yel / red / wht / blu / orange

    How do I connect these wires ?????

  • Ed Riggle Sr Oct 28, 2017

    Orange from the Indoor Air Handler Unit gets connected to the ORANGE wire on both the OUTDOOR Heat Pump Unit as well as ORANGE on the Thermostat. ORANGE wire is used for the REVERSING VAVLE of the outdoor unit.



5 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

Unfortunately, the wiring diagrams for heat pumps are not so easy to come up with. The outdoor unit will have its own diagram, but may not include the indoor air handler and will probably not include the thermostat. That said, the orange wire is commonly run from the thermostat to the reversing valve in the outdoor unit. This wire is usually not connected to the indoor airhandler. The orange wire is usually used in a unit that has the reversing valve energized in cool. Ruud, however has its reversing valve energized in heat. Probably not useful but maybe helpful

Posted on Mar 26, 2009

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

Depends on t stat type  Different manufactures use different terminal designations for energizing a certain relay or such.  However orange mostly goes to the o/b term. on stat for energizing the rvs.vlv. out at the od. unit, and does not need to connect to th ahu. at all because of no electrical reason for it to do so.  on the other end of the spectrum Orange has been used for a common ive seen and in that case connects to common side of transformer and all else requiring a common 24 volt wire.

Posted on Apr 10, 2009

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert who has written 20 answers of more than 400 characters.


    An expert who has answered 20 questions.

  • Contributor
  • 41 Answers

I'm a Certified HVAC Technician and have been working in this industry since 1996. I simply went too and typed in RUUD HEAT PUMP WIRING DIAGRAM, and found the following website URL where you can view and download and print your own PDF copy:

But, for your information, in MOST cases, standard COLOR Coded WIRING for HEAT PUMP applications shows the ORANGE wire gets landed onto the "O" Terminal on the Heat Pump Thermostat, at the AIR HANDLER both ORANGE WIRES simply get twisted together and capped off with a WIRE NUT, and the ORANGE WIRE on the OUTDOOR UNIT also gets twisted together with the ORANGE WIRE coming down from the AIR HANDLER UNIT and capped off with a WIRE NUT. Therefore, O = Orange Wire = Reversing Valve. Good Luck.

Posted on Sep 20, 2012


Posted on Oct 20, 2008

You should give more data as;
Brand of the air handler, the condensor and the thermostat

Posted on Jan 16, 2008

2 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 63 Answers

SOURCE: Wiring connection for a Ruud air handler & seeking its wiring diagram.

The orange wire coming out of the outside unit is for the reversing valve( controls the heat and cool mode of the ac) If its unhooked, it will be either in the ac mode all the time or the heating mode all the time depending on the style of the reversing valve. The orange wire goes to the (O terminal) inside the outside unit.

There is also another orange wire that goes from the air handler to the thermostat. One orange for the thermostat, and another to the condenser( out side unit)

Posted on Jan 26, 2008

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Wiring diagram for capactor

Wiring diagram can be found on the inside of the service access panel on the heat pump.

May 31, 2015 | Goodman 3 Ton 14 ee Goodan Heat Pump...

1 Answer

GeoSpring GEH50DNSRSA wire diagram

Here are all the resources that are available for GE heat pump without calling GE and hearing them tell you to call service technician:
There is no wiring diagram for the bundles of wires coming from chip control board.
As general rule, these things are made to last 10 years, and afterwards will not function or be repairable. It's like a window air conditioner, except connected to water pipes, and connected to computer chip and multiple sensors, each susceptible to failure, and then the machine is used 24 hours a day, 365.
Designs have changed continually from 2009 to 2010 to 2012 models.
It's likely you got a nice piece of junk with depleted anode rod and failed sensors that stopped working and somebody got rid of it because it wasn't repairable.
Add a comment

If you need further help, I’m available over the phone at

Jun 02, 2013 | Reliance & 40 Gal Electric Mobile Home...

1 Answer

I need the schematics so i can install the thermestat

There should be a wiring diagram with the new thermostat you can follow.
If not,remove the control panel cover from the outside unit and follow the diagram printed on the inside of the cover.
If there is not a diagram there,remove the panel from the indoor unit and use the diagram printed there.

If not one there tell us what brand thermostat and what terminals are on it and we can tell you which wire goes where.

Mar 18, 2010 | Goodman CKL36AR36 Air Conditioner

1 Answer

Need wire schematics -circuit panel box & heat element ARIES SPA

Did you check inside the cover of the control box. Most spa's have a schematic of their components there. Hope it is there.

May 11, 2009 | Home

1 Answer

Dryer not heating

look inside the control panel. sometimes they put the schematics there.

there should be two wires going to the heating element.

tnx 4 using fixya.


Aug 26, 2008 | Whirlpool LER5636P Electric Dryer

1 Answer

Wiring Amana Heat pump to inside unit and 9520 robertshaw

colors can vary. you should be able to locate a wiring diagram inside the airhandler and out door unit. you will have to remove the panels. generally though Green is fan RED is power WHITE is reversing valve Blue is common YELLOW is the contactor (usually have to jump w and y terminals at robertshaw tstats. PLEASE DOUBLE CHECK AT SYSTEM DIAGRAMS!!

Apr 20, 2008 | Amana PTH123B25AJ Heat Pump Air...

5 Answers

Wiring connection for a Ruud air handler & seeking its wiring diagram.

we are trying to install a goodman heat pump with a rheem air handler, the orange wire is hook up and the unit is still staying in the heat mood. does anyone have a wiring diagram for the air handler, their is some white wires in the air handler one with a purple strip and one with a black strip we need help

Jan 05, 2008 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

6,426 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3335 Answers

Mack Baxter

Level 3 Expert

383 Answers


Level 3 Expert

82322 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides