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We salvaged a Goodman outside unit HDP24-1B and an inside WM25CR from one of our renovation projects. These were the best looking units from about 10 total in a Church we converted to daycare. The HVAC subcontractor tried to install the unit in our guest house and is having trouble due to no wiring diagram. He said if I find diagram he can hook up. All is done now except running wires from the inside unit to the outside unit. Can you help? After all this I hate to throw units away. Thought we could get a few years use. The outside unit has a L2, L1, COMP, RV, and 0something (can't read it) to hook up to. We assume the L2, and L1 are the hot legs from breaker. The inside unit has a 3-wire cord coming out of it with a green/yellow, blue, and brown wire that is cut. I assumed this went to outside unit. The small diagram on back of face shows a wiring diagram of 5 wires that go from the inside unit to the outside. It matches what appears to be where we tie into on the inside unit. Those wires from left to right are labeled 4WV, OF, COMP, N, and a symbol that has a yellow/green wire on the top. Thanks, Bill

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  • boliver35 Jan 10, 2011


    Thanks for the comment and the Goodman site. I've just sent them an inquiry.

    We thought the tech that was sent out could get it but since the units are fairly old they have stumped him. We are 50 miles out of City limits so I'll try to get wire diagram for outside unit and go from there. Thanks



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I have watched this question site here for days and as far as I can tell you have not received an answer to it...

The problem is that the scope of this question is way beyond what can be effectively communicated...with out the proper wiring diagrams ... these do not seem to be available on the net so I think that you would be better off to contact Goodman directly and get the wiring diagrams sent to you.... or hire an experienced A/C tech. to do the work for you...

If I was there hands on I would wire that in a day for you... but to do it over the net with your hands would be foolish and dangerous...not to mention extremely time consuming...and frustrating so both you and me...been there done that!!! :-)

Click here

They can help you with that the best...


Posted on Jan 08, 2011


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