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Rewire air conditioner controls

Need to see how to wire air conditioner and thermostat controls air conditioner repair man took unit apart to find out problem left it in pieces need to rewire

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  • Ken Bledsoe May 11, 2010

    Can you take a digital picture of it and then email it to me? A few pictures would be okay. The re-wiring is very dangerous to do if get one wire wrong.

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Assuming "Window Unit" with rotary switch.
L1 (smooth part of line cord) to thermostat 1, thermostat 2 to overload (black disk) from overload to Common( C) terminal on compressor.
From Run (R) terminal on Compressor to Common (C) terminal on dual capacitor. From Start (S) terminal on Compressor to "Herm" terminal on capacitor. From fan motor to # 4 on switch = Medium Speed, to # 6 on switch = High Speed, from fan motor to # 7 on switch - Low Speed. Brown wire from fan motor to (F) on dual capacitor, white wire from fan to (C) on capacitor and L2 (ribbedwire) (N) to (C) on capacitor

Posted on May 10, 2009

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Posted on Jan 02, 2017

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2 Answers

It won't start and displays E3 fault code. Manual says this is faulty coils? Took apart and cleaned all, looks good. Still has code displayed and won't run. How to clear fault code? Thank You.Jeff


E3 means "unit-abnormal protection to avoid occurence of unit damage."

Manufactures does not recommend that a homeowner try to attempt a repair on a code like this as it indicates possible wiring or internal problems. Have you checked for an internal fuse on the circuit board? I would also check the incoming power to make sure you have the proper voltage. You can also try unplugging the unit, waiting 30 seconds and plug back in to see if the code disappears.
According to A/A brands, if this code appears, shut off device and call authorized service company. I'm just trying to get you some things you can check yourself prior to doing that.

Hope this helps.

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The unit will not produce cold air. It only pushes out room temp air. Altough I am not an expert, I think it is the compressor, or the tempature control unit (thermostat?) The unit does seem to make an...


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Sep 06, 2010 | Amcor AF9000E Portable Air Conditioner

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Modle No. pa10ja042oooacaa I need a wiring schematic for this unit . this is a split system the thermostat wires and the sequence and the relay need rewiring.


this is a 10 seer straight cool unit only 2 wires going to the unit install a new contactor and the thermostat wires go to the contactor unless u are talking about the air handler this is not the model # for the inside unit

Aug 30, 2010 | Heating & Cooling

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It will not blow air out of the vents, the unit turns but does no


We have nothing but trouble out of our unit HR36C1VAR since we bought our house. Now the heating man is saying we need the wiring diagram so he can replace the wires and rewire our unit from where someone cut the wires now. Does anyone have a copy of this diagram?? ours is missing. I would so appreciate it..Dont have the money to replace unit

Jul 27, 2010 | Haier HC48C1VAR Central Air Conditioner

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My dog yanked a brown wire out of the outdoor ac unit that has the fan. how do i rewire it?


If it is the small wire, that goes to the coil on the contactor. It is a low voltage wire that comes from the thermostat. You need to disconnect power from the machine before attempting any repairs. Do not short the small wires or that could fry the transformer
On each side of the contactor is spade connections to the 24 volt coil. All machines use a magnetic contactor as a way to energize the machines parts using smaller wires coming from inside the house at the thermostat and inside blower.

Apr 19, 2010 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

My heat will not shut off i have a remote thermostat i can take thermo wires apart at ac unit and stop it


The thermostat is supposed to do the same thing you are doing when you take the thermostat wires apart at the ac unit - it's not.

I would replace the thermostat and see if that doesn't fix the problem.

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Mar 21, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Window unit no longer cooling


you could pull the front cover off and see if there is a loose wire in the control box (behind where the control knobs are). it could just be a bad thermostat. you will see a copper wire with a silverish end on it coming out of the t-stat, try holding it between your fingers for a few minutes to warm it up, turn the t-stat to coldest setting possible, turn unit on, and then see if the compressor will kick on. if neither of those things help you could try replacing the thermostat, probably not expensive from samsung if the unit isn't too old. if that doesn't help either then the compressor probably bit the dust. but if not its worth fixing! hope that helps.

Jun 15, 2009 | Frigidaire FAC107P1A Wall/Window Air...

1 Answer

Brand new goodman 2 and half ton package unit runing all the time


Sounds like the Thermostat or board is wired incorrectly(being new)
have the installer come back and rewire it.

Please rate this solution.

Jan 16, 2009 | Goodman CKL49AR49 Air Conditioner

2 Answers

No heat


Hello , I think I can help , all you really can do is order a new control board and install it unless you want to keep rewiring it from heat to cool. They are fairly easy to install , you can order it on line with the model number off the unit spec sticker/tag. Hope that helps , good luck

Dec 21, 2008 | Intertherm P3RA-048K Air Conditioner

2 Answers

Air Conditioner malfunction


Hi, Sounds like you have a short in the control circuit to me. Turn off all power going to the unit. Write down or otherwise mark the wires leaving the control board going to the thermostat. Remove them from the control board. Replace the fuse. Turn power back on and see if the fan still runs. If it does, check and or replace the heat limit switch that brings the fan on during the heat cycle. It may just need adjusted. If the fuse blows, I would think that the control board is probably bad. If it doesn't blow, Remove the thermostat. Leaving all thermostat wires open check them with an Ohm meter. There should be no continuity between them. Twist all the wires together at one end and ohm them again at the other end. You should have complete continuity on all wires. If the wiring checks out, down power the unit. Double check your wire colors and rewire the control board. With all wires open at the thermostat, turn the power back on. Touch the RED wire to the YELLOW wire. The Condensing unit should come on. Touch the RED wire to the GREEN wire. The fan should come on. Touch the RED wire to the WHITE wire. The heat should come on. Down power the unit. Replace the thermostat. Test unit. If the fuse has lasted ok but blows now it is either wired wrong at the Thermostat or the thermostat is bad. I hope I have helped. NOTE: If you can not understand these instructions. Call a licensed Heating / Air conditioning company. kstfas

Sep 23, 2007 | Heating & Cooling

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