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Im trying to wire a goodman 5 wire air handler to my 4 wire t-stat and 2 wire condenser can u help

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Remove the jumper from the t-stat between rh & rw then the stat will be 5 wire

Posted on Apr 04, 2011

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1 Answer

Air handler to condenser wiring


only 2 wires go from air-handler to condensing unit on standard a/c systems unless you have heat pump system.

Jan 19, 2014 | Goodman Heating & Cooling

1 Answer

How to wire condenser and air handler to the t-stat


Assuming this is a standard unit the thermostat connections you will use: Y, R, G, W and possibly C.

Run two conductor thermostat wire to the condenser. The condenser will have two wires to connect. Connect the two conductors to the condenser wires and run them in to the air handler.

At the air handler, connect the two condenser wires to: Y (yellow) and C

Run 4 or 5 conductor thermostat wire from the air handler to the thermostat. At the thermostat, connect the yellow wire to Y, the white wire to W, the green wire to g, and the red wire to r.

At the air handler, connect the thermostat wires: White to w1, yellow to Y, green to G, and red to R

*Y will now be connected to the thermostat and the condenser
*If you have 5 conductor wire to the thermostat, connect the last wire (which is probably blue) to C
At the air handler, connect the last wire (blue) to C. This will enable you to have 24 volts at the thermostat in case the thermostat actually requires 24 volts to operate it.

R=hot
G=fan
Y=cool
W=heat

May 19, 2011 | Heating & Cooling

1 Answer

My goodman air handle is run on e-heat only and will not turn off ,also the outside unit will not turn on , I put a new themostat this didn't help I have a goodman heatpump


Heat-Pumps can be temper mental. Sounds to me like your air handler is running on emergency heat, due to a problem with the condensing unit.You have heat strips in the air handler in case the outdoor temp. gets to cold and the heat pump cant keep you're home warm.Also, if you loose a compressor, it will go into emergency heat. If you have lost the compressor for one reason or another, lets say a locked rotor, the compressor would draw L.R.A. (Locked rotor amps) and cause the circuit breaker to trip. Check this.As for the air handler running all the time, you said you replaced the stat? When you removed the control wiring from the stat, did the fan shut off? I wish I were on site to help you, but all I can do is offer you some advice. With the power off to the air handler, go to the stat and remove the red and green wires. Turn power back on and see if it stops running. If it stops, then it sounds like the new stat is also faulty? If it continues to run, check the wiring in the air handler to make sure the red and green are not touching somewhere, and also check the control wiring on the outdoor unit for the same problem. Do you have any dogs that may have chewed into wiring? If so, check all outdoor t-stat wiring. There are so many things it could be and I hope very much I have helped you with solving this online, which can be difficult. You may also have a faulty defrost board. Try to do what I have asked of you.
Good Luck, Sincerely, shastalaker7

Oct 16, 2009 | Goodman GMS90703BXA Heater

2 Answers

Problems with low voltage control wiring turning on cond. unit


Only 2 wires going outside.
Yellow from the thermostat and the common wire from the lv side of the transformer.

Apr 28, 2009 | Heating & Cooling

1 Answer

The air handler won't shut off


As long as the t-stat fan switch is in the auto position the problem sounds like fan relay is stuck. It looks like a little black box about 2 inches square. Has 5 positions on it two of them are for 24 volts.
Be sure you turn off power before pulling it out. Make note of the arrangement of the wires maybe label as you remove them. ken

Dec 26, 2008 | Goodman CKL36AR36 Air Conditioner

1 Answer

Wiring diagam for goodman heatpump and air handler to thermostate


On your t-stat you have Y, W1, W2, R, O, G, B or C or X. Y is your cooling circuit and will be the same in the air handler and heat pump unit, use the yellow wire for this circuit. W1 and W2 are your back up elec. or gas heat. Depending on how many kws or heat strips you have and t-stat wires you will put the white wire to W1 in both the t-stat and air handler. W2 is for your second stage back up heat if air handler calls for it, this will be a tan or brown or black t-stat wire and goes to W2 on t-stat and air handler. R is half of your 24v control power from the transformer and is the red wire and goes to the t-stat, air handler, and heat pump. O is for the reversing valve in the heat pump that switches it from heating and cooling. You guessed it the orange wire connect to t-stat and heat pump. G is for the blower and is the green wire to the t-stat and air handler. B or C or X is known as the common which is the other half of control circuit from 24v transform it is the blue wire and goes to the t-stat, air handler, and heat pump.





Oct 09, 2008 | Goodman Heating & Cooling

1 Answer

Need line set size for goodman ck-36-1a


If your running gas heat it's 5/8 3/8 tubing.If it's elec. heat it's 3/4 3/8 tubing. Etheirway 3/4 3/8 works for both. Use 6 wire for tstat from tstat to furnace or air handler, and you need is 2 wire from condensing unit [outside] to furnace or air handler or anything more than two.

Sep 26, 2008 | Goodman Heating & Cooling

1 Answer

Thermostats being replaced often


I have repaired A/C commercial and in dustrial for 40+ years. ( ot of ten times replacing one item as a t-stat 5 times pretty much proves it is not the thermostat. The VA rating on your transformer has to ne able to carry the total load of your circritry.

Yes, I have als seen cases wher a intermitent short occurs in the thermostat cable that has up to 6 different wires in it.

Also "Heat anticipators" in all t-stats (Unless they are automatically controlled) need to be set properly.

You need a AMP reading meter with a Volatage and Resdistence Meter.

I suggest calling a professional. ONE WHO IS LICENSED TO WORK ON THE MODEL OF AIR HANDLER AND CONDENSER YOU HAVE. THE T-STAT MUST BE WIRED CORRECTLY TO THAT SYSTEM. TRANE, CARRIER, RUUD, GOODMAN, ALL ARE DIFFERENT IN COLOR CODES FOR WIRING.

I had one job wher a painter had nailed through the t-stat wire inside the wall and caused a short between the Red (Hot wire) and the ground wire ( in this case it was the blue wire) Depending on the t-stat ... There ar up to eight terminals that need to be i9dentified and then properly wired.

Heat pumps use at least 5-6.

5 t-stats failing is gettin close to $500 of repairs if not more.

Feb 06, 2008 | Ruud UBHC Air Conditioner

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