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I HAVE A GOODMAN GSC130241AE UNIT AND IT WON'T BOLW ANY AIR OR HEAT I'VE REPLACED THE 24V TRANSFORMER AND THE THERMOSTAT BUT THE FURNACE OR THE AC UNIT WON'T COME ON

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Have you checked the contactor?

Posted on May 04, 2010

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I am wiring a Honeywell wifi unit and I used a separate 24v transformer and connected to the c and rc terminal. My system is ac and heat and uses both and rc and rh wire. I wired the rc to the r ter


A thermostat is a switch. It connects 24vac from one terminal to another depending on the request. The 24vac comes from a transformer, usually located in the furnace and connects to the R terminal. Since you are using RH and RC without a jumper between it means there are two transformers, one in the furnace for heating (RH) and one in the air conditioner condenser used for cooling (RC).
Your old thermostat was probably mechanical and did not have a C (24vac common) terminal. Your new thermostat requires power to operate therefore needs a wire connected to a C terminal. I would get rid of the transformer you added and look for an unused wire in the bunch at the thermostat. If it's there connect it to C on the thermostat and to C on the furnace. Remove any jumper from R to RC or from RH to RC depending on your thermostat and connect wires same as the old thermostat.

Jul 04, 2014 | Heating & Cooling

1 Answer

Goodman aepf426016aa


Make sure you have power to furnace and 24v to thermostat

Nov 29, 2013 | Goodman Heating & Cooling

1 Answer

Wiring diagram for Thermoking V700MAX


Red or R is the "Hot leg" of the Transformers 24volt supply,
Common or C is the "Neutral leg" of the Transformers 24 volt supply;
and the side of power to which ALL the 24 volt control circuits
terminate to complete the circuit, example; Heat=W, Cool=Y, Fan=G.
Upon a call for heat a switch closes betwen the Red and White Thermostat terminals.
The stat sends the 24 volts to White or W for the heat circuit on W on the
furnaces LVTB low voltage terminal board.
Yellow or Y goes from Thermostat to furnace Y on LVTB, which is simply
a connecting point on its way to the AC units 24v contactor coil located outdoors.
It actually isnt even attached to the furnace many times as it serves no purpose there and simply
continues to the AC unit with the copper lineset that the AC unit feeds.
The remaing 24 volt Thermostat wire goes back to common on transformer to complete the Yellow
24 volt control circuit.
Green or G exits the Thermostat and connects to G on LVTB for the fan relays 24volt coil
and returns to Common to complete the Green 24 volt control circuit.
O is for a Heat pump reversing valves 24 volt solenoid, and return to Common as all 24v circuits must to terminate or complete the circuit.
Some parasitic type Termostats need the 24v power to run, some are battery, some are both.

Nov 01, 2010 | Heating & Cooling

2 Answers

I have an goodman model # gsc130241ae ac unit outside it will not come on, no hum, fan doesn't run thermostat control is good swaped out with downstairs unit. Gas heat unit is in the attic, I don't use...


Does the blower indoors run and move air? if not it would mean that you don't have power to the furnace.
The 24 volt transformer in the furnace is used to power the thermostat and the control circuit on the A/C unit outdoors. Or you could have blown a fuse on the computer board in the furnace.
If this has helped please rate me, and If you need more help, give me some more info.
Thanks,
Paul

Apr 02, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

I have an goodman model gsc130241ae unit will not


Hello Does the thermostat have a display?Check emergency wall switch and curcit breaker all on.Fan on should at least run if power.

Mar 31, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

My out side unit will not come on i have checked thermoastate wires capacitor and voltage and freon ,, points are not pulling in its a yr old split air from goodman


You should have 24v ac at the coil to the contactor (points) as you call them. The 24v comes from the indoor unit through the thermostat. If you manually push in the contactor does the unit run. If so, then the problem lies in the low voltage circuit somewhere.
If the indoor blower comes on when you switch the thermostat to fan them you have low vaoltage and the transformer is okay if not then change the transformer or fuse. if you have low voltage then you need to be checking for a broken wire of a bad thermostat on the cooling side. depending on your thermostat a relay can go bad in it the runs the cooling.

Nov 12, 2009 | Goodman CLQ36AR49 Air Conditioner

3 Answers

I have a goodman furnace and ac unit the fan and heat work but every time i turn the ac on it blows the low voltage fuse ive replaced all low voltage wires to outside unit and thermostat i also replaced...


Look at the contactor on the condensing unit, remove the low voltage wires to the contactor and turn on the system. If the low voltage fuse doesn't blow, replace the contactor.

Jun 24, 2009 | Goodman CLQ36AR49 Air Conditioner

1 Answer

No air conditioning unit inop


you lost your 24v check the transformer at the furnace at R and C treminals see if you have 24v if not your transformer is gone but you also have to have the door switch on the blower section closed and check incoming power as well

Aug 17, 2008 | Carrier 38BRC048 Air Conditioner

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Goodman Furnace/AC unit not working 3a fuse blows even after replacement. once thermostat is turned on and clicks to start ac unit the fuse blows


3 amp is standard.the fuse is blowing to protect the transformer.It is telling you that there is a short in the low voltage wiring.Goodman also had an issue with the coil shorting on the contactor.To prevent damage.....i'd call a pro.It should be a fairly simple repair.

Jul 03, 2008 | Goodman CLQ36AR49 Air Conditioner

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