Question about Goodman CLQ36AR49 Air Conditioner

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AC Breaker trips and AC Fan turns slow.

I have goodman AC unit that the voltage measures 240V AC at sub panel breaker and contactor. Which is weird to me since this is three phase service Should be 208 across the two legs I thought. Unit is standard single phase operating on 208V from two legs of three phase service best I can tell.
I have replaced the main sub-panel supply breaker to this circuit 80 amp with a new one (not the main service breaker) and checked all connections in the main & sub electrical panel. I have also switched out the 60 amp sub panel breaker with another one (used) and get the same results When I turn on the AC fan only It hums and voltage is 57 volts on each leg to supply side of contactor. Spinning squirrel cage fan by hand it starts and runs slow. If I try and turn on the AC compressor the sub panel breaker trips immediately.
Power company says supply power is OK to building.
I am thinking of getting a 240 dummy load of some type and going to main panels sub panel supply breaker (80 amp new replacement) to connect it to test electric to that point and if it tests ok, then move to sub panel breaker 60 amp 100 ft away and do same test again and then outside to unit and repeat until I can find what section of wiring the bad connection is in . Does this sound proper?
Building is metal and really hot in attic and I am trying to avoid working in 135 deg heat unless I have to. IDEAs? Any ideas for a dummy load?
offgridman at

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Sounds like you have a bad capacitor for your squirrel cage fan , now as for the a/c unit sounds like you have a direct short in compressor to ground or leg to leg , check all wiring to make sure that it is not grounding out or melted together.

Posted on Jul 23, 2009


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Related Questions:

1 Answer


check outside breaker see if it tripped. thermostat, low voltage wire going to outside unit or contactor on outside unit bad.

Jul 06, 2013 | Goodman CPLE24-1 Air Conditioner

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Outside unit not line voltage....have 24v to contactor....have 240v leaving breaker box...inside unit runs. no voltage at breaker at outside unit. What could cause this?

For the system to work, there must be 240 vac present on one side of the contactor.The thermostat sends a 24 vac signal to the contactor causing it to close, and sending the 240 vac to the compressor and condenser fan. I would locate the source of power to the outdoor breaker and make sure that there are not loose or broken wires. Please note that the outside unit will probably have a power source that is separate from the indoor portion. Hope this helps. Dano

Aug 31, 2011 | Heating & Cooling

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Model # ckl49-il serial # 0506126514. This unit stopped working yesterday, noticed the fan on the outside compressor wan't turning, how do i test the capacitor and fan to see which one to replace?

By far the most common problem with air conditions is the relay (known as a "contactor") by the air conditioner industry. This allows a low voltage (24 volts) electromagnet to turn on the 220 volt motor for fan and compressor. A replacement will generally cost about 50 to 75 dollars on

Look for the wires entering the unit, The pair of wires entering the unit will go into a small (4" x 2" x 2") unit (the contactor). Another pair small diameter wires will go into the contactor (those are from the thermostat (or control panel of your furnace blower) and control the electromagnet switch.

The pair of output wires exit the unit and go to the compressor motor and fan.

You can check the output power by
1) Turning off the circuit breaker to the A/C
2) Unplugging the switch (must be a second switch within 3 feet of the A/C) near the house
3) opening up the outside panel on the A/C
4) Set voltage meter probes on the two output wires on the Contactor (make sure voltage meter is set to 220 volt AC range or higher)
5) turn on the outdoor switch
6) turn on the circuit breaker (if no body is near the unit and you can see the voltage meter without touching it)
7 check voltage meter to see that is says 220 volts AC

If not, then the contactor is bad and needs to be replaced.

A professional can usually do it for $200 including service call. I highly recommend calling a professional if you feel uncomfortable in any way about working with 220 volt systems. This voltage will kill you if you make a mistake!


May 28, 2011 | Goodman CKL49AR49 Air Conditioner

2 Answers


Have you checked the capacitor on the unit. You will need a capacitor meter in or to check it. nI would check it first then the board. You check the board by running the one lead to the fan terminal and the other lead to the common and see if you have voltage. If you do not have voltage then the board is bad.

Mar 06, 2011 | Amana Heating & Cooling

1 Answer

Ac on blowing out room temp air

First you should check your air filters and clean or replace if dirty. Next check the outside unit and make sure the fan and compressor are running. If they are not then make sure the circuit breaker isn't tripped or the fuses aren't blown. The circuit breaker or fuses should be located close to the outside unit. If you have power to the unit there should be an access cover you can remove to see the contactor. With the thermostat set to make the a/c run look at the contactor and see if it is pulled in. If it is then check the capacitor(s) for the fan and compressor. Let me know what you find and I can give you some more advice.

Jul 07, 2010 | Goodman GPC1330H21A Air Conditioner

1 Answer

Air conditioner just conked out;only 3 yrs old

Is the indoor unit operating? If no turn the fan from auto to on at thermostat. If the fan comes on, that is a sign that you have 24volts
present on thermostat side.

Turn AC unit off outside,turn the thermostat as low as it will go. Open the electrical panel to the outdoor unit. There is a contactor located in the unit, push the plastic bar in the middle of contactor. If it pushes
in, you have low voltage wiring problem from the outdoor unit to the
indoor unit.

If you are skilled or know somebody that is with electrical, turn the power back on to the outdoor unit take a non conductive object and
push the contactor in, the unit may start. If it doesnt start,check the
breaker for the ac unit to make sure it is not tripped.

If the breaker is not tripped and the condensor fan comes on and the
compressor does not come on and the breaker does not trip, then it
is very possible that you will need a new capacitor and while you are
at it put in a hard start kit.

This unit according to you, still should have 2 years left on the compressor warranty.

Jun 18, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Ac unit breaker trips off

First thing to do turn off the breaker in the electrical panel, then open up the AC outdoor unit, including the disconnect box, that should be mounted on the wall near the outdoor unit. Go thru and tighten all of the screws and wire nuts, look for burnt wires, while you are at it.
Turn on the breaker and try again, if it still trips, then we look deeper;
pull the control panel off the outdoor unit and look for the contactor, this is where the power coming into the outdoor unit hooks up to. There will be a set of contacts in the control, check it out and see if the points are badly burnt,
If all off the wire checking still has not helped, it will more than likely be a bad condensor fan motor or a compressor, the compressor is the big black thing in the bottom of the outdoor unit, making sure that all power is turned off, pull the plastic cover off of the side of the compressor, there will be 3 wires, make sure none of them are burnt and touching the metal, if they are, repair the wire and test.
Try this and if you need to know how to troubleshoot to see if it is the fan motor or the compressor, just contact me back.
If this has been helpful, please rate me.
Contact me if I can help you any more.

Apr 10, 2010 | Goodman CKL24AR24 Air Conditioner

2 Answers

I have a split system with a goodman CPLJ30-1b unit outside. Inside the thermostat is on, it clicks, but neither the AC, Heat or fan will come on.

Sounds like you have a high voltage problem.The disconnect or the breaker is possibly tripped.I doubt it is getting the required 240v electricity.The clicking you hear is the low voltage from the indoor unit/thermostat.

Aug 18, 2009 | Heating & Cooling

1 Answer

The circuit breaker trips every time I turn the thermostat to on. The system hasn't been on in a few months, and when I turned it on today, it wasn't pushing cold air out. I saw that the circuit breaker...

You need to start with a basic inspection in the outside unit. For the breaker to trip immediately like that indicates a dead short. With the breaker OFF look at the internal wiring between the contactor relay and the compressor. You are looking for signs that the insulation may have been chewed by a rodent, or a wire is off of a terminal and in contact where it shouldn't be. If the wiring looks good, terminals pass tug test etc. you may have a shorted capacitor. Make sure to check the wiring for the fan too. You can disconnect the com lead for the compressor and fan one at a time to isolate the defective component if needed. Work safe! turn the breaker on for the test, and off again before you put your hand or tools back in.

Jul 17, 2009 | Goodman CLQ36AR49 Air Conditioner

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