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Humming sound coming from compressor on goodman heatpump but the unit works fine

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A humming sound is not unusual for any a/c compressor. In some cases the humming is nothing more than a loose exterior housing. If it works fine don't worry about the noise.

Posted on Oct 04, 2010

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I have a goodman gsc13 ac unit about 4 year old. When the temp gets around 90 or above outside the fan on the unit starts but the compressor does not. I had service check it out but that day they were...


It sounds like the unit may be over charged. Make sure the outside coils are clean and you have plenty of airflow coming out of the top of the outside unit. What could be happening is, when the temps get higher outside, so do the pressures in the system. The compressor has a thermal overload protection that will kick the compressor off if it gets to hot, which if the compressor is over charged, it will work twice as hard, over heat and shut off. You would need a technician to come out and get the refrigerant charge back to normal. Another thing that could be happening is a weak or faulty capacitor, which is a small round or oval metal object, found in the electrical compartment on the unit. This are fairly simple to change out if your comfortable with electric. I've also had to put what's called a hard start kit on compressors with the same problem, new and old. The hard start basically gives it that extra boost of power to get it up and going. I would start with the refrigerant charge and go from there. The electrical "humming" sound that you hear unless you turn the breaker to the furnace off, is the contactor on the outside unit having a call for cooling. The 24 volts come from the furnace, to the outside unit, and pulls the contactor in to power the unit with the 220 volts supplied. It is normal and you don't have to worry about that at all. I hope some of this helps and good luck!

Jul 05, 2011 | Heating & Cooling

1 Answer

My Amana heat pump model PTH153B50AJ does not cool properly. The compressor comes on and the fan works.


This sounds like a freon problem your system probably has a leak in the system somewhere. Amana has tons of problems with there equipment. They make there coils paper thin and they split especially on a heatpump. Amana used to be a good brand and then got bought out by goodman manufacturing and have turned there product into ****. How old is this unit?

Jun 14, 2011 | Amana PTH153B50AJ Heat Pump Air...

1 Answer

3 ton heatpump package unit kicks 100 amp breaker compressor hums and condesor fan doesnt turn


compressor is locked up! check the start relay and the fan motor to see if the shaft wobbles up and down if it don;t! then replace the compressor

Jan 21, 2010 | Heating & Cooling

1 Answer

When the heatpump is on the condencer fan comes on. this a goodman package unit


yES, THATS TRUE,ALSO THE COMPRESSOR TOO. TO REMOVE HEAT OUT THE OUTSIDE AIR DOWN TO 40* THEN THE BACKUP HEAT SHOULD KICK IN OR ITS CALLED THE EMERGENCYHEAT.

Dec 02, 2009 | Heating & Cooling

1 Answer

Goodman Air handler blowing fuse if switch outside unit not runni


Sounds like your compressor in your heat pump is siezed . You can try a "Hard Start" Capacitor...which basically gives your compressor a kickstart and works 95% of the time when compressors get older....It's hooked up in parallel with the existing Capacitor...if you're not familiar with Electrical etc I would call an expert and mention what I said . If this doesn't work you will likely need a new Compressor/Unit . You could also have a short to ground in the heat pump side....likely the compressor is the problem however the original Capacitor could also be the problem

Oct 27, 2009 | Heating & Cooling

1 Answer

Heat pump not running


check your house circuit breakers first that should be labeled heatpump or outdoor unit
make sure it is on and or not tripped
then if you have a box outside near the outdoor unit open it up and see if there is a breaker or maybe fuses that could be blown

May 26, 2009 | Goodman CPLE24-1 Air Conditioner

1 Answer

A/c compressor hums


The compressor may be fine after setting off or a day. After retyring it then if it still dosnt start either replace the run capacitor to the compressor and fan motor or have it checked to see if it is in range.

The hum your hearing could that be the contactor relay humming?

May 15, 2009 | Goodman CKL60AR60 Air Conditioner

2 Answers

Heatpump A/C not working


First,Turn on the heat cycle (Not Emergency)and see if the outside unit come on,If not,and you don't have low voltage outside,Go to the inside unit and test the transformer,If you have low voltage from the transformer but not outside,It is the low voltage wires,If you don't have low voltage from the transformer,It's the transformer.If you have low voltage outside when in heat mode,but the unit won't come on,It's the contactor.Let me know if you need more help.


Please take time to rate this fixya

May 13, 2009 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Compressor noise


I the compressor is bad it will draw high amps. If the amps are ok then i would look at the valve.

Jan 18, 2009 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Goodman heatpump. Crazy pressure in heat mode


Check the TXV valve on the outdoor unit, it could be stuck closed. We have been experiencing the same problems with the 410 systems and the TXV was the culprit. Good Luck

Dec 19, 2008 | Goodman CLQ36AR49 Air Conditioner

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