Question about Haier hwr10xc6 Air Conditioner

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Constant extremely high-pitched screeching noise -- brand new unit.

This is not a normal compressor noise. It literally hurts your ears and is unbearable. I have never heard anything like it!

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  • Anonymous Jul 07, 2008

    i have the same problem with my fedders. it is intermittent but when it begins, i have to turn it off

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  • 330 Answers

Do you still have warranty to cover this problem?

Posted on Jul 03, 2008

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I have a new Delonghi portable AC PAC N115EC (11,500BTU), is it normal for the compressor in this particular A/C to be cycling on/off every 2 to 3 minutes?


If the room is cool, it sounds like the unit is operating correctly. It could be short cycling because the unit is over sized for the room being conditioned. if you can, increase to size of the load by opening a door into another room. As long as the refrigerant pressures equalize from high to low side internally and the compressor doesn't start up under load, you should be fine

Sep 10, 2016 | DeLonghi Heating & Cooling

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New A/C Unit makes loud noise when it starts up


It shouldn't be too loud. You don't explain where the noise is coming from? The air handler/furnace or the outdoor unit.

Jun 13, 2013 | Heating & Cooling

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Buzzing Refrigerant Lines


Have someone check your pressures & temperatures in your refrigeration system. Also check the compressor amps with an analog meter to see if the amps fluctuating. There might be something wrong with the compressor.

Jun 12, 2012 | Bryant Heating & Cooling

1 Answer

Whynter Portable Air Conditioner Model: ARC-14S. Problem: It sounded as if something fell inside the unit while it was operating (cooling) then it started to vibrate horribly. The vibration is only...


Hi,Whynter Portable Air Conditioner has many moving parts, and they all make noise and cause vibrations. Some of these parts are more likely to causing shaking and loud noises, and sometimes this signals a larger problem, something to watch and scrutinize. If serious enough, it calls for a repair.

Loose Parts

Loose parts cause the majority of shaking and vibration noises in your air conditioner. A few of the most common loose parts include the air compressor, the piston rods and even the fan or blower unit itself. These noises are clunking, clanking sounds that occur along with a vibrating action. The only method of repair is a complete compressor replacement, which is a repair only a certified air conditioner technician is qualified to make. The compressor is a fully sealed component, so individual parts in the compressor cannot be repaired.

Fan Blades

Fan blades cause noise, shaking and vibrations even when properly secured. If fan blades contact the exterior structure of the air conditioner due to a bent fan blade or broken and misaligned grate, a constant, repetitive noise and vibration results, which sounds like a ticking or banging from the interior of the air conditioner. Vibration in this case is limited but still present.

Mounting Brackets

When an air conditioner shakes, there is a problem with the mounting brackets. These brackets hold the air conditioner compressor steady as it operates. Normal vibrations and shaking would otherwise occur without these brackets. A loose mounting bracket causes the air conditioner to rock back and forth and creates a clanking sound. As the compressor starts up, this rocking and clanking sound begins, resulting in a very loud and fast vibration and noise. It also occurs when the unit shuts down.

Other Sounds and Vibrations

Sometimes air conditioners squeal, hiss, hum or screech. Each noise is often accompanied by a vibration. Humming sounds along with a vibration may indicate a bad capacitor, the electrical part responsible for starting the machine. Hissing sounds tend to indicate a pressure problem while screeching and squealing sounds are fairly common in window air conditioners and in central air conditioners. This sound is also a result of the compressor motor. It usually starts when the unit turns on and continues through its normal operating cycle. Vibrations always occur in the air conditioner due to moving parts and the compressor motor's operation.


Hope it helped..

Aug 18, 2011 | Whynter Portable Air Conditioner

1 Answer

3 year-old Goodman compressor/heat pump terribly loud @ start


I don't think this problem (btw I agree 'from a far distance' with the Hvac guy) is inherant to Goodman, after all the compressor (that is in the unit) is one that if found in other brands too.

Of course the compressor is under warranty so there's no charge for it - but - $800 to change out the compressor (and that's the proper fix) is a 'bit' high - you possibly could save a few bucks by getting some other estimates.

good luck!

May 09, 2010 | Goodman CKL60AR60 Air Conditioner

1 Answer

Outside fan does not spin and a loud screeching sound coming from


Hey there, sounds like the bearings seized in your fan motor. You need to replace the fan motor. If the compressor runs without the fan, th pressures build up and if they reach an extreme point, the compressor will bypass internally, creating a loud sound as the high pressure is released to the low pressure side. I would turn the thermostat on and stand by the outdoor unit as it start. Leave the disconnect on the wall readily available so you can quickly turn it off. If the compressor sounds ok when it starts up and runs for a couple seconds, turn it off right away and replace the fan motor and you should be good to go. If the compressor sounds bad or real noisy immediately at start up, the fan motor not working killed your compreesor. You would need a motor and compressor, might as well replace the unit at this point if you are paying to have it done. Let me know if you need anything else
seth

Jul 03, 2009 | Carrier Heating & Cooling

1 Answer

Loud screeching noise coming from the unit.


A screeching or squealing noise usually comes from the fan motor. There may be an oil port and you can buy a small telescoping oil bottle at a super hardware store or an a/c supply house. Before putting in he oil, remember to TURN OFF THE POWER TO THE UNIT and only use a light squeeze on the bottle - over oiling will cause a mess inside the motor. It may be a sealed motor and no oil ports. In either case, budget for a new motor as if it's to the squealing stage, the bearings are already damaged and it's a just matter of time before before the motor bearings fail. If possible, get oil on the bearings ASAP - and use the proper lightweight oil for made for this application.

May 05, 2009 | Amcor PLM16000 Portable Air Conditioner

1 Answer

Loud screeching sound coming from the unit


It sounds like the fan motor needs lubricating. Do you need help with this?

May 05, 2009 | Amcor A12000E Nanomax Portable Air...

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