Question about Haier Mechanical Air Conditioner HWF05XC7

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Loud as Hell

Just got this new ac unit. IT does this weird buzzing noise and is so loud that it repeatedly wakes me up during the night. It only does this when the ac is on, not the fan. I can't sleep with ear plugs in, so that's not an option. Can I fix this? Is this normal? I've never heard an air conditioner so loud.

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Fan moves back and forth hits back of fender

Posted on Aug 18, 2008


How do u find the "compressor and the tube discharge line"???

Posted on Jun 12, 2008

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As u said the noise comes when the unit at cool mode, it is clear that the unit makes vibration when compressor is on

I belive that the compressor is fitted with a Rotary compressor which makes more vibration then recip with a jerk.

The noise which is a hissing noise is coming from compressor and from the Tube -discharge line .

pl chk the tube are not touching anywhere, if touching pl clear it by pressing with hand slowly .
Add a weight (rubber) on the discharge to arrest vibrations

this will solve the problem of noise as the vibration.

Posted on Feb 01, 2008

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Is it installed in a window? Check to make sure it is installed correctly. usually there is a felt or foam strip that is used to dampen vibration when you place it in the window. It also acts as seal to keep outside air and bugs out. If you place your hand at various locations on the unit does the sound go away? If it does then you know it is a vibration problem. Just add new foam or re-adjust the foam or gasketing it already has. If that doesn't work then try to locate the source of the noise. Use a mechanics stethoscope or even a cardboard tube from paper towels will work. Once you have located the source then you can tell the store what the problem is when you take it back and get a new one. Cheap air conditioners are noisy. Some more than others, it's why they are cheap. But your problem does sound like it could be a product issue.

Posted on Sep 25, 2007

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Weird Noise

The weird noise will be something mechanical.

It will be either -
The Compressor (black "motor" at the rear)
The Control solenoid - Small electrical block with several pipes going through it
The frost-free fan - back of Freezer unit.

If it is the fan, it can be an easy fix if it is knocking something - just remove cover panel.

If it is the solenoid, it may require a rectifer component to prevent buzzing.

If it is the compressor, turn off unit, give it a reasonable knock to wobble it, waitm then re-connect. Sometimes the internal assembly sits in the wrong position.
If it is the compressor that is buzzing, it needs a new run capacitor fitting. If you are competent at soldering, it is possible to identify and replace this part yourself.

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Check all your wires and make sure that none of the wires that are powering any equipment (including extension cords, power bars, and power cables on the unit itself) are running parallel to any of the audio cables going to your speakers or from your inputs to your unit. This could be what's called AC hum, which is caused when the electrical current causes interference that gets picked up by the audio cables and amplified by your system. Just make sure you move the power cords as far away as possible from the audio cables.

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