Question about Mastercool 67680 Evaporative Cooler Air Conditioner

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Master cool when it goes on it makes a vibration sound, almost like wind blowing thru it. Seems like after awhile it isn't a constant sound, the sound then comes & goes Help

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Make sure you have enough exhaust openings in the house. Turn on the unit with an outside door open and see if the result is the same. To me it sounds as if you have too much back pressure and not enough ventilation.

Posted on May 31, 2009

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I have a MasterCool evaporative cooler on the roof of my house. Its making a loud squeaky sound when I turn it on. Maybe something is rusted because my cover blew off during a storm and I didn't...


If you were to stand at the condenser for let's say 30 minutes, would the sound be constant throughout or would it go away and come back and few times. If it goes away and come back, it may be caused by your compressor. If it's constant, it may be the condenser fan. Now, if you're convinced that both are fine, then the squealing is probably caused by vibrations from the chassis. The fact the you have a makeshift cover may give you hints as to where the sound is coming from.

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High efficiency outside air conditioner does not cool house, seems to for a while but stops. The pipes at the air conditioner are coated with ice so seems to produce cold but does not blow that through the...


Unfortunately, the ice coating isn't normal, in fact, it is an indication that your unit is low on freon or a blockage. But could also mean a few other things.

But about the only thing you can do yourself is make sure that the fan is turning or not.

Jul 07, 2011 | Frigidaire Air Conditioners

1 Answer

Air conditioner isn't blowing cold! Fan works okay but air isn't cool. Can hear hissing sound that sounds like normal compressor function. Do I need a coolant recharge?


You will need the condenser coils repaired before you can charge it. These come from the factory sealed and they should not ever need a charge unless you have a leak. The hissing sound is more likely air in the system being pumped by the comressor and it is coming out a hole in the coils.

May 29, 2011 | Frigidaire FAH126N2T Thru-Wall/Window Air...

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My LG air conditioner does not blow air. The compressor starts properly (owing to the noise it makes)


There may be something in the fan or could have the bearings worn in the motor. If you're careful you can turn the unit to the off position, take the plastic front off, reach in thru where the air blows out and try to give the fan blower a spin and see if it is free. If it isn't, try to find whats holding it. If it is, the bearings are worn and you'll have to have a new motor.

May 11, 2011 | LG Heat cool Window Air Conditioner

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No Cold Air


it sounds as though the compressor is stalled or seized. if its seized a new will be required! If its stalled it may be down to a failed capacitor, if you have a voltmeter test for voltage at the compressor.

When shutting off leave it off for a good 24 hrs

All the best

Jul 05, 2010 | Danby DAC5071M Thru-Wall/Window Air...

1 Answer

My Home Ac Unit Is Not Blowing Any Air


This sounds like the fan not turning during cool. You will have to check the fan relay for power during the cool cycle. The fan relay is run by the low voltage side, but still there is hi voltage present. When in heat the power goes thru the relay on one set of points then in cool goes thru the opposite side. You should have a digram present, and then on the main circuit board there is a code light. Check the light for blinking or (flash) read the bottom of the board for the code ( very small print)

May 17, 2010 | Goodman CKL24AR24 Air Conditioner

3 Answers

Compressor makes noise and goes on and off constantly


That foam block is an anti vibration dampening device. My guess is is goes up against the underneith od that compressor. The real problem is with the short cycling compressor. I would return that piece of junk.

Jun 30, 2009 | Air Conditioners

1 Answer

Not cooling just feels like the fan is on.


HEY, sounds like it time for a full clean-up. Take the cover off and clean the drain ports, the filter in the front of the unit, the back inside coils, oil the fan motor, wash the front coils, ,, The water blowing out could be because its not leanning back enough, & the coils or filter is plugged and trying to **** air anywhere it can ,even thru the drainnage system! Thank-you-very-much!

Aug 30, 2008 | Haier hwr10xc6 Air Conditioner

1 Answer

Mastercool air conditioner


If it is indeed a true vibration, it could be a number of things. I have seen bad bearings do this off and on as the cooler runs. Could be something going wrong with the blower motor. There are several things that need to be checked to properly evaluate the problem you are describing.

Aug 29, 2008 | Mastercool 67680 Evaporative Cooler Air...

1 Answer

Haier ESA 3185 AC won't cool; makes escalating loud vibrating noise near front panel/ filter


Have someone check the run capacitor of this unit. If the run capacitor is bad over shorted it can cause the unit to run and short cycle on a current overdraw. This makes for an electrical imbalance in the compressor motor. Next step is the compressor is faulty.

May 16, 2008 | Haier ESA3245 Thru-Wall/Window Air...

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