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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Posted on Jan 02, 2017

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1 Answer

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Check vibration eliminators on the feet of the compressors, over time of running in tough conditions they wear out and cause rattling. If this does not fix the problem see below

-check amp draw, if amp draw is high windings are wearing out and compressor is running harder, may need replaced
- check to make sure your refrigerant charge is correct you could be slugging the compressor
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My horn isn't working quite right. It only blows if you push the button in a certain place and that certain place moves around all the time. But even when it does blow, it stutters. I don't think...


if it was a fuse problem the horn wouldn`t make a noise.it sounds like the horn contacts that touch when you push on the button are not making proper contact each time.if you remove the horn button and look at the contact spots you may see the problem(uneven contact surfaces).if you move/bend the contact surfaces closer to each other of straighten this may help the problem.you may even have a horn that needs to be replaced as you said when it does work it stutters and not blow.the diaphragm in the horn can dry out and not vibrate like it should.try tapping on the horn when someone tries to blow the horn if it stops or gets louder then the diaphragm is no good.you could also check the connection at the horn itself it may have a bad connection due to corrosion and just need cleaning.

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1 Answer

Maytag MDS2351- came home one day and noticed water coming from where u get the ice and water when i opened the freezer it was not cool and everything i had in there was defrosted and then when i went to...


Your fridge operates like that: a compressor liquefies freon vapours; this creates heat so the hot liquid goes thru a cooling radiator with a fan on it (these 2 elements are at the rear bottom of the fridge) the freon fluid goes to an evaporator, turns to vapour and absorbs heat in the process, cooling the evaporator; a fan blows air over the evaporator and spreads the cooled air all over the fridge; the vapours return to the compressor.
In the rear of the fridge you should make sure that the radiator is clean and the fan working; inside the fridge you should make sure that the evaporator is not covered in ice and/or dirt and its fan is working. If necessary clean both.
If they are clean , the fans work but the evaporator isn't cold then either the freon circuit has sprung a leak and all the fluid has been lost or the compressor isn't working - to find out which just put your hands on the compressor : if it's hot and vibrates the fluid has been lost, if it doesn't vibrates then the compressor isn't working.
The compressor isn't working because either the thermostat or itself have failed. To find out which the compressor will have to be powered directly from the mains: if it starts then the thermostat must be replaced, if it doesn't the compressor will.
To fix the freon circuit or to replace the compressor a certified professional is mandatory, you must call one.

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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.

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1 Answer

Our Viking range is all of a sudden making a buzzing/humming noise. It comes and goes as the unit is on. It seems to start when it reaches a certain temp. then it stops for awhile. Do you know what it...


If it comes from the control panel, it may be a transformer for the control electronics or a relay coil. Sometimes a relay or transformer mounted on sheet steel will vibrate if a mounting screw works loose. That's easy to fix. Occasionally a coil inside the relay or transformer will develop a loose winding - the best repair for that is get a new one.

If the buzzing is specific to one (electric) burner, it could be arcing at a bad connection.

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shorted circuit usually in one of the window regulator/lift motor assemblys. remove interior door handles (or whatever is necessary) to access wiring connectors, and disconnect. insert a new fuse. shouldn't blow now. reconnect one connector at a time until the fuse blows. that is the shorted component. replace the component. occasionally where the wiring harness comes thru the frame and enters the door, the constant movement or vibration will cause the sharp edge to slice into a wire's insulation and cause a short...

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1 Answer

2006 Avalon flapping engine sound. Timing belt?


it sounds more like a loose engine or sump cover which some cars have tokeep dirt off various parts. sometime they come loose thru missing screws and the wind catches them as u go and makes them flap about, but as u go fast the wind force pins them back so they dont flap

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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.

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