Question about Mastercool 67680 Evaporative Cooler Air Conditioner

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Temp air is not cool....water is running but it just feels like a huge ceiling fan.

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Before an evaporation cooler will feel "cool" there has to be a greater difference in the outdoor and indoor temps and/or humidity. If the humidity is high and the temp cool < 80'f The "cool" wont feel cool because there is not much evaporation taking place.

Now if the temp goes to 90 or the humidity goes down under say 40% the cooling effect "feeling cool" will change and be more like its cooling. Part because of the difference in the temperature but also because the air can hold more humidity and it is pulling moisture off your skin.

When you talk about "feel" it is rather suggestive and always different for different people.

Posted on May 05, 2009

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1 Answer

Not cooling


outside freeze sensor locking out operation

Jan 04, 2014 | Dometic Rooftop RV Air Conditioner

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I moved into a place that has a MasterCool Evaporative Cooler on the roof. The ownstairs is quite comfortable so I really only need to cool the 2nd story.... it seems as if all the cold air settles...


jbrown - Hot air rises, Cold air falls. If you have ceiling fans upstairs, turn them on to run counterclockwise at highest speed you can stand. Make sure all the windows are closed upstairs. The ceiling fans will help to keep the cool air upstairs and pull some from downstairs.

If you don't have ceiling fans, invest in a box type fan that you can place at the head of the stairs (that's the top of the stairs) run it on HIGH and it will act like an exhaust fan, by pulling cool air upstairs. It may take a while, but it will help cool the upstairs to some degree.

Hope this helped you. Please let me know. Thanks.

Jun 24, 2011 | Mastercool 67471 Evaporative Cooler Air...

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When the unit is turned on. I can hear the AC pump kick on and run. But the blower fan motor will not turn on at any fan speed. No setting on the AC will get the blower fan to turn on?


Sounds like then fan has died or the run capacitor has die. All motors that run on single phase mains need a capacitor to start them spinning. These are quite cheap & simple to replace usually - worth just replacing if you feel you can't test it. Looks a bit like a 'D' cell battery with 2 leads hanging out. Could also be that the unit is not cooling/heating and the temp sensor will not activate fan until heating/cooling coolant has passed room temp. - Rick

Jun 12, 2011 | LG Electronic Window Air Conditioner

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How to set humidistat for different seasons.


Vick, depending on the season and the humidity level in your home, is what determines the setting. For example, in the winter you want to maintain at least a 40% humidity level in your home. It will feel more comfortable, the heat will feel warmer and it will help keep static electricity at bay. In the Summer, you'll want to remove as much humidity as possible, as this will make the air feel cooler. If you have ceiling fans in you home, run them Clockwise at the highest speed you can tolerate. The more wind chill you generate, the cooler the air will feel and you won't have to set your AC at a lower temperature. Thereby, saving money. In the winter, run the ceiling fans Counterclockwise on the lowest speed. This will take the heat off the ceiling, wash the walls and bring it back down.

Clockwise and Counterclockwise are determined by looking up at the fan blades. Also, reversible ceiling fans have a switch on the side (where the pull chain is located). Generally, switch-up is Counterclockwise and switch down is Clockwise.

Hope this helps you to keep your home comfortable year round.

Apr 05, 2011 | Honeywell Air Conditioners

1 Answer

Duo Therm dripping water in camper when shut off. My Dometic Duo Therm Ducted AC drips quite a bit of water when shut off after running for several hours on hot humid days. The condensate lines are open....


Remove the filter at ceiling and run the AC on cool etc, and see if you can feel cool air leaking across to return air inlet where the divider between cold and return is. Check along all edges, etc for any cool air . Careful of wiring, but you should be able to get hand in there and feel especially around the edges where it should be sealed tight. Quite often a leak in that area causes cold air to enter return air and causes excessive condensation. Another thing to check is look way up inside opening for return air, with a flashlight and see if any dirt/dust on coils and fins of evaporator, and if so, needs to be cleaned off with a vacuum, and brush attachment. Let me know what you find.

Jul 10, 2010 | Dometic Rooftop RV Air Conditioner

2 Answers

It is freezing inside, and it is not cooling properly


Welcome to FixYa,
Check the Following
Is your filter clean? Look and the evaporator in the inside unit. Is it frosted up? Do you have condensation water in the pan? Go to the outside unit and feel the air coming out of the fan. Is it warm? Now feel the 2 copper pipes coming out of the unit. Is the small one warm or hot? Is the larger one cool ? Is there moisture on it?
Air conditioner runs but doesn't cool at all
If the airflow is good and the air coming out is not cold, your home air conditioning problem may be a temporary problem - your coils may have frozen. Turn the unit off for an hour to let them thaw, then try again. If cold air is now present, freezing coils were the problem; if the problem recurs soon after turning on, you may need to replace the coils. Again, call a pro. If you have ceiling vents in upstairs rooms and the air flowing from them is consistently warm, you probably have leaky or poorly insulated ductwork in your attic. See my Attic ceiling insulation page for more information on insulating ductwork that runs through attics.
Another likely home air conditioning problem if you have good airflow but no cooling is that thebreaker to the outside unit is shut off, which, depending on the installation, can either cause the air conditioning system to not run at all, or to appear to be running but not provide any cooling. If you can hear the compressor fan running outside, the breaker is on, but if the outside unit is silent the outside breaker may be off. If switching it on does not solve the problem, look for the high pressure cut outon the condenser and try resetting that.

Check this Link for Detailed Repair Click here

Hope you got an Idea...Thanks for Contacting FixYa...

Jun 29, 2010 | Goldstar Air Conditioners

1 Answer

My A/C (Carrier weathermaker 8000 hybrid) is not cooling properly


set the t-stat low and let it run for 5 minutes , stick a thermometer in the return air closest to the unit as possible until you get a good reading , then stick the thermometer in the cold air supply again closest to the indoor unit as possible let sit until it stops going down in temp.
this is called your temp difference and it should be atleast a 14deg. F difference from in to out. if its lower you have a refrigerant problem, Let me know how it goes.
Phil

Jun 10, 2009 | Air Conditioners

1 Answer

UNIT RUNS AN EXCESSIVE AMOUNT OF TIME AND AIR IS COOL NOT COLD COMING OUT OF VENTS CARRIER 58DLA / 58DLX CENTRAL AC FAN AND COMPRESSOR ARE OPERATING BLOWER IS WORKING UNIT IS TURNED ON TO AC TEMP SET AT 76...


DOES THE HOUSE FEEL DRIER IF IT IS 80 OUTSIDE WITH ALOT OF HUMIDITY THE UNIT WILL RUN FOR A LONG TIME TO REMOVE THE MOISTURE(HUMIDITY) OUT OF THE HOUSE BEFORE TEMP DROPS DRAMATICALLY IS THERE WATER COMING OUT OF THE DRAIN PIPE OUTSIDE

May 03, 2009 | Carrier Air Conditioners

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