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How do i set my temperture on my air conditioner its stays at 78 and doesnt seem cool in my house

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Sounds like you could be low on charge,If you set you thermostat @ 78 degrees it should stay within 2 degrees of that and not have more then a 6-8 min cycle every 20 min.

Posted on Jul 17, 2009

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I need to know the right temperture settings cause i dont have a manual


dont try to lower cool setting below 70 degrees or heat setting above 78 degrees. all a/c's are designed for a 95 degree ambient when it gets above that you have to increase tonnage to compensate.

Jul 30, 2015 | Heating & Cooling

1 Answer

What does -AC on honeywell chronotherm III thermostat mean?


AC means "air conditioning." If the AC icon is showing on your thermostat it means that your air conditioning is activated and should come on when the temperature threshold you've set on the thermostat is reached.

For example, if you've set the temperature level to 78 degrees, when the house temperature goes above 78, usually by about two degrees, the air conditioner should cycle on to cool it back down to 78 degrees at which point it will then turn off.


This information should be in your air conditioning/heating system or thermostat owners manual. If you don't have the manual, you should contact your air conditioning dealer or your builder to secure a replacement. The manual is essential for proper operation and maintenance of your system.

May 14, 2014 | Heating & Cooling

1 Answer

My American Standard Heritage 11 unit was not working properly when i came home from work and the temperture in the house according to the thermostat show the temperture in the house to be 85 degree&#


the dual run capacitor is bad located in main panel of unit size of small red bull can it will be swelled up on top indicating it bad get on at electric motor or electric supply house most ac stores wont sell it has a rating like 35/5 370

Aug 27, 2012 | Heating & Cooling

1 Answer

Our A/c doesnot hold the tempeture set. If I set it for 78 as the day gets hotter it slowly climbs to up to 81. It will eventualy come back down to 78 after a hard day of work. If there is rainy day it...


Hi,

Here is a tip about troubleshooting your air conditioner...
There are many things that can cause your air conditioner not to cool...

AirConditioner Trouble - Review the Possibilities

heatman101

Aug 14, 2011 | Heating & Cooling

1 Answer

My in the sleeve, wall air conditioner turns on fine and the fan seems to be working but no cold air comes out even after being on for an hour and lower temperture setting.


Hi, The unit leaked all of the refrigerant out...repairs may cost more then a new one...
Here is a tip about troubleshooting your air conditioner...
There are many things that can cause your air conditioner not to cool...

AirConditioner Trouble - Review the Possibilities

heatman101

Jul 12, 2011 | Heating & Cooling

1 Answer

The temp setting shows 78 degrees,lower to 72 degrees /it stays for 15 sec and returns to 78 degrees no codes


you may not be giving the a/c enough time to cool down to 72 the reason it goes back to 78 is that is the temp in the room at that moment put on 72 and give it about 20-30 min. to see if this helps

Jul 03, 2011 | Sharp AF-S120FX Air Conditioner

1 Answer

We have a MXZ-3A30NA that does not seem to be cooling down the house. Indoor temps are reading 75 to 78 degrees and the units are set at 65. We have gone through the book and have followed the check list...


Hi!!

Check the following:

Make sure the filter and the evaporator coil are clean. Also check condenser coil in the outside unit is clean.

When unit is turned on there should be (on the led display, inside unit) one green light on for the blower and another one for the compressor, both lights should be ON untill the unit reaches the preset temp. If the light for the compressor (usually the light on the right side) does not stay ON, check the outside unit.

On the outside unit, check that when turned on, both the fan and the compressor kick in and stay running. If the fan motor stops, the compressor overheats and the thermal proteccion shuts it down to prevent damage. Also, if the R22 gas is low, the low pressure switch prevents the compressor from running.

Good Luck!!





Aug 04, 2010 | Mitsubishi Mr. Slim MXZ30TN Air...

2 Answers

AC Thermostat is set to 78 but wont cool past 79 or 80


If your unit is running 24/7 you are either low on charge or the unit is to small for your house.
A 20° temperature difference is about normal for the room air vs the air coming out of the ducts, but the room air and the leaving air should keep getting colder and colder.
An air conditioner should cycle approximately 3 maybe 4 times in an hour if it's properly sized.
As for the thermostat thermometer they are very cheap and are more for reference than actual temperature, so if 78° is not comfortable, then you should set it lower but not rely on thermostat being accurate or what the thermometer is saying as long as it is consistent.
The air conditioner and thermostat can also be set below 78°, there's a lot of people set them at 72° and below with no problems.
the only thing is if you have real low humidity you'll need to watch indoor coil or the suction line (the big line) on your outdoor unit and make sure it doesn't freeze up on you.

Sep 13, 2009 | Honeywell CT87B ROUND HEATING&COOLING...

3 Answers

Will not cool


I bought the same unit yesterday and took it back today. Not sure what's wrong, I guess they are junky a/c's.

Jun 10, 2008 | Danby Portable Air Conditioner

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