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Message
AC question.
Posted on 6/15/16 at 7:25 pm
Posted on 6/15/16 at 7:25 pm
The thermostat is set at 75 degrees and on auto. It says the temperature is 79, but it doesn't feel warm at all in the house. A separate thermometer that I put in a guest bedroom is reading around 75 degrees. The vents are blowing cold air and the unit outside is expelling warm air. There has never been an issue with the unit having trouble keeping up before and the house and unit are five years old. Any ideas on what the issue could be and why the unit is continuously running?
6
Posted on 6/15/16 at 7:33 pm to Spasweezy
Try turning it to 80, if it shuts off I'd think the thermostat was working.
Posted on 6/15/16 at 7:37 pm to Spasweezy
Time for a new thermostat
Posted on 6/15/16 at 7:37 pm to QuietTiger
It definitely shut off about 20 seconds after I turned the temp up to 80.
Posted on 6/15/16 at 7:37 pm to Spasweezy
Measure the temp at one of the vents.
Now measure the temp at the return duct.
Should be a difference of about 18 or so degrees.
Now measure the temp at the return duct.
Should be a difference of about 18 or so degrees.
Posted on 6/15/16 at 7:44 pm to Spasweezy
My thermostat is directly above the air return (where all the warm air is being sucked back into the system) so it always reads hotter than it feels in the house. For what that's worth.
Posted on 6/15/16 at 7:48 pm to East Coast Band
There's about a 10 or 11 degree difference. Air blowing out the vent is around 66 degrees. Air being pulled into the return is about 76-77 ish. The thermostat is located in a hallway about 4 feet below the return.
Posted on 6/15/16 at 7:51 pm to East Coast Band
I'm thinking it may need a few pounds of refrigerant maybe?
Posted on 6/15/16 at 7:52 pm to Spasweezy
quote:
There's about a 10 or 11 degree difference. Air blowing out the vent is around 66 degrees. Air being pulled into the return is about 76-77 ish. The thermostat is located in a hallway about 4 feet below the return.
Seems you're in a good range to me. No a/c guy though.
Posted on 6/15/16 at 7:55 pm to QuietTiger
I put a call into mine. He should be here tomorrow, but I wanted to give him as much info as I could in regard to the issue at hand. Thanks for the help!
Posted on 6/15/16 at 7:55 pm to Spasweezy
quote:
It says the temperature is 79,
if you set it at 75 and its 79 in the machine/room, then its going to run all the time.
your machine's measurement of the air temp is the issue.
I would set it to 80 and see what happens before I call the warranty to ask about it. You may be able to get it to go off by setting the setting to 80.
otherwise its reading the temp wrong.
experiment.
if its always 4 degrees off, you can use it. just set the temp so you control it.
Posted on 6/15/16 at 7:58 pm to CelticDog
Im trying that now. Thank you. The wife said it definitely did not turn off at all today, but felt cool all day.
Posted on 6/15/16 at 7:59 pm to Anonymous95
quote:
My thermostat is directly above the air return
That's where it's supposed (required) to be.
Posted on 6/15/16 at 8:00 pm to Spasweezy
quote:
There's about a 10 or 11 degree difference. Air blowing out the vent is around 66 degrees. Air being pulled into the return is about 76-77 ish.
To me that seems too low for that new of a unit.
Posted on 6/15/16 at 8:01 pm to Spasweezy
quote:
but I wanted to give him as much info as I could
Good man and good luck.
Posted on 6/15/16 at 8:05 pm to Spasweezy
Air coming out of the supply grille ideally should be close to 55 degrees. Something is wrong.
Posted on 6/15/16 at 8:12 pm to doubleb
quote:
55 degrees.
Really? What's going in the return air, 65?
Posted on 6/15/16 at 8:13 pm to QuietTiger
Should be around 18 degree differential
Posted on 6/15/16 at 8:19 pm to doubleb
quote:
18 degree differential
Well, that's the first ever turnaround that wide that I have ever seen.
Good luck with it.
Posted on 6/15/16 at 10:30 pm to QuietTiger
Differential from air going into return and coming out into plenum should be about 18 degrees. Ideally, air in plenum coming off evaporator should be around 58 degrees meaning air going into return duct around 76 degrees. These conditions are for normal operating systems.
Does sound like thermostat is part of the original problem.
Does sound like thermostat is part of the original problem.
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