Ask Experts Questions for FREE Help !
Ask
    njuhowar's Avatar
    njuhowar Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 27, 2008, 06:12 PM
    Air conditioner continues to run long hours after reaching set temp
    I just bought a brand new house with brand new American Standard air conditioner. It seems that when I try to set a lower temperature than the current temp, say, current is 78, and I set it to 76, then it started to run for somewhat long time to reach the set temp of 76, usually it needs an hour or so, but then, after the thermostat already shows the set temp of 76, it still continues to run even longer hours, usually 3 to 4 hours before it can stop for the first time. I understand that when the thermostat shows 76, it is probably at higher end of 76, say, 76.9, and the system continues to cool the house until it reaches the lower end of 76, say, 76.1 or 76.2. But what is causing such long hours of continuous running after thermostat reads 76? It should not take 4 hours to reduce temperature from say, 76.9 to 76.1. What could be the problem with the air conditioner?

    Thanks for your help in advance!
    Diane Carol's Avatar
    Diane Carol Posts: 76, Reputation: 4
    Junior Member
    		  
    #2

    Jul 27, 2008, 06:45 PM
    There is a cut-off switch that stops the action when the temperature falls to a certain temperature. The range is usually 3 - 5 degrees. Evidently, the switch is malfunctioning and the action goes on longer than necessary when the range of difference is met.
    The dealer who sold you the unit... or the manufacturer could be got in touch with and service dealt with.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Jul 27, 2008, 06:59 PM
    If it is a digital thermostat the overlap or run time might be adjustable. Usually this is not a user friendly setting to adjust. If you have your instruction manual from the install it will be contained in there. If the people that put your equipment in did not leave it I would demand they get one and also the books for all your new equipment. All manuals state to leave for the homeowner. If no luck Call the building department that did the inspections on your new home and ask them why they do not enforce the code for leaving all the manuals at site.
    jjpamela's Avatar
    jjpamela Posts: 2, Reputation: 1
    New Member
    		  
    #4

    Jul 8, 2012, 08:13 PM
    Air condition is running non stop and will not cool house until around 3am its 11 and still 85 in house only small amt of air blowing from vent antifreeze just put in last month what could be problem
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Heating turns itself off before reaching desired temp [ 9 Answers ]

Background: I have an older Trane furnace (manufactured 8/1994) made by American Furnace Inc. (The Trane Company, Trenton, NJ) model TUJ080A936A0. The module controller is by White-Rodgers Emerson Electric Co. Model 50A52-101. There is no gas pilot light. Problem: Recently, my gas valve will...

Car dying after reaching operation temp [ 11 Answers ]

98 Honda CIvic 4 door EX Posted it up on Honda forums as well but I decided to try over here as well So the problem is: When it reached operation temp it shoots off , just like that Recently replaced parts due this issue

Furnace not reaching target temp [ 12 Answers ]

My furnace never reaches the target temperature on the thermostat. Even if I increase the temp on the thermostat, the temperature is never met. The current temp is set for 74 degrees, it was 62 this morning? The furnace is a Goodman, the thermostat is digital. I just replaced the thermostat...

Heating unit not reaching room temp [ 1 Answers ]

My heating unit doesn't generate enough heat. Everything comes on but stops running before reaching room temperature. I've turned on and off the wall-thermostat and it works. Is this a sign that the wall-thermostat is going bad or went bad on me?

Carier furnace shuts off before reaching temp [ 2 Answers ]

I have a carier weathermaker furnace that shuts off before reaching temp. any idea what could be the problem.

View more questions Search