Upstairs unit will not shut off after set temperature is reached. If set at 78, it will still be running and the temperature will be 76 or lower. It does stop eventually on its own or when I trip the breaker. Doesn't do it with the downstairs unit and there is no correlation between the downstairs temperature setting and when the upstairs turns off.

SOURCE: No air flow upstairs

Cold air is denser than hot air, so is harder to move. All vents have some mechanism to regulate flow, so close all of the downstairs vents. Check to see if your furnace fan motor has more than one speed, & set it on maximum. Keeping the fan on all the time will help as well. If all else fails, you may need a more powerful fan motor.

t1m130

• 86 Answers
• Posted on Jul 14, 2009

SOURCE: Carrier Air Conditioner- not reaching set temperature

if it is set to 76 degrees and its 78 in the house its working fine it is suppose to shut off once it reaches 76 but sometimes there is a 1 or 2 degree differential built ini would keep you filter clean and as long as it blows out cold air i wouldnt be to concerned most airconditioners need yearly cleanings though

Paul

• 144 Answers
• Posted on Apr 02, 2010

SOURCE: I have an goodman model # gsc130241ae ac unit

Does the blower indoors run and move air? if not it would mean that you don't have power to the furnace.
The 24 volt transformer in the furnace is used to power the thermostat and the control circuit on the A/C unit outdoors. Or you could have blown a fuse on the computer board in the furnace.
If this has helped please rate me, and If you need more help, give me some more info.
Thanks,
Paul