I had a Carrier Infinity system installed last fall and I've gotta tell you, the heating season was friggin sweeet.
Great temperature, humidity was perfect and sound levels were wonderful. However, the cooling season has been a bit more of a hassel.
Last night, the outdoor temperature when I got home was 76 and I was trying to cool the house to 74 with the humidity level set right in the middle. The machine ran for 5 hours! Eventually, the outdoor temp was 67 and I was trying to cool to 73 and I finally said screw it, turned it up to 74 and went to bed.
What's going on?
I checked out recent faults on the t stat and it said there have been 29 low pressure switch events. Is that a problem?
I was also wondering if the placement of the the humidifier could be a problem. It is placed above the furnace so I can open it and see the coil. When it is very humid, as it has been recently, the outside of the humidifier and the supply that connects it to the return side, get covered in condensation (even though the damper is closed.). It seems to be inturrupting the return of cold air to the living space.
I have a damper controlled AprilAire fresh air intake that I keep closed whenever the temp gets above 80. (I wish AprilAire let me set temps and humidity levels instead of just time intervals.)
I had a Manual J and blower door test done and ended up downsizing from a 3 ton unit to a 1.5 ton unit. I understand the need for it to run for dehumidification but, this seems extreme.