Central A/C issue ?

LikeLakes · 07-10-2023, 09:36 AM

Quote:

Originally Posted by TheProfessor

First guess.

These guys/gals - screwed something up.

Second guess - the AC unit is too old and kaput.

Easy check - I'm assuming this is a pad mount unit? If the fan is running (that fan pulls air through the coils to remove heat) and the compressor is running and cooling, the insulated copper lines running into the house will feel cold to the touch, just find a place where you can get by the insulation to feel the pipe. I'm guessing from your description that the outside unit is fine, you have an issue with the air handler not running.

bigdog · 07-10-2023, 10:07 AM

Quote:

Originally Posted by LikeLakes

Easy check - I'm assuming this is a pad mount unit? If the fan is running (that fan pulls air through the coils to remove heat) and the compressor is running and cooling, the insulated copper lines running into the house will feel cold to the touch, just find a place where you can get by the insulation to feel the pipe. I'm guessing from your description that the outside unit is fine, you have an issue with the air handler not running.

What you've described is correct. I have not felt the copper line, which will be my next test. I suspect the HVAC company will hook-up test gauges to test the refrigerant levels, etc. What concerns me is I con't feel any air blowing the floor vents, going to check electrical fuse panel for any tripped Breakers.

tummyman · 07-10-2023, 10:26 AM

If not a breaker, could be a broken wire that happened when furnace was installed. Seems like all issues might go back to the new furnace install. Have you run the furnace for heat since it was replaced and did you get air flowing from vents ? I think there is only one fan in the system for both heat and cool.

swnoel · 07-10-2023, 01:50 PM

Quote:

Originally Posted by bigdog

What you've described is correct. I have not felt the copper line, which will be my next test. I suspect the HVAC company will hook-up test gauges to test the refrigerant levels, etc. What concerns me is I con't feel any air blowing the floor vents, going to check electrical fuse panel for any tripped Breakers.

Then the air handler isn't on if the blower is running... they may have wired the ac incorrectly.

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bigdog (07-10-2023)

07-10-2023, 10:26 AM	#3
tummyman Senior Member Join Date: Aug 2009 Location: Moultonborough Posts: 842 Thanks: 258 Thanked 687 Times in 244 Posts	If not a breaker, could be a broken wire that happened when furnace was installed. Seems like all issues might go back to the new furnace install. Have you run the furnace for heat since it was replaced and did you get air flowing from vents ? I think there is only one fan in the system for both heat and cool.