1988 Bryant AC Unit has been working consistently for over 12 years.
We had an electrical surge and it wouldn't start back up.
Fuses checked - fine
Contactor - replaced
Run capacitor appears fine and reads the appropriate MFDs.
Run Capacitor appeared fine, but the MFDs weren't there. Replaced.
Relay switch appears fine. Not sure how to test.
Board appears fine. Not sure how to test.
I'm getting 240V in, getting 24V from the thermostat, but it won't kick on.
I depress the contactor plunger and it starts up. I hold for 30 seconds and it continues to run. Then it shuts off once temp is obtained and won't start up.
Any ideas?
Does this look normal?
You need a voltmeter. There is a diagnostic sticky at the top you need to follow.
Be VERY careful manually activating the contactor. There is a danger of a flash.
Not sure what the relay is for. Does it look normal ?? I guess.
My wine fridge is running out of space so I’m planing on doing what I’ve always wanted to do and throwing out the junk in this storage closet and turning it in to an actual small wine cellar.
[img]https://cimg9.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x1504/b0d7efe2_d239_4628_9f96_1264b7fd03af_0bf4d864999d21fd5b59cf6ed2cd7563989288b0.jpeg[/img]
The walls are barely insulated (R = 0.52) The ceiling and floor are uninsulated.
I’m thinking of throwing 1.5” of EPS insulation on the walls and 3” on the ceiling.
Total space to be cooled approx 165 cubic feet.
target temperature 54 F.
Expected Max temp outside the two lateral walls and door 75.
Temp behind back wall and floor 65 (below ground).
Max temp over ceiling might get to 85 at the peak of summer.
I’ve been looking at cooling systems and I have absolutely no idea how much cooling I need for this. Is there a way to calculate this (or guestimate it)?
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The AC compressor outside seems to start with a hesitant groan before the fan gets to speed. (I wanted to attach a video recording but not seeing the go advanced prompt)
I'm guessing it's roughly 40 years old. Do I need to replace the motor?Read More
08-01-22, 04:39 PM
