Our AC unit was new with our house and is only 7 years old. We have a split zone system controlled by a Honeywell HZ322. Today we had no AC so I started looking at possible issues. When I got to the controller test, the AC test clicks a few times, on the controller, and says "AC voltage insufficient". The heat and fan will test fine.
If there is enough voltage for the fan and heat, how is it that only the AC is out? Is there a fuse for each area of the unit. One fuse each for fan, AC, heat, and so on? I am only seeing one.
I am familiar with electronics. Multi-meters and such so if you have any of those ideas feel free to post them.
Best Answer
The tech seems to think the HZ322 is going bad. The good news is they are not terribly expensive and fairly easy to program.
So since it started working he could not say what was wrong.