[Ham_and_Cheese]

Originally Posted by GregR

Although the furnace breakers did not show tripped (ie, "middle" position between on and off), turning the air handler breaker (labeled A/H) off then back on "rebooted" the furnace and everything came back up. Also worth noting that on my new build, the A/C and A/H breakers are labeled backwards, so it wouldn't hurt to try cycling both of them off and back on again.

After thinking about it while waiting, I had only cycled the AC breaker - went back out and cycled both AC and AH and that did the trick.

Thanks everyone for the help - hope this thread helps someone else in the future