The plenum sensor will help prevent freezeups but if the cause of freezing is the A/C unit not low airflow from only one zone calling, it won't. Since you have a single stage A/C, having Y2 call means nothing. It shouldn't even be wired up. If it is, it is wired wrong though that isn't the cause of your problem. Your A/C should be wired to Y1 and nothing on Y2. What do you have the cool limit set to? I'd go no lower than 45, try 50 even. So they say the A/C is running just fine? Something is fishy. We use that panel with 3 zones at our office. Single stage A/C, 2 stage gas furnace. Has worked flawlessly.

All I can say is...........WOW! Isn't it amazing that the sky is an original piece of art every moment?

"Do you see xxxxx xxxxx ( Houzz) or xxxxx xxxxx (Facebook)? I wonder if that is because I usually log in with Facebook?" Is the ability to see a user's real name (or whatever they used as a real name to signup) new? I thought it was always appended to the end of ones profile URL and visible by visiting the user's profile or hovering their display name? If that's what you mean, it can be changed. Up to two times per year it says. https://www.houzz.com/changeUsername Edit: I see this was posted elsewhere but... I'll post it anyway. And no, my real name isn't chuggerguy. And it has nothing to do with drinking. I'm a slowpoke and sort of "chug" along, especially while backpacking uphill. :-)

My 25' loquat tree finally died. The fair amount of new lush green leaves it put out last spring slowly started dying off. Bark peeling worsened. Peeled completely off to the ground, in fact. No new growth has come out since last April. We removed it yesterday and put it out of its misery. Don't think the roots have any life left in them, but maybe a shoot will emerge one day, so we didn't have him grind out the stump. Not very hopeful a tree will regrow there. The arborist that removed it yesterday also concurred it was fully dead. Really changes the look of the front of the house for that to be gone. :(