Looks like I left my wall control with both A/C zones on, but with the bottom switch off. I plugged in to 30 amp service. I flipped the bottom switch on, but before I could cycle through and turn off one unit, looks like I zapped the T-Stat wall control. Unplugged it and let it set a while, plugged it back in and it worked for a while but died again.<br/><br/>Screen now blank,...