My cz20110 model heater will turn on and give out heat, but my screen just stays blank so I can't change modes or temp at all. Is there a way to fix this? I've tried the unplugging and plug it back in method, but that didn't work. It had the screen when we first plugged it in but we lost power due to a storm and that's when it just disapeared.

Heating & Cooling - Comfort Zone