| I can't remember if there is a small fuse inside some digital thermostats or not. There are so many things inside, even dip switches. I know from my own experiences with digital stats that if the power is turned off, the stat goes blank. But it will restore function once the power is reset at the breaker or throw switch. But if left off for too long, I have to reprogram at least some of the functions. But the screen is never totally blank, once power is reset.
You have nothing to lose to pop the cover to see if there is a small fuse inside that stat, if no one else responds to this thread soon. |