Next, the fix to your issue can be as simple as removing power from the unit and then powering it. As long as you didn’t request a reset, you must know that your ecobee will not reset just because the screen went. Web hence, this could be the reason why your thermostat isn’t turning on at all. This could potentially solve your black screen problem. Web you do not need to worry about losing your settings whenever the screen goes blank. Web a sudden black screen indicates insufficient voltage. Try power cycling the unit. In case you have just installed your ecobee thermostat, the chances are that the above tips won’t work out for you. Web check your filters and clean or replace them if they are clogged. Test the voltage between rc and c with a voltmeter;
Web you do not need to worry about losing your settings whenever the screen goes blank. As long as you didn’t request a reset, you must know that your ecobee will not reset just because the screen went. Web a sudden black screen indicates insufficient voltage. Web you do not need to worry about losing your settings whenever the screen goes blank. Check for a burnt fuse. Try power cycling the unit. If your filters are not the issue, proceed to the next step. Test the voltage between rc and c with a voltmeter; Check for a tripped circuit in the breaker box and reset it. Next, the fix to your issue can be as simple as removing power from the unit and then powering it. Web hence, this could be the reason why your thermostat isn’t turning on at all.
