One of the common reasons your thermostat screen goes blank is due to a circuit breaker trip. Check your circuit breaker. If you notice that it has tripped, reset it to power on your thermostat.
If you still notice a blank screen, resetting your Cielo Smart Thermostat Eco can help resolve the issue. To reset it, just pull your thermostat off the wall for 1-2 minutes and then put it back in its place.
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