Why Is My Thermostat Blank Even Though the Breaker Is Not Tripped?
TL;DR: Thermostat Blank Even Though the Breaker Is Not Tripped A breaker that is on does not prove your thermostat has power. The thermostat usually gets low-voltage power through the furnace or air handler. Check the simple things first: batteries, indoor HVAC breaker, service switch, furnace panel, condensate water, and thermostat connection. A blank thermostat … Read more
