A Honeywell smart thermostat not turning ON heat can happen for many reasons. A faulty thermostat, a broken heating system, power losses, damaged wiring, et al. Here, we list some of these causes, and offer repair tips to solve these no-heat issues. First, we look at what might have happened with the Honeywell Smart Thermostat … Continue reading Honeywell Smart Thermostat Not Turning ON Heat