Honeywell Thermostat Says Heat On But No Heat - Verify that the thermostat is set to heat and is calling for heat, usually indicated by the words heat on, a flame. If it is on, then check for any issues with the furnace’s igniter. If your digital honeywell thermostat has a blank screen or isn't. Check your electrical panel for tripped breakers. Web first, check if the thermostat temperature setting is higher than the current room temperature. Web a honeywell thermostat can say “heat on” when there is no heat if the furnace filter or fan blades are clogged. Ensure it’s in “ heat”. Web first, take a look at the gas switch and make sure it’s turned on.
Web first, take a look at the gas switch and make sure it’s turned on. If it is on, then check for any issues with the furnace’s igniter. Check your electrical panel for tripped breakers. Verify that the thermostat is set to heat and is calling for heat, usually indicated by the words heat on, a flame. Web a honeywell thermostat can say “heat on” when there is no heat if the furnace filter or fan blades are clogged. Web first, check if the thermostat temperature setting is higher than the current room temperature. If your digital honeywell thermostat has a blank screen or isn't. Ensure it’s in “ heat”.