Honeywell TC8000 Display Problem - http://www.hvacmechanic.com/ Forums
Original message
Perplexed411
"Honeywell TC8000 Display Problem"
, posted Thu 16 Oct 23:08
I have a Honeywell T8000c Thermostat that controls a Comfortmaker NTG3 model furnace. The Honeywell display does not work since there is no 24 volt power to the wall plate or at the circuit board of the hvac unit. The fuse is OK and the blower motor operates continuously if the furnace unit switch is in the on position. According to the manual wiring diagram, the blower operates directly off the house 115 volt power while the electronic gas ignition and the thermostat use 24 volt power from the unit transformer. Is there anything else that I can check before calling a service technician since I can't operate the furnace.
"Honeywell TC8000 Display Problem" 
