I have a Nordyne AC/Gas Furnace single stage unit. The model number is c7bam03036c-b. The AC works very well in summer time. Now it's getting cold. I turned to heat. There is no air blowing out. So I checked the unit the gas is not ignited. The fan is not running. I checked the wiring at the thermostat and in the unit it seems correct. I get 27V at R wire. All other wires has no reading. The status indicator in the unit is normal, green and red lights are on and not blinking. What else can I check?
You should be getting 24-volts +- back from the thermostat to the furnace on the white wire. If you are not getting this, the thermostat in not really calling for heat. Jumper from the red wire on your furnace to the white wire at the furnace. the furnace should start. This is fairly technical stuff. You may want to consult a pro.