Nordyne furnace starts & stops
I have a 8/9 yr old Nordyne gas furnace. I am remodeling this home and at night I shut the heat off to save energy. When start in the morn. I turn it on and set the theromstat at 65 deg. And it will start up and run but before it reaches what ever temperature I set it at, it will shut the burner off and cool down as if it has reached the required temp. With in a min. or less it will start all over again. Some times after it shuts down and as soon as the blower stops, it will start up again. If I jumper R & W it will keep on running and heat the house until I disconect the jumper. I have run new 14/3 wire from elect. Panel to the furnace and checked voltage, (123 v), polarity, grounded the furnace, run new 18ga. Thermostat wire, tried 3 different thermostats. Checked the ohms on the gas valve wire, (4.4ohms) and set the anticipator to 4.4. There is 24 v. going to the board. The condenstate line and inducer vent are clear. The thermostat is mounted on a inside wall. I even remounted it in the center of the room temporarily as not to pick up the cold from the plastered wall. How can I keep it running and get up to the desired temp?