I have a RUDD furnace model UGPJ-07-NAMGR. It had stopped working, so I replaced the thermostat but it is not the thermostat. When I hold the furnace reset button, the furnace will fire according to the setting on thermostat(heat or fan). As soon as I let go of the reset button, the heater stops working. It does not matter what I do to the thernostat, the heater will not fire.I crossed the red and white wire but nothing happens. The heater is supposed to fire when I cross wire, right?Thank You,David
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