I have a high efficiency Amana furnace thats about 15 years old.
The automatic igniter does not seem to be going on properly. When the temperature drops, the blower turns on and cold air comes out. No igniter no gas. However, manually, if I turn the furnace off/on the igniter comes on and lights the gas. If I manually drop the thermostat then raise it also comes on. Not sure if this is an automatic sensor problem or what. ???