During the night the furnace stopped heating the house and we all woke up chilled. The fan works and blows ambient air as hoped. Looking inside the shell of the furnace I can see that none of the (4) burners have flames. There is no "gas" odor. We have a gas water heater and it is working as expected. The furnace and water heater are about 2 ft apart.
I am stumped.
Any all suggestions appreciated!

-- cleso