I have a Honeywell thermostat RTH6580WF that has been operating fine since we moved in 8 months ago. Today I decided to update the wifi settings so we can use that feature. Fast forward a few hours and now my furnace isn't producing heat (Lennox ML193UH). The fan continues to work but there is no heat. The lights are blinking simultaneously noting the furnace is operating properly. I also noticed there is no ignition. I cannot see any flames inside of the heating appliance thing.
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