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This is great info. Thanks hvac100. I'll keep my fingers crossed and hope it keeps running properly. Thanks again for your help.

The furnace was working fine for a while again, but yesterday it acted up again. I cleaned the flame sensor and it seems to be working for now. I cleaned it before and it worked for a while, then...

I have a Trane XR80 furnace. The furnace works fine sometimes, and other times is will not light. I get no error on the LED indicator on the main board. The ignitor gets hot but the furnace will...