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Well I tested the limit switch and the two manual reset flame rollout switches that are inline with the limit switch. All seem to work correctly. When I turn to power back on, the system will work...

Thanks for the quick reply. How would I test the new limit switch? Also is this the only switch that could be a problem?

I have a Trane XR80 furnace that has an LED flashing 4 times--Open High Limit Device. The filters are new and clean, I replaced the high limit switch, cleaned the flame sensor. Are there other...

Hi all,
I have a 6 year old Trane XR80 furnace that will not stay lit. It will light for about 2-3 minutes than will go out. It will stay out until the system is turned off for a significant...