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Trane 80% problem, need help
I went on a late night call, it was an upflow Trane 80% Model TUD080R936 2 stage 1995, any way the roll out link was blown. This is a typical install in a basement. I jumped out the link to see what was going on. The low speed flame came on and low speed inducer also. Then the blower came on and the flames were coming out of the chamber. It was late and i assumed the heat exchanger was bad. I put a new exchanger in it 2 days later and it still rolls out when the fan comes on. its fine before fan.