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gregger77

Trane XL80 Furnace Blower Noise

gregger77
10 years ago

Good day,

I have a 2002 Trane XL80 (Model No. TXC049C4HPD0) gas furnace whose blower section recently started getting noisy.

On low speed the blower is silent, but as it raises to higher speed (after the burner has heated up the unit), it softly starts to squeal (sort of like auto brake squeal), and the noise sometimes gets a little louder, then softer, then disappears, the starts again. In other words, it's variable and not really loud---yet.

Questions

1) Does this blower motor and blower bearing accept lubrication?

2) Does this kind of squeal usually emanate from the blower wheel itself, or from the motor?

3) How to know which element is faulty?

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