Trane xe 80 furnance

Old 10-30-19, 06:21 AM
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Trane xe 80 furnance

unit is over 20yrs old it starts up fine but after time heat shuts off furnance keeps running blowing out cold air
Old 10-30-19, 06:15 PM
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You need to look thru the sight glass in the blower door to observe the flashing LED fault code.
It sounds like the burner is shutting down on high heat.

Have you checked/replaced the filter ?
Check for blocked returns ?
Make sure the registers are open.

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