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What does a flashing red light indicate on a Trane furnace?

Oliver Wellington, HVAC Repair Expert

A blinking red light on a Trane furnace typically signifies a fault or error within the system. The number of flashes can indicate the specific error code, which can be found in your furnace’s user manual. Common issues include ignition failure, pressure switch problems, or flame sensor issues. To resolve the problem, consult a qualified technician or reach out to our team for assistance.

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