Trane Furnace 3 Red Flashes - Front End Developer เงนเดอนpittube Category If your furnace light is blinking three times, it means that there is an issue with the pressure sensor switch. This can occur for various reasons, such as a dirty filter, closed vents, or overheating. To address this issue indicated by the red light flashing on my trane furnace, first check if there’s power to your unit and ensure that your thermostat is set correctly. If those aspects are. It stopped working and the red light is blinking 3 times.
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