Trane Furnace 3 Red Flashes - Most likely a plugged condensate, or even just the port to the pressure switch is plugged. Is the vent motor coming in? When you see a red light blinking, it might mean trouble with your furnace’s gas valve or pressure switch. These parts are key to keeping your hvac system safe and working. It might be a steady red light blinking on the furnace or control board, or two blinks and a pause, or the furnace light blinking three times and pausing, only to repeat the sequence. 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.
Most likely a plugged condensate, or even just the port to the pressure switch is plugged. Is the vent motor coming in? When you see a red light blinking, it might mean trouble with your furnace’s gas valve or pressure switch. These parts are key to keeping your hvac system safe and working. It might be a steady red light blinking on the furnace or control board, or two blinks and a pause, or the furnace light blinking three times and pausing, only to repeat the sequence.