I have a Trane XR80. The red light flashes 4 times. I have cleaned and(04)

I have a Trane XR80. The red light flashes 4 times. I have cleaned and(04)


Image gallery: Trane Furnace 3 Red Flashes

Trane Furnace Red Light Flashing [All Blinks Solved] FireplaceHubs Trane Furnace Blinking Red Light 3 Times Noconexpress Trane Furnace Red Light Flashing [All Blinks Solved] FireplaceHubs Trane XL80 furnace flashing red light, what is the problem? I have a Trane XR80. The red light flashes 4 times. I have cleaned and Trane Furnace Blinking Red Light 3 Times Noconexpress Trane XV90 furnace, red LED flashes 4 times, then flash 9 times after a Fixing a Pressure Sensor Switch in a Furnace Dengarden