Trane XR80 Troubleshooting Slowly flashing shows your furnace is on and does not need heat. When it is flashing fast there is heat throughout your home. A continuous green light means the IFC circuit board needs replacing. Meanwhile a continuous off means the furnace is either off or not receiving any electrical power.

What does a blinking red and green light mean on a furnace?

Depending upon your unit, it may be signaling that it has exceeded the allowable times to attempt to start and will not provide heat until checked. Inappropriately located flames, gas valve problems and low flames are all urgent problems.

How do you read a Trane furnace error code?





Watch for Trane Furnace Error Codes that Flash Multiple Times

  1. Two flashes means that there has been a system lockout.
  2. Three flashes indicates a draft pressure error.
  3. Four flashes and your furnace is experiencing an open temperature limit circuit issue.

What does a red flash code indicate?

1 RED FLASH: This indicates that flame was sensed when there was not a call for heat. With this fault code the control will turn on both the inducer motor and supply air blower. A gas valve that leaks through or is slow closing would typically cause this fault.

What does red light on furnace mean?

If your oil furnace isn’t coming on, you may see a red light illuminated on the burner unit. When lit, this red light, also called a lockout light, indicates that a safety mechanism on your furnace has caused a shutdown because it has detected a problem or recognized a fault.

What does 4 flashes on a Trane furnace mean?

4 Flashes. There is an open temperature limit circuit issue (or an open high limit switch). What is this? Make sure that the flame sensor rod on the switch is not dirty.

Should there be a red light on my furnace?





The heater’s red light being on is a good thing. If it’s completely off, the heater has lost power. If you notice the red light isn’t on or it’s flashing, contact a professional HVAC specialist to pinpoint the reason and make the necessary repair.

How do you fix a blinking red light on a furnace?

This could be an indicator your flame sensor is dirty, and cleaning it should fix it. However, this could also mean there is a problem with the gas valve or ignitors. Gas can be intimidating to mess with, so it’s best to call Doc Dancer.

What does 2 flashes mean on furnace?

2 Flash Code



If your furnace is flashing 2 times it likely means the furnace is blowing cold air. This is happening most likely because the furnace is unable to catch a flame.

How do you reset the pilot light on a furnace?

Quote from the video:
Quote from Youtube video: First set the gas valve to the pilot. Position hold down the bypass button to let gas into the pilot. Keep holding the button and use a barbecue lighter to insert a flame over the pilot.

Why is my furnace not starting?



If your furnace is not turning on you should first check if the filter is clean. Dirty filters cause insufficient airflow and can prevent the furnace from starting. Other reasons it won’t start can stem from improper thermostat settings, forgetting to turn on the gas line, or faulty pilot light.

How many times can I hit the reset button on my furnace?

Don’t hit “reset” more than twice. The process pumps oil into the burner chamber, where it can accumulate if you have no ignition. Then when the furnace finally does start, it can do so explosively. So if the button won’t reset, or quickly pops up again, it’s time to call a professional repair service.