Table of Contents
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. If your furnace has a digital display that provides a fault code, you can easily check the fault code to diagnose the problem.
How do you fix a red light on a furnace?
You can reset your furnace by cutting the power to the furnace at the breaker. Leave it off for a few seconds, and then turn it back on. Like your computer, sometimes you just need to turn it off and back on again.
How do I reset my furnace?
How to Reset an Electric Furnace First, turn off the power supply to the furnace by turning off the breaker in the circuit box. Locate the reset button on the furnace and press it to reset the furnace. If the button is popped up, press it down. Return the cover to the blower compartment and turn the power on.
What color should the light be on the furnace?
What Color Should a Furnace Flame Be? Your natural gas furnace’s burner flames should be almost totally blue. The sign of a good natural gas furnace, according to heating service professionals, is a roaring blue flame with a light blue triangle in the center.
How do you reset the pilot light on a furnace?
How Can I Restart My Pilot Light? Step 1: Turn off your furnace. Step 2: Locate your gas valve. Step 3: Hold down the red button. Step 4: Light the pilot light. Step 5: Let go of the button. Step 6: Turn your gas back on. Step 7: Turn your furnace back on.
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.
How long does it take for furnace to reset?
Either way, restarting a furnace is a relatively simple task that takes no longer than 10 minutes to complete. Follow these steps to reset your gas furnace: Turn the circuit breaker off and switch the furnace power button off too. Never touch the breaker with wet hands and use only one hand to do it.
What would cause a furnace not to kick on?
The Pilot Light (Faulty Ignition Sensor) The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. This is typically the problem if you can hear your furnace click on but it does not fire up. If the sensor or ignitor is dirty, it will need to be cleaned.
How do I get my furnace to kick on?
Furnace Won’t Start FAQs Check your circuit breakers. Check your thermostat settings. Ensure your furnace filters are clean. Check your pilot light. Check your blower motor. Check the furnace ignition switch.
What Should gas furnace flame look like?
The burner flames from your natural gas furnace should look blue or almost completely blue. A healthy natural gas furnace flame is characterized by a roaring blue flame with a light blue triangle in its center. There may be a tiny tip of yellow.
Why are my furnace flames orange?
When flames are yellow or orange it is a sign of dirt build up in the burner, or other possible issues. An unstable flickering yellow or orange flame is an indication that the furnace is not producing an appropriate mixture of gas and oxygen. Ignoring this sign can lead to a large gas leak and lead to disaster.
What color should flame be?
A healthy, properly burning flame on gas appliances should be blue in color, sometimes with a tiny tip of yellow, with a little light blue triangle at the center. This blue color flame indicates that there is safe, efficient and more complete fuel combustion.
Will gas leak if pilot light is off?
If the pilot light goes out on a storage or instantaneous hot water heater, space heater or a ducted heater, you will not have a gas leak. This is because all modern gas appliances with pilot lights have a fail-safe device that closes off the gas to the appliance in the case when the pilot may go out.
Does gas stop if pilot light goes out?
The pilot light is a small gas flame that stays lit all the time. When the thermocouple senses a lit pilot, it leaves the main gas valve open. If the pilot light is out, or isn’t burning hot enough, it closes the valve, cutting off gas flow so it won’t build up inside your house.
Can I relight the pilot light by myself?
If your pilot light goes out, your furnace will not be able to produce heat because its burners will not ignite. Often, homeowners can relight the pilot themselves.
What does it mean when my furnace light blinks 4 times?
Why is my furnace light blinking 4 times? Four red flashes indicate that a 24-volt fuse or the high-limit switch is open. Possible causes include an improperly sized ducting system, a dirty air filter, a faulty blower motor, an open fuse on the control board or restricted circulating airflow.
Why is my Lennox furnace blinking red?
If you realize that a solitary light blinking slowly and the other flashing quickly, your heating system could be experiencing a low flame signal. This can take place even when your furnace is heating correctly. It signifies the flame sensing rod could be dirty or in the incorrect location on the burner.
Why is there a red light flashing on my Trane furnace?
The red blinking light for your Trane XR90 furnace indicates that your unit was shut off due to a problem. When your red light is continuously on it indicates the circuit board needs replacement. Another part of the red light system is when it is continuously off, this shows you need to check the power of your furnace.
How much does it cost to replace a furnace flame sensor?
You can expect to pay between $350 and $500 for a new flame sensor if you call a furnace repair company.
How often should you clean your flame sensor on your furnace?
A good rule-of-thumb is to change your filters every two to three months and to have the furnace fully cleaned once a year. The best time to clean your gas furnace is during the warmer months where you do not need to heat your home.
