Why Is There a Blinking Red Light on My Furnace?

Most furnaces come with an indicator light that displays different colors or codes, depending on their operating status. Knowing the meaning behind these lights can help you address small problems quickly before extensive issues occur. If there is a blinking red light on your unit, you may need assistance from a local HVAC repair technician. It usually means you need to take action to get the system running again. Read on to learn more. 

Possible Reasons for a Blinking Red Light on a Furnace

A blinking red light generally means something has gone wrong internally with the operation of the furnace. For the safety of your household, it’s best to have the unit inspected by a professional. If repairs are necessary, have them done right away. Here are some possible reasons there is a blinking red light on your furnace. 

The Thermostat Is Malfunctioning and/or Needs Resetting

Before contacting heating and air conditioner maintenance companies, check your thermostat. Sometimes, HVAC issues occur due to incorrect thermostat settings. If this is the case, you must reset or recalibrate your thermostat. It is also possible the thermostat is malfunctioning and in need of replacement. 

Furnace Needs Maintenance

Regular maintenance is essential to keeping your furnace in good shape. Neglecting your equipment will cause its efficiency to suffer. Schedule routine tune-ups with reputable professionals so your furnace continues to perform well and safely. Proper care will also save from costly repairs in the future. 

Low Gas Pressure

Gas pressure plays a significant role in the efficiency of your furnace. When it is too low, your equipment will struggle to keep your living space comfortable. Low gas pressure will also cause condensation buildup in the heat exchanger, increasing the likelihood of corrosion. Once this component rusts, you will need to have it replaced. Have your gas pressure tested regularly and adjusted if necessary. 

Pilot Light Is Out

The pilot light of your furnace can go out for various reasons. This issue can occur if your gas is shut off or your furnace is filthy. If the pilot light keeps going out or is in a red or yellow color, it may not be getting sufficient fuel. Hire an experienced HVAC repair technician to maintain and restart your pilot light for your safety. 

Blower Motor Malfunctioning 

Your furnace’s blower motor pushes warm or conditioned air through the vents. It may fail due to normal wear and tear and excessive exposure to heat or moisture. Like other parts of your HVAC system, it requires regular cleaning and maintenance. Debris can build up on the blower fan, causing it to work harder and straining its components. 

A blinking red light might show up on your furnace if there are issues with the mechanical components of the blower motor, such as loose wiring. Difficulty keeping indoor spaces comfortable, absence of air from the vents and higher energy costs are common signs you need a new blower motor. Reliable HVAC installation companies will carefully assess your equipment to determine if it needs repairs or replacement parts. 

How to Troubleshoot the Problem

Check the Blower and Ignition

Do a visual inspection of the blower. Check if it has signs of wear or tear or disconnected wiring. You should also inspect the ignition or the part of the furnace that regulates the fuel within the system. Contact a technician immediately if you suspect something is wrong with these components. 

Replace Filters

How long has it been since you replaced your HVAC system’s air filters? Regular filter cleaning or replacement helps ensure air passes effortlessly through the system. It is also the easiest way to avoid system malfunctions. Dirty filters will compromise the efficiency of your equipment and strain its components. They can also negatively affect your indoor air quality. 

Reset Your Furnace

You can usually find the reset button near the main control panel of your furnace. The manufacturer’s manual should indicate the location of this component. HVAC installation companies may be able to assist if you can’t locate the reset button. 

Once you have found the reset button, press it down using a thin object like a pen end or tweezers. If you’re successful, you will hear an audible sound and see that the red light is gone.  

Why You Should Invest in a Preventative Maintenance Program

Avoid Sudden Breakdowns

Your HVAC system is less likely to malfunction or suddenly break down if it receives proper care. During your appointment, your technician will carefully assess the system. They will clean your equipment and replace filters if necessary. Regular inspections and maintenance also allow professionals to catch and fix minor issues before they affect your furnace’s efficiency. 

Maintain Good Indoor Air Quality

Like outdoor air, the air you breathe inside your home carries pollutants that can trigger allergic reactions and asthma attacks. Dust mites, pet dander, mold and pollen are among the most common indoor allergens. You can reduce them and keep your indoor air as clean as possible with an efficient HVAC system. 

Save More Money

If your HVAC system is in good shape, it will perform efficiently and won’t consume as much energy. Proper care will help extend the life of your equipment and reduce the chances of needing costly repairs. Investing in a preventative maintenance program is also one way to ensure your unit’s warranties remain valid. 

Keep Your Living Space Safe and Comfortable

Your indoor comfort highly depends on how well your HVAC system operates. The last thing you want to happen is for your unit to malfunction in the middle of summer or winter. Regular maintenance will help your equipment burn fuel efficiently. It will also keep your loved ones safe and cozy all year round. 

Dependable professionals at Cafco Services are here to keep your HVAC system in optimal condition. We are one of the area’s leading heating and air conditioner maintenance companies. You can also count on us for reliable indoor air quality solutions. Call us at (513) 242-3400 or complete our online form to schedule a service.