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Troubleshooting Lennox Furnace Ignitor Problems A Comprehensive Guide

Troubleshooting Lennox Furnace Ignitor Problems: A Comprehensive Guide

Troubleshooting Lennox Furnace Ignitor Problems: A Comprehensive Guide

The Lennox brand of home furnaces is a popular choice for repairs and installation and has earned a reputation for being a reliable and energy-efficient option among homeowners. A furnace’s ignitor is an important part of the heating system as it is responsible for starting and maintaining the combustion process within the furnace. Over time, the ignitor can become worn or faulty and lead to troubleshooting for the Lennox furnace in the home. This comprehensive guide will cover the common Lennox furnace ignitor problems and the necessary steps to identify and repair them.

Step One: Check The Ignitor

The first step in troubleshooting a Lennox furnace is to check the ignitor itself. This requires the removal of the control panel and the access to the furnace. Once the panel is removed, look for any signs of physical damage to the ignitor. This can come in the form of cracks, chips, or discoloration. If the ignitor looks to be damaged, it will need to be replaced. In most cases, a new Lennox furnace ignitor can be purchased and installed without any major difficulties.

Step Two: Test The Pilot Light

If the ignitor looks to be in good condition, the next step is to test the pilot light. Make sure the gas supply is shut off before attempting to access the pilot light. Once the gas is shut off, the pilot light should be extinguished. If it does not go out, there is a problem with the flow of gas. It is possible for this issue to be caused by clogged burners or faulty connections within the furnace.

Step Three: Disconnect The Inducer Blower

Once the pilot light has been tested, the inducer blower should be disconnected. A clogged inducer blower can prevent the furnace from operating properly and lead to a malfunctioning of the ignitor. Carefully inspect the blower for signs of debris or corrosion. Make sure all connections are tight and clear of any debris. If necessary, the blower can be cleaned out with a vacuum or replaced entirely.

Step Four: Check Gas Pressure

Gas pressure is an important element for the operation of a Lennox furnace. If the gas pressure is too low, the ignitor will not be able to function correctly. The gas pressure should be checked with a pressure gauge to make sure the pressure is within the range indicated in the furnace’s user manual.

Step Five: Winterize The Furnace

The colder temperatures of winter can cause the performance of the Lennox furnace to drop. In order to keep the furnace working efficiently, it should be winterized prior to the cold season. This means that the furnace should be inspected for any damages and any necessary repairs should be carried out. Old filters should be replaced, the blower belt should be checked and tightened, and the oil supply should be replenished.

Step Six: Contact Professionals

If, after completing these steps, the Lennox furnace is still not functioning correctly, it is advised to contact qualified professionals. Professional HVAC technicians will be able to assess the malfunctioning system and have it back up and running in no time.

In conclusion, troubleshooting the Lennox furnace ignitor can be a daunting task for DIYers who are not familiar with furnace repairs. However, following these steps can help to identify and rectify the problems with the Lennox furnace ignitor and get the heat back on in the home. If you still wish to read more about Lennox Furnace Ignitor Problems, click here to gain more information on the topic. Alternatively, if you need assistance with any services related to Lennox Furnace Ignitor Problems, be sure to contact a Local Reliable Appliance Repair at (866) 516-1222.

Troubleshooting Lennox Furnace Ignitor Problems: A Comprehensive Guide
Troubleshooting Lennox Furnace Ignitor Problems: A Comprehensive Guide
Troubleshooting Lennox Furnace Ignitor Problems: A Comprehensive Guide

Preventive Action to Avoid Lennox Furnace Ignitor Problems

To prevent Lennox furnace ignitor problems and keep your HVAC system in top condition, there are several steps you can take. Below is an itemized list of manufacturer and technician's recommendations for avoiding Lennox furnace ignitor issues:

  1. Immediately replace air filters whenever they become dirty.
    -Replacing air filters regularly helps increase efficiency and reduce the stress on your furnace. According to manufacturers, changing air filters every three months is highly recommended.

  2. Schedule an annual tune-up.
    -Ensuring your furnace is running efficiently and safely can help reduce the chance of Lennox furnace ignitor problems. Have a qualified HVAC technician come out and perform a tune-up at least once a year.

  3. Check the ignitor.
    -Lennox furnace ignitors are known to fail or wear out over time. Inspect your furnace's ignitor periodically and replace it as needed.

  4. Monitor the ventilation system.
    -Check and make sure that there is sufficient air flow in the system and that the intake and exhaust vents are all clear. Poor ventilation can lead to furnace failures.

By following the technician and manufacturer's recommendations and implementing measures to prevent Lennox furnace ignitor issues, you can keep your HVAC system running efficiently and reduce the risk of Lennox furnace ignitor problems.

Repairing Lennox Furnace Ignitor Problems in San Diego

Getting professional advice and a reliable service for Lennox furnace ignitor problems in San Diego is essential. Local Reliable Appliance Repair can provide assistance with affordable repair and installation cost with a minimum repair of $200 and complex repairs and installation being at a cost of $850-1,200 and higher.

Below is a list of the most commonly replaced parts and their associated costs:
Thermocouple – approx. $30-$60
Pilot Orifice – approx. $5-$15
Pressure Switch – approx. $50-$125
Ignitor – approx. $100-$200
Flexible Gas Line – approx. $50-$70


Labor costs in San Diego can vary depending on the complexity of each particular job, but a typical repair can average around $100-$150, with installation being priced around $250-$300.

Materials & Details

Any additional materials or detailed services will be billed separately, depending on what is necessary. This can include things like: taping, venting, air handling / filtering, wiring, special installation materials, manual configurations, etc.

For reliable, affordable and expert repairs for Lennox furnace ignitor problems in San Diego, contact Local Reliable Appliance Repair at (866) 516-1222.

Looking To Fix Lennox Furnace Ignitor Problems?

Are you dealing with a Lennox Furnace Ignitor Problem? Are you considering how best to manage it?[1]
One of the best options available is to contact a professional technician and let them use their expertise to solve your furnace issues.

Local San Diego HVAC and appliance repair provider Reliable is a renowned name in the industry. This family-owned business has an impeccable track record of professional services and quality repair works that have earned them a long list of satisfied customers.[2]

Reliable’s team of technicians are all highly trained and experienced, with a minimum of five years in the industry. This ensures that your Lennox Furnace Ignitor Problem can be solved quickly, safely and efficiently. What’s more, Reliable offers same-day services, so you don’t need to wait for days or even weeks for an appointment.[3]

If you are a first-time client, Reliable will also give you $25 off labor. So, if you’re dealing with a Lennox Furnace Ignitor Problem and you’re looking for a reliable service provider, consider hiring Reliable. You can get in touch with them via (866) 516-1222.

At Reliable, you can be sure of a job done right. As a family-owned business that has been in this industry for decades, they understand the importance of delivering quality services that are cost-effective and hassle-free. Equipped with the right machinery and resources, as well as knowledgeable and efficient technicians, they are sure to solve your Lennox problem in no time.

So, don’t hesitate to contact Reliable and let these skilled technicians take your worries away. With them, you can be sure of a job done right the first time.[4]


If you are facing an issue with a Lennox furnace ignitor, contact Reliable Appliance Repair at (866) 516-1222. This family-owned local company offers same-day services for Lennox furnace ignitor problems, with highly trained technicians and a minimum of five years experience in the field. They also offer fair and affordable pricing and as a first-time customer, you can get $25 off your labor costs. This San Diego-based provider will quickly, safely and efficiently solve your ignitor problem without delay.

FAQ about Troubleshooting Lennox Furnace Ignitor Problems

What are the common causes of Lennox furnace ignitor problems?

The typical culprits behind Lennox furnace ignitor problems are lack of power or an aged, damaged, or corroded ignitor. Faulty wiring, dirty filters, and clogged burners can also cause issues.

How can I determine if my Lennox furnace ignitor is functioning properly?

Visually inspect it to ensure it is intact and not cracked. Even if there are no signs of damage, it may be beneficial to clean it and assess its functionality.

How do I check the furnace ignitor power?

Check the circuit breaker and make sure it has not been switched off. If it is on, make sure all control system wires, the primary control, and the ignitor are firmly connected.

Should I replace the ignitor or am I just dealing with a bad connection?

If the wiring, circuit breaker and connections appear to be functioning properly, it is likely an issue with the ignitor. This requires replacing the part.

How do I go about installing a new ignitor?

Switch off all power to the furnace. Carefully disconnect the old ignitor and remove it. Connect and install the new one. Turn on the power and test.

What if my problem persists after I've replaced the ignitor?

Troubleshoot other elements of the system, such as the burner assembly, the gas valve, circuit breakers, and the limit switches. If issues persist, it is best to contact Local Reliable Appliance Repair at (866) 516-1222.