Lennox Furnace Error Code 270 Solved in Roanoke

Feeling frigid because you’re getting error code 270 from your Lennox® furnace?

This shows you that your furnace ignitor can’t start the flame. After five failed tries, the furnace will quit trying to ignite. It will then change into Watchguard mode for about an hour for safety reasons.

When your ignitor stops working, it’s better to rely on our NATE-certified technicians. They’ve gone through detailed education, so you can rest easy knowing they’ll determine what’s causing the furnace error and will mend it to your standards.

We trust in the quality of our furnace repair in Roanoke so much, we back it with a 100% Satisfaction Guarantee* for a year.

How a Furnace Ignitor Works

This part ignites natural gas, which helps warm up your house.

Here’s how a furnace ignitor works:

  • Thermostat begins call for heat.
  • Furnace ignitor and blower become activated.
  • Ignitor heats to as hot as 2,500 degrees Fahrenheit and ignites burner gas.

A furnace ignitor should last approximately three to five years before it breaks and needs to be subbed out for a new part. It can wear out sooner if you don’t replace your air filter regularly, since a dirty one can cause your heating system to short cycle.

What Happens When a Furnace Ignitor Breaks Down

Your furnace will demonstrate for you there’s something wrong with a red flash from its indicator light, which it uses to communicate error codes. It has this red light to flash code, much like Morse code.

You might see fast flashes or an alternating slow flash as it shares a fault code.

Estimated Repair Cost for Furnace Error Code 270

The cost to restore your furnace hinges on what the issue is with it and how long it takes to repair it.

Before your technician replaces your ignitor, he or she will check:

  • Gas flow
  • Flame sensor current
  • Air filter

Your technician will also make sure the ignitor is legitimately lighting the burner and that there are no interferences or cracked hoses within your home.

An ignitor often fails when you need it most, resulting in an after-hours repair call.

Here’s the typical costs to replace it:

  • $200 during normal service hours
  • $300 to $400 after hours

Trust the Experts at Service Experts Heating & Air Conditioning

When you need Expert furnace repair, you can rely on our highly knowledgable technicians at Service Experts Heating & Air Conditioning. We’ll repair your furnace and quickly get your heat running again.

Call us at 540-302-8645 or schedule an appointment online today.


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At Service Experts, our top priority is always the health and safety of our customers and team. We are following all COVID-19 (Coronavirus) public safety guidelines and adjusting our business practices as needed to ensure customer and employee wellbeing. As a precautionary measure, anyone working on behalf of Service Experts – including our technicians – is being asked to stay home for the recommended 14 day quarantine period if they are returning from out-of-country, have been exposed to a presumptive or confirmed case, or are feeling unwell. We are providing our technicians and other field employees with additional health and safety guidance to assist in keeping our customers and employees safe. Please be prepared to answer brief health and safety questions with our representative. We will continue to monitor the situation and will adjust our business practices as required. We recognize that this may be a particularly stressful time and want you to know that, we are committed to serving you and making your experience as easy as possible.