Lennox Furnace Error Code 270 Solved in West Chester

Feeling a chill because you’re seeing error code 270 from your Lennox® furnace?

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

When your ignitor stops working, it’s best to count on our NATE-certified technicians. They’ve gone through rigorous instruction, so you can rest easy knowing they’ll find out what’s causing the furnace error and will repair it to your satisfaction.

We believe in the quality of our furnace repair in West Chester 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 heat your space.

Here’s how a furnace ignitor works:

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

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

What Happens When a Furnace Ignitor Breaks Down

Your furnace will show you there’s an issue with a red flash from its indicator light, which it uses to exhibit 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 price to mend your furnace rests on what the issue is with it and the time it takes to repair it.

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

  • Gas flow
  • Flame sensor current
  • Air filter

Your HVAC pro will also make sure the ignitor is truly lighting the burner and that there are no obstructions or cracked hoses within your home.

An ignitor often fails when you need it most, bringing about an after-hours maintenance call.

Here’s the average costs to replace it:

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

Trust the Experts at Wesley Wood Service Experts Heating & Air Conditioning

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

Call us at 484-401-7577 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.