Fixing Error Code 228 on Your Lennox® Furnace

Not feeling heat and receiving error code 228 from your Lennox® furnace?

This indicates your HVAC equipment couldn’t correct its pressure switch before launching. As a result, your system will not run for your protection.

Repairing or replacing this part is a task for the technicians at Jack Nelson Service Experts Heating & Air Conditioning in Tulsa. Our NATE-certified technicians are among the best in the industry. They’re well-qualified to take care of all of your heating needs, including fixing a furnace error.

We want you to be completely satisfied with our quality furnace repair in Tulsa. That’s why we back it with a 100% Satisfaction Guarantee* for a year.

How a Pressure Switch Works

This part plays a critical duty as your furnace prepares to heat your space.

Here’s what happens after your thermostat’s call for heat:

  • Your furnace’s control board commences running the draft inducer blower motor. This exhausts combustion gases from the heat exchanger and moves in new gas and air so the burners can fire.
  • When the pressure switch senses that plenty of air is being pulled into the burners, it closes and signals the control board to ignite the furnace.
  • Your furnace ignites and creates heat.

What Happens When a Pressure Switch Malfunctions

When your pressure switch isn’t operating the way it should, you’ll likely hear the fan start and the switch clicking a few times before the furnace switches off completely. When a part isn’t performing right, your furnace will turn off to protect you.

Your furnace will tell you something is incorrect with a red flash from its indicator light, which it uses to display error codes. It uses this red light to flash code, like Morse code.

You may see short flashes or an alternating slow flash as it passes on a fault code.

Estimated Repair Cost for Furnace Error Code 228

Before replacing the switch, your Jack Nelson Service Experts Heating & Air Conditioning tech will check other parts of your furnace first. A handful of other issues can also create the error code, like a clogged vent or cracked hose.

The cost to remedy your furnace depends on the issue with it and how long it takes to fix it.

If your pressure switch needs to be replaced, you can plan to pay between $40 to $350.

Count on the Experts at Jack Nelson Service Experts Heating & Air Conditioning

If you need furnace repair, reach out to the pros from Jack Nelson Service Experts Heating & Air Conditioning to check out the fault code and fix the situation to your standards.

Call us at 918-212-8927 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.