Fixing Error Code 228 on Your Lennox® Furnace

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

This indicates your furnace couldn’t adjust its pressure switch before turning on. As a consequence, your system will not run for safety reasons.

Repairing or replacing this part is better left to the technicians at Service Experts Heating & Air Conditioning in Ocala. Our NATE-certified technicians are among the brightest in the industry. They’re well-equipped to handle all of your heating needs, including clearing a furnace error.

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

How a Pressure Switch Works

This part plays a critical role as your furnace prepares to work in your space.

Here’s what goes on after your thermostat’s call for heat:

  • Your furnace’s control board starts running the draft inducer blower motor. This exhausts combustion gases from the heat exchanger and brings 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 provides heat.

What Happens When a Pressure Switch Breaks Down

When your pressure switch isn’t operating correctly, you’ll likely hear the fan going and the switch clicking multiple times before the furnace shuts down completely. When a part isn’t working right, your furnace will turn off to protect you.

Your furnace will tell you something is amiss 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 notice fast flashes or an alternating slow flash as it communicates a fault code.

Estimated Repair Cost for Furnace Error Code 228

Before replacing the switch, your Service Experts Heating & Air Conditioning technician will look at other parts of your furnace first. A handful of other issues can also cause the error code, like a clogged vent or cracked hose.

The price to repair your furnace depends on what’s wrong with it and how long it takes to fix it.

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

Start with the Experts at Service Experts Heating & Air Conditioning

If you require furnace repair, trust the technicians from Service Experts Heating & Air Conditioning to understand the fault code and fix the problem to your requirements.

Call us at 352-414-4006 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.