Fixing Error Code 228 on Your Lennox® Furnace

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

This shows your HVAC equipment couldn’t regulate its pressure switch before starting. As a consequence, your system will not run for safety reasons.

Repairing or replacing this part is best left to the professionals at San Antonio Air Service Experts in San Antonio. Our NATE-certified technicians are among the elite in the industry. They’re well-qualified to work on all of your heating needs, including fixing a furnace error.

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

How a Pressure Switch Works

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

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

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

What Happens When a Pressure Switch Malfunctions

When your pressure switch isn’t operating correctly, you’ll likely hear the fan start and the switch clicking a couple times before the furnace shuts down completely. When a part isn’t performing right, your furnace will turn off as a safety precaution.

Your furnace will show 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 note 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 San Antonio Air Service Experts Expert will check other parts of your furnace first. Some other issues can also cause the error code, like a blocked vent or cracked hose.

The bill to repair your furnace depends on what’s defective 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.

Start with the Experts at San Antonio Air Service Experts

If you should have furnace repair, turn to the pros from San Antonio Air Service Experts to diagnose the fault code and fix the problem to your satisfaction.

Call us at 210-570-9705 or schedule an appointment online today.


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