Fixing Error Code 228 on Your Lennox® Furnace

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

This means your HVAC equipment couldn’t correct its pressure switch before starting. As a result, your system will not run for your safety.

Repairing or replacing this part is better left to the professionals at Aramendia Plumbing, Heating and Air, A Service Experts Company in San Antonio. Our NATE-certified technicians are among the best in the industry. They’re well-equipped 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 role as your furnace prepares to work in your house.

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

  • Your furnace’s control board starts running the draft inducer blower motor. This drains 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 creates heat.

What Happens When a Pressure Switch Fails

When your pressure switch isn’t functioning promptly, you’ll likely hear the fan going and the switch clicking a couple times before the furnace turns off completely. When a part isn’t functioning right, your furnace will turn off to protect you.

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 see quick 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 Aramendia Plumbing, Heating and Air, A Service Experts Company Expert will check other parts of your furnace first. A handful of other issues can also generate the error code, like a blocked vent or cracked hose.

The bill to fix 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.

Trust the Experts at Aramendia Plumbing, Heating and Air, A Service Experts Company

If you need furnace repair, reach out to the professionals from Aramendia Plumbing, Heating and Air, A Service Experts Company to check out the fault code and fix the situation to your standards.

Call us at 210-404-4233 or schedule an appointment online today.