Fixing Error Code 228 on Your Lennox® Furnace

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

This indicates your HVAC equipment couldn’t adjust its pressure switch before turning on. 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 in San Antonio. Our NATE-certified technicians are among the best in the industry. They’re well-prepared 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 occurs after your thermostat’s call for heat:

  • Your furnace’s control board begins 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 provides heat.

What Happens When a Pressure Switch Fails

When your pressure switch isn’t working 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 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 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 Expert will look at other parts of your furnace first. A handful of other issues can also generate the error code, like a clogged 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.

Count on the Experts at Aramendia Plumbing, Heating and Air

If you require furnace repair, reach out to the technicians from Aramendia Plumbing, Heating and Air to check out the fault code and fix the situation to your satisfaction.

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