Fixing Error Code 228 on Your Lennox® Furnace

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

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

Repairing or replacing this part is best left to the Experts at Service Experts Heating, Air Conditioning & Plumbing  in the U.S.. Our ACE-certified technicians are among the best in the industry. They’re well-prepared to take care of all of your heating needs, including repairing a furnace error.

We want you to be absolutely satisfied with our quality furnace repair* for a year.

How a Pressure Switch Works

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

Here’s what happens 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 sufficient 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 Malfunctions

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

Your furnace will show you something is wrong 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 transmits a fault code.

Estimated Repair Cost for Furnace Error Code 228

Before replacing the switch, your Service Experts Heating, Air Conditioning & Plumbing  tech 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 anticipate to pay between $40 to $350.

Start with the Experts at Service Experts Heating, Air Conditioning & Plumbing

If you require furnace repair, reach out to the pros from Service Experts Heating, Air Conditioning & Plumbing  to diagnose the fault code and fix the issue to your satisfaction.

Call us at  or schedule an appointment online today.

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