Not getting 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 technicians at San Antonio Air Service Experts in San Antonio. Our ACE-certified technicians are among the elite in the industry. They’re well-qualified to handle all of your heating needs, including fixing a furnace error.
We want you to be completely satisfied with our quality furnace repair* 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 goes on after your thermostat’s call for heat:
- Your furnace’s control board starts running the draft inducer blower motor. This pushes out 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 supplies heat.
What Happens When a Pressure Switch Fails
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 working 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 present 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 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.
Start with the Experts at San Antonio Air Service Experts
If you should have furnace repair, trust the pros from San Antonio Air Service Experts to understand the fault code and fix the issue to your satisfaction.
Call us at 210-570-9705 or schedule an appointment online today.