Getting cold because you’re noticing error code 223 from your Lennox® furnace?
This is telling you your furnace’s low pressure switch is open. Due to the issue, your system will not work for your safety.
Turn to the Experts at Rob's Albertan Service Experts to take care of mending this furnace error. Our NATE-certified technicians are among the brightest in the industry when it comes to understanding and repairing furnace issues.
Your satisfaction is important to our business. That’s why we back our furnace repair work in Edmonton with a 100% Satisfaction Guarantee* for a year.
How a Low Pressure Switch Works
Pressure switches are a necessary part of the heating process.
Here’s how your furnace starts after the thermostat initiates the call for heat:
- Your furnace’s control board begins the draft inducer blower motor. This pushes out combustion gases from the heat exchanger and brings in new gas and air so the burners can fire.
- When the pressure switch senses that sufficient air is being brought into the burners, it closes and triggers the control board to ignite the furnace.
- Your furnace ignites and heats your space.
A two-stage furnace has a few pressure switches, which allow it to run at multiple speeds—and be more efficient.
What Happens When a Low Pressure Switch Malfunctions
The low pressure switch may be open for a couple reasons.
There could be a:
- Blocked vent
- Stopped condensate drain
- Cracked hose
There could also be a problem with the switch itself, the inducer or the circuit board.
Your furnace will show you there’s an issue with a red flash from its indicator light, which it uses to display error codes. It has this red light to flash code, like Morse code.
You might observe fast flashes or an alternating slow flash as it reiterates a fault code.
Estimated Repair Cost for Furnace Error Code 223
The price to fix your furnace depends on the root problem and the hours it takes to repair it.
Here are expected replacement costs for several components that could be affected:
- Pressure switch—$40 to $350
- Inducer—$600 to $1,500
- Circuit board—$200 to $600
Call the Experts at Rob's Albertan Service Experts
When you need furnace service, you can trust the professionals at Rob's Albertan Service Experts to take care of the fault code and get your heat working again.
Call us at 780-800-9047 or schedule an appointment online today.