Getting chilly because you’re getting 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 run for safety reasons.
Depend on the Experts at Matz-Rightway to deal with repairing this furnace error. Our ACE-certified technicians are among the brightest in the industry when it comes to diagnosing and repairing furnace troubles.
Your satisfaction is essential to our team. That’s why we back our furnace repair* for a year.
How a Low Pressure Switch Works
Pressure switches are an essential part of the heating process.
Here’s how your furnace acts after the thermostat initiates the call for heat:
- Your furnace’s control board begins the draft inducer blower motor. This exhausts combustion gases from the heat exchanger and brings in new gas and air so the burners can start.
- When the pressure switch senses that enough 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 help it to run at different speeds—and use less energy.
What Happens When a Low Pressure Switch Acts Up
The low pressure switch may be open for a couple reasons.
There could be a:
- Closed off vent
- Stopped condensate drain
- Cracked hose
There could also be trouble 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 notice fast flashes or an alternating slow flash as it reiterates a fault code.
Estimated Repair Cost for Furnace Error Code 223
The expense to fix your furnace depends on what’s wrong with it 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 Matz-Rightway
When you have to have furnace service, you can lean on the professionals at Matz-Rightway to handle the fault code and get your heat flowing again.
Call us at 631-406-9220 or schedule an appointment online today.