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Carrier Error Code 22: Abnormal Flame

⚠️ A Carrier 22 error code indicates an abnormal flame, which could mean a gas leak or carbon monoxide risk. Shut down the unit immediately.

How to Fix Carrier Code 22

  1. Step 1: Shut off the unit immediately at the breaker.
  2. Step 2: If you smell gas, evacuate your home and call the gas company from a safe location.
  3. Step 3: Contact a qualified HVAC technician to inspect and repair the system.
Type: led blink pattern Display: sight glass

What Does Carrier Error Code 22 Mean?

The Carrier 22 error code, often displayed as a blinking LED pattern on your furnace or HVAC system, signals that the system has detected an abnormal flame during operation. This could mean the flame is unstable, weak, or present when it shouldn't be. This is a serious issue because it could indicate a problem with gas combustion, potentially leading to a gas leak or carbon monoxide buildup. When this error occurs, the system typically shuts down as a safety precaution. Do not attempt to restart the system until the problem has been diagnosed and repaired by a qualified HVAC technician. Ignoring this error could lead to dangerous conditions in your home.

Common Causes of Carrier Code 22

  • Dirty or faulty flame sensor
  • Gas valve malfunction
  • Combustion air blockage
  • Cracked heat exchanger
  • Incorrect gas pressure

Applicable Carrier Models

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Need a Pro to Fix Carrier Code 22?

This error requires immediate attention from a licensed HVAC technician. Do not attempt repair yourself.

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Replacement Parts for Carrier Furnace Code 22

Flame Sensor OEM: KH42LZ010
Gas Valve OEM: EF32CW175
Ignition Control Board