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Furnace Error Codes Explained (Carrier, Lennox, Goodman) for Calgary Homes in 2026

Furnace error code flashing lights on furnace control board

Key Takeaways

Furnace error codes are crucial for Calgary homeowners to quickly identify heating issues and maintain safety during long winters. Understanding what each code means helps prevent costly repairs, ensures consistent home comfort, and keeps furnaces running efficiently.

What's covered in this article?

Calgary winters require dependable heating, and furnaces are central to home comfort. Furnace error codes alert homeowners to potential problems early, helping prevent damage, enhance safety, and allow HVAC technicians to diagnose and repair issues quickly.

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Common Furnace Error Codes for Carrier, Lennox, and Goodman

Furnace Error code

Each furnace brand displays error codes differently. Knowing the most common codes and their meanings can save time and money, especially in Calgary’s cold climate where heating interruptions can be costly.

Carrier Furnace Error Codes

Carrier furnaces use flashing LED lights to indicate operational issues. Common codes include:

  • 01 – Pressure Switch Error: Indicates a blocked vent, faulty pressure switch, or airflow issue. Repairs in Calgary generally cost CAD $200–$700.
  • 03 – Limit Switch Tripped: The furnace has overheated; could be due to restricted airflow or a dirty filter. Typical repair costs in Calgary: CAD $200–$700.
  • 08 – Ignition Failure: Furnace failed to ignite; may require cleaning or replacing the ignitor or flame sensor. Local repairs cost CAD $200–$700.

Lennox Furnace Error Codes

Lennox furnaces use LED indicators and control board codes. Common errors include:

  • E0 – Flame Rollout: Flame detected outside the burner area, potentially caused by blocked venting or dirty burners. Calgary repairs usually range CAD $250–$900.
  • E1 – Ignition Failure: Furnace did not ignite properly; may involve the ignitor or control board. Repair costs in Calgary: CAD $250–$900.
  • E6 – Pressure Switch Issue: Indicates venting or airflow problems affecting pressure. Typical Calgary repair costs: CAD $250–$900.

Goodman Furnace Error Codes

Goodman furnaces display error codes via flashing LEDs or control board indicators. Frequent codes include:

  • 1 Blink – Pressure Switch Fault: Signals airflow restrictions or blocked vent. Repairs in Calgary generally cost CAD $200–$800.
  • 2 Blinks – Flame Sensor Error: Flame sensor needs cleaning or replacement. Local repair costs range CAD $200–$800.
  • 5 Blinks – Inducer Motor Fault: The inducer motor is malfunctioning or blocked; may require repair or replacement. Calgary costs: CAD $200–$800.

How to Respond to Furnace Error Codes in Calgary

Comfort Union Technician Fixing the Furnace in Calgary

Immediate action can reduce downtime and repair costs while keeping your home safe.

1. Resetting the Furnace

Many minor errors can be cleared by safely resetting the furnace. Only reset when it is safe to do so, and avoid repeated attempts if the code persists.

2. Basic Troubleshooting

Homeowners can check power supply, thermostat settings, filters, and venting before calling a technician. Simple fixes often prevent unnecessary service calls.

3. When to Call a Calgary HVAC Technician

If error codes continue after a reset or if the furnace shows safety lockouts, it’s time to call a certified technician. Calgary service calls typically cost CAD $150–$250 for diagnostics and CAD $200–$900 for repairs. Homeowners can review our Furnace Repair Calgary services for professional support.

Cost Considerations for Furnace Repairs and Error Code Resolution

Repair costs vary based on the brand, parts, and labor. Understanding typical costs helps Calgary homeowners plan maintenance or replacement.

Brand

Typical Repair Cost (CAD)

Carrier

$200–$700

Lennox

$250–$900

Goodman

$200–$800

Repeated error codes may indicate that replacement is more cost-effective. For guidance, see our Repair or Replace My Furnace guide.

Preventing Furnace Error Codes in Calgary

Proactive maintenance is key to reducing furnace errors and maintaining efficiency. Annual tune-ups through Furnace Tune-Up & Maintenance Calgary help keep components in top condition. Regular filter changes, airflow checks, and inspection of venting and gas lines also prevent common error codes.

Frequently Asked Questions

What do the flashing lights on my furnace mean?

They indicate error codes that help identify operational issues or safety lockouts. Specific patterns vary by Carrier, Lennox, or Goodman models.

Minor resets and filter changes are safe; anything involving gas lines or control boards requires a certified Calgary HVAC technician.

Typical repair costs range from CAD $200–$900 depending on the brand, issue severity, and parts required.

Not directly, but ignoring repeated codes can lead to further damage and reduce the efficiency and life of your system.

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