Financing Available | 12 Months & No Interest

Mail us on

Decoding Furnace Error Codes: Troubleshooting Your Heating System

Book Your Appointment Now!

To book your next HVAC appointment with us, simply fill out the form below and we’ll contact you shortly. Alternatively, you can call the numbers listed on our website.

A well-functioning heating system is essential for keeping your home warm and cozy during the chilly months. However, from time to time, you may encounter error codes on your furnace, indicating potential issues that need attention. In this comprehensive guide, we’ll delve into various furnace error codes, what they mean, and how to address them. Plus, we’ll introduce you to ROMA Heating & Cooling, your trusted HVAC partner in British Columbia.

Understanding Furnace Error Codes

Furnace error codes are like secret messages from your heating system, designed to help you identify problems quickly. Each code corresponds to a specific issue, making it easier for homeowners and technicians to diagnose and resolve problems. Let’s explore some common furnace error codes from reputable brands like Trane, Navien, Goodman, Bryant, and more:

  • Trane E04 Error Code: The E04 code on a Trane furnace may indicate an issue with the open high-temperature limit circuit. This problem requires professional attention to ensure the safety and proper functioning of your heating system.
  • Navien E110: Navien tankless water heaters often display the E110 error code when there is a problem with the exhaust gas sensor. It’s crucial to have a Navien-certified technician diagnose and repair this issue.
  • Trane IDL Code: If your Trane furnace displays the IDL code, it may be signaling a pressure switch fault. This could be due to various factors, and a qualified technician should investigate the root cause.
  • Trane COF Code: The COF code on a Trane furnace typically indicates a combustion air proving switch fault. Prompt attention to this issue is essential to ensure safe furnace operation.
  • 1DL Error Code: Error codes like 1DL are specific to certain furnace models and brands. These codes may represent issues such as flame rollout switch problems or other safety concerns. Professional diagnosis is crucial.
  • Goodman F04 Error Code: The F04 code on a Goodman furnace suggests an issue with the open rollout switch. Safety is paramount, so it’s essential to address this problem promptly.
  • Trane Error Code 184.08: Code 184.08 from Trane may point to communication problems between components. A professional technician should inspect and resolve this issue.
  • 7P1 Error Code (Trane and Goodman): Both Trane and Goodman furnaces may display the 7P1 code, which can indicate various issues, including problems with the flame rollout switch, flame sensor, or other safety components.
  • ICP Furnace Error Codes: International Comfort Products (ICP) furnaces may have unique error codes that help identify specific problems. These codes require careful interpretation by a qualified technician.
  • Bryant Furnace LED Blinking 3 Times: When a Bryant furnace’s LED blinks three times, it could signal a pressure switch issue, draft inducer motor problem, or other issues. Professional diagnosis is necessary to determine the exact cause.

Your Trusted HVAC Partner: ROMA Heating & Cooling

Navigating furnace error codes can be daunting, but you don’t have to face heating system issues alone. ROMA Heating & Cooling is your reliable HVAC service provider in British Columbia, specializing in diagnosing and resolving furnace problems.

Our team of certified technicians is well-versed in handling a wide range of furnace brands and models, including Trane, Navien, Goodman, Bryant, and more. We understand the intricacies of furnace error codes, ensuring accurate troubleshooting and timely repairs.

When you encounter furnace error codes or face heating system challenges, don’t hesitate to contact ROMA Heating & Cooling. We’re available at (604) 704-0300 or via email at to provide expert HVAC services tailored to your needs. We are committed to keeping your home warm, comfortable, and safe.


Furnace error codes are valuable diagnostic tools that help identify and address issues with your heating system. While understanding these codes is essential, it’s equally important to rely on the expertise of certified HVAC professionals like ROMA Heating & Cooling for accurate diagnosis and safe, effective repairs. Trust us to keep your home warm and your furnace operating at its best.

Book Your Appointment Now! 📅

To book your next HVAC appointment with us, simply fill out the form below and we’ll contact you shortly. Alternatively, you can call the numbers listed on our website.

How can we help you ?
By submitting this form, I agree to the terms and conditions.