Terms of Use & Safety Disclaimer

Last updated: October 30, 2026

⚠️ Life-Safety Notice: Gas furnaces involve combustible fuel, carbon monoxide, and 120V/240V electricity. Information on this site is general educational reference only and is not a certified inspection or professional advice. Shut off the electrical disconnect and manual gas valve before removing panels. Never bypass or jumper a limit, rollout or pressure safety switch. Keep working carbon monoxide alarms on every level of your home. If you smell gas or a CO alarm sounds, leave the building and call your gas utility or 911.

1. Acceptance

By using furnaceblinkcode.com you agree to these terms. If you do not agree, do not use the site.

2. Informational use only

Fault meanings, root-cause rankings, multimeter values and cost estimates are compiled from published manufacturer literature and general field experience. Equipment varies by model and production date and manufacturers change control boards. Always confirm against the wiring diagram and decal in your own furnace and your owner's manual.

3. No warranty; limitation of liability

The site and any downloadable products are provided "as is" without warranties of any kind. To the maximum extent permitted by law, Real Tech Ventures LLC is not liable for any injury, property damage, or loss arising from use of, or reliance on, the site or its products. You assume all risk for any work you perform on your equipment.

4. Digital products

The Field Pack is a digital PDF for personal use. Do not redistribute or resell it. Because it is delivered digitally, refund requests are handled case by case — contact us within 14 days of purchase if there is a problem.

5. Third-party links, ads and trademarks

We link to third-party retailers and display third-party advertising. We are not responsible for their content or practices. Carrier, Bryant, Payne, Goodman, Amana, Daikin, Trane, American Standard, Lennox, Rheem, Ruud, York, Coleman, Luxaire, Evcon, Nordyne, Intertherm, Miller and other brand names are trademarks of their respective owners and are used only to identify compatible equipment. We are not affiliated with or endorsed by them.

6. Changes

We may update these terms at any time by posting a revised version here.

7. Contact

Questions? See our contact page.