Lennox Furnace Error Code 8 Flashes
Gas valve fault — the gas valve relay or solenoid is not functioning.
⚠️ Symptoms You'll Notice
- • No gas flow to burner
- • Furnace won't ignite
- • No heat
- • System won't start
What Causes Error Code 8?
🔧 DIY Troubleshooting Steps
- 1 Verify gas supply valve is fully ON
- 2 Listen for click from gas valve when heat is called
- 3 Check all electrical connections to valve
- 4 Reset furnace
📞 When to Call a Professional
Gas valve replacement is necessary.
Estimated repair cost in Albuquerque: $200–$400
Top Furnace Repair Contractors in Albuquerque
Vetted, reviewed, and ready to fix Lennox error code 8 · 34,721+ total reviews
Hi-Tech Heating and Cooling
AC Repair · Electrical · Heat Pump
BakerHouse Service - HVAC and Refrigeration
AC Installation · AC Repair · Commercial HVAC
EP Mechanical Technologies Inc.
AC Repair · Heating
Beyond Heating and Cooling Inc
AC Repair · Heating
Kidzz Mechanical
AC Repair · Boiler Service · Heating
Frequently Asked Questions
What does Lennox Furnace error code 8 mean? ▼
Gas valve fault — the gas valve relay or solenoid is not functioning.
How much does it cost to fix error code 8 in Albuquerque? ▼
Typical repair costs in Albuquerque for Lennox Furnace error code 8 range from $200–$400. Gas valve replacement is necessary.
Can I fix Lennox error code 8 myself? ▼
Some basic troubleshooting is safe to try: Verify gas supply valve is fully ON. Listen for click from gas valve when heat is called. Gas valve replacement is necessary.
Other Lennox Furnace Error Codes
Error Codes from Other Brands
Still Getting Error Code 8?
Get matched with a licensed Lennox furnace repair technician in Albuquerque — free, no obligation.
Get 3 Free Repair Quotes →