What It Means
- Flame Sensed and Gas Valve Not Energized.
Lennox Ducted Heating
Lennox Error Code Five Flashes
Ducted Heating:
Causes & actions from Lennox
How it shows
- a3 diagnostic led: Five Flashes
Check Gas Valve. If OK, Check Flame Sensor.
Applicable models & manual sources
- G24M
Flame Sensed and Gas Valve Not Energized.
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.
What should you check next?
Continue in ACLogics with guided diagnosis for your equipment and symptoms.
