What It Means
- LF24, TUA*S(N,L)(A,S)F: Ignition control failure
- G24M: Control Failure
Lennox Ducted Heating
Lennox Ducted Heating Error Code Steady On
Ducted Heating
Steady On means different things on different Ducted Heating models. Enter your model number to see only your reading, or find your model below.
Causes & actions from Lennox
Ignition control failure
Models: LF24, TUA*S(N,L)(A,S)F
Unit heater (indoor)
How it shows
- integrated control single led: Steady On
This manual entry does not list further causes or actions.
Applicable models & manual sources
- LF24
Ignition control failure
- TUA*S(N,L)(A,S)F
Ignition control failure
Control Failure
Models: G24M
How it shows
- a3 diagnostic led: Steady On
Replace Control
Applicable models & manual sources
- G24M
Control Failure
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.
