What It Means
- AH Electric Heat Stage 3 Fault
Lennox Equipment not specified
Lennox Error Code 353
Equipment not specified:
Causes & actions from Lennox
How it shows
- iComfort S30 alert: 353
Priority condition: Service Soon There is a issue with the air handler’s third stage electric heat. Either the pilot relay contacts did not close or the relay coil in the electric heat section did not energize. NOTE: The air-handler will operate on first stage electric heat until the issue is resolved.
Applicable models & manual sources
- iComfort S30
AH Electric Heat Stage 3 Fault
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.
