What It Means
- Flame sensed without gas valve energized.
Lennox Ducted Heating
Lennox Error Code SLOW FLASH, OFF
Ducted Heating:
Causes & actions from Lennox
How it shows
- SureLight board LEDs (DS1/DS2): SLOW FLASH, OFF (led1: flashing (slow), led2: off)
- SureLight board LEDs (DS1/DS2): SLOW FLASH, OFF (led1: flashing (slow), led2: off)
- SureLight board LEDs (DS1/DS2): SLOW FLASH, OFF (led1: flashing (slow), led2: off)
This manual entry does not list further causes or actions.
Applicable models & manual sources
- G43UF
Flame sensed without gas valve energized.
- G43UF
Flame sensed without gas valve energized.
- G43UF
Flame sensed without gas valve 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.
