What It Means
- Control is in pump prime mode or Reset button currently held for 15+ seconds.
Lennox Ducted Heating
Lennox Error Code Yellow ON
Ducted Heating: Oil furnace (indoor)
Causes & actions from Lennox
How it shows
- oil burner yellow led: Yellow ON (yellow: on)
This manual entry does not list further causes or actions.
Applicable models & manual sources
- SLO185UFV
Control is in pump prime mode or Reset button currently held for 15+ seconds.
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.
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