What It Means
- Limit Switch open or opened multiple times during one heating demand
Lennox Packaged Unit
Lennox Packaged Unit Error Code 2 Flashes
Packaged Unit: Packaged HVAC (outdoor)
Causes & actions from Lennox
How it shows
- dsi ignition heartbeat led: 2 Flashes
This manual entry does not list further causes or actions.
Applicable models & manual sources
- LDT078
Limit Switch open or opened multiple times during one heating demand
LDT078, LDT092, LDT102, LDT120, LDT152
- LGM156U
Limit Switch open or opened multiple times during one heating demand
LGM156U, LGM180U, LGM210U, LGM240U, LGM300U
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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