What It Means
- Control hardware fault detected.
- Flame sensed and gas valve not energize
Lennox Packaged Unit
Lennox Packaged Unit Error Code 5 Flashes
Packaged Unit
5 Flashes means different things on different Packaged Unit models. Enter your model number to see only your reading, or find your model below.
Causes & actions from Lennox
Control hardware fault detected.
8 models
LGM036, LGM048, LGM060, LGM074, LGT036, LGT048, LGT060, LGT072
Packaged HVAC (indoor)
How it shows
- dsi ignition heartbeat led: 5 Flashes
This manual entry does not list further causes or actions.
Applicable models & manual sources
- LGM036
Control hardware fault detected.
LGM036, LGM048, LGM060, LGM074
- LGT036
Control hardware fault detected.
LGT036, LGT048, LGT060, LGT072
Flame sensed and gas valve not energize
10 models
LDT078, LDT092, LDT102, LDT120, LDT152, LGM156U, LGM180U, LGM210U, LGM240U, LGM300U
Packaged HVAC (outdoor)
How it shows
- dsi ignition heartbeat led: 5 Flashes
This manual entry does not list further causes or actions.
Applicable models & manual sources
- LDT078
Flame sensed and gas valve not energize
LDT078, LDT092, LDT102, LDT120, LDT152
- LGM156U
Flame sensed and gas valve not energize
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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