What It Means
- Refrigerant Leak Detector #1 Communication lost or invalid sensor dip switch configuration (DISABLE/ENABLE)
Lennox Ducted Heating
Lennox Ducted Heating Error Code E154
Ducted Heating: Gas furnace (indoor)
Causes & actions from Lennox
How it shows
- Integrated control 7-segment display: E154
There may be an issue with the wiring harness connecting the sensor #1 to the furnace control board, either with the wiring itself or with the connector. Check the wiring and the connector for damage or improper connectivity. Check the sensor for damage or obstruction on the harness plug. This fault clears when communications with the sensor has been reestablished, but blower latches for a minimum of 5 minutes. Retest of the presence of fault can be effected by pressing the Low GWP test button on the furnace unit control board. This may also indicate incorrect Low GWP dip switch settings. Please refer to installation instructions.
Other manual wording
EL280UHEK, EL280UHEK(X), EL297UHEK, ML296UHVK, ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK,…
There may be an issue with the wiring harness connecting the sen- sor #1 to the furnace control board, either with the wiring itself or with the connector. Check the wiring and connector for damage or improper connectivity. Check the sensor for damage or obstruction on the harness plug. This fault clears when communicati9ons with the senor has been reestablished, but blower latches for a minimum 5 minutes. Retest of the presence of fault can be effected by press- ing the LOW GWP test button on the furnace unit control board. This may also indicate incorrect LOW GWP dip switch settings. See installation instructions
Applicable models & manual sources
- EL180UHNE(K)
Refrigerant Leak Detector Sensor #1 Communication lost or invalid sensor dip switch configuration (Disable/Enable)
- EL195UHNEK
Refrigerant Leak Detector Sensor #1 Communication lost or invalid sensor dip switch configuration (Disable/Enable)
EL195UHNEK, EL195UHNEK-01, EL195UHNEK-02
- EL196UHEK
Refrigerant Leak Detector Sensor #1 Communication lost or invalid sensor dip switch configuration (Disable/Enable)
- ML180UHVK
Refrigerant Leak Detector Sensor #1 Communication lost or invalid sensor dip switch configuration (Disable/Enable)
- ML193DFEK
Refrigerant Leak Detector Sensor #1 Communication lost or invalid sensor dip switch configuration (Disable/Enable)
- ML196UHEK
Refrigerant Leak Detector Sensor #1 Communication lost or invalid sensor dip switch configuration (Disable/Enable)
- ML196UHEK
Refrigerant Leak Detector Sensor #1 Communication lost or invalid sensor dip switch configuration (Disable/Enable)
- EL280UHEK
Refrigerant Leak Detector #1 Commu- nication lost or invalid sensor dip switch configuration (Disable/Enable)
EL280UHEK, EL280UHEK(X)
- EL297UHEK
Refrigerant Leak Detector #1 Commu- nication lost or invalid sensor dip switch configuration (DISABLE/ENABLE)
- ML296UHVK
Refrigerant Leak Detector #1 Commu- nication lost or invalid sensor dip switch configuration (Disable/Enable))
- ML297UH045XV36BK
Refrigerant Leak Detector #1 Commu- nication lost or invalid sensor dip switch configuration (Disable/Enable))
ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK, ML297UH135XV60DK, ML297UHVK
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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