What It Means
- Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
Lennox Ducted Heating
Lennox Error Code E272
Ducted Heating: Gas furnace (indoor)
Causes & actions from Lennox
How it shows
- Integrated control 7-segment display: E272
Check operation of low pressure switch to see if it is stuck closed on heat call. Check pressure (inches w.c.) of high pressure switch closing on heat call. Measure operating pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction. Clears when heat call finishes successfully.
Other manual wording (1 of 3)
EL180UHNE(K), EL196UHEK, ML193DFEK, ML196UHEK
Check operation of low pressure switch to see if it is stuck closed on heat call. Check pressure (inches w.c.) of pressure switch closing on heat call. Measure operating pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction. Clears when heat call finishes successfully.
Other manual wording (2 of 3)
EL195UHNEK, EL195UHNEK-01, EL195UHNEK-02, ML180UHVK
Check operation of pressure switch to see if it is stuck closed on heat call. Check pressure (inches w.c.) of pressure switch closing on heat call. Measure operating pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction. Clears when heat call finishes successfully.
Other manual wording (3 of 3)
SLP98UHV, SLP99UHV
See E 223 and E 225.
Applicable models & manual sources
- EL280UHE(X)
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
- EL280UHEK
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to the pressure switch opening.
EL280UHEK, EL280UHEK(X)
- EL296UHE
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
- EL297UHEK
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to the pressure switch opening.
- ML296UHVK
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to the pressure switch opening.
- ML297UH045XV36BK
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to the pressure switch opening.
ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK, ML297UH135XV60DK, ML297UHVK
- SL280DFNV
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to the pressure switch opening.
- SL280UHV
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to the pressure switch opening.
- SL297UHNV
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to the pressure switch opening.
- EL180UHNE(K)
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
- EL196UHEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
- ML193DFEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
- ML196UHEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
- ML196UHEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
- EL195UHNEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
EL195UHNEK, EL195UHNEK-01, EL195UHNEK-02
- ML180UHVK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
- SLP98UHV
Soft lockout − Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
- SLP99UHV
Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure switch opening.
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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