What It Means
- Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
Lennox Ducted Heating
Lennox Error Code E273
Ducted Heating: Gas furnace (indoor)
Causes & actions from Lennox
How it shows
- Integrated control 7-segment display: E273
Check micro-amperes of flame sensor using control diagnostics or field-installed mode. Clean or replace sensor. Measure voltage of neutral to ground to ensure good unit ground. Clears when heat call finishes successfully.
Other manual wording (1 of 2)
EL280UHEK, EL280UHEK(X), EL297UHEK, ML296UHVK, ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK,…
Check micro-amperes of flame sensor using control diag- nostics or field-installed mode. Clean or replace sensor. Measure voltage of neutral to ground to ensure good unit ground. Clears when heat call finishes successfully.
Other manual wording (2 of 2)
SLP98UHV, SLP99UHV
See E 240.
Applicable models & manual sources
- EL180UHNE(K)
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
- EL195UHNEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
EL195UHNEK, EL195UHNEK-01, EL195UHNEK-02
- EL196UHEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
- EL280UHE(X)
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
- EL296UHE
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
- ML180UHVK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
- ML193DFEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
- ML196UHEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
- ML196UHEK
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
- EL280UHEK
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to flame failure.
EL280UHEK, EL280UHEK(X)
- EL297UHEK
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to flame failure.
- ML296UHVK
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to flame failure.
- ML297UH045XV36BK
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to flame failure.
ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK, ML297UH135XV60DK, ML297UHVK
- SL280DFNV
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to flame failure.
- SL280UHV
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to flame failure.
- SL297UHNV
Soft lockout - Exceeded maximum number of re- cycles. Last recycle due to flame failure.
- SLP98UHV
Soft lockout − Exceeded maximum number of recycles. Last recycle due to flame failure.
- SLP99UHV
Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.
What should you check next?
Continue in ACLogics with guided diagnosis for your equipment and symptoms.
