What It Means
- Pressure switch open during trial for ignition or run mode.
- SLP98UHV, SLP99UHV: Low pressure switch open during trial for ignition or run mode. Refer to troubleshooting in installation instruction.
Lennox Ducted Heating
Lennox Error Code E227
Ducted Heating
E227 means different things on different Ducted Heating models. Enter your model number to see only your reading, or find your model below.
Causes & actions from Lennox
Pressure switch open during trial for ignition or run mode.
24 models
EL180UHNE(K), EL195UHNEK, EL195UHNEK-01, EL195UHNEK-02, EL196UHEK, EL280UHE(X), EL280UHEK, EL280UHEK(X), EL296UHE, EL297UHEK, ML180UHVK, ML193DFEK, ML196UHEK, ML296UHVK, ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK, ML297UH135XV60DK, ML297UHVK, SL280DFNV, SL280UHV, SL297UHNV
Gas furnace (indoor)
How it shows
- Integrated control 7-segment display: E227
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. Resumes normal operation after fault is cleared.
Other manual wording (1 of 3)
EL280UHEK, EL280UHEK(X), EL297UHEK, ML296UHVK, ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK,…
Check pressure (inches w.c.) of low pressure switch clos- ing on heat call. Measure operating pressure (inches w.c.). Inspect vent and combustion air inducer for correct opera- tion and restriction. Resumes normal operation after fault is cleared.
Other manual wording (2 of 3)
SL280DFNV, SL280UHV, SL297UHNV
Check pressure (inches w.c.) of low pressure switch closing on heat call. Measure operating pressure (inch- es w.c.). Inspect vent and combustion air inducer for correct operation and restriction. Resumes normal op- eration after fault is cleared.
Other manual wording (3 of 3)
EL280UHE(X), EL296UHE
Check pressure (inches w.c.) of low pressure switch closing on heat call. Measure operating pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction. Resumes normal operation after fault is cleared.
Applicable models & manual sources
- EL180UHNE(K)
Pressure switch open during trial for ignition or run mode.
- EL195UHNEK
Pressure switch open during trial for ignition or run mode.
EL195UHNEK, EL195UHNEK-01, EL195UHNEK-02
- EL196UHEK
Pressure switch open during trial for ignition or run mode.
- ML180UHVK
Pressure switch open during trial for ignition or run mode.
- ML193DFEK
Pressure switch open during trial for ignition or run mode.
- ML196UHEK
Pressure switch open during trial for ignition or run mode.
- ML196UHEK
Pressure switch open during trial for ignition or run mode.
- EL280UHEK
Low pressure switch open during trial for ignition or run mode.
EL280UHEK, EL280UHEK(X)
- EL297UHEK
Low pressure switch open during trial for ignition or run mode.
- ML296UHVK
Low pressure switch open during trial for ignition or run mode.
- ML297UH045XV36BK
Low pressure switch open during trial for ignition or run mode.
ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK, ML297UH135XV60DK, ML297UHVK
- SL280DFNV
Low pressure switch open during trial for ignition or run mode.
- SL280UHV
Low pressure switch open during trial for ignition or run mode.
- SL297UHNV
Low pressure switch open during trial for ignition or run mode.
- EL280UHE(X)
Low pressure switch open during trial for ignition or run mode.
- EL296UHE
Low pressure switch open during trial for ignition or run mode.
Low pressure switch open during trial for ignition or run mode. Refer to troubleshooting in installation instruction.
Models: SLP98UHV, SLP99UHV
How it shows
- Integrated control 7-segment display: E227
Check inches of water column pressure during operation of low pressure switch on heat call, measure inches of water column of operating pressure, inspect vent and com- bustion air inducer for correct operation and restriction.
Other manual wording
SLP99UHV
Check inches of water column pressure during operation of low pressure switch on heat call, measure inches of water column of operating pressure, inspect vent and combustion air inducer for correct operation and restriction.
Applicable models & manual sources
- SLP98UHV
Low pressure switch open during trial for ignition or run mode. Refer to trouble- shooting in installation instruction.
- SLP99UHV
Low pressure switch open during trial for ignition or run mode. Refer to troubleshooting in installation instruction.
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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