What It Means
- Limit switch circuit open.
- SLP98UHV, SLP99UHV: Limit switch circuit open - Refer to troubleshooting in installation instruction.
Lennox Ducted Heating
Lennox Error Code E250
Ducted Heating
E250 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
Limit switch circuit open.
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: E250
Check for proper firing rate on furnace. Ensure there is no blockage in heater. Check for proper air flow. If limit not closed within 3 minutes, unit will go into 1-hour soft lockout. Resumes normal operation after fault is cleared.
Applicable models & manual sources
- EL180UHNE(K)
Limit switch circuit open.
- EL195UHNEK
Limit switch circuit open.
EL195UHNEK, EL195UHNEK-01, EL195UHNEK-02
- EL196UHEK
Limit switch circuit open.
- EL280UHE(X)
Limit switch circuit open.
- EL280UHEK
Limit switch circuit open.
EL280UHEK, EL280UHEK(X)
- EL296UHE
Limit switch circuit open.
- EL297UHEK
Limit switch circuit open.
- ML180UHVK
Limit switch circuit open.
- ML193DFEK
Limit switch circuit open.
- ML196UHEK
Limit switch circuit open.
- ML196UHEK
Limit switch circuit open.
- ML296UHVK
Limit switch circuit open.
- ML297UH045XV36BK
Limit switch circuit open.
ML297UH045XV36BK, ML297UH070XV36BK, ML297UH090XV36CK, ML297UH090XV60CK, ML297UH110XV60CK, ML297UH135XV60DK, ML297UHVK
- SL280DFNV
Limit switch circuit open.
- SL280UHV
Limit switch circuit open.
- SL297UHNV
Limit switch circuit open.
Limit switch circuit open - Refer to troubleshooting in installation instruction.
Models: SLP98UHV, SLP99UHV
How it shows
- Integrated control 7-segment display: E250
Check why limit is tripping, overfired, low air flow.
Applicable models & manual sources
- SLP98UHV
Limit switch circuit open − Refer to troubleshooting in installation instruc- tion.
- SLP99UHV
Limit switch circuit open - 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.
What should you check next?
Continue in ACLogics with guided diagnosis for your equipment and symptoms.
