What It Means
- Suction pressure transducer fault.
Lennox Split & Multi-Split
Lennox Split & Multi-Split Error Code E181
Split & Multi-Split: Air conditioner (outdoor), Heat pump (outdoor)
Causes & actions from Lennox
How it shows
- Outdoor control 7-segment display: E181
Suction pressure transducer is out of range. The signal should be between 0.5 VDC and 4.5 VDC between blue and black. The error code will be cleared when proper signal is provided.
Other manual wording
EL18XPV, EL18XPV-024, EL18XPV-036, EL18XPV-048, EL18XPV-060, EL19KPV, EL19KPV-024, EL19KPV-036, EL19KPV-048, EL19KPV-060, EL21KLV,…
Suction pressure transducer is out of range. The signal should be between 0.5 VDC and 4.5 VDC between blue and black. The error code will be cleared when proper signal is provided. System controlled by a conventional 24VAC heat pump thermostat will operate in the staged mode.
Applicable models & manual sources
- EL18XCV
Suction pressure transducer fault.
EL18XCV, EL18XCV-024, EL18XCV-036, EL18XCV-048, EL18XCV-060
- EL22KCV
Suction pressure transducer fault.
EL22KCV, EL22KCV-024, EL22KCV-036, EL22KCV-048, EL22KCV-060
- SL25KCV
Suction pressure transducer fault.
SL25KCV, SL25KCV-024, SL25KCV-036, SL25KCV-048, SL25KCV-060
- SL28XCV
Suction pressure transducer fault.
SL28XCV, SL28XCV-024, SL28XCV-036, SL28XCV-048, SL28XCV-060
- EL18XPV
Suction pressure transducer fault.
EL18XPV, EL18XPV-024, EL18XPV-036, EL18XPV-048, EL18XPV-060
- EL19KPV
Suction pressure transducer fault.
EL19KPV, EL19KPV-024, EL19KPV-036, EL19KPV-048, EL19KPV-060
- EL21KLV
Suction pressure transducer fault.
EL21KLV, EL21KLV-024, EL21KLV-036, EL21KLV-048, EL21KLV-060
- SL22KLV
Suction pressure transducer fault.
SL22KLV, SL22KLV-024, SL22KLV-036, SL22KLV-048, SL22KLV-060
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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