What It Means
- Discharge temperaure too low
Lennox Split & Multi-Split
Lennox Error Code E186
Split & Multi-Split: Heat pump (outdoor)
Causes & actions from Lennox
How it shows
- Outdoor control 7-segment display: E186
Discharge temperature reading too low. Heat pump heating operation can continue. Check discharge temperature sensor location and verify the sensor is secure on the discharge line.
Applicable models & manual sources
- EL21KLV
Discharge temperaure too low
EL21KLV, EL21KLV-024, EL21KLV-036, EL21KLV-048, EL21KLV-060
- EL21KLV
Discharge temperaure too low
EL21KLV, EL21KLV-024, EL21KLV-036, EL21KLV-048, EL21KLV-060
- SL22KLV
Discharge temperaure too low
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.
What should you check next?
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