What It Means
- Normal operation
Lennox Split & Multi-Split
Lennox Error Code ON / ON / Off
Split & Multi-Split: Mini-split unit (outdoor)
Causes & actions from Lennox
How it shows
- corp1816 single zone led 018 030: ON / ON / Off
Normal operation (Main Control Blue or Yellow LED: ON; IPM Control Red LED: ON, Green LED: Off)
Applicable models & manual sources
- MPA
Normal operation
MPA, MPB, MLA
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.
