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