What It Means
- Global network connection error. This usually indicates there is a short or overladed resistance is to low) condition between communicating indoor and thermostat units.
Lennox Split & Multi-Split
Lennox Split & Multi-Split Error Code E331
Split & Multi-Split: Air handler (indoor)
Causes & actions from Lennox
How it shows
- Single-character display: E331
Global network connection error. This usually indicates there is a short or overladed resistance is to low) condition between communicating indoor and thermostat units.
Applicable models & manual sources
- CBX40UHV
Global network connection error. This usually indicates there is a short or overladed resistance is to low) condition between com- municating indoor and thermostat units.
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.
