What It Means
- Restricted airflow - Indoor blower motor is running at a reduced CFM (cutback mode **)
Lennox Split & Multi-Split
Lennox Split & Multi-Split Error Code E312
Split & Multi-Split: Air handler (indoor)
Causes & actions from Lennox
How it shows
- Single-character display: E312
Restricted airflow — Indoor blower motor is running at a reduced CFM (cutback mode **). ** Cutback Mode — The variable speed motor has pre-set speed and torque limiters to protect the motor from damage caused by operating out of its designed parameters (0 through 0.80 in. w.g. total external static pressure).
Applicable models & manual sources
- CBX40UHV
Restricted airflow — Indoor blower motor is running at a reduced CFM (cutback mode **)
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.
