What It Means
- OD MUC Unit Code To Inverter Model Mismatch
Lennox Equipment not specified
Lennox Error Code 443
Equipment not specified:
Causes & actions from Lennox
How it shows
- iComfort S30 alert: 443
Priority condition: Service Urgent The Lennox variable capacity unitary control (outdoor control) has incorrect appliance unit size code selected. • Check for proper configuring under unit size code used for outdoor unit (see unit configuration guide or in installation instructions). • If replacing inverter, verify inverter model matches unit size. • Remove the thermostat from the system while applying power and reprogramming.
Applicable models & manual sources
- iComfort S30
OD MUC Unit Code To Inverter Model Mismatch
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.
