What It Means
- OD Open High Pressure Switch
Lennox Equipment not specified
Lennox Error Code 412
Equipment not specified:
Causes & actions from Lennox
How it shows
- iComfort S30 alert: 412
Priority condition: Information Only-Dealer The unit high pressure is above the upper limit. • System will shut down. • Confirm that the system is properly charged with refrigerant. • Check condenser fan motor, expansion valve (if installed), indoor unit blower motor, stuck reversing valve or clogged refrigerant filter. • Confirm that the outdoor unit is clean.
Applicable models & manual sources
- iComfort S30
OD Open High Pressure Switch
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.
