What It Means
- OD Low Suction Pressure Fault
Lennox Equipment not specified
Lennox Error Code 446
Equipment not specified:
Causes & actions from Lennox
How it shows
- iComfort S30 alert: 446
Priority condition: Service Soon/Service Urgent Suction pressure < 40 psig in operation. Error code initially will be a moderate and will escalate to critical and stop system operation. After 5-strikes during a single thermostat demand. Recommend replacement of low pressure switch.
Applicable models & manual sources
- iComfort S30
OD Low Suction Pressure Fault
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.
