What It Means
- OD EIM W Output Hardware Fault
Lennox Equipment not specified
Lennox Error Code 418
Equipment not specified:
Causes & actions from Lennox
How it shows
- iComfort S30 alert: 418
Priority condition: Service Soon There is a faulty W output circuit. • W terminal is energized while in cooling mode. • Possible cause may be a stuck closed relay on the control, or something external to the control that is energizing W terminal when it should not be energized. • Disconnect any wiring from the W terminal. • If 24VAC is still present on the terminal, then it is a stuck relay. • If 24VAC disappears, then there is a need to check any of the wires hooked up to the W terminal.
Applicable models & manual sources
- iComfort S30
OD EIM W Output Hardware 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.
