What It Means
- Simultaneous flashing.
Lennox Split & Multi-Split
Lennox Error Code Red and Yellow LED
Split & Multi-Split:
Causes & actions from Lennox
How it shows
- lsom trip alert led: Red and Yellow LED (alert: flashing, trip: flashing)
Indicates that the control circuit voltage is too low for operation. Verify R and C terminals are supplied with 19−28VAC.
Applicable models & manual sources
- XP19
Simultaneous flashing.
- XP19
Simultaneous flashing.
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.
