What It Means
- Thermostat demand exists but no current tocompressor detected.
Lennox Split & Multi-Split
Lennox Error Code RED ON
Split & Multi-Split:
Causes & actions from Lennox
How it shows
- lsom trip led: RED ON (trip: on)
Indicates there is a demand signal from the thermostat but no current to the compressor is detected by the module.
Applicable models & manual sources
- XC15
Thermostat demand exists but no current tocompressor detected.
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.
