What It Means
- Welded Contactor - Compressor always runs
- EL18KSLV: Discharge temperature too high protection
Lennox Split & Multi-Split
Lennox Split & Multi-Split Error Code 8
Split & Multi-Split
8 means different things on different Split & Multi-Split models. Enter your model number to see only your reading, or find your model below.
Causes & actions from Lennox
Welded Contactor - Compressor always runs
4 models
HSXB15, XC15, XP15, XP19
How it shows
- lsom alert led: 8 (alert: flashing ×8)
1Compressor contactor failed to open. 2Thermostat demand signal not connected to module.
Other manual wording (1 of 2)
HSXB15
1 Compressor contactor failed to open. 2 Thermostat demand signal not connected to module.
Other manual wording (2 of 2)
XP15
1Compressor contactor failed to open. 2Thermostat demand signal not connected to LSOM.
Applicable models & manual sources
- XC15
Welded Contactor − Com- pressor always runs
- XP19
Welded Contactor − Compressor always runs
- XP19
Welded Contactor − Compressor always runs
- HSXB15
Welded Contactor Compressor always runs
- XP15
Welded Contactor − Compressor always runs
Discharge temperature too high protection
Models: EL18KSLV
Heat pump (outdoor)
How it shows
- el18kslv outdoor fault display: 8
- el18kslv pcb fault led: 8
Compressor discharge temperature over 115 ℃，error clear within 3 minutes if temperature goes down
Applicable models & manual sources
- EL18KSLV
Discharge temperature too high protection
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.
