What It Means
- High pressure switch fault
Lennox Split & Multi-Split
Lennox Error Code Green Slow FLASH / Red OFF
Split & Multi-Split: Heat pump (outdoor)
Causes & actions from Lennox
How it shows
- cmc1 ds2 ds1 led: Green Slow FLASH / Red OFF (ds1: off, ds2: flashing (slow))
This manual entry does not list further causes or actions.
Applicable models & manual sources
- 14HPX
High pressure switch fault
- XP14
High pressure switch 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?
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