If you see two dashes (“--”) on your indoor unit’s display, it means the system is in Conflict Mode. This only applies to multi-zone units.
What It Means:
One indoor air handler is set to cooling, while another is set to heating—causing a conflict.
How to Fix It:
Make sure all indoor units are set to the same mode—either cooling or heating.
Once all units match, the “--” code will disappear and normal operation will resume.
Was this article helpful?
That’s Great!
Thank you for your feedback
Sorry! We couldn't be helpful
Thank you for your feedback
Feedback sent
We appreciate your effort and will try to fix the article