HL - Hard Lock (Controlled by External Source)

What does HL mean?

This status indicates the unit is being controlled by an external source, such as a dry contact or a central controller, not directly by its remote.

• External controller connected and active
• Dry contact signal is engaged

Click steps to track your progress.

1. 1

   Check if an external control system (like a central controller or building management system) is connected and active.

2. 2

   Verify the status of any dry contact inputs that might be controlling the unit.

3. 3

   If direct control is desired, disconnect or disable the external control source.