E1 n 61 (FJM Indoor) — More than 2 indoor units cool and heat simultaneously

What does E1 n 61 mean?

The FJM indoor unit displays E1 n 61, indicating a conflict where multiple indoor units are attempting to operate in different, incompatible modes (e.g., one cooling, one heating) in a system that doesn't support mixed-mode operation.

• Conflicting operating mode settings on different indoor units
• Incorrect system configuration for multi-zone operation

Click steps to track your progress.

1. 1

   Turn off all indoor units from their respective remote controls.

2. 2

   Ensure that all indoor units are set to the same operating mode (either heating or cooling, or off) if your system does not support simultaneous mixed-mode operation.

3. 3

   If individual indoor units are meant to be controlled independently, verify each unit's mode setting against system capabilities.

4. 4

   Restart the units one by one, ensuring harmonious operation. If the issue persists, contact a technician for configuration check.