Operation Indicator Blinking (Multi-System) - Incompatible operating modes

What does Operation Indicator Blinking mean?

In a multi-system air conditioner (MXZ series) connecting multiple indoor units to one outdoor unit, the indoor unit's operation indicator lamp will flash if different units are set to conflicting modes (e.g., one to cool and another to heat simultaneously).

• Attempting to operate multiple indoor units in different modes (cooling/heating) simultaneously with a single outdoor unit.

Click steps to track your progress.

1. 1

   Check the operating mode settings for all indoor units connected to the multi-system outdoor unit.

2. 2

   Ensure all indoor units are set to the same operation mode (e.g., all to COOL or all to HEAT).

3. 3

   The unit that started operating earlier dictates the mode for the entire system; adjust others to match.