What does CH07 mean?

This code appears on multi-split systems when the main unit is set to one mode (cooling or heating) but a connected slave unit is set to the opposite mode. The first unit turned on acts as the 'master'.

• Master unit set to heating, slave unit set to cooling
• Master unit set to cooling, slave unit set to heating

Click steps to track your progress.

1. 1

   Turn off the unit using the remote controller.

2. 2

   Turn the unit back on.

3. 3

   Change the mode on the affected indoor unit to match the master unit's mode.