Communication error — Indoor unit main address set incorrectly

What does Communication error (Main Address) mean?

A communication error will occur if the main address for an indoor unit is set to a value outside the acceptable range of 0 to 3. This prevents proper communication within the air conditioning system.

• The main address of the indoor unit is set to a value other than 0, 1, 2, or 3.
• Incorrect settings for SEG5 and SEG6 during manual address configuration.

Click steps to track your progress.

1. 1

   Ensure that power is supplied to the indoor unit and that its panel is correctly connected.

2. 2

   Access the address setting mode using your wired remote control.

3. 3

   Set the main address for each indoor unit to a value within the specified range of 0 to 3.

4. 4

   When setting the main address manually, confirm that SEG5 and SEG6 are not set to values in the range A to F, unless specifically instructed otherwise.

5. 5

   Refer to your manual's "Common steps for setting the addresses and options" section for detailed instructions on using the remote control for address settings.