Error E202 / Communication error — Indoor and outdoor unit communication lost

What does E202 mean?

The indoor and outdoor units have lost communication for at least one minute, leading to an E202 error code and stopping operation. The wired remote controller displays 'Communication error'.

• Problem with the communication connection between indoor and outdoor units.
• Issue with the power line or communication cable connection status.

Click steps to track your progress.

1. 1

   Check all communication cables connecting the indoor and outdoor units for secure connections and damage.

2. 2

   Verify the power line connections to both indoor and outdoor units.

3. 3

   Ensure all wiring is correctly installed according to the installation manual.

4. 4

   Turn off the main power breaker for the air conditioner for a few minutes, then restore power.