C203 - Timeout Compressor (Inverter Micom <-> Main Micom)

What does C203 mean?

The inverter micro-controller and main micro-controller have lost communication, specifically regarding the compressor operation.

• Communication wiring fault
• Software issue
• Faulty main or inverter micro-controller

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power supply for at least 5 minutes, then restart.

2. 2

   Check for any loose or damaged communication wires between internal components (requires technician access).

3. 3

   If the issue persists, contact a qualified service technician.