A2 (6602) - Transmission processor hardware error (M-NET Remote controller)

What does A2 mean?

The M-NET remote controller for the Mitsubishi Electric PUMY Air Conditioner has experienced a hardware error within its transmission processor, preventing proper communication. This applies only to M-NET remote controllers.

• Faulty M-NET remote controller hardware
• Internal hardware malfunction within the remote controller
• Communication line issue affecting the processor

Click steps to track your progress.

1. 1

   Note the error code displayed on the M-NET remote controller.

2. 2

   Power off the Mitsubishi Electric PUMY Air Conditioner system at the main electrical breaker.

3. 3

   Wait for at least 30 seconds, then restore power to the system.

4. 4

   If the error persists, contact a qualified service technician, as this points to a hardware issue with the remote controller or its connection.