E0/E4 (6834) - MA communication receive error

What does E0/E4 (6834) mean?

The MA remote controller for the Mitsubishi Electric PUMY Air Conditioner is experiencing a general error when attempting to receive a communication signal. This applies only to MA remote controllers.

• Issue with the communication wiring (MA line)
• Faulty MA remote controller or its internal receiver
• Transmitting device not sending a signal or malfunctioning

Click steps to track your progress.

1. 1

   Note the error code displayed on the MA 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 to check the MA communication line and remote controller.