Mitsubishi Electric · R410A Systems
There is a communication error between indoor and outdoor units or within the indoor unit's control system. This prevents proper command and status exchange, leading to system malfunction.
Click steps to track your progress.
Inspect communication wiring between indoor and outdoor units for secure connections and visible damage.
Verify power supply to both indoor and outdoor unit PCBs.
Check for correct addressing settings of indoor and outdoor units, ensuring no conflicts.