Description: Signal Transmission Error (between Indoor Unit and Outdoor Unit)Signal Transmission Error on Outdoor Unit PCB (24/30/36 Class Only).
Method of Malfunction Detection: Communication error between microcomputer mounted on the main microcomputer and PM1.
Malfunction Decision Conditions:
- The abnormality is determined when the data sent from the PM1 can not be received for 9 seconds.
- The error counter is reset when the data from the PM1 can be successfully received.
Supposed Causes: Defective outdoor unit PCB.
Troubleshooting Procedure
