Daikin AC Error Code U7
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. … Read more