Mitsubishi Electric HP120TNU-A Service Handbook page 360

Chapter 10 LED Status Indicators on the Outdoor Unit Circuit Board
10-1 LED Status Indicators........................................................................................................................... 1
10-1-1 How to Read the LED ............................................................................................................................. 1
10-1-2 Initial LED Display................................................................................................................................... 2
10-1-3 Clock Memory Function .......................................................................................................................... 3
10-2 LED Status Indicators Table ................................................................................................................ 4
HWE18220_GB