Mitsubishi Heavy Industries SCM71ZM-S1 Technical Manual page 216

Limit switch anomaly (SRK20, 25, 35, 50, 60ZSX only)
Is the air inlet panel set correctly?
Are limit switch OK ?
Defective indoor control PCB
Current cut
＊
Current safe stop
Correction, re-set
Defective limit switch
Note(1) Check if the limit switch functions properly or not by seeing whether
the lamp continues to blink or can be reset by pressing the limit swit-
-ch by hand while the air inlet panel is removed.
Compressor lock, Compressor wiring short circuit, Compressor output is open phase,
Outdoor PCB is faulty, Service valve is closed, EEV is faulty, Compressor faulty.
sub
main
main
SCM71, 80 : 1.154Ω or more at 20ºC
main
215
- -
Defective limit switch, defective indoor
control PCB, Defective air inlet panel set
＊
Overload operation, compressor
lock, overcharge
'17 • SCM-T-225
223.