Midea M2OC-14HRDN1 Technical & Service Manual page 36

Annex 2
1. Reference voltage data:
a) Rectifier : Input :220-230V(AC), output :310V(DC)
b) Inverter module: U,V, W 3ph.
U-V
U-W
V-W
P-N
c) Photo-couple PC817, PC851: Control side <+5V, AC side :< 24V(AC)
d) S terminal and N: changeable from 0-24V
2. Check the Diode Bridge component ( In wiring diagram, rectifier)
Remark: If this part is abnormal, the LED will not light.
~
-
Multi-meter
+
~
~
-
Result
60-150V(AC)
60-150V(AC)
60-150V(AC)
+
~
Result
Forward Resistance
_
Infinite
~500 ohm
+
~
~500 ohm
~
Backward Resistance
Infinite
Infinite
Infinite
ODMI-1103-A
DC
310V