Mcs Motor Control System Board Pin Out - Friedrich VRP12K Service And Parts Manual

Mcs Motor Control System Board Pin out

L1
L2
Ground
Fuses
1. Check power from pins 1 to 2 for 12 volts.
2. Check power from pins 5 to 6 for 12 volts.
3. Check power from Line 1 to ground for appopriate voltage.
4. Check power from Line 2 to ground for appropriate voltage.
5. Remove power from the unit and allow two minutes for capacitors to discharge before attempting to take continuity readings.
6. Check for continuity on the fuses. If fuses are blown, replace MCS board.
137
COMPONENTS TESTING
U V W
Compressor Pinout
Figure 616 (MCS Board)
12V
GND
RS485 - Y
RS485 - Z
12V
GND
RS485 - A
RS485 - B