Toshiba MMU-P0121H Service Manual page 130

3-7-3-5. Interface P.C. board check positions (MCC-1343)
*
( : They are used in the Heat Pump model only.)
LED
Indicates the communication status.
Green : Between indoor units or other outdoor units
Yellow : Between central management remote controller
*
PMV A
GND
+ 12V
Solenoid
valve output
Heater output
*
4-way valve outlet
Fan output
Dyna-doctor
connection terminal
(CN800)
Fixed-speed compressor 2
high-pressure SW system alarm
Fixed-speed compressor 2
BUS
PMV B
communication
MG-SW
3-127
UART communication
+ 5V
TD1, TD2, TS1, TE, TK3
Fixed-speed compressor 1
MG-SW
Fixed-speed compressor 1
high-pressure SW system alarm
Temp. sensor
Pressure sensor
Pd, Ps
For power
transformer
connection
Temp. sensor TK1
SW 1
SW 2
SW 3
7 Segment LED
Temp. sensor TK2
L3 phase, N phase
L1 phase, L2 phase