Connection Of Both Wired Remote Controller And Wireless Remote Controller - Toshiba MMU-UP0051MH-E(TR) Service Manual

8-2-3. Connection of both wired remote controller and wireless remote controller

Indoor unit
#1 (Header)
Indoor control P.C. board
(MCC-1744)
DC20V
DC5V
DC12V
Power
circuit
Drain
pump
Indoor
fan motor
Transformer
Wired header remote controller
(Up to 2 units)
Display LCD
CPU
Display LED
Remote controller
communication circuit
A B
Remote controller
communication circuit
Driver
CPU
Outside
output
Operation
Alarm
Defrost
Thermostat OFF
Cooling
Heating
Fan
Fan motor
relay circuit
AC synchronous
signal input circuit
L N
Power supply
220 - 240V ~, 50Hz
220V ~, 60Hz
Function setup
Key switch
CN2
CN1
DC5V
Power
circuit
* 1
EEPROM
communication circuit
TA sensor
Power
circuit
TC1 sensor
TC2 sensor
TCJ sensor
Buzzer
Float input
HA
BUS
communication
circuit
Uv (U1) Uv (U2)
Uv (U1) Uv (U2)
Outdoor unit
– 57 –
Schedule timer (weekly timer mode)
LCD
Display
driver
LCD
Function setup
CPU
DC5V
Key switch
Power
Secondary
circuit
battery
#2
(Follower)
A
Wireless remote
controller receiver
Receiving
P.C. board
Remote controller
Emergent
operation
SW
Same
as left
DC5V
CPU
Function
setup SW
Receiving Display
circuit LED
Power
supply
Max.8 or 16 units are connectable.
(depending on connection system)
*1 The schedule timer can be connected
to only RBC-AMT∗∗∗.
#3
(Follower)
B A B
Same
as left
Power
supply
Outdoor
Outdoor
unit unit