Configuration Of Control Circuit - Toshiba MML-AP0074NH-E Service Manual

8. CONFIGURATION OF CONTROL CIRCUIT

8-1. Indoor Controller Block Diagram
8-1-1. Case of Main (Sub) Remote Controller Connected
Indoor unit
#1
U3
Central control
remote controller
(Option) *1
U4
fan motor
Max. 8 units are connectable.
*1 In group connection, mount the central control
remote controller to group header unit.
*2 Connection of weekly timer to sub remote controller
is unavailable.
Main (Sub) master remote controller
(Up to 2 sets)
Display part
Display part
Main P.C. board
(MCC-1510)
DC20V
Sensor display
P.C. board
(MCC-5044)
Sensor
LED
part
Damper
motor
Louver
motor
Indoor
Power
circuit
DC280V
Function setup
LCD
CPU
DC5V
LED
Power circuit
Remote controller
communication circuit
A B
Remote controller
communication circuit
Central control
communication circuit
DC5V
Driver
Driver
Outside output
Start/Alarm/Ready
Thermostat ON
COOL/HEAT/FAN
DC12V
Fan motor
control circuit
AC synchronous
signal input circuit
Power supply
1Ø 220 – 240V, 50Hz
1Ø 220V, 60Hz
42
Weekly timer
LCD
driver
Key switch
CN2
CPU
CN1
DC5V
* 2
Power circuit
EEPROM
TA sensor
TC sensor
CPU
TCJ sensor
HA
Remote
controller
A/B setup
BUS
Communication
circuit
L N U1 U2
L N
U2
U1
Display part
LCD
Function setup
Key switch
Secondary battery
A B A B
Same Same
as left as left
U1U2 U1U2
L N L N
Power Power
supply supply
Outdoor Outdoor
unit unit
Outdoor unit