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8. CONTROL BLOCK DIAGRAM
8-1. Indoor Control Circuit
Network adapter (Option)
Indoor control P.C. board (MCC-1402)
Display
LED
CPU
EEPROM
TA sensor
Display
LCD
Function setup
Key switch
#1
#3
AB
Indoor unit
Main (Sub) master remote controller
Power
circuit
Fan motor
control
circuit
CPU
TMP88CH
47FG
(TMP88PH
47FG)
AC
synchronous
signal input
circuit
Serial
send/
receive
circuit
Run
Warning
Ready
Thermo. ON
Cool
Heat
Fan
Outside
output
Driver
Humidifier
relay output
Remote
controller
communication
circuit
CPU
H8/3039
Remote
controller
communication
circuit
Heater relay
output
TC sensor
TCJ sensor
Float input
Louver
motor
Drain
pump
Indoor
fan
motor
Transformer
Outdoor unit
123
123
Power circuit
DC5V
CPU
LCD
driver
Display
LCD
Function setup
Key switch
Weekly timer
Secondary
battery
DC5V
DC5V
*
3
CN2 CN1
AB
123
Outdoor
unit
Same as
the left
*
2
#2
AB
123
Outdoor
unit
Same as
the left
*
2
Max. 8 units are connectable.*1
*1 Max. 7 units when network adapters
are attached
*2 Network adapters are attached to only
one unit.
*3 Weekly timer is not connectable to the
sub remote controller.
Network adapter
P.C. board
(MCC-1401)
Remote
controller
communication
circuit
CPU
H8/3687
AI NET
communication
circuit
Central control
remote controller
(Option)
Power circuit
DC5V
Switch setup
Power
circuit
Power
circuit
Remote
controller
communication
circuit
Temporary
operation SW
Receive circuit
Display LED
Buzzer
Function
setup SW
CPU
Sensor P.C. board (MCC-1418)
Wireless remote controller kit
Option Option
Optional only for 4-way air
discharge cassette type models
DC280V
X
Y
DC20V
DC12V
DC5V