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5. INDOOR CONTROL CIRCUIT
5-1. Indoor Controller Block Diagram
5-1-1. Connection of Wired Remote Controller
Wired remote controller (Max. 2 units)
Central remote
controller (Option)
TCC-LINK adapter P.C.board
(MCC-1440)
TCC-LINK adapter (Option)
*1 "1:1 model" connection interface
is connected to header unit.
∗
Case of "1:1 model" connection interface
(TCC-LINK adapter)
Outdoor unit
Outdoor unit
3
2
1
3
2
1
3
2
1
Up to 8 units
are connectable.
Same as left
* 1
#3
A
B
A
B
Same as left
* 1
#2
(Follower)
(Follower)
A
B
DC5V
Indoor unit
#1 (Header)
Indoor control P.C. board (MCC-1643)
Louver
Motor
Indoor
fan motor
CPU
Driver
DC12V
DC5V
DC20V
Outside
output
Remote controller
communication circuit
Display LCD
Function setup
Key switch
CPU
Display LED
Remote controller
communication circuit
Power circuit
Power circuit
DC280V
Fan motor
control circuit
EEPROM
TA sensor
TC sensor
TCJ sensor
Float input
HA
TCC-LINK
communication circuit
Start/
Alarm
Serial send/
receive
circuit
Refrigerant leak
detection sensor
AC
synchronous
signal input circuit
Outdoor unit
3
2
1
U3
U4