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8. INDOOR CONTROL CIRCUIT (Slim Duct Type)
8-1. Indoor Controller Block Diagram
8-1-1. Connection of Wired Remote Controller
Wired remote controller (Max. 2 units) Weekly timer
TCC-LINK
Central controller
(Option)
TCC-LINK
adapter P.C. board
(MCC-1440)
* Case of TCC-LINK adapter
Case of TCC-LINK adapter
(Option)
Outdoor unit
Outdoor unit
321
321
321
Up to 8 units are connectable. ∗1
∗1 However Max.7 units are connectable in case of mounting network adapter
when two wired remote controllers are connected.
∗2 The network adapter is mounted to only 1 unit.
TCC-LINK adapter is mounted to the master unit.
∗3 Connection of the weekly timer to the sub remote controller is unavailable.
Same as left
∗2
#3
(Follower)
A B
AB
Same as left
∗2
#2
(Follower)
A B
DC5V
DC5V
Indoor unit
#1 (Master)
Indoor control P.C. board (MCC-1570)
Drain
pump
Indoor
fan motor
MCU
Driver
Humidifier output
DC12V
DC5V
DC20V
Outside
output
Remote controller
communication circuit
Display LCD Function setup
Key switch
CN2
CN1
∗3
MCU
Display LED
Display LCD LCD driver
MCU
Remote controller
communication circuit
Function setup
Key switch
Power circuit
Power circuit
DC280V
Fan motor
control circuit
MCU
EEPROM
TA sensor
TC sensor
TCJ sensor
Float input
HA
Auto grille
panel
TCC-LINK
communication circuit
Run
Warning
Defrost
Thermo. ON
COOL
HEAT
FAN
Serial send/
receive circuit
AC
synchronous
signal input circuit
Power
circuit
Secondary
battery
Outdoor unit
321
U3
U4