Indoor Control Circuit (Slim Duct Type); Indoor Controller Block Diagram - Toshiba RAV-SM404SDT-E Service Manual

8. INDOOR CONTROL CIRCUIT (Slim Duct Type)

8-1. Indoor Controller Block Diagram

8-1-1. Connection of Wired Remote Controller
Indoor unit
#1 (Master)
Indoor control P.C. board (MCC-1570)
DC20V
DC12V
Drain
pump
Indoor
fan motor
Power circuit
DC280V
* Case of TCC-LINK adapter
Case of TCC-LINK adapter
TCC-LINK U3
Central controller
(Option) U4
Wired remote controller (Max. 2 units)
Display LCD
Display LED
MCU
Remote controller
communication circuit
A B
Remote controller
communication circuit
DC5V
Humidifier output
Driver
Outside
output
MCU
Run
Warning
Defrost
Thermo. ON
COOL
Fan motor
HEAT
control circuit
FAN
(Option)
TCC-LINK
adapter P.C. board
(MCC-1440)
TCC-LINK
communication circuit
Function setup Display LCD
Key switch
CN2
CN1
DC5V
Power circuit
∗3
EEPROM
TA sensor
TC sensor
TCJ sensor
MCU
Float input
HA
Auto grille
panel
Serial send/
receive circuit
AC
synchronous
signal input circuit
1 2 3
1 2 3
Outdoor unit
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.
– 43 –
Weekly timer
LCD driver
Function setup
MCU
Key switch
DC5V
Power Secondary
circuit battery
#2 #3
(Follower) (Follower)
A B A
Same as left Same as left
∗2 ∗2
1 2 3 1
Outdoor unit Outdoor unit
B
2 3