Indoor Unit Control; Indoor Controller Block Diagram - Toshiba RAV-HM561KRTP Series Service Manual

7-1. Indoor Controller block diagram

7-1-1. Connection of wired remote controller
Indoor unit
#1 Header unit
Indoor control P.C.
board (MCC-1696)
Receiver and
Display P.C. board
(WP-033)
Display LED
Receiver unit
Louver
motor
Indoor
fan motor
Power circuit
DC280V
∗1 Up to 16 units (TU2C-Link) or 8 units (TCC-Link)
can be connected.
∗2 The "1:1 model" connection interface is mounted
to only 1 unit. "1:1 model"connection interface is
mounted to the header unit.

7. INDOOR UNIT CONTROL

Wired (Simple) header remote controller (wired)
Display LCD
Display LED
MCU
Remote controller
communication circuit
Central control
remote controller
(Sold separately)
U3 U4
Central control
communication circuit
DC20V
DC12V
DC5V
Driver
Buzzer
Driver
Outside
output
Alarm/
Ready/
Thermo. ON/
Fan motor
COOL/HEAT/
control circuit
DC15V
Function setup
Key switch
CN2
CN1
DC5V
Power circuit
∗2
Sold separately
A B
Remote controller
communication circuit
MCU
Run/
AC
synchronous
signal input circuit
FAN
2 3
1
1 3
2
Outdoor unit
- 27 -
Central remote controller
Display
LCD driver
LCD
Function setup
MCU
Key switch
DC5V
Power Secondary
circuit battery
Sold separately
Follower unit
#2
A B
EEPROM
TA sensor
Same as
the left
TC sensor
TCJ sensor
HA
Wireless remote
signal setting
(A/B)
Serial send/
receive circuit
1 2
Outdoor
unit
#3
A B
Same as
the left
3 1 2 3
Outdoor
unit