Indoor Control Circuit; Indoor Controller Block Diagram - Toshiba RAV-GM901KRTP 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
Max. 8 units are connectable. ∗1
∗1 When group and twin combination.
Main remote controller shal be connected follower indoor unit.
∗2 Weekly timer is not connectable to the sub remote controller.
7. INDOOR UNIT CONTROL
Wired (Simple) header remote controller (wired)
Display LCD
Display LED
CPU
Remote controller
communication circuit
Central control
remote controller
(Sold separately)
U3 U4
Central control
communication circuit
DC20V
DC12V
DC5V
Driver
Buzzer
Driver
Outside
output
Run/
Alarm/
Ready/
Thermo. ON/
Fan motor
COOL/HEAT/
control circuit
FAN
DC15V
Function setup
Key switch
CN2
CN1
DC5V
Power circuit
∗2
Sold separately
A B
Remote controller
communication circuit
CPU
RL78/G13
Wireless remote
signal setting
Serial send/
receive circuit
AC
synchronous
signal input circuit
1 2 3
1 2 3
Outdoor unit
- 26 -
Central remote controller
Display
LCD driver
LCD
Function setup
CPU
Key switch
DC5V
Power Secondary
circuit battery
Sold separately
Follower unit
#2 #3
A B
EEPROM
TA sensor
Same as
the left
TC sensor
TCJ sensor
HA
(A/B)
1 2 3
Outdoor
unit
A B
Same as
the left
1 2 3
Outdoor
unit