Indoor Unit Control; Indoor Controller Block Diagram; Connection Of Wired Remote Controller; Indoor Control Circuit - Toshiba RAV-SM566KRT-E 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-1510)
Receiver and
Display P.C. board
(MCC-5044)
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
Central control
communication circuit
DC20V
DC12V
DC5V
Driver
Buzzer
Outside
output
Thermo. ON/
Fan motor
COOL/HEAT/
control circuit
DC15V
Function setup
Key switch
CN2
CN1
DC5V
Power circuit
∗2
Sold separately
U4 A B
Remote controller
communication circuit
CPU
H8/3039
Driver
Run/
Alarm/
Ready/
AC
synchronous
signal input circuit
FAN
1 2 3
1 3
2
Outdoor unit
– –
26
FILE NO. SVM-12004
Central remote controller
Display
LCD driver
LCD
Function setup
CPU
DC5V
Power Secondary
circuit battery
Follower unit
#2
A
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
Key switch
Sold separately
#3
B A B
Same as
the left
3 1 2 3
Outdoor
unit