Control Block Diagram; Indoor Controller Block Diagram - Toshiba RAV-SM304MUT-E Service Manual

5-1. Indoor Controller Block Diagram

5-1-1. In Case of Connection of Wired (Simple) Remote Controller
Indoor unit
#1 (Heder)
Indoor control P.C. board (MCC-1402)
* None for
Duct type
Louver
motor
Drain
pump
*
Option for
Ceiling type
Indoor
fan motor
Power circuit
DC280V
∗ "1:1 model" connection interface
U3
Central remote
controller(Option)
U4
AMP Air Conditioning

5. CONTROL BLOCK DIAGRAM

Wired (Simple) heder remote controller (Max. 2 units)
Display LCD
Display LED CPU
Remote controller
communication circuit
A B
DC20V
Remote controller
communication circuit
DC5V
DC12V
Driver
External
CPU
output
TMP88CH47FG
(TMP88PH47FG) Run
Alarm
Defrost
Thermo. ON
COOL
Fan motor
HEAT
control circuit
FAN
(Option)
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
CPU
H8/3039
Float input
HA
Serial send/
receive circuit
AC
synchronous
signal input circuit
1 2 3
Up to 8 units are connectable. ∗1
∗1 However, if "1:1 model connection interface" is
connected when 2 wired (simple) remote controllers
are connected, Max. 7 units are connectable.
1 2 3
∗2 Connect "1:1 model connection interface" to only
1 unit and connect 1 "1:1 model connection
interface" to the header unit.
∗3 It is unavailable to connect the Central remote
controller to the simple wired remote controller.
Outdoor unit
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Central remote controller
LCD driver
Function setup
CPU
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 2
Outdoor unit Outdoor unit
B
3