Indoor Control Circuit; Indoor Controller Block Diagram; Rav-Sm2242Dt-E, Rav-Sm2802Dt-E / Rav-Sm2242Dt-Tr, Rav-Sm2802Dt-Tr - Toshiba RAV-SM2242DT-E Service Manual

6-1. Indoor Controller Block Diagram

RAV-SM2242DT-E, RAV-SM2802DT-E / RAV-SM2242DT-TR, RAV-SM2802DT-TR

6-1-1. Connection of Wired (Simple) Remote Controller
Indoor unit
#1 (Header)
Network adapter (Option)
Network adapter
P.C. board
(MCC-1401)
X
AI net
communication
Y
circuit
DC5V
Power supply
circuit
Transformer
Central control
remote controller
(Option)
Max. 8 units are connectable. ∗1
∗1 However when mounting a network adapter while 2 wired (simple) remote controllers are connected,
Max. 7 units are connectable.
∗2 A network adapter is mounted to only 1 unit.
∗3 Connection of schedule timer to the simple remote controller is unavailable.

6. INDOOR CONTROL CIRCUIT

Wired (Simple) Master remote controller
Display part
LCD
Display part
LED
Indoor control
P.C. board
(MCC-1403)
Remote controller
communication
DC20V
circuit
CPU
H8/3687
Switch Power supply
set circuit
Drain
pump
(Sold separately)
Indoor
fan motor
Transformer
(Max. 2 units)
Function
setup
CPU
Key switch
Power supply
circuit
DC5V
Remote controller
communication
circuit
A B
Remote controller
communication
circuit
DC5V
DC12V
CPU
H8/3039
Driver
AC synchronous
signal input circuit
Outside
output
START
ALARM
READY
Fan motor
THERMO ON
relay circuit
COOL
HEAT
FAN
1 2 3
1 2 3
Outdoor unit
– 22 –
Schedule timer
Display part
Driver
LCD LCD
CN1
CN2
CPU
*3
Power supply
circuit
DC5V
#2
(Follower)
A B
EEPROM
TA sensor
Same as
TC sensor
left ∗2
TCJ sensor
Float input
Serial send/
receive circuit
1 2 3
Outdoor
unit
Function
setup
Key switch
Secondary
battery
#3
(Follower)
A B
Same as
left ∗2
1 2 3
Outdoor
unit