Applied Control And Functions (Including Circuit Configuration); Indoor Controller Block Diagram; In Case Of Connection Of Wired (Simple) Remote Controller - Carrier TOSHIBA MMD-UP0241HP-UL Service Manual

9. APPLIED CONTROL AND FUNCTIONS
(INCLUDING CIRCUIT CONFIGURATION)
9-1. Indoor Controller Block Diagram (MCC-1720)
9-1-1. In case of connection of wired remote controller.
MCU
Indoor unit
#1 (Heder)
Indoor control P.C. board (MCC-1720)
Drain
pump
Indoor
fan motor
Power circuit
DC280V
Max.8 or 16 units are connectable.
(depending on connection system)
*1 The schedule timer can be connected
to only RBC-AMT∗∗∗.
Wired header remote controller (Up to 2 units)
Display LCD
Display LED CPU
Remote controller
communication circuit
A B
DC20V
Remote controller
communication circuit
DC5V
DC12V
Driver
MCU
Fan motor
control circuit
Schedule timer (weekly timer mode.)
Function setup Display LCD
Key switch
CN2
CN1
DC5V
Power circuit
∗1
EEPROM2
EEPROM1
TA sensor
TC1 sensor
TC2 sensor
MCU
TCJ sensor
Float input
HA
Bus communication
circuit
AC
synchronous
signal input circuit
L1 L2
Uv(U1) Uv(U2)
Outdoor Unit
Power supply
208/230-1-60
- 32 -
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
Power Power
Supply Supply
Outdoor unit Outdoor unit
*1 The schedule timer com be
connected. to only RBC-AMT***
B