Controller - Toshiba Carrier MMD-AP0246HPUL Service Manual

8-1-3. In case of connection of wired remote controller and Wireless remote controller.
MCU
Indoor unit
#1 (Heder)
Indoor control P.C. board (MCC-1720)
DC20V
DC12V
Drain
pump
Indoor
fan motor
Power circuit
DC280V
Wired header remote controller (Up to 2 units)
Display LCD
Display LED CPU
Remote controller
communication circuit
A B
Remote controller
communication circuit
DC5V
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
L N
U1 U2
Outdoor Unit
Power supply
208/230-1-60
- 29 -
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