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6. CONTROL BLOCK DIAGRAM
6-1. Indoor Controller Block Diagram
6-1-1. In Case of Connection of Wired (Simple) Remote Controller
Indoor unit
#1 (Header)
PMV
Fan IPDU
(MCC-1610)
Fan motor
Indoor
control
fan
motor
Reactor
Noise filter
Drain
P.C. Board
pump
(MCC-1551)
*Option
Wired (Simple) header remote controller
(Up to 2 units)
Display LCD
Display LED
EEPROM
Indoor control P.C. Board
(MCC-1643)
DC20V
DC5V
DC12V
Outside output
Start/Alarm/Ready
Power
circuit
MCU
circuit
DC5V
DC15V
Power
circuit
Function setup
Key switch
CPU
DC5V
Power
circuit
Remote controller
communication circuit
A
B
Remote controller
communication circuit
MCU
Driver
communication
L
N
Power supply
1Φ 220-240V, 50Hz
1Φ 220V, 60Hz
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.
*
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 Schedule remote
controller to the simple wired remote controll
– 24 –
Schedule timer
Display
LCD
LCD
driver
CN1
CN2
CPU
DC5V
* 1
Power
circuit
#2
(Follower)
EEPROM
TA sensor
TC sensor
TCJ sensor
Float input
HA
L
Serial
circuit
Power
supply
1
2
3
Indoor/Outdoor
communication
Outdoor unit
Function setup
Key switch
Secondary
battery
#3
(Follower)
A
B
A
B
Same
Same
as left
as left
N
L
N
1 2 3
1 2 3
Power
supply
Outdoor
Outdoor
unit
unit
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