Applied Control And Functions (Including Circuit Configuration) - Toshiba MD-VNK802HEXE Service Manual

8
Applied control and functions (including
circuit configuration)
8-1. Heat exchanger controller block diagram
8-1-1. When the main (sub) remote controller is connected
Indoor unit
PMV
Damper
motor
Fan motor relay
Supplying
fan motor
Fan motor relay
Relay circuit
Exhausting
fan motor
Relay circuit
Humidifier
Drain
pump
Power supply
circuit
Main (sub) header remote controller
(up to 2 units)
Display
LCD
Display
MCU
LED
EEPROM
Remote controller
communication circuit
Remote controller
communication circuit
circuit
circuit
Driver
External
input
• Remote
controller
AC
External
invalid
synchronous
output
• High / Low
signal input
• Bypass /
circuit
• Driving
Heat
• Damper
Exchange
• Abnormal
• ON / OFF
Power supply
1Ø220-240 V~, 50 Hz
1Ø220 V~, 60 Hz
Schedule timer
(when in weekly timer mode)
Display
Function setting
Key switch
Power supply Power supply
circuit
EEPROM
TC1 sensor
TC2 sensor
TCJ sensor
MCU
TFA sensor
TSA sensor
TRA sensor
TOA sensor
HA
Float input
BUS
Setting
communication
switch
circuit
Indoor / Outdoor communication
Outdoor
unit
31
LCD
LCD driver
Function setting
MCU
Key switch
Rechargeable
circuit battery
Up to 8 units can be
connected. *1
*1 A weekly timer cannot
be connected to a sub
remote controller.
Same as Same as
left *2 left *2
Power Power
supply supply
Outdoor Outdoor
unit unit