Printed Circuit Boards For Rci-Fsn3 Indoor Units - Hitachi RCI-1.0FSN3 Service Manual

5 Control system

5.1.1 Printed circuit boards for RCI-FSN3 indoor units

C A U T I O N
Turn off the power supply before setting the DIP switches. If not, the settings will not be valid.
N O T E
• The symbol "■" indicates the position of the DIP switches. The figures show the setting before transmission
or after selection.
If the "■" mark is not displayed, this indicates that the position of the pin is not affected.
•
The indoor unit PCB operates with five types of DIP switches and two rotary switches. The position is as follows:
LED1
LED3
LED4
184
SMGB0077 rev.0 - 01/2013
LED indicator
Red
Yellow
Red
Connector indication
PCN4
PCN7
THM1
THM2
THM3
THM4
THM5
CN1
CN2
CN3
CN4
CN5
CN6
CN7
CN8
CN10
CN11
CN14
CN17
CN34
This LED indicates the transmission status between the indoor unit
and the remote control.
This LED indicates the transmission status between the indoor unit
and the outdoor unit.
PCB power supply
Terminal board 1
Air inlet thermistor
Air outlet thermistor
Freeze protection thermistor
Gas piping thermistor
Motor for indoor fan
Terminal board 2
Air panel PCB
Micro-computer control expansion valve
Air panel motor for automatic swing louver
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Float switch
Not used