Hitachi RCI-1.0FSN4 Service Manual page 219

6 Optional functions
Indoor units input and output signals
Function 1: remote on/off of the unit
On-screen display: 03.
This is an optional on/off signal that uses the signal levels ON and OFF. Connect the wiring and use the materials as
indicated in "6.1.1 Available ports". (Example: terminals 1 and 3 of CN3)
?
N O T E
• When the unit is started using the remote ON/OFF switch, the fan speed depends on the mode stored in the remote control.
• The collection of signals during the first 10 seconds after connecting the power supply is not available due to component initialization.
Do not change the signal in this period.
• Operation priority is given to the remote on/off signal or to the remote control, whichever is transmitted last.
• If multiple indoor units are connected to the same transmission wiring for remote control switch, input the signal to any of these indoor
units. When the transmission wiring is not used in a multiple indoor unit system for simultaneous operation, input the signal to the
main indoor unit.
Control using
Function 2: remote switching on of the unit (pulse signal input)
On-screen display: 04.
This is an optional remote on/off signal that uses the pulse signal.
Connect the wiring and use the materials as indicated in
Function 2: remote switching off of the unit (pulse signal input)
On-screen display: 05.
This is an optional remote off signal that uses the pulse signal.
If a signal is input during the stoppage of the system, it remains unchanged.
Connect the wiring and use the materials as indicated in
A time chart with the uses of functions 2 is shown below.
?
N O T E
The collection of signals during the first 10 seconds after connecting the power supply is not available due to component initialization. Do
not change the signal in this period.
205 SMGB0099 rev.0 - 12/2016
CN3 signal
ON
Press the RUN/
(Terminal 1
OFF
and 3)
the RCS
ON
Unit
OFF
operation
"6.1.1 Available
"6.1.1 Available ports".
CN3 signal
ON
(Terminal 2
OFF
and 3)
CN3 signal
ON
(Terminal 1
OFF
and 2)
Control using
the RCS
ON
OFF
Unit
operation
STOP switch
Time
ports". (Example: terminal 2 and 3 of CN3)
(Example: terminal 1 and 2 of CN3)
Time
6