Hitachi RPIM - Page 199

Indication Input signal Application
Remote control screen (input
signal)
Port
00
Not set Not set
• CN8
• CN7 for
RPK units
01
Operation signal
This signal permanently
controls the status of the
unit.
N O T E
It is extremely useful
for centralised
applications.
• CN8
• CN7 for
RPK units
02
Control by field-supplied
room thermostat
(heating)
This signal enables
devices that protect and
indicate any faults in the
unit.
N O T E
It is extremely useful
for rooms in which air
conditioning must
remain on at all times.
• CN8
• CN7 for
RPK units
03
Function 1: remote on/off
of the unit (by contact)
This signal controls the
status of the
compressor.
N O T E
It is extremely useful
for controlling the
thermostat switched
off on indoor units.
• CN8
• CN7 for
RPK units
04
Function 2: unit on (by
pulse)
It is extremely useful for
controlling requests by
the indoor unit to enable
the compressor.
• CN8
• CN7 for
RPK units
6 Optional functions
187
SMGB0063 rev. 1 - 10/2010
6