Output Signals (Cn7) - Hitachi RAS-(3-6)HVNC1(E) Service Manual

6 Optional functions
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Output signals (CN7)
Ind.
No setting application
0
Operation signal
01
Alarm signal
02
Compressor ON signal
03
Defrost operation signal
04
N O T E
Do not set same function to multiple input port. If set, the higher input terminal number will be cancelled.
166
SMGB0087 rev.0 - 12/2013
Output signal
No setting
This signal allows to pick up the machine's operation signal. This is
very useful to start up additional systems such as humidifiers, fans
and other additional air-conditioning systems.
This signal picks up the machine's alarm. This is very useful to warn
that an alarm has been tripped.
This single allows to pick up the compressor's operation signal. It is
very useful for checking signals during remote-control operation and
for the interlock of the outdoor unit.
This signal allows to pick up the defrosting of the unit. This is very
useful to know how the indoor unit is operating if there is an abnor-
mal situation.
Application