12. Optional functions
TCGB0075 rev.0 - 11/2012
149
12
12.1.2 Optional external output signals (by 7-segment display)
Unit switches to this mode when DSW4-8 is turned ON during unit stoppage.
The unit has the following described optional signals:
Code
Name
Description
Port
o1
Operation signal
This signal allows control of the machine status at all times; it is very useful
for centralized applications.
The signal will be enabled when Thermo ON operation
CN7b / 1-3
o2
Alarm signal
This signal allows activation of mechanisms that protect from and warn of
possible failures in the unit.
The signal will be enabled when the unit is in alarm (indoor or outdoor)
CN7b / 1-4
o3
Not available
-
CN7b / 1-5
o4
Thermo-OFF signal
during circuit 1
Signal is enabled when circuit 1 is operating in Demand-OFF and circuit 2 in
Thermo ON.
The signal will be enabled when Demand OFF in circuit 1 and circuit 2 in
Thermo ON.
CN7b / 1-6
12.2 Outdoor unit
12.2.1 Optional functions
Outdoor unit has the following signals that are described in the following table. These signals are set up through the PCB
of the outdoor unit.
Output signals (by 7-segment)
Ind.
Output signal
Application
Port
0
Nº setting application
Nº setting
-
01
Operation signal
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.
CN7
02
Alarm signal
This signal picks up the machine’s alarm. This is very useful to warn that an alarm has
been tripped.
CN7
03
Compressor ON signal
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.
CN7
04
Defrost operation signal 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 abnormal situation. .
CN7
N O T E
Do not set same function (01~04) to multiple input port.