5 Optional functions
Indoor units input and output signals
SMGB0137 rev.0 - 05/2021
97
5
Optional output signals
? NOTE
If an input signal is set, the on-screen display on the remote controller automatically changes to the following.
Indication Output signal Application Port
00 Not set Not set
• CN7 or CN8
• Only CN7 for RPK units
01 Operation signal
This signal permanently controls the status of the unit.
? NOTE
It is extremely useful for centralised applications.
• CN7 or CN8
• Only CN7 for RPK units
02 Alarm signal
This signal enables devices that protect and indicate any
faults in the unit.
? NOTE
It is extremely useful for rooms in which air conditioning must
remain on at all times.
• CN7 or CN8
• Only CN7 for RPK units
03 Cooling signal
This signal controls the status of the compressor.
? NOTE
It is extremely useful for controlling the thermostat switched
o on indoor units.
• CN7 or CN8
• Only CN7 for RPK units
04
Thermo-ON signal
during cooling
It is extremely useful for controlling requests by the indoor
unit to enable the compressor.
• CN7 or CN8
• Only CN7 for RPK units
05 Heating signal
This signal controls the status of the compressor. It is
extremely useful for controlling the thermostat switched o
on indoor units.
• CN7 or CN8
• Only CN7 for RPK units
06
Thermo-ON signal
during heating
It is extremely useful for controlling requests by the indoor
unit to enable the compressor.
• CN7 or CN8
• Only CN7 for RPK units
07 Total Heat Exchanger
• CN7 or CN8
• Only CN7 for RPK units
08 Not used
• CN7 or CN8
• Only CN7 for RPK units
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