4.2.9 Communication
Lost communication
The unit will automatically detect if an external MMI has been connected to the application mod-
ule. Once it has been detected it will ensure that the system will not continue to run, when the
communication has been lost.
When the communication is lost the entire system will stop and a communication error will be
prompted. The communication will stay off until there will be a valid frame on the bus. The error
will be erased and the system will start to run again.
Set main to off when communication is lost.
When choosing this setting the main will be set to off when the communication is lost. Through
that the system will stop. The system will remain off until the MMI has set the main switch to on
again.
Protection of settings
A coded privacy function protects customers’ settings from being read by third parties.
The code must be verified by entering twice.
Settings:
Name Default Min value Max value Step Unit
Node number 1 1 247 1 -
Bits per second 19200 19200 9600 9600
0 = Disabled
1 = Enabled
Communication 0 0 1 1 Seconds
Communication timeout 900 15 7200 1 -
Setting protection code &
status
0 0 9999 1 -
Twin Configuration
Cut in 2
Cut in
Cut out 2
Cut out
Compressor 2 ON
Compressor 2 OFF
Compressor 1 ON
Compressor 1 OFF
4.2.8 Twin function
When operating in twin configuration, the thermostat cut-in and cut-out settings for each of the
two compressors can be established independently. In Synchronic mode only one set point is
valid for both compressors.
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