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Explanation – module designed to communicate with LG compressor unit, ARUN model series, power code set to
56kW, software version 4.3, user software 3, assigned station / address number "1" for communication with
ARUM--- outdoor unit.
Notice:
If no address has been assigned to the module, the symbol "- - " will be displayed in the appropriate position
for the address in the introductory sequence – i.e. the system did not auto-address successfully, the outdoor
compressor unit does not communicate with the KM113.22MV2 module.
If several communication modules are connected to one outdoor compressor unit, each module must have
different address.
Upon delivery, the module is delivered with the preset address "1".
After these initial sequences, the display will show current status of the operation request
Example
"cO ... -1 ... 6""
Explanation: cooling operating mode, no operation allowed, no power demand, current temperature of the input
refrigerant piping to the heat exchanger in HVAC -1 °C (blue sensor), on the output +6 °C (red sensor).
Refrigerant temperature display range MIN = -9, MAX= 99.
Attention:
If the power code is set incorrectly, the safety function of the external compressor unit may be activated.
When setting the power code, both the module and the device must be without voltage (changing the power
code is accepted by the module when the power supply is activated).
Notice:
If several communication modules are connected to one outdoor compressor unit, each module must have a
different address. The address of the communication module(s) for internal communication between the
outdoor unit and the modules is assigned automatically during the auto-addressing process (the process is
activated from the outdoor unit).
ADDRESS OF COMMUNICATION MODULE FOR COMMUNICATION WITH COMPRESSOR UNIT:
The address of the communication module(s) for internal communication between the outdoor unit and the
modules is assigned automatically during the auto-addressing process. The process is activated from the
outdoor unit (see the relevant manual for the outdoor compressor unit).
Display of the assigned address - see section "Introductory information sequence".
COMMUNICATION MODULE ADDRESS FOR CENTRAL CONTROL IN THE LG SYSTEM:
The
address
of
the
communication
module(s)
for
central
control
via
the
LG
protocol
(central
controller/converter) is identical to the MODBUS address.
6.2 INTRODUCTORY INFORMATION SEQUENCE
Communication module functionality test
Activate the supply voltage - the display will show the introductory sequence:
cycle – basic information about hardware, settings and software - example:
ST
1
"LG ... Ar ... 56 ... So ... 4.3 ... So ... 3"
2
nd
cycle – basic information about hardware, settings, software and assigned address - example:
"LG ... Ar ... 56 ... So ...4.3 ... So ... 3 ... 1"
Meaning - module designed for communication with the LG compressor unit, ARUM / N model series, set power
56kW, software version 4.3, user software 3, assigned station number/address "1" (set on delivery).
After these initial sequences, the display will show the current status of the operation request - example:
"cO ... -1 ... 6""
2020/07/23
page 16
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