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Configuration
Installer and user reference guide
125
LREN8~12A7 + LRNUN5A7
CO₂ ZEAS outdoor unit and capacity up unit
4P704142-1 – 2022.08
DS1
Target evaporating temperature
OFF
ON
1 2 3 4
–30°C
OFF
ON
1 2 3 4
–35°C
OFF
ON
1 2 3 4
–40°C
(a)
Factory setting
Use DS2 to define a system layout with or without capacity up unit.
NOTICE
When installing a capacity up unit it is mandatory to put switch 4 ON.
If DS2 is not set correctly, the capacity up unit will NOT operate and no error code is
displayed on the PCB of the outdoor unit.
DS2
Capacity up unit installation
OFF
ON
1 2 3 4
With capacity up unit
(a)
OFF
ON
1 2 3 4
Without capacity up unit
(a)
If there is no electrical connection to the capacity up unit, an error code will be displayed
on the outdoor unit.
Push buttons
Use the push buttons to make the field settings. Operate the push buttons with an
insulated stick (such as a closed ball-point pen) to avoid touching live parts.
7-segment display
The display gives feedback about the field settings, which are defined as [Mode-
Setting]=Value. Value is the value we want to know/change.
Example:
Description
Default situation
Mode 1
Mode 2
