Function
Parameter
Remark
Normal display
The display shows the suction pressure in temperature.
Regulation
Min. Pressure
The lower setpoint for suction pressure. See instructions for CDU.
r01
Max. Pressure
The upper setpoint for suction pressure. See instructions for CDU.
r02
Demand Operation
Limits the compressor speed of the CDU. See instructions for CDU.
r03
Silent Mode
Enable/disable silent mode.
Operating noise is suppressed by limiting the speed of the outdoor fan and compressor.
r04
Snow Protection
Enable/disable snow protection functionality.
To prevent snow from building up on the outdoor fan during winter shutdown, the outdoor fan is
operated at regular intervals to blow off the snow.
r05
Main Switch
Start/stop the CDU
r12
Reference source
The CDU can either use a reference that is configured with rotary switches in the CDU, or it can use
the reference as defined by parameter r01 and r02. This parameter configures which reference to
use.
r28
For Danfoss Only
SH Guard ALC
Cut-out limit for ALC control (oil recovery)
r20
SH Start ALC
Cut-in limit for ALC control (oil recovery)
r21
Oil ALC setpoint LBP
(AK-CC55 parameter P87,P86)
r22
SH Close
(AK-CC55 parameter ---)
r23
SH Setpoint
(AK-CC55 parameter n10, n09)
r24
EEV force low OD after oil recovery
(AK-CC55 AFidentForce = 1.0)
r25
Oil ALC setpoint MBP
(AK-CC55 parameter P87,P86)
r26
Oil ALC setpoint HBP
(AK-CC55 parameter P87,P86)
r27
Miscellaneous
If the controller is built into a network with data communication, it must have an address, and the
system unit of the data communication must then know this address.
The address is set between 0 and 240, depending on the system unit and the selected data
communication.
o03
Evaporator controller addressing
Node 1 Address
Address of the first evaporator controller
Will only be shown if a controller has been found during scan.
Io01
Node 2 Address
See parameter Io01
Io02
Node 3 Address
See parameter Io01
Io03
Node 4 Address
See parameter Io01
Io04
Node 5 Address
See parameter Io01
Io05
2.8 Survey of functions
User Guide | Optyma™ iCO2
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