Danfoss AK-CC55, User Manual, Page: 47 / 64

Function Description Values Code Short name
S4 Air OFF evap. A Actual sensor value u16 u16 S4 air temp.
Night condition Status at the day-/night operation (night operation:
on/off)
0=OFF, 1=ON u13 u13 Night Cond.
Thermostat cutin
temp.
Readout of the actual cutin value for the thermostat u90 u90 Cutin temp.
Thermostat cutout
temp.
Readout of the actual cut out value for the thermostat u91 u91 Cutout temp.
Thermostat runtime
A
Read the ongoing cutin time for the thermostat or the
duration of the last completed cutin
u18 u18 Ther runtime
Thermostat band Readout of which thermostat used for regulation: 1=
Thermostat band 12= Thermostat band 2
1=Band 1, 2=Band 2 u86 u86 Ther. band
Air heater Actual status of output function 0=OFF, 1=ON u84 u84 Heat relay
Thermostat mode Here it is defined how the thermostat is to operate. Ei-
ther as an ordinary ON/OFF thermostat or as a modu-
lating thermostat.When operation is ”modulating” the
valve will limit the flow of refrigerant so that the tem-
perature variation will be less than for the ON/OFF
thermostat.The thermostat differential (r01) must not
be set lower than 2K for ""modulating"".In a decentral-
ised plant you must select the ON/OFF thermostat
setting."
2=Modulating, 1=ON/OFF r14 r14 Therm. mode
Cutout 1 Set point. The thermostat’s cutout value when the
given thermostat band is in use
r00 r00 Cutout
Differential 1 When the temperature is higher than the set
the set differential, the compressor relay will be cut in.
It will cut out again when the temperature comes
down to the set cutout limit
r01 r01 Differential
Cutout 2 Set point. The thermostat’s cutout value when the
given thermostat band is in use
r21 r21 Cutout 2
Differential 2 When the temperature is higher than the set
the set differential, the compressor relay will be cutin.
It will cutout again when the temperature comes
down to the set cut-out limit
r93 r93 Diff Th2
Max cutout limit Setpoint limitation - The controller’s setting range for
the thermostat setpoint may be narrowed down, so
that much too high or much too low values are not
set accidentally - with resulting damages.To avoid a
too high setting of the setpoint, the max. allowable
reference value may be lowered
r02 r02 Max cutout
Min cutout limit Setpoint limitation - The controller’s setting range for
the thermostat setpoint may be narrowed down, so
that much too high or much too low values are not
set accidentally - with resulting damages.To avoid a
too low setting of the setpoint, the min. allowable ref-
erence value may be increased
r03 r03 Min cutout
Thermostat sensor
S4 %
Selection of thermostat sensor. Here you define the
sensor the thermostat is to use for its control function.
S3, S4, or a combination of them. With the setting 0%,
only S3 is used. With 100%, only S4.
r15 r15 Ther. S4 %
Thermostat sensor
S4 % night
Selection of thermostat sensor S4% during night op-
eration with night blinds. Here you define the sensor
the thermostat is to use for its control function. S3, S4,
or a combination of them. With the setting 0%, only
S3 is used. With 100%, only S4.
r61 r61 Ther.S4% Ngt
Night offset Night setback value.The thermostat’s reference will be
the setpoint plus this value when the controller
changes over to night operation.
r13 r13 Night offset
S4 frost protection Frost protection on S4 air temperature. If the S4 tem-
perature sensors measures a temperature lower than
the set limit, refrigeration will be stopped in order to
protect produce from ice formation. Refrigeration will
start again when the S4 temperature has risen 2K
above the set limit
r98 r98 S4 Min Lim
Air heater neutral
zone
Heat function. Set the width of the Neutral Zone for
changeover from cooling to heating "
r62 r62 Heat NZ
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AK-CC55 Compact