1592015610 User manual IC200D EVO GB rel1.0 10.11.2015_rev10 IC200D 92/192
After the dF09 counting the NTC probe of the combined defrost of the circuit #1 is compared to the dF10
setpoint, if the value is lower the defrost starts otherwise the unit runs in heat pump mode and when the
temperature decreases under dF10 the defrost immediately starts.
dF11 Temperature setpoint to end a combined defrost of the circuit #1.
It allows to set a temperature value to determine the end of a combined defrost.
When the NTC probe of the combined defrost of the circuit #1 becomes higher than dF10 setpoint the
defrost cycle stops.
dF12 Temperature setpoint to start a combined defrost of the circuit #2.
It allows to set a temperature value to determine the beginning of a combined defrost.
After the dF09 counting the NTC probe of the combined defrost of the circuit #2 is compared to the dF12
setpoint, if the value is lower the defrost starts otherwise the unit runs in heat pump mode and when the
temperature decreases under dF12 the defrost immediately starts.
dF13 Temperature setpoint to end a combined defrost of the circuit #2.
It allows to set a temperature value to determine the end of a combined defrost.
When the NTC probe of the combined defrost of the circuit #2 becomes higher than dF13 setpoint the defrost cycle stops.
dF14 All the resources on during the defrost of the circuit #1
0= Not enabled
1= Enabled
dF15 All the resources on during the defrost of the circuit #2
0= Not enabled
1= Enabled
dF16 Compressor step delay time in defrost.
dF17 Condensing fan control during defrost and dripping cycle
0= Not enabled
1 = Enabled in defrost
2= Enabled in defrost and in dripping time
If dF17 = 0: During the defrost the fan control is not active.
If dF17 = 1: when the condensing temperature/pressure value increases over dF18 the fans are turned on.
the fan control is determined by the same algorithm used in chiller mode.
If dF17 = 2: during the dripping time (dF08 <>0) the fan are turned on for the time duration set in dF08 .
dF18 Pressure / temperature setpoint to force the fans on during the defrost
When the temperature/pressure rises over this value the fan are turned on at the maximum speed.
dF19 Time delay before starting a forced defrost
It determines a delay time before starting the defrost cycle
dF20 Temperature / pressure setpoint to force a defrost
It determines a temperature/pressure setpoint under which the dF19 starts counting, when dF19 is expired if
the temperature/pressure is still lower than dF20 the defrost is immediately executed.
ATTENTION If during the dF19 counting the temperature rises over df20+dF21(differential) the process is
aborted and the dF19 time reloaded.
dF21 Forced defrost differential
dF22 defrost mode for unit with two circuits
Operative mode:
0= Independent
1= The condition are satisfied in both circuits
2= At least one circuit has reached the start condition
dF23 It determines the end of the defrost for unit having two circuit and common condensing ventilation
Operative mode:
0= Independent
1= The end defrost condition are satisfied In both circuits
2= At least one circuit has reached the end defrost condition
dF24 Start / stop defrost probe
Start / stop defrost from analog input
0= start and stop with condenser temperatur / pressure probe
1= start with evaporator pressure probe / stop with condenser temperatur / pressure probe
2= start with condenser temperatur / pressure probe / stop with evaporator pressure probe
3= start and stop with evaporator pressure probe
37.10 DEFROST DYNAMIC SET POINT
It is possible to modify the start defrost set point according to outside temperature.
Offset set point if dF37>0
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