The weighing is only effective, if the sensor F2 is evaluated as evaporator sensor with parameter
P4. For the defrost control the not weighed value of sensor F2 is effective.
r0: Hysteresis for the compressor contact
Parameter r0 sets the temperature margin between switching off and switching on of the
compressor. A small hysteresis permits a more exact regulation, however also leads to more
frequent switching of the compressor. The hysteresis is set one-sided above the setpoint.
r1: Setpoint limitation (minimum)
r2: Setpoint limitation (maximum)
These parameters limit the adjustment range of the setpoint S1, in order to avoid that the end user
sets inadmissible values for the plant.
The entire adjustment range is equivalent to the maximum operating range of a PTC sensor.
c0: Start protection of the compressor after "cooling on"
After cooling is switched on (e.g. by switching on the mains voltage) the start of the compressor is
retarded until the protection running time is over. This secures e.g. that several cooling units do not
start at the same time and load the electricity supply net.
c1: Start protection of the compressor after compressor start
This time protection starts when the compressor is switched on. After switching the compressor off,
a renewed switching on is impossible until this protection time runs out. This prevents from too
frequent switching-on of the compressor and thus increases its life span.
c2: Start protection of the compressor after compressor stop
This time protection starts when the compressor is switched off. After switching the compressor off,
a renewed switching on is impossible until this protection time runs out.
c3: Function in the case of error of refrigerating chamber sensor F1
Here is determined whether the compressor keeps running or not in the case of an error of the
refrigerating chamber feeler F1. When deep-freezing, the compressor should normally continue
running, in order to prevent de-frosting of the goods. At the normal cooling range above 0 °C, a
continuation, however, could lead to frost damages.
In the operation mode "emergency operation" the compressor is switched on and off in 5 minute
intervals. This results in a clock operation with 50 % cooling performance.
d0: Defrosting interval
The defrosting interval defines the time, after which a defrosting process is started. With the
beginning of the defrosting process, the defrosting interval starts anew, which results in periodic
defrosting in firm intervals.
Defrosting can also be started by pressing the key "manual defrosting" for at least 3 seconds. This
automatically restarts the defrosting interval.
After switching-on cooling, the controller immediately initiates cooling and starts the first defrosting
process after this interval.
d1: Defrosting mode
This parameter determines whether defrosting is effected by an electrical heating coil (d1=0) or by
means of hot gas (d1=1).
d2: Defrosting temperature
The defrosting process is terminated when the evaporator has reached the adjusted temperature.
(Always provide good thermal contact between evaporator sensors and lamellas).
In case that defrosting takes too long, the time limit set in "d3" will come into effect.
