If the compressor has to keep running this can happen either permanently or with a ratio of on and
off times, which can be adjusted with parameter c5. The off-time is 15 minutes and not adjustable.
c4: Switching delay of the compressor relay
If demanded the compressor can switch immediately or with a time delay.
c5: Time for “compressor on” at sensor error
(see c3)
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 with the clock or by pressing the key "manual defrosting" for at least
3 seconds. This automatically restarts the defrosting interval. If defrosting is only started with the
clock the defrosting interval can be deactivated.
If the value of d0 is changed this effects only the next defrost cycle.
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.
d3: Defrosting time limit
Here the maximal defrosting time can be adjusted. According to this time frame, defrosting is
terminated even if the evaporator is not warm enough to be ice-free.
d4: Function after "cooling on"
After “cooling on” cooling can start immediately and defrosting starts after the defrost interval or
defrosting can start immediately and then the defrost interval is started.
For deep-freezing applications the immediate defrosting is recommended since a defrost cycle
might be skipped in case of a power failure and therefore the evaporator might be iced up.
d5: Defrost delay after “cooling on”
After “mains on” the defrosting starts after the here adjusted delay (only effective if d4=1).
Among other things this is to prevent energy peaks.
d6: Indication of the refrigerating chamber temperature during defrosting
It is to be assumed that the cold room temperature slightly rises during the defrosting process.
d6=0 indicates the actual cold room temperature during the defrosting process. d6=1 indicates the
temperature determined just before the start of defrosting until the setpoint of the refrigerating
chamber is reached again after the defrosting process is completed. Thus, an irritation of the
operator during defrosting can be avoided. In the case of emergency, the display flashes and the
actual temperature of the cold room is indicated.
d7: Drainage time
Completed defrosting is immediately followed by a drainage period, in order to let the evaporator
drip off. During drainage time, the exits compressor and ventilator are switched off.
d8: Alarm suppression time after defrosting
A temperature alarm caused by the warming up of the refrigerating chamber during defrosting will
be suppressed for this time period after defrosting has finished.