F5: Ventilator delay time after defrosting
Following drainage time d7, start of the ventilator can be delayed until the evaporator has
sufficiently cold air again. If the ventilator started immediately, the warm air resulting from the
defrosting process would probably be blown into the refrigerating chamber
F6: Ventilator control
With F6=0 the ventilator is controlled depending on ventilator setpoint F1
With F6=1 the ventilator control is dynamic.
In this case the absolute setpoint adjusted with F1 is no more effective but the ventilator setpoint
depends directly on actual value of the refrigerating chamber. The ventilator setpoint results of the
refrigerating chamber temperature minus the relative evaluated temperature set in F1.
Example: settings F1 = 5, F2 = 2, F6 = 1
The ventilator setpoint is always 5K below the refrigerating chamber temperature. If the
refrigerating chamber temperature is 10°C the ventilator will switch off if the evaporator
temperature is above 5°C and the ventilator will switch on if the evaporator temperature falls below
3°C. If the refrigerating chamber temperature is 9°C the ventilator will switch off if the evaporator
temperature is above 4°C and the ventilator will switch on if the evaporator temperature falls below
2°C.
This variant makes it possible to switch the ventilators delayed dependent on temperature at each
temperature start (start-up relief) or to switch them off delayed after compressor stop (usage of the
refrigerating capacity of the evaporator).
F7: Ventilator revolution number during normal cooling operation
F8: Ventilator revolution number during night time reduction
F9: Ventilator revolution number during defrosting
The ventilator speed can be set infinitely variable by the software. In “Off” condition the ventilator
speed is reduced to 0. Irrespective of this setting there is always a “kick-start” for the ventilator, i.e.
it starts with full speed for 10 seconds.
During night time reduction or defrosting you can choose a different speed (night time operation is
controlled by parameter H21).
b0: Function of switching input E1
b2: Function of switching input E2
A function of the list can be assigned to both of the switching inputs.
b1: Switching sense of switching input E1
b3: Switching sense of switching input E2
To execute an action the switching inputs either have to be opened or closed.
b4: Locking of switching function if “cooling off”
(see table on next page)
Any switching functions can be assigned to the three keys “Light”, “Red” and “Blue”. Sometimes it
is desirable that the switching functions are only active if cooling is switched on. This can be set
with this parameter for every individual key.
“Independent”:
the switching function is
not
dependent of the condition of cooling.
“Off with cooling off”:
switching function is locked if cooling is switched off.
An additional special function can be assigned to the blue key. The second setpoint (Y1) for the
analogue input can be adjusted directly by the blue key (please don’t forget to release the
switching function by means of “Y0” and to assign a corresponding output with the “U”-parameters
– recommendation: usually“U4” is available if the blue key is left out).