defrosting process would probably be blown into the refrigerating chamber. The ventilator delay is
ineffective if the ventilator is on during defrosting and the drainage time is set to “0”.
F7: Ventilator function at cooling operation
At F7=1 the ventilator is always on (except for a defrosting process possibly, see parameter F4).
At F7=2 the ventilator is always on or off together with the compressor.
At F7=3 the ventilator is switched on whenever the compressor is on and the evaporator
temperature (sensor F2) is below the refrigerating chamber temperature (sensor F1). The ventilator
is switched off whenever the compressor is switched off, whereas parameter F5 is not active. In
the case of sensor error the ventilator reacts as in the setting F7=2.
F8: Ventilator revolution number (data record 1) at normal cooling operation
Variable 1 for ventilator revolution number at normal cooling operation.
F9: Ventilator revolution number (data record 1) at defrosting
Variable 1 for ventilator revolution number at defrosting.
F10: Kick-start (in seconds)
If necessary, this is an option to set a time during which the ventilator starts with the max. number
of revolutions for stable operation. This parameter is only efficient, if the ventilator is newly started.
F11: Ventilator revolution number (data record 2) at normal cooling operation
Variable 2 for ventilator revolution number at normal cooling operation.
F12: Ventilator revolution number (data record 2) at defrosting
Variable 2 for ventilator revolution number at defrosting.
Y0: Indication mode of the actual value of sensor F2
At Y0=0 the actual value of sensor F1 is always indicated. The actual value of sensor P2 can be
indicated with parameter P2 (second control level).
At Y0=1 the actual value of sensor F2 is indicated when pressing the DOWN key.
Y1: Setpoint thermostat 2
In case that sensor 2 is not used as evaporator sensor, but as actual value for a second
independent thermostat, Y1 has the function of setting the setpoint for the latter. If parameters of a
function key are set appropriately (parameter bx=2), the setpoint can also be adjusted directly with
the respective function key.
Y2: Hysteresis thermostat 2
The hysteresis is set asymmetrically at the desired value. At cooling contact the hysteresis works
on one-sided upward and at heating contact one-sided downward.
Y3/Y4: Setpoint limitation (maximum/minimum) thermostat 2
These parameters limit the adjustment range of the desired value Y1, in order to avoid that the end
user sets inadmissible values for the plant. The entire adjustment range is equivalent to the
maximum work range of the PTC sensor.
Y5: Switch mode for the exit of thermostat 2
Heating function means that the contact falls when the pre-set desired value is reached, i.e. power
interruption. In cooling functions the contact only tightens if the actual value is above the pre-set
setpoint.
Y6: Function at error of sensor F2
Here is determined whether the respective output contact drops or tightens in case of a sensor F2
error.
