Order No.: 900220.020
V2.24
3/11
SOFTWARE .12
Adjustment options
Key 1: UP
Defrosting can be started any time by pressing the UP-key for 3 seconds. During the
process of defrosting the respective LED is illuminated. The LED flashes if defrosting is
requested, but may not be started yet due to interlock conditions.
Key 2: DOWN
The DOWN key, among other functions, can acknowledge an alarm. The internal
buzzer is then switched off.
Key 3:
(if available)
Different functions are assigned to this key by help of parameters, see parameter b1.
(direct switching of a contact, standby function…). The key must be pressed for at least
half a second.
Key 5: SET
While SET key is pressed, the setpoint is indicated.
In addition, the SET key is used for setting parameters
.
Key 6: Standby
With this key the controller is switched to standby mode. Pressing the key a second
time, restarts the unit. The key can be deactivated by setting the respective parameter,
see parameter b3.
First control level:
Parameter setting for the main setpoint.
If none of the keys is pressed, the display indicates the actual value of the temperature. Pressing
the SET key, the setpoint shows on the display.
If the setpoint is to be changed, the SET key is to be kept pressed while adjusting the setpoint with
the keys UP and DOWN.
Please note that the setpoint can only be changed within the set setpoint limits.
General reference
Note that the value is transferred to the captive memory and is safe also after power failure.
Para-
meter
Function
Adjustment range
Standard
setting
Customer
setting
S1
Setpoint
r1...r2
0.0°C
2.0°C
1
2
3
4
5
6
