6 Operation
RITTAL Compact split cooling unit assembly and operating instructions
33
EN
In principle, the programming is identical for all edit-
able parameters.
To enter programming mode:
• Press button 2 (“Set”) for approx. 5 seconds.
The controller is now in programming mode. While in
programming mode, if you do not press any buttons
for approx. 30 seconds, the display will first flash,
then the controller will switch back to normal display
mode. The “Esc” display indicates that any changes
made have not been saved.
• Press the programming buttons
▲
(°C) or
▼
(°F) to
switch back and forth between the editable para-
meters (see Tables 3 and 4).
• Press button 2 (“Set”) to select the displayed
parameter for editing.
The current value of this parameter is displayed.
• Press one of the programming buttons
▲
(°C) or
▼
(°F).
The “Cod” display will appear. In order to be able to
change a value, you must enter the authorisation
code “22”.
• Keep the programming button
▲
(°C) held down
until “22” appears.
• Press button 2 (“Set”) to confirm the code.
You can now alter the parameter within the preset
limits.
• Press one of the programming buttons
▲
(°C) or
▼
(°F) until the required value appears.
• Press button 2 (“Set”) to confirm the change.
You can now alter other parameters in the same way.
There is no need to re-enter the authorisation code
“22”.
• To exit programming mode, press button 2 (“Set”)
again for approximately 5 seconds.
“Acc” will appear in the display to indicate that the
changes have been saved. The display will then
switch back to regular operation (safe internal tem-
perature).
You can also program the Comfort controller using a
diagnosis software package (Model No. SK 3159.100),
the supply of which also includes a connection cable
to the PC. The cable connector on the rear of the
Comfort controller display serves as an interface.
6.1.4 Editable parameter
s
See also Fig. 9 on page 34.
Tab. 3: Editable parameters
Pro
g
r.
level
Di
s
play
s
creen
Parameter
Min.
value
Max.
value
Factory
s
ettin
g
De
s
cription
1
St
Setpoint for the
safe internal
temperature T
i
20
55
35
The setpoint of the safe internal temperature is
preset at the factory to 35°C and may be altered
within a range of 20° – 55°C.
2
Fi
Filter mat
monitoring
10
60
99
(= off)
To activate filter mat monitoring, set the display to
at least 10 K above the temperature differential
displayed in programming mode “Fi”. Filter mat
monitoring is preset to “deactivated” in the factory
(99 = off).
3
Ad
Master-slave
identifier
0
19
0
This function does not apply to units 3126.230 and
3126.240.
4
CF
Temperature
conversion
°C/°F
0
1
0
The temperature display can be switched from
°C (0) to °F (1). The corresponding LED displays
the current unit of temperature.
5
H1
Setting for
switching
difference
(hysteresis)
2
10
5
The cooling unit is preset in the factory to a
switching hysteresis of 5 K. This parameter should
only be changed in consultation with us.
Please contact us for advice.
6
H2
Differential for error
message A2
3
15
5
If the safe internal temperature exceeds the
setpoint by more than 5 K, then error message A2
(safe internal temperature too high) appears on
the display.
If necessary, the differential may be altered here
within the range of 3 – 15 K.
