Safety
Instructions
Product
Description
Installat
io
n
Electrical
Connection
Starting up &
Operation
Maintenance
& Repair
Dismantling &
Disposal
Condensing Unit For Refrigeration Networks
3.8.4 Back-up in case of communication cable or controller failure
In case of communication breakdown or controller failure, all units will start to operate in
“stand alone mode”.
To enable this (and to prevent a shortage of capacity due to compressors not starting),
setpoints for suction pressure should be set as in the Master controller (parameter P0),
but with a slightly higher values (0.1 bar higher versus the value of P0 in the Master unit).
3.8.5 Parameters information
3.8.5.1 Parameters
The configuration parameters can be protected by a numerical password. A value of “0”
disables this protection (default password: 12).
To select the parameter configuration:
Press the Prg button for more than 5 seconds
In case of password value equal to “0”:
The first modifiable parameter code is displayed (/1).
To modify parameters see Parameters modification below.
In case of password value not equal to “0”:
A flashing 0 is displayed
Press or until the password value is displayed.
Press Sel to confirm password
The first modifiable parameter code is displayed (/1).
To modify parameters see Parameters modification below.
3.8.5.2 Parameters modification
Press or to show the code of the parameter that has to be changed;
Press Sel to display the selected parameter value;
Press or to increase or decrease the value;
Press Sel to temporally confirm the new value and display its code
Repeat the procedure from the beginning "press or to show..." to modify another
parameter, etc.
To exit modifying the parameters with the new values:
Press Prg to confirm the new values and exit the parameter modification
procedure.
To exit without modifying any parameter:
Do not press any button for at least 60 seconds (TIME OUT).
For more information please refer to the corresponding application guideline (C6.1.5/E,
Part no.: 3136444), which is provided with the unit.
C6.1.4/0305/E
30
Part no: 3136433
