EWWP045~06 ECB1~3MUW
Packaged water-cooled water chillers
4PW30041-1A
Operation manual
18
Tasks of the history menu
Checking the safety info and the unit status after a reset
The information available in the safeties menu is also stored in the
history menu, where it is stored after resetting the unit or the module.
In this way, the history menu provides a means of checking the unit
status at the moment of the latest 10 shutdowns.
To check the safety info and the unit status, proceed as follows:
1
Enter the
HISTORY MENU
through the main menu. (Refer to the
The controller enters the
UNIT HISTORY
screen which contains the
following information: the number of shutdowns, the unit safety
which caused the most recent shutdown and the basic
information at the moment of this shutdown.
2
Press the
g
and
h
keys to consult the
M1
,
M2
or
M3 HISTORY
screens.
3
Press the
q
key to see the detailed information.
Tasks of the info menu
Consulting additional unit information
1
Enter the
INFO MENU
through the main menu. (Refer to the
The controller enters the
UNIT INFORMATION
screen which contains
the following information: the unit name, the refrigerant used and
the manufacturing (serial) number.
2
Press
h
to consult the next
UNIT INFORMATION
screen.
This screen contains information about the controller's software
version.
Tasks of the input/output menu
Checking the status of the inputs and outputs
The input/output menu provides a means of checking the status of
the digital inputs and the status of the relay outputs.
The locked digital inputs are:
■
M1
,
M2
or
M3 SAFETY
: indicates the status of the general module
safeties.
■
FLOWSWITCH
: indicates the status of the flowswitch, activated or
deactivated.
■
REVERSE PHASE PROTECTOR
: indicates the status of this safety.
The changeable digital inputs are:
■
REM. C/H
: indicates the status of the remote cooling/heating
switch.
■
DUAL SETPOINT
: indicates the status of the remote dual setpoint
switch, setpoint 1 or setpoint 2.
■
REM. ON/OFF
: indicates the status of the remote on/off switch.
■
CAP LIM1/2/3
: indicates the status of the enable/disable capacity
limitation switch(es).
The locked relay outputs are:
■
LPBYPASS 1/2/3
: indicates whether the low pressure of the
module is in bypass mode or not.
■
C11, C12, C21, C22, C31, C32
: indicates whether the compressor is
running or not.
■
PUMP/GEN OPER
: indicates the status of this voltage free contact.
It is activated if the pump should be ON, which also indicates
general operation.
The changeable relay outputs are:
■
REV. VALVE (C/H)
: indicates whether the unit is running in cooling
or in heating.
■
2ND EVAP PUMP
: indicates the status of the second evaporator
pump.
■
CONDENSER PUMP
: indicates the status of the condenser pump.
■
100% CAPACITY
: indicates when the unit is working at 100%.
To check the inputs and outputs, proceed as follows:
1
Enter the
I/O STATUS MENU
through the main menu.
(Refer to the
chapter
.)
The controller enters the first
DIGITAL INPUTS
screen.
2
Consult the other screens of the input/ouput menu using the
g
and
h
keys.
Tasks of the user password menu
Changing the user password
Access to the user settings menu and the setpoints menu is
protected by the user password (a 4-digit number between
0000
and
9999
).
To change the user password, proceed as follows:
1
Enter the
USERPASSWORD MENU
through the main menu
.
(Refer to
The controller will request the password.
2
Enter the correct password using the
g
and
h
keys.
3
Press
q
to confirm the password and to enter the password
menu.
The controller requests the new password.
4
Press
q
to start the modification.
The cursor is positioned behind
NEW PASSWORD
.
5
Enter the new password using the
g
and
h
keys.
6
Press
q
to confirm the new password.
When the new password has been confirmed, the controller will
ask to enter the new password a second time (for safety
reasons). The cursor is positioned behind
CONFIRM
.
7
Enter the new password again using the
g
and
h
keys.
8
Press
q
to confirm the new password.
NOTE
The actual password will only be changed when the
new password and the confirmed password have the
same value.
