24
Item 0 Password
A password must be entered in order to
access the test function or modify a user
configuration. The password has a
default value of 11. This value can be
modified by Carrier Service with the aid
of special tools. If the message “no” is
displayed in block 2, it means that a
password must be entered or was entered
incorrectly. The message “Good” means
that the password has been validly
entered or that the password already
entered is still valid. The controller
automatically deactivates the password
after 5 minutes without activity (i.e. no
buttons pressed) or after powering up.
For example: “enter password”.
OPERATION PRESS BLOCK 3 BLOCK 1 BLOCK 2
KEY LED DISPLAY DISPLAY
Hold down the MENU button
until the LED for Configuration
lights. Block 2 displays “no”,
showing that the password must
be entered
.
Press the button to authorise
modification of the value
associated with item 0. The
Configuration menu LED flashes
to show that the value can be
modified.
Press until the value 11 is
displayed in block 2. The
Configuration menu LED keeps
flashing.
Press the button again to
validate. The Configuration menu
LED stops flashing. “Good” is
displayed if the password is
correct.
Item 1 Select lead circuit
Default:0
Range: 0, 1 or 2
Config.:0 = automatic depending on the
number start-ups of each circuit
1 = Circuit A leader
2 = Circuit B leader
Item 2 Circuit loading sequence
Default:0
Range: 0 or 1
Config.:0 = Equal circuit loading
1 = Priority loading on one circuit
NOTE: This configuration is not available on single-circuit
units.
Item 3 Delay at start-up delay
Default: 2 minutes
Range: 2 to 15 minutes
NOTE: This value is reinitialised after power up or when
both circuits are halted by a local, remote or CCN
command.
No compressor will be started up until this pause has
expired. However, the evaporator water pump command
will be activated immediately. The safety lockout loop will
not be checked until the pause has expired.
0
0No
00
011
0 Good
Item 10 EXV status/test - Circuit A
Item 11 EXV status/test - Circuit B
In test mode, the direction arrows display
“OPEN” so as to force the valve to its
maximum open position.
Item 12 Variable speed fan or condenser water
valve status/test - Circuit A
Item 13 Variable speed fan status/test - Circuit
B
In test mode, each element can be tested at a
value in the range 0 to 100%. Item 13 is not
applicable to air-cooled units.
Item 14** Evaporator and condenser water pump
status/test
Item 15* Evaporator and heat reclaim condenser
heater status/test
Item 16 Heat reclaim condenser water valve
output status/test - see item 13
Item 17* Heat reclaim mode solenoid valve
status/test
Item 18 Local interface test
This item is only used in test mode. It
causes all the LEDs on the user interface to
light up or flash, so as to check that they are
working properly.
* See items 7 and 8
** See item 9
4.2.10 - Description of the CONFIGURATION menu
This menu can be used to display and modify user
configurations.
A configuration can only be modified when the machine is
fully stopped (LOFF). However, the password must have been
entered in the Configuration menu in order to access this
feature.
ITEM FORMAT DESCRIPTION
0 nn Password
«no» Password invalid
«Good» Password valid
1* b Lead/lag select
2* b Loading sequence select
3 nn Delay at start-up in minutes
4 b Select ramp loading
5 b Select reset type
6 b Select demand limit type
7 nn.n Software version
8 nnn Network element address
9 nnn Network bus number
Key:
* : This item is displayed in certain unit configurations only.
b : 1=Yes; 0=No
n : numerical display
: characters
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