Carrier Aquasnap 30RQ Troubleshooting guide


Pro-Dialog Control
Operation and maintenance instructions
R
AABBCC
AA
BB
CC

2

Each of the following drawings is replaced in the whole document by the corresponding explanation:
Start/stop button
Return key
Down arrow
Up arrow
DELTA T. Example: temperature difference between entering and leaving heat exchanger temperatures
Means character is flashing
The cover graphics are solely for illustration and forms no part of any offer for sale or any sale contract. The manufacturer
reserves the right to change the design at any time without notice.
CONTENTS
1 - SAFETY CONSIDERATIONS ............................................................................................................................................... 3
1.1 - General ...................................................................................................................................................................................... 3
1.2 - Avoid electrocution ..................................................................................................................................................................3
2 - GENERAL DESCRIPTION .................................................................................................................................................... 3
2.1 - General ...................................................................................................................................................................................... 3
2.2 - Abbreviations used...................................................................................................................................................................3
3 - HARDWARE DESCRIPTION ...............................................................................................................................................4
3.1 - General ...................................................................................................................................................................................... 4
3.2 - Electrical supply to boards ...................................................................................................................................................... 4
3.3 - Light emitting diodes on boards .............................................................................................................................................4
3.4 - The sensors ................................................................................................................................................................................ 4
3.5 - The controls ............................................................................................................................................................................... 5
3.6 - Connections at the user’s terminal block ..............................................................................................................................5
4 - SETTING UP PRO-DIALOG PLUS CONTROL ...............................................................................................................7
4.1 - User interface general features ............................................................................................................................................... 7
4.2 - Unit start/stop control.............................................................................................................................................................. 8
4.3 - Menus ........................................................................................................................................................................................ 9
5 - PRO-DIALOG PLUS CONTROL OPERATION............................................................................................................. 28
5.1 - Start/stop control .................................................................................................................................................................... 28
5.2 - Heating/cooling/standby operation ......................................................................................................................................28
5.3 - Evaporator water pump control ...........................................................................................................................................29
5.4 - Control interlock contact ...................................................................................................................................................... 29
5.5 - Evaporator antifreeze protection ......................................................................................................................................... 29
5.6 - Control point...........................................................................................................................................................................29
5.7 - Demand limit ..........................................................................................................................................................................31
5.8 - Night mode .............................................................................................................................................................................. 31
5.9 - Capacity control ..................................................................................................................................................................... 31
5.10 - Head pressure control..........................................................................................................................................................31
5.11 - Defrost function ................................................................................................................................................................... 31
5.12 - Additional electric heater stage control ............................................................................................................................31
5.13 - Control of a boiler ................................................................................................................................................................ 31
5.14 - Master/slave assembly ......................................................................................................................................................... 31
5.15 - Optional heat reclaim module ............................................................................................................................................ 32
5.16 - Free-cooling option .............................................................................................................................................................. 32
6 - DIAGNOSTICS - TROUBLESHOOTING ......................................................................................................................... 33
6.1 - General .................................................................................................................................................................................... 33
6.2 - Displaying alarms ................................................................................................................................................................... 33
6.3 - Resetting alarms ..................................................................................................................................................................... 33
6.4 - Alarm codes ............................................................................................................................................................................ 34

3


Installation, start-up and servicing of equipment can be
hazardous if certain factors particular to the installation are
not considered: operating pressures, presence of electrical
components and voltages and the installation site (elevated
plinths and built-up up structures). Only properly qualified
installation engineers and highly qualified installers and
technicians, fully trained for the product, are authorised to
install and start-up the equipment safely. During all servicing
operations all instructions and recommendations which
appear in the installation and service instructions for the
product, as well as on tags and labels fixed to the equipment
and components and accompanying parts supplied sepa-
rately, must be read, understood and followed.
• Apply all standard safety codes and practices.
• Wear safety glasses and gloves.
• Use the proper tools to move heavy objects. Move
units carefully and set them down gently.

Only personnel qualified in accordance with IEC (Inter-
national Electrotechnical Commission) recommendations
may be permitted access to electrical components. It is
particularly recommended that all sources of electricity to
the unit be shut off before any work is begun. Shut off the
main power supply at the main circuit breaker or isolator.
IMPORTANT: This equipment uses and emits electro-
magnetic signals. Tests have shown that the equipment
conforms to all applicable codes with respect to electro-
magnetic compatibility.
RISK OF ELECTROCUTION: Even when the main
circuit breaker or isolator is switched off, certain circuits
may still be energised, since they may be connected to a
separate power source.
RISK OF BURNS: Electrical currents cause components
to get hot either temporarily or permanently. Handle
power cable, electrical cables and conduits, terminal box
covers and motor frames with great care.
Fan start-up:
ATTENTION: In accordance with the operating
conditions the fans can be cleaned periodically. A fan can
start at any time, even if the unit has been shut down.


Pro-Dialog is a system for controlling single-, dual- or triple-
circuit 30RB air-cooled liquid chillers or 30RQ air-to-water
heat pumps. Pro-Dialog controls compressor start-up needed
to maintain the desired heat exchanger entering or leaving
water temperature. In cooling mode it controls the operation
of the fans to maintain the correct condensing pressure in
each circuit. For heat pump units it controls and optimises
the defrost cycles of each circuit in order to minimize the
heating capacity reduction. Safety devices are constantly
monitored by Pro-Dialog to ensure their safe operation.
Pro-Dialog also gives access to a Quick Test program
covering all inputs and outputs.
All Pro-Dialog Plus controls can work in accordance with
three independent modes:
• Local mode: the machine is controlled by commands
from the user interface.
• Remote mode: the machine is controlled by remote
contacts (volt-free contacts).
• CCN mode: the machine is controlled by commands
from the Carrier Comfort Network (CCN). In this
case, a data communication cable is used to connect
the unit to the CCN communication bus.
The operating mode must be chosen with the Start/Stop
button described in section 4.2.1. When the Pro-Dialog
Plus system operates autonomously (Local or Remote
mode) it retains all of its own control capabilities but does
not offer any of the features of the CCN network.

In this manual, the refrigeration circuits are called circuit
A, circuit B and circuit C. The compressors in circuit A are
labelled A1, A2, A3 and A4. Those in circuit B are B1, B2,
B3 and B4 and those in circuit C are C1, C2, C3 and C4.
The following abbreviations are used frequently:
CCN : Carrier Comfort Network
CCn : Operating type: CCN
LED : Light Emitting Diode
LEN : Sensor Bus (internal communication bus linking
the basic board to the slave boards)
LOFF : Operating type: Local Off
L-On : Operating type: Local On mode
L-Sc : Operating type: Local On following a time schedule
MASt : Operating type: master unit (master/slave assembly)
rEM : Operating type: by remote contacts
SCT : Saturated Condensing Temperature
SST : Saturated Suction Temperature
EXV : Electronic Expansion Valve

4
32
14
67
5
1




All boards are supplied from a common 24 V a.c. supply
referred to earth.
CAUTION: Maintain the correct polarity when connecting
the power supply to the boards, otherwise the boards may
be damaged.
In the event of a power supply interrupt, the unit restarts
automatically without the need for an external command.
However, any faults active when the supply is interrupted
are saved and may in certain cases prevent a circuit or unit
from restarting.

All boards continuously check and indicate the proper
operation of their electronic circuits. A light emitting diode
(LED) lights on each board when it is operating properly.
• The red LED flashing for a 2 second period on the
NRCP-BASE board indicates correct operation. A
different rate indicates a board or a software failure.
• The green LED flashes continuously on all boards to
show that the board is communicating correctly over its
internal bus. If the LED is not flashing, this indicates a
LEN bus wiring problem.
• The orange LED of the master board flashes during
any communication via the CCN bus.

Pressure sensors
Two types of electronic sensors are used to measure the
suction and discharge pressure in each circuit.
Thermistors
The evaporator water sensors are installed in the entering
and leaving side. The outdoor temperature sensor is mounted
below the control box. An optional water system tempera-
ture sensor can be used for master/slave assembly control
(in the case of leaving water control).
In heat pump units a sensor placed on an air heat exchanger
pipe ensures defrost operation.

1 CCN connector
2 Red LED, status of the board
3 Green LED, communication bus LEN
4 Orange LED, communication bus CCN
5 PD5 basic board
6 Remote customer control connection contacts
7 Master board customer connection relay outputs
The control system consists of a PD5-BASE board, SPM
boards for compressor control, PD-AUX boards for fan
control, and an NRCP2-BASE board for units equipped with
energy management option or heat reclaim option. All
boards communicate via an internal LEN bus. The PD5-
BASE boards continuously manage the information
received from the various pressure and temperature probes,
and incorporates the program that controls the unit.
The user interface consists of two display blocks with up to
26 LEDs and 16 buttons (according to unit type). It is
connected to the main basic board and gives access to a
full array of control parameters.

5

3.6.1 - General description
The contacts below are available at the user’s terminal block
on the PD5-BASE board (see figure 1). Some of them can
only be used if the unit operates in remote operating type
(rEM). The following table summarises the connections at
the user’s terminal block.

Evaporator pumps
The controller can regulate one or two evaporator pumps
and takes care of automatic change-over between pumps.
Evaporator heater
It protects the evaporator (and the pipe heater for units
without pump) against freezing if the unit is off.
Boiler
This relay output authorises start/stop of a boiler.

 

  
Evaporator pump 1 control J2A / CH19 PD5-BASE The control can regulate one or two evaporator pumps, and automatically change over
between the two pumps.
Evaporator pump 2 control J2A / CH20 PD5-BASE The control can regulate one or two evaporator pumps, and automatically change over
between the two pumps.
Evaporator heater control J2B / CH21 PD5-BASE This (and the pipe heater for units without pumps) protects the evaporator against frost.
Alarm relay output J3 / CH24 PD5-BASE Indicates alarms.
Alert relay output J3 / CH25 PD5-BASE Indicates alerts.
Operation or ready-to-start relay
output
J3 / CH26 PD5-BASE Indicates if the unit is ready to start or operates.
Contact 1:
Start/stop
J4 / CH11 32-33 PD5-BASE This contact is used for unit start/stop. It is only taken into account if the unit is under
remote operation control (rEM).
Contact 2:
Setpoint selection
J4 / CH12 65-66 PD5-BASE This contact is only taken into account if the unit is under remote operation control (rEM).
Contact 3:
Demand limit selection 1
J4 / CH13 63-64 PD5-BASE See the description of these contacts in sections 3.6.5 and 3.6.6.
Contact 3 bis:
Demand limit selection 2
CH9 NRCP2-BASE This contact is only present if the energy management option is used.
User safety loop input J4 / CH15a 34-35 PD5-BASE This contact is mounted in series with the water ow control contact. It can be used for
any customer safety loop that requires that the unit is stopped, if it is open. If it is unused
this contact must be bridged.
Contact 4:
Heat reclaim selection
J4 / CH14 PD5-BASE This contact is used to select the heat reclaim mode.This contact is only used, if the heat
reclaim option is used (not compatible with the free cooling option).
Contact 4:
Free cooling prevention
J4 / CH14 PD5-BASE If this contact is closed, it is used to prevent operation of the free cooling mode. It is only
taken into account, if the unit is under remote operation control (rEM). This contact is only
used if the free cooling option is used (incompatible with the heat reclaim option).
Contact 5:
Pump operation status
J5C / CH18 PD5-BASE If this contact is open, the pump is controlled and an alarm has tripped.
Connection to CCN J12 PD5-BASE An RS-485 bus is used for connection to the CCN.
- Pin 1: signal +
- Pin 2: ground
- Pin 3: signal -
Critical alarm relay output J2C / CH23 PD5-BASE Output allows disconnecting the general unit power supply, if a contactor is stuck and
there is an increased risk of the unit being damaged.

6

 

  
Evaporator pump 1 control J2A / CH19 PD5-BASE The control can regulate one or two evaporator pumps, and automatically change over
between the two pumps.
Evaporator pump 2 control J2A / CH20 PD5-BASE The control can regulate one or two evaporator pumps, and automatically change over
between the two pumps.
Evaporator heater control J2B / CH21 PD5-BASE This (and the pipe heater for units without pumps) protects the evaporator against frost.
4-way valve A control J2C/ CH22 PD5-BASE The control regulates the 4-way valve during heat/cool changeover or during defrost
cycles.
4-way valve B control J2C/ CH23 PD5-BASE The control regulates the 4-way valve during heat/cool changeover or during defrost
cycles.
Alarm relay output J3 / CH24 PD5-BASE Indicates alarms.
Alert relay output J3 / CH25 PD5-BASE Indicates alerts.
Operation or ready-to-start relay
output
J3 / CH26 PD5-BASE Indicates if the unit is ready to start or operates.
Contact 1:
Start/stop
J4 / CH11 32-33 PD5-BASE This contact is used for unit start/stop. It is only taken into account if the unit is under
remote operation control (rEM).
Contact 2:
Setpoint selection
J4 / CH12 65-66 PD5-BASE This contact is only taken into account if the unit is under remote operation control (rEM).
Contact 3:
Demand limit selection 1
J4 / CH13 63-64 PD5-BASE See the description of these contacts in sections 3.6.5 and 3.6.6.
Contact 3 bis:
Demand limit selection 2
CH9 NRCP2-BASE This contact is only present if the energy management option is used.
User safety loop input J4 / CH15a 34-35 PD5-BASE This contact is mounted in series with the water ow control contact. It can be used for
any customer safety loop that requires that the unit is stopped, if it is open. If it is unused
this contact must be bridged.
Contact 4:
Heating/cooling selection
J5B / CH17 PD5-BASE This contact is used for heating/cooling mode selection. It is only taken into account if the
unit is under remote operation control (rEM).
Contact 5:
Pump operation status
J5C / CH18 PD5-BASE If this contact is open, the pump is controlled and an alarm has tripped.
Connection to CCN J12 PD5-BASE An RS-485 bus is used for connection to the CCN.
- Pin 1: signal +
- Pin 2: ground
- Pin 3: signal -
Critical alarm relay output J2C / CH22 NRCP2-BASE Output allows disconnecting the general unit power supply, if a contactor is stuck and
there is an increased risk of the unit being damaged (available if the energy management
option is used).
3.6.2 - Volt-free contact on/off/cooling/heating without
multiplexing
If the automatic heating/cooling changeover function is
not selected (see section 5.2) and if the user configuration
allows this (heat pump and Pro-Dialog interface selection)
the operation of contacts 1 and 4 is as follows:
  
 Open Closed Closed
 - Open Closed
Contact status not signicant
3.6.3 - Volt-free contact on/off/cooling/heating with
multiplexing
If the automatic heating/cooling changeover function is
selected (see section 5.2) and if the user configuration
allows this (heat pump and Pro-Dialog interface selection)
the operation of contacts 1 and 4 is multiplexed:
   
 Open Closed Closed Open
 Open Open Closed Closed
NOTE: The automatic changeover function (ON auto)
selects the cooling or heating mode based on the outdoor
temperature (see section 5.2).
3.6.4 - Volt-free setpoint selection
This volt-free contact permits changing the setpoint. The
setpoints can be modified in the setpoint menu.
 
     
 Open Closed - Open Closed -
3.6.5 - Volt-free demand limit contact with energy
management option
For units with the energy management option the demand
limit contact 3 is located on the PD5-BASE board and
contact 3 bis is on the NRP2-BASE board. Demand limit is
now multiplexed.

   
 Open Closed Open Closed
 Open Open Closed Closed
3.6.6 - Volt-free demand limit contact without energy
management option
For units without energy management option, contact 3 is
located on the PD5-BASE board.

 
 Open Closed

7

  
Menu Permits the selection of a main menu. Each main menu is represented by an icon. The icon is lit if active.
Up arrow Permits scrolling through the menu items (in the two-digit display). If the modication mode is active this button authorises increase of the
value of any parameter.
Down arrow Permits scrolling through the menu items (in the two-digit display). If the modication mode is active this button authorises decrease of the
value of any parameter.
Enter Gives access to the modication mode, validates a modication or displays expanded item description.
Start/stop Authorises start or stop of the chiller in local mode or modication of its operating type.

  
INFORMATION menu Displays the general operating parameters for the unit.
TEMPERATURES menu Displays the unit operating temperatures.
PRESSURES menu Displays the unit operating pressures.
SETPOINTS menu Displays the unit setpoints and enables them to be modied.
INPUTS menu Displays the status of the unit digital and analogue inputs.
OUTPUTS/TESTS menu Displays the status of the unit outputs and enables them to be tested.
CONFIGURATIONS menu Displays the unit conguration and enables it to be modied.
ALARMS menu Displays active alarms.
ALARMS HISTORY menu Displays the history of the alarms.
OPERATING LOG menu Displays the operating times and number of starts for the unit and the compressors.
The local interface enables a number of operating para-
meters to be displayed and modified. The interface consists
of two distinct parts: the main interface (left hand section)
and the summary interface (right hand section).
Main interface
It gives access to all Pro-Dialog Plus data and operating
functions. It consists of:
• A two-digit display showing the number of the item
selected.
• A four-digit display showing the contents of the item
selected.
• LEDs and buttons for unit start/stop, menu selection,
menu item selection and value adjustment.
 




 

 


R
AA BB
AABBAA
AA
BB
BB
R
AABBCC
AA
BB
CC

8

4.2.1 - Description
The unit start/stop can be controlled by one of the following
methods:
• Locally on the actual unit (Local control type)
• By remote control with the aid of user contacts (remote
control type)
• By CCN control with the aid of the CCN (CCN control
type)
The main interface includes a Start/Stop button which can
be used to stop or start the unit in the local operating type
or to select the remote or CCN operating type.
The available operating types are described in the following
table.
The following operating types can be selected using the
Start/Stop button:




LOFF  The unit is halted in local mode.
L-On  The unit is in local control mode and is authorised to start.
L-Sc*  The unit is in local control mode. It is
authorised to start if the period is occupied. If the timer program for
unit operation is unoccupied, the unit remains shut down until the
period becomes occupied.
CCN The unit is controlled by CCN commands.
rEM The unit is controlled by remote control contacts.
MAST*  The unit runs as a master in a two unit lead/lag
arrange-ment. This is displayed if the unit is congured for master/
slave control.
* Displayed if the conguration requires it.
Section 5.1 gives a more detailed description of the commands to start/stop
the unit, analysed by operating type.
4.2.2 - Stopping the unit in local mode
The unit can be stopped in local mode at any time by
pressing the Start/Stop button.

   
Press the Start/Stop button for
less than 4 seconds (one short
press is enough).
C LOFF
If the button is released, the unit
stops without the need for further
action.
t LOFF
4.2.3 - Starting unit and selecting an operating type
The unit can be started in local mode, or unit operating
type can be changed at any time using the Start/Stop
button. In the example that follows, the unit is stopped
(LOFF) and the user wants to start the unit in local mode.
The summary interface (right hand section) includes a mimic
diagram of the unit, together with push-buttons and LEDs.
It gives quick access to the main operating parameters of
the unit.

 
:
The unit is authorised to start or is already running

- Lit: circuit A or unit shut down by alarm
- Flashing: circuit A or unit running with alarm present

- Lit: circuit B or unit shut down by alarm
- Flashing: circuit B or unit running with alarm present

- Lit: circuit C or unit shut down by alarm
- Flashing: circuit C or unit running with alarm present

The evaporator pump is running.

From top to bottom - start/stop status of compressor A1, A2, A3 and A4
or B1, B2, B3 and B4 or C1, C2, C3 and C4. Flashing LED indicates that
the circuit is in the protection or defrost mode (A, B or C).

The unit operates in heating mode.

The unit operates in cooling mode.

 
Blue button: evaporator leaving or entering water temperature in °C
Gray button: outdoor air temperature in °C
Control point (setpoint + reset) in °C
Press 1: circuit A/B discharge pressure in kPa
Press 2: circuit A/B saturated condensing temperature in °C
Press 1: circuit A/B suction pressure in kPa
Press 2: circuit A/B saturated suction temperature in °C
Press 1: compressor A1/B1 operating hours in h/10 or h/100
Press 2: compressor A2/B2 operating hours in h/10 or h/100
Press 3: compressor A3/B3 operating hours in h/10 or h/100
Press 4: compressor A4/B4 operating hours in h/10 or h/100
(1) There is a separate button for each of the two circuits.

 
Blue button: evaporator leaving or entering water temperature in °C
Gray button: outdoor air temperature in °C
Control point (setpoint + reset) in °C
Press 1: circuit A/B/C discharge pressure in kPa
Press 2: circuit A/B/C saturated condensing temperature in °C
Press 1: circuit A/B/C suction pressure in kPa
Press 2: circuit A/B/C saturated suction temperature in °C
Press 1: compressor A1/B1/C1 operating hours in h/10 or h/100
Press 2: compressor A2/B2/C2 operating hours in h/10 or h/100
Press 3: compressor A3/B3/C3 operating hours in h/10 or h/100
Press 4: compressor A4/B4/C4 operating hours in h/10 or h/100
Press 1: Selects circuit A to display information
(only on triple-circuit units)
Press 1: Selects circuit B to display information
(only on triple-circuit units)
Press 1: Selects circuit C to display information
(only on triple-circuit units)
(1) There is a common button for the three circuits; for circuit selection press one
of the three last buttons described above.
(1)
(1)
(1)
AA
AA
AA
B
AA
C
(1)
(1)
(1)
A
B
C

9


  



The unit is in local stop mode. The previously
used operating type is local on (L-ON)
LOFF
Press the Start/Stop button for 4 seconds (one
short press-down is sucient). L-ON
illuminates immediately. “C” ashes in the
2-digit display to show that the controller is
awaiting conrmation.
L-On
Press the Enter button to conrm the operating
type. “t” is displayed in the 2-digit display to
indicate the operating type selected. If the
Enter button is not pressed soon enough, the
controller will cancel the change and remain in
the stop mode.
L-On

  



Continually press the operating type selection
button for more than 4 seconds.
C LOFF
Hold down the Start/Stop button.
The available operating types are displayed
one by one until the button is released.
L-On
L-Sc
rEM
Release the Start/Stop button if the operating
type you want is displayed (in this example
L-On). “C” ashes in the 2-digit display to show
that the controller is awaiting conrmation.
Press the Enter button to conrm the operating
type selected (in this example: L-On). “t” is
displayed in the 2-digit display to indicate the
operating type selected. If the Enter button is
not pressed soon enough, the controller will
cancel the change and continue to use the
previous operating type.
t L-On

4.3.1 - Selecting a menu
The MENU button authorises you to select a menu from
the 10 main menus that are available. Each time you press
this button one of the 10 LEDs lights up in turn alongside
each of the icons representing a main menu. The active
menu is the one against which the LED is lit. If a menu is
empty then its LED is not lit. To scroll quickly through the
menus, hold the MENU button down.
4.3.2 - Selecting a menu item
The up and down Arrow buttons let you scroll through the
menu items. Menu item numbers are displayed in the two-
digit display. The item number increases or decreases every
time you press the up or down Arrow button. The menu
items that are not in use or incompatible with the configu-
ration are not displayed. The value or status associated
with the active item is displayed in the four-digit display.
To scroll quickly through the items, hold the up or down
Arrow button down.
The following example shows how to access item 3 in the
Pressures menu.

 

 

Press the MENU button until
the LED marked PRESSURE
lights.
0
0
Press one of the Arrow buttons
until the two-digit display shows
3 (item number 3).
1
2
3
4.3.3 - Modifying the value of a parameter/access to a sub-
menu
Press the Enter button for more than 2 seconds to enter the
modification mode or to select a sub-menu. This lets you
correct the value of an item or select a sub-menu with the
aid of the up and down Arrow buttons (if you are authorised
to overwrite the item concerned). When modification mode
is activated, the LED for the main menu to which the item
belongs as well as the 2-digit display flash in the menu block.
Once the required value is obtained, press the Enter button
again to validate the change or to access the sub-menu. The
LED for the menu to which the item and the 2-digit display
belong then stops flashing, indicating that modification
mode no longer applies.
In modification mode, the value to be modified increases
or decreases in steps of 0.1 every time you press the Arrow
buttons. Holding one of these buttons down increases the
rate of increase or decrease.
NOTE: The access to a sub-menu may require entering a
password. This is automatically requested. See section
4.3.11.2.
The following example shows how to modify the value of
item 1 in the Setpoint menu.

10

   



Hold on the MENU button until the LED for SETPOINT lights. 0
0
Press one of the Arrow buttons until the two-digit display shows 1 (item number 1- cooling setpoint 2).
The value for setpoint 2 is displayed in the four-digit display (6.0°C in this example).
1
1
6.0
Press the Enter button for more than 2 seconds to enable the value associated with item 1 to be
modied. The Setpoint menu LED and the two-digit display ash indicating that modication mode is
active.
6.0
Keep pressing the Down Arrow button until the value 5.7 is displayed in the four-digit display. The
Setpoint menu LED and the two-digit display keep ashing.
5.9
5.8
5.7
Press the Enter button again to validate the change. The new setpoint is 5.7°C.The Setpoint menu
LED and the two-digit display stop ashing, indicating that modication mode no longer applies.
1 5.7
4.3.4 - Expand display
Pressing the Enter button causes a 23 character text expan-
sion to be scrolled across the four-digit display. All user
menus provide an expansion of the current displayed
parameters. If the expansion is complete the four-digit
display reverts to item value. This function can be inhibited
through the User Configuration menu.
1
1
1
1

11
ALARMES INFORMATIONS PRESSION S TEMPERATURES CONSIGNES ENTREES SORTIES ALARMES HISTORIQUE ALARMES CONFIGURATION
HOLIDAY
… … … …
SCHEDULE 2 USER 2 SCHEDULE 1 USER 1 SERVICE 1 SERVICE 2 MASTER/SLAVE
TIME & DATE HSM
RUNTIME
USER
PERIOD 1
SUB-MENUS
SUB-SUB-MENUS
SUB-SUB-SUB-MENUS

OUTPUT 1
INFORMATION PRESSURES SETPOINTS INPUTS OUTPUTS ALARMS ALARM HISTORYCONFIGURATIONTEMPERATURES
OUTPUT 2 SERVICE FACTORY RUNTIME 1 RUNTIME 2 RUNTIME 3 MAINTENANCE
USER 1 USER 2 TIME & DATE SCHEDULE 1 SCHEDULE 2 BROADCASTHOLIDAYS SERVICE 1 SERVICE 2 MASTER/SLAVE HSM
PERIOD 2
PERIOD 3
PERIOD 4
PERIOD 5
PERIOD 6
PERIOD 7
PERIOD 8
PERIOD 1 PERIOD 2
PERIOD 3
PERIOD 4
PERIOD 5
PERIOD 6
PERIOD 7
PERIOD 8
HOLIDAY 1
HOLIDAY 2
HOLIDAY 3 HOLIDAY 4 HOLIDAY 5
HOLIDAY 6
HOLIDAY 7
HOLIDAY 8
HOLIDAY 16
MAIN MENUS

12

           Default display Evaporator water
entering temp.
Discharge pressure circuit A
Cooling setpoint 1 Contact 1: on/o/heating/
cooling
Output 1 SUB-MENU: User
Conguration (USEr)
Number of active alarms/resets**
Historic alarm code 1** SUB-MENU:
Runtimes 1
Mode Evaporator water
leaving temp.
Suction pressure circuit A
Cooling setpoint 2 Contact 2: setpoint selection Output 2 SUB-MENU: Service
Conguration (SErviCE)
Active alarm code 1** Historic alarm code 2** SUB-MENU:
Runtimes 2
Chiller occupied mode* Outdoor temperature Discharge
pressure circuit B*
Ice storage setpoint* Contact 4: heating/cooling [1]* - SUB-MENU: Factory
Conguration (FACtorY)
Active alarm code 2** Historic alarm code 3** SUB-MENU:
Runtimes 3
Minutes left Heat reclaim entering
water temp.*
Suction pressure circuit B*
Heating setpoint 1* Contact 4: heat reclaim [2]*
OR free cooling prevention [2]
- - Active alarm code 3** Historic alarm code 4** SUB-MENU:
Maintenance
Cooling/heating
selection*
Heat reclaim leaving water temp.*
Discharge pressure circuit C*
Heating setpoint 2* User safety loop input status - - Active alarm code 4** Historic alarm code 5** -
Cooling/heating status* Saturated discharge
temperature circuit A
Suction pressure circuit C*
Auto changeover threshold (cooling mode)*
Water pump operation contact status*
- - Active alarm code 5** Historic alarm code 6** -
Heat reclaim selection* Saturated suction
temp. circuit A
Vacuum pressure, circuit A*
Auto changeover threshold (heating mode)*
Control box thermostat - - - Historic alarm code 7** -
Total capacity in % Suction temperature,
circuit A
Vacuum pressure, circuit B*
Heat reclaim mode input setpoint*
Contact 3: demand limit selection 1*
- - - Historic alarm code 8** -
Capacity circuit A in % Superheat, circuit A - Heat reclaim mode input
dead band*
Contact 3 bis: demand limit selection 2*
- - - Historic alarm code 9** -
Capacity circuit B in % Saturated discharge
temp. circuit B
- Setpoint demand
limitation 1*
Ice storage remote contact* - - - Historic alarm code 10** -
 Capacity circuit C in
%*
Saturated discharge temp. circuit B
- Setpoint demand
limitation 2*
Remote unit contact, continued occupied mode*
- - - Historic alarm code 11** -
 Present demand limit
in %
Suction temperature, circuit B
- Setpoint demand
limitation 3*
User safety loop input* - - - Historic alarm code 12** -
 Present lag limit in %* Superheat, circuit B - Ramp loading* Demand limit control
limitation value*
- - - Historic alarm code 13** -
 Setpoint in local
control
Saturated discharge temp. circuit C*
- Cooling - zero reset
threshold*
Setpoint reset value* - - - Historic alarm code 14** -
 Setpoint occupied
mode
Saturated discharge temp. circuit C*
- Cooling - full reset
threshold*
Ambient temperature value* - - - Historic alarm code 15** -
 Active setpoint Suction temperature,
circuit C*
- Cooling - full reset value* Subcooling liquid
temperature, circuit A*
- - - Historic alarm code 16** -
 Control point Superheat, circuit C* - Heating - zero reset
threshold*
Subcooling liquid temperature, circuit B*
- - - Historic alarm code 17** -
 Controlled water
temperature
Defrost temperature, circuit A*
- Heating - full reset
threshold*
Subcooling temperature, circuit A*
- - - Historic alarm code 18** -
 Indicator, heat recovery
in progress, circuit A*
Defrost temperature, circuit B*
- Heating - full reset value* Subcooling temperature,
circuit B*
- - - Historic alarm code 19** -
 Indicator, heat recovery
in progress, circuit B*
System water temperature*
- - - - - - Historic alarm code 20** -

* Displayed if the conguration requires it 1 For heat pump units
** Displayed if the alarm exists 2 For cooling only units
- Not in use

13
4.3.5 - Description of the Information menu

   
0. It cycles through the following displays:
±nn.n °C   temperature of the water that the unit tries to maintain at the control point.
LOFF
L-On
L-Sc
CCn
rEM
MASt
-
-
-
-
-
-
 
Local O
Local On
Local On - based on unit clock. Displayed if the CCN/clock board is installed
CCN Control. Displayed if the CCN/clock board is installed
Remote Control
Master unit
OFF
rEADY
dELAY
StOPPing
running
triPout
OvErridE
dEFrOSt
FrEEcOOl
-
-
-
-
-
-
-
-
-
 
O: Unit is stopped and not authorised to start.
Ready: Unit is authorised to start
Delay: Unit is in delay at start-up. This delay is active after the unit has been switched on. The delay can be congured in the
User Conguration menu
Stopping: Unit is currently stopping
On: Unit is running or authorised to start
Fault shutdown
Limit: The operating conditions do not allow total unit operation
Defrost: One circuit is in defrost mode
Free cooling: The unit operates in free cooling mode
OCCUPIEd
UNOCCUPIEd
-
-
 
Occupied: Unit in occupied mode
Unoccupied: Unit in unoccupied mode
COOL
HEAT
StAndbY
BotH
-
-
-
-
 
Cooling: Unit operates in cooling mode
Heating: Unit operates in heating mode
Standby: Unit is in auto cooling/heating changeover mode, and is in standby
Both: The unit operates in cooling (compressors) and heating (boiler). Only with HSM operation
ALArM
ALErt
-
-
 
Alarm: Unit is totally stopped because of failure
Alert: Unit is in failure but not completely stopped
MAStEr
SLAvE
-
-
 
Master: The master/slave control is active and the unit is the master
Slave: The master/slave control is active and the unit is the slave
Texts 4 and 5 are not displayed if the unit is in Local o mode or if the unit is in remote control mode and contact 1 is open
1 [1] nn
-
Active mode codes. Each active mode is displayed in turn. This Item is masked when nil. Pressing the enter button when a mode
code is displayed causes a character text expansion to be scrolled accross the four-digit display. See the description in the
following table
2 [2]
occu
unoc
Forc
-
This item indicates the current  mode.
Occupied
Unoccupied
The value is displayed in turn with ‘Forc’ when the unit is in CCN control and if this variable if forced through CCN.
3 nn.n minutes  This item indicates the minutes left before the unit can be started. This delay at start-up is always active after the
unit has been switched on. The delay can be congured in the User Conguration 1 menu.
4 [2]
HEAt
COOL
Auto
-
-
-
-
This item is accessible in read/write, if the unit is in local control mode.
Heating mode selection
Cooling mode selection
Automatic heating/cooling mode changeover selection. Only displayed if the auto changeover function is selected (User
Conguration 1 menu).
5 [2]
HEAt
COOL
StbY
both
Forc
-
-
-
-
-
 This item indicates whether the unit is in cooling or heating. Displayed if the unit controls a boiler.
Heating
Cooling
Standby: Unit is in auto cooling/heating changeover mode, and is in standby.
Both: The unit operates in cooling (compressors) and heating (boiler). Only with HSM operation.
The value is displayed in turn with ‘Forc’ when the unit is in CCN control and if this variable if forced through CCN.
6 [2] Yes
No
Forc
- Only displayed if the unit is a chiller and the heat reclaim option is used. The value is displayed in
turn with ‘Forc’ when the unit is in CCN control and if this variable if forced through CCN.
6 [2] Yes
No
Forc
- Only shown if the unit is a chiller and if the free cooling option is available. The value is displayed
in turn with “Forc”, when the unit is in CCN control and if this variable is forced through CCN.
7 nnn % . It is the percentage of compressor capacity used by the unit.
8 nnn %  It is the percentage of compressor capacity used by on circuit A.
9 [2] nnn % . It is the percentage of compressor capacity used by on circuit B. Dual-circuit units only.
10 [2] nnn % . It is the percentage of compressor capacity used by on circuit C. Triple-circuit units only.
11 nnn
Forc
% This is the authorised operating capacity of the unit. See section 5.7.
The value is displayed in turn with ‘Forc’ when the unit is in CCN control and if this variable if forced through CCN.
12 [2] nnn %  Displayed when the master/slave control is selected.
13 [2]
SP-1
SP-2
AUtO
-
Setpoint select in local mode. This point is read/write accessible. Displayed only when the unit is LOFF, L-On or L-Sc operating type.
SP-1 = cooling/heating setpoint 1
SP-2 = cooling/heating setpoint 2
AUtO = active setpoint depends on schedule 2 (setpoint selection schedule). See section 5.6.1 & 4.3.11.6.

14

   
14 [2]
occu
unoc
Forc
-

Occupied: cooling setpoint 1 is active
Unoccupied: cooling setpoint 2 is active
The value shall be displayed in turn with ‘Forc’ when the unit is in CCN control and if this variable if forced through CCN.
15 ±nn.n °C  This is the current cooling/heating setpoint: cooling/heating setpoints 1, 2 or ice storage setpoint.
16
±nn.n
Forc
°C
 This is the setpoint used by the controller to adjust the temperature of the leaving or entering water (according to
conguration).
Control point = active setpoint + reset. See section 5.6
The value is displayed in turn with ‘Forc’ when the unit is in CCN control and if this variable if forced through CCN.
17 ±nn.n °C  Water temperature that the unit tries to maintain at the control point.
18 n Heat reclaim sequence indicator, circuit A (option).
19 n Heat reclaim sequence indicator, circuit B (option).
[1] This item is masked when nil.
[2] This item is displayed in certain unit congurations only.

  
1 Delay at start-up active The delay at start-up operates after the unit has been switched on. If the delay has not expired, the mode is
active. The delay is congured in the User Conguration 1 menu.
2 2nd cooling/heating setpoint active The second cooling/heating setpoint is active. See section 5.6.1
3 Setpoint reset active In this mode, the unit uses the reset function to adjust the leaving water temperature setpoint.
4 Demand limit active In this mode, the demand at which the unit is authorised to operate is limited.
5 Ramp loading active Ramp loading is active. This item is referenced to the allowed low and high temperature limits, controlled at the
water heat exchanger in order to prevent compressor overloading. Ramp function must be congured (see
User Conguration 1 menu). Ramp values can be modied (see Setpoint menu).
6 Water heat exchanger heater active The water heat exchanger heater is active.
7 Evaporator pump reversal in eect The unit is tted with two evaporator water pumps and reversal between pumps is in eect.
8 Evaporator pump periodic start The unit is stopped and the pump is started each day at 14.00 p.m. for two seconds. This function needs to be
congured in the User Conguration 2 menu.
9 Night mode (low noise level) The night mode (low noise level) is active. The number of fans is reduced (if operating conditions allow) and
unit capacity can be limited.
10 Unit in SM control Unit is in control of a System Manager (FSM, CSM III or HSM).
11 Master/slave link active Unit is connected to a secondary unit by a master slave link and the master/slave modes are active.
12 Auto heating/cooling changeover active If the unit is in auto mode, the heating/cooling changeover is automatic, based on the outdoor temperature.
13 Free cooling mode active The free cooling mode is active.
14 Heat reclaim mode active The heat reclaim mode is active.
15 Electric heating stages active The electric heating stages are active.
16 Low water entering temperature protection
in heating mode
The unit is in heating mode and compressor start is not authorised, as the entering water temperature is below 10°C.
17 Boiler active The unit controls a boiler and this is operating.
18 Ice storage mode active The unit operates in cooling mode and the ice storage mode is active.
19, 20 Defrost 19 = circuit A, 20 = circuit B. The unit is in heating mode, and the defrost sequence is active on the relevant circuit.
21, 22, 23 Low suction temperature protection 21 = circuit A, 22 = circuit B, 23 = circuit C. Protection for evaporator low suction temperature circuit is active. In
this mode, circuit capacity is not authorised to rise and the circuit can be unloaded.
24, 25, 26 Hot gas protection 24 = circuit A, 25 = circuit B, 26 = circuit C. Hot gas discharge protection is active. In this mode, the circuit
capacity cannot increase, and the circuit may be unloaded.
27, 28, 29 High pressure protection 27 = circuit A, 28 = circuit B, 29 = circuit C. The circuit is in high pressure protection mode because the HP
protection threshold has been exceeded. Circuit has been unloaded and the circuit capacity is not authorised
to rise.
30, 31, 32 Low superheat protection 30 = circuit A, 31 = circuit B, 32 = circuit C. The circuit is in the low superheat protection mode to prevent the
compressors drawing in liquid refrigerant.

15
4.3.6 - Description of the Temperatures menu

   
0 ±nn.n °C 
1 ±nn.n °C 
2 ±nn.n °C 
3 [1] ±nn.n °C  (only if heat reclaim option is congured)
4 [1] ±nn.n °C  (only if heat reclaim option is congured)
5 ±nn.n °C 
6 ±nn.n °C 
7 ±nn.n °C 
8 ±nn.n °C 
9 ±nn.n °C 
10 ±nn.n °C 
11 ±nn.n °C 
12 ±nn.n °C 
13 [1] ±nn.n °C  (displayed if circuit C exists)
14 [1] ±nn.n °C  (displayed if circuit C exists)
15 [1] ±nn.n °C  (displayed if circuit C exists)
16 [1] ±nn.n °C  (displayed if circuit C exists)
17,18 ±nn.n °C  (displayed if unit is in heat pump mode)
17 = circuit A, 18 = circuit B
19 [1] ±nn.n °C  This item is only displayed when the master/slave option is congured.
[1] This item is displayed in certain unit congurations only
4.3.7 - Description of the Pressures menu

   
0 nnnn kPa  Relative pressure.
1 nnn kPa Relative pressure.
2 nnnn kPa Relative pressure.
3 nnn kPa  Relative pressure.
4 nnnn kPa  Relative pressure.
5 nnn kPa Relative pressure.
6 [1] ±nnn kPa Only displayed if heat reclaim option is used.
7 [1] ±nnn kPa Only displayed if heat reclaim option is used.
8 [1] nnn kPa  Only displayed if the free cooling option is available.
9 [1] nnn kPa Only displayed if the free cooling option is available.
10 [1] ±nnn kPa Only displayed if the free cooling option is available.
11 [1] nnn kPa  Only displayed if the free cooling option is available.
12 [1] nnn kPa  Only displayed if the free cooling option is available.
13 [1] ±nnn kPa Only displayed if the free cooling option is available.
14 [1] nnn kPa Only displayed if the free cooling option is available.
15 [1] nnn kPa  Only displayed if the free cooling option is available.
16 [1] ±nnn kPa Only displayed if the free cooling option is available
[1] This item is displayed in certain unit congurations only.

16

  
 -10 to 51.6°C -10 to 51.6°C
 0 to 13.6 0 to 13.6
 0 to 11.1 °C 0 to 11.1 °C
 -10 to 51.6°C -10 to 51.6°C

    
0 ±nn.n °C -28 to 26 This item lets you modify 
1 ±nn.n °C -28 to 26 This item lets you modify 
2 [1] ±nn.n °C -28 to 0 This item lets you modify the ice storage setpoint.
3 [1] nnn °C 20 to 50 This item lets you modify , only displayed for heat pumps.
4 nn.n °C 20 to 50 This item lets you modify , only displayed for heat pumps.
5 [2] ±nn.n °C 3.8 to 50 This item lets you display and modify the outdoor temperature
threshold at which the unit changes over in cooling mode. Displayed only if the auto cooling/heating changeover function is
selected.
6 [2] ±nn.n °C 0 to 46 This item lets you display and modify the outdoor temperature
threshold at which the unit changes over in heating mode. Displayed only if the auto cooling/heating changeover function is
selected and if the unit is a heat pump. The heating threshold must be 3.8°C below the cooling threshold, otherwise the new
setpoint will be rejected.
7 [2] nn.n °C 35 to 60 For the desuperheater option, this item permits control the minimum condensing temperature setpoint.
8 [2] nn.n °C 2.7 to 15 This item lets you display and modify the heat reclaim dead band.
9 nnn % 0 to 100  Limitation by volt-free contact. This item is used to dene the maximum capacity that the unit is
authorised to use, if the demand limit contact(s) activate limit 1. Contact control depends on the conguration.
10 [2] nnn % 0 to 100  Limitation by volt-free contact. This item is used to dene the maximum capacity that the unit is
authorised to use, if the demand limit contact(s) activate limit 2. Contact control depends on the conguration. Displayed
and used only for units with energy management option.
11 [2] nnn % 0 to 100  Limitation by volt-free contact. This item is used to dene the maximum capacity that the unit is
authorised to use, if the demand limit contact(s) activate limit 3. Contact control depends on the conguration. Displayed
and used only for units with energy management option.
12 [2] ±nn.n °C/min 0.1 to 1.1 . This parameter is only accessible if the ramp function is validated in the User Conguration 1
menu. This item refers to the maximum permitted water heat exchanger low temperature rates (°C/min). When capacity
loading is eectively limited by the ramp, mode 7 is active.
13 [2] ±nn.n °C/min 0.1 to 1.1 . This parameter is only accessible if the ramp function is validated in the User Conguration 1
menu. This item refers to the maximum permitted water heat exchanger high temperature rates (°C/min). When capacity
loading is eectively limited by the ramp, mode 7 is active.
14 [2] ±nn.n [3] [3 bis] 
15 [4] ±nn.n [3] [3 bis] 
16 [4] ±nn.n °C -16.6 to 16.6 
17 [4] ±nn.n [3] [3 bis] 
18 [4] ±nn.n [3] [3 bis] 
19 [4] ±nn.n °C -16.6 to 16.6 
[1] This item shall be masked when not used.
[2] This item is displayed in certain unit congurations only.
[2] Depends on the conguration of the reset type. If reset type is 1, 2 or 4 the unit is °C; if reset type is 3, the unit is mA.
[3 bis] The scale depends on the reset type selected.
[4] Depends on the value of items 9 or 10 of the user conguration menu 1.
If the reset type selection point
= 0: reset not selected
= 1: reset based on outside temperature
= 2: reset based on temperature dierence
= 3: reset based on 4-20 mA control
= 4: reset based on room temperature
4.3.8 - Description of the Setpoints menu

17
4.3.9 - Description of the Inputs menu

   
0 oPEn/CLoS - 
If the auto cooling/heating changeover function is not selected (User Conguration 1), this contact is used to start and stop the unit. If
the auto cooling/heating changeover function is selected, this contact is multiplexed with contact 4 to permit starting and stopping the
unit and the selection of heating/cooling/auto. This contact is only valid, if the unit is in the remote operating control (rEM) mode.
1 oPEn/CLoS - 
Status of remote contact 2. This contact permits the selection of a setpoint. This contact is only active if the unit is in the remote
operation type. See section 3.6.1 for the description of this contact and section 3.6.4 for the description of the setpoint selection function.
2 [1] oPEn/CLoS - 
If the automatic cooling/heating changeover function is not selected (User Conguration 1) this contact is used for the selection of
the heating or cooling operating mode. If the automatic cooling/heating changeover function is selected, this contact is multiplexed
with contact 1 to permit the starting and stopping of the unit and the selection of heating/cooling auto. This contact is only valid, if the
unit is in the remote operation control (rEM) mode.
3 [1] oPEn/CLoS - 
This item is only displayed on chillers.
If the heat reclaim option is available, this contact allows remote selection of heat reclaim.
If the free cooling option is available, this contact allows prevention of free cooling mode operation.
4 oPEn/CLoS -  If the contact is open, the unit stops.
5 [1] oPEn/CLoS - : pump operation status.
6 oPEn/CLoS - 
7 [1] oPEn/CLoS -  This contact permits selection of a demand limit. It is located on board PD5-BASE.
8 [1] oPEn/CLoS -  This contact is only used if the energy management option is used. It is multiplexed with contact 3 to
permit selection of one of three demand limits.
9 [1] oPEn/CLoS -  This contact is located on board NRCP2 of the energy management option. It is used during
unit occupied periods to permit selection of a setpoint or ice storage setpoint.
10 [1] oPEn/CLoS -  This contact is only used on units with energy management option to maintain
the occupied mode.
11 [1] oPEn/CLoS -  This contact is accessible on the energy management option board. It can be used for any customer
safety loop that requires unit shut-down if it is closed.
12 [1] nn.n mA 
This contact is only displayed when the energy management option is selected. This contact permits changing the lowest value,
based on a linear interpolation from 0 to 100% depending on the input value.
13 [1] nn.n mA 
14 [1] °C , only used if the energy management option is selected and the room temperature sensor is installed.
15 [1] °C  Only used if the heat reclaim option is selected.
16 [1] °C  Only used if the heat reclaim option is selected.
17 [1] °C  Only used if the heat reclaim option is selected.
18 [1] °C  Only used if the heat reclaim option is selected.
19 [1] oPEn/CLoS °C Heat reclaim condenser water ow control. Controls the heat reclaim condenser water circulation.
[1] This item is displayed in certain unit congurations only

18
4.3.10 - Description of the Outputs/Tests menu
4.3.10.1 - General
This menu displays the status of the controller outputs.
Moreover, when the machine is fully stopped (LOFF) the
outputs can be activated for manual tests (the access to the
tests is password controlled).
4.3.10.2 - Menu description

   
0 OUtPUts 1 - This menu permits access to outputs menu 1.
1 OUtPUts 2 - This menu permits access to outputs menu 2.

   
0 OUtPUts 1 Menu When selected this item authorises return to the previous menu.
1
b1b2b3b4
tESt
FAIL
Good
-command status
b1 = compressor A1
b2 = compressor A2
b3 = compressor A3
b4 = compressor A4
In , the Arrow buttons display 0001, 0010, 0100 and 1000 in succession, so as to force the compressor
outputs in turn. During the test phase, power to the compressor is switched on for 10 seconds only. It is then not possible
to restart the compressor for a further 30 seconds. When the test is completed the following is displayed:
- Fail: displayed if the test has failed because the compressor was not started or run in reverse rotation.
- Good: displayed if test was successful
2 b1b2b3b4
tESt
FAIL
Good
-command status
b1 = compressor B1
b2 = compressor B2
b3 = compressor B3
b4 = compressor B4
In as above
3 b1b2b3b4
tESt
FAIL
Good
-command status
b1 = compressor C1
b2 = compressor C2
b3 = compressor C3
b4 = compressor C4
In as above
4 b1b2
tESt
 In test mode, the arrow keys successively display 01 and 10, in order to authorise
the test for each valve in turn.
b1 = valve circuit A
b2 = valve circuit B
This item is only displayed for heat pump units.
5 b1b2 b3b4
tESt

b1 = compressor heater A1
b2 = compressor heater A2
b3 = compressor heater A3
b4 = compressor heater A4
In , the Arrow buttons display 0001, 0010, 0100 and 1000 in succession, so as to force the compressor heater
outputs in turn.
6 b1b2 b3b4
tESt

b1 = compressor heater B1
b2 = compressor heater B2
b3 = compressor heater B3
b4 = compressor heater B4
In , the Arrow buttons display 0001, 0010, 0100 and 1000 in succession, so as to force the compressor heater
outputs in turn.
7 b1b2 b3b4
tESt

b1 = compressor heater C1
b2 = compressor heater C2
b3 = compressor heater C3
b4 = compressor heater C4
In , the Arrow buttons display 0001, 0010, 0100 and 1000 in succession, so as to force the compressor heater
outputs in turn.
8 0 to 6
tESt
Permits selection of the fan to be tested.
1 = fan A1
2 = fan A2
3 = fan A3
4 = fan A4
5 = fan A5
6 = fan A6
9 0 to 6
tESt
Permits selection of the fan to be tested.
1 = fan B1
2 = fan B2
3 = fan B3
4 = fan B4
5 = fan B5
6 = fan B6

19

   
10 0 to 6
tESt
Permits selection of the fan to be tested.
1 = fan C1
2 = fan C2
3 = fan C3
4 = fan C4
5 = fan C5
6 = fan C6
11 b1b2b3b4
tESt

b1 = alarm relay
b2 = alert relay
b3 = general alarm relay (present if energy management option is used)
b4 = critical alarm relay output. Caution: If this output is connected, its activation will disconnect the general unit power
supply.
12 nnn
tESt
%
0% = EXV closed; 100% = EXV open
In test mode this permits selection of the required position.
13 nnn
tESt
%
0% = EXV closed; 100% = EXV open
In test mode this permits selection of the required position.
14 nnn
tESt
%
0% = EXV closed; 100% = EXV open
In test mode this permits selection of the required position.
15 nnn
tESt
% Only displayed if a variable speed controller is selected in circuit A.
In test mode, this permits selection of the required speed.
16 nnn
tESt
% Only displayed if a variable speed controller is selected in circuit B.
In test mode, this permits selection of the required speed.
17 nnn
tESt
% Only displayed if a variable speed controller is selected in circuit C.
In test mode, this permits selection of the required speed.
18
On
Stop
tESt
FAIL
Good
Forc
- command status. Not displayed if the unit does not control a pump.
On: pump is running
Stop: pump is stopped
Forc: this item is displayed only when the unit is stopped locally (LOFF). selecting this item authorises turning on the
pump with no delay and for an unlimited length of time. The pump will remain on until any button of the user interface is
pressed: it is then immediately stopped. If the unit is in CCN control, then the pump status is displayed in turn with “Forc” if
the pump status if forced through CCN.
During the , power to the pump is switched on for 10 seconds only. When the test is completed the following is
displayed:
- Fail: displayed if the test has failed because the pump was not started
- Good: displayed if the test was successful
19 On
OFF
tESt
FAIL
Good
Forc
- command status. Not displayed if the unit does not control a secondary pump.
On: pump is running
Stop: pump is stopped
Forc: this item is displayed only when the unit is stopped locally (LOFF). selecting this item authorises turning on the
pump with no delay and for an unlimited length of time. The pump will remain on until any button of the user interface is
pressed: it is then immediately stopped. If the unit is in CCN control, then the pump status is displayed in turn with “Forc” if
the pump status if forced through CCN.
During the , ...as above

   
0 OUtPUts 2 Menu When selected this item authorises return to the previous menu.
1 On
OFF
Forc
tESt
FAIL
Good
 Only displayed when the heat reclaim option is selected.
Forc: This item is only displayed when the unit is in Local o (LOFF) mode. Selecting this item permits starting up the pump
whithout delay and for an unlimited period. The pump stays on until any button on the user interface is pressed: it is then
immediately stopped. If the unit is under CCN control, the pump status is displayed alternatively with ‘Forc’, if the status is
forced by CCN.
2 b1b2 (b1) and heat reclaim condenser heater status (b2).
3 b1b2 b3Hot gas bypass valve status. Only displayed if the hot gas bypass option is selected.
b1 = hot gas bypass valve, circuit A
b2 = hot gas bypass valve, circuit B
b3 = hot gas bypass valve, circuit C
4 nnn
tESt
% Only displayed if the heat reclaim option is selected.
5 b1b2 b3b4
b1 = air condenser entering valve, circuit A
b2 = water condenser entering valve, circuit A
b3 = air condenser leaving valve, circuit A
b4 = water condenser leaving valve, circuit A
6 b1b2 b3b4
b1 = air condenser entering valve, circuit B
b2 = water condenser entering valve, circuit B
b3 = air condenser leaving valve, circuit B
b4 = water condenser leaving valve, circuit B
7 0 to 4
tESt

1 = stage 1
2 = stage 2
3 = stage 3
4 = stage 4

20
4.3.10.3 - Manual tests
This function allows the user to test the outputs individually,
if the machine is completely shut down (LOFF). To carry
out a manual test use the arrow keys to access the output to
be tested and press the Enter key (longer than 2 seconds)
to activate the modification mode. The password is auto-
matically requested, if it has not previously been verified.
The Outputs/Test LED on the user interface begins to flash.
Enter the desired test value and again press Enter to start
the test. ‘TESt’ is displayed on the 4-digit display alternately
with the value tested. The Outputs/Test LED stops flashing.
Press the Enter key or an arrow key to stop the test.
4.3.11 - Description of the Configuration menu
4.3.11.1 - General
This menu can be used to display and modify all configura-
tions: Factory, Service and User. Only the User Configuration
can be modified by the end-user. The Factory, Service and
master/slave configurations are not described in this
document. A configuration can only be modified if the unit
is fully stopped (LOFF).
The menus User 1 [USEr 1] and User 2 [USEr 2] are
password-protected. The other menus are directly accessible,
except if item 11 of the User 2 menu (password for all
configurations) has been validated.
4.3.11.2 - Password
A password must be entered in order to access the test
function or to modify a configuration. It is automatically
requested, if necessary: ‘EntEr PASS’ is displayed on the
4-digit display and the configuration menu LED flashes,
indicating that the modification mode is active. Press the
arrow keys until the value ‘11’ is displayed on the 4-digit
display. Press Enter to validate this. The configuration menu
LED stops flashing. If the password is correct, ‘Good’ is
displayed. If the password is incorrect, ‘PASS incorrEct’ is
displayed. The User password has a default value of 11.
This value can be modified through the Service configuration.
The password can be entered if the unit is fully stopped,
otherwise ‘ACCES dEniEd’ (access denied) will be displayed
on the 4-digit display. The controller automatically deacti-
vates the password after 5 minutes without activity (i.e. no
buttons pressed) or after powering up.

   
8 On
OFF
tESt

On: operating
OFF: stopped
9 b1b2 b3 (only displayed when the free cooling option is selected).
b1 = 3-way valves, circuit A
b2 = 3-way valves, circuit B
b3 = 3-way valves, circuit C
0 corresponds to a closed valve (cooling position) and 1 corresponds to an open valve (free cooling position)
10 b1b2 b3
tESt
(only displayed when the free cooling option is selected).
b1 = pump, circuit A
b2 = pump, circuit B
b3 = pump, circuit C
11 nn.n
tESt
Only displayed if the energy management option is selected.
12 b1b2
b1 = ready (ready-to-start or in operation)
b2 = in operation
13 YES/no  only. Lights or ashes all LEDs and blocks, so as to check that they are working properly.