HIdRos iCHiLL 100CX User manual

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 1 di 20
iCHiLL 100CX
Service Manual

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 2 di 20
USER INTERFACE
Display
Upper digits (red color): configurable, see parameter CF36 (PB1, PB2, PB4, Set-point
(parameter value)*, working set-point (real set-point modified from dinamic set-point,
Energy saving or function for units without water storage tank), Hysteresis, Machine
status **))
Lower digits (yellow color): configurable, see parameter CF43 (PB1, PB2, PB3, PB4,
Set-point (parameter value)*, working set-point (real set-point modified from dinamic set-
point, Energy saving or function for units without water storage tank), Hysteresis, RTC,
Machine status **)).
*the display visualizes chiller set point when the unit is on and in chiller mode, heating
set point when the unit is on and in heat pump mode, and OFF when the unit is in
standby.
**the display visualizes OnC when the unit is on and in chiller mode, OnH when the unit
is on and in heat pump mode, and OFF when the unit is in standby.
Icons of the Display
Icon Meaning
°C -°F
bar-PSI ON when the display visualizes a temperature or a pressure
On when the display visualizes the RTC, working hours, etc.
On flashing in case of alarm
On if the Energy Saving, dynamic set-point or function for units without
water storage tank are active.
OFF if a function above is enabled but not active.
On during menù visualization
On if heaters are activated (antifreeze heaters or/and boiler)
On flashing during defrost delay time.
On during defrost
On flashing if water flow switch is activated.
When the pump is OFF, the led is on flashing to indicate the correct
status of the digital input
On if at least one water pump is on
On if evaporator fans are activated
On if a compressor is on.
On flashing during the delay time for compressor activation.
On if open collector output is active
On if the controller is on in Heat or Cool mode
On in case of Low pressure alarm or High pressure alarm
Keys
1. Push to enter in the Menu
2. Push and hold (about 3 seconds) to set the clock
1. Push
to visualize the set point.
2. Push and release 2 times: 1st time is visualized the setpoint
(the value of the parameter), 2nd time is visualized the real
setpoint (when Energy saving, Dynamic setpoint or function
for units without water storage tank are enebled)
3. Push and hold to modify the setpoint
4. Push during parameter programming:
- to enter in parameter modification
- to confirm the changes of the parameter
5. Menù AlrM: push to reset
the alarms
1. Push and release to visualize all the probes configured
2. In programming mode it scrolls the parameter list
3. In programming mode increases the value of the
parameters.
1. Push and release to visualize all the probes configured
2. In programming mode it scrolls the parameter list
3. In programming mode decreases the value of the
parameters
1. Push and hold to switch on/off the machine (chiller or heat
pump depending from CF31 parameter)
1. Push and old to switch on/off the machine (chiller or heat
pump depending from CF31 parameter)
Key Combination
+ Push and hold to enter on the parameters programming
+1. Push to exit to the programming parameters
2. Push and hold to activate manual defrost

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REMOTE KEYBOARD VICX610
The Ichill has to be configured to manage the remote keyboard.
Upper digits (red color): configurable by parameter CF44 (PB1, PB2, PB4, Set-point
(parameter value)*, working set-point (real set-point modified from dinamic set-point,
Energy saving or function for units without water storage tank), Hysteresis, Machine
status **))
Lower digits (yellow color): configurable by parameter CF45 (PB1, PB2, PB3, PB4,
Set-point (parameter value)*, working set-point (real set-point modified from dinamic set-
point, Energy saving or function for units without water storage tank), Hysteresis, RTC,
Machine status **)).
*the display visualizes chiller set point when the unit is on and in chiller mode, heating
set point when the unit is on and in heat pump mode, and OFF when the unit is in
standby.
**the display visualizes OnC when the unit is on and in chiller mode, OnH when the unit
is on and in heat pump mode, and OFF when the unit is in standby.
Note:
the Ichill 100CX is not compatible with VI610 remote keyboard.
Key Function
Concerning the meaning of the keys, refer to paragraph 2.3.
Air/Air unit: using the remote keyboard with NTC sensor on board (VICX610S model
and parameter CF35 = 2), the read-out and the regulation are controlled by the NTC
sensor mounted on the remote keyboard.
When there is not communication between the keyboard and the instrument the display
visualizes ”noL” (no link message).
DISPLAY VISUALIZATION
Upper digits (red color): configurable by parameter CF36 (PB1, PB2, PB4, Set-point
(parameter value)*, working set-point (real set-point modified from dinamic set-point,
Energy saving or function for units without water storage tank), Hysteresis, Machine
status **)
Lower digits (yellow color): configurable by parameter CF43 (PB1, PB2, PB3, PB4,
Set-point (parameter value)*, working set-point (real set-point modified from dinamic set-
point, Energy saving or function for units without water storage tank), Hysteresis, RTC,
Machine status **).
*the display visualizes chiller set point when the unit is on and in chiller mode, heating
set point when the unit is on and in heat pump mode, and OFF when the unit is in
standby.
**the display visualizes OnC when the unit is on and in chiller mode, OnH when the unit
is on and in heat pump mode, and OFF when the unit is in standby.
Alarm visualization
When the instrument detects an alarm, the lower display shows the alarm code
alternated to probe value. The alarm icon ( ) is on flashing.
In case of HIGH PRESSURE alarm (HP), LOW PRESSURE alarm (LP) or WATER
FLOW SWITCH (Flow!), dedicated icons are on.
STD-BY visualization
It is possible to choose what visualize when the Ichill is in STD-BY.
CF 46 = 0: the display visualizes the same informations configured in CF36 e CF43
CF 46 = 1: the display visualizes the label “OFF”
CF 46 = 2: the display visualizes the label “StbY”
SILENCING THE BUZZER
Automatically:just after the alarm condition is recovered.
Manually:push and release one of the keys; the buzzer is stopped even if the alarm is
still active.
FIRST INSTALLING
After giving power supply to the instrument, the lower display can show “rtC” alternated
to the probe value: it is necessary to set the clock time.
If the probes are not connected, or they are faulty, the display shows the corresponding
alarm code.
In any case it is possible to proceed with clock setting.
HOW TO SET THE CLOCK RTC
1. Push “menu” key for some seconds and wait until “Hour” label appears.
2. Push “SET”: the hour value starts flashing.
3. Push nor o to change the value. Confirm by pushing “SET”; after some seconds
the controller will show “Min”.
4. Repeat points 2 and 3 to set other parameters:
Min: minutes (0÷60)

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UdAy: day of the week (Sun = Sunday, Mon = Monday, tuE = Tuesday, UEd =
Wednesday, tHu = Thursday, Fri = Friday, SAt = Saturday).
dAy: day of the month(0÷31)
MntH: Month (1÷12)
yEAr: Year (00÷99)
“HOT KEY”PROGRAMMING
Download from the Hot Key (previously programmed) to the Instrument
Memory
The controller has to be not connected to the power supply
Insert the Hot Key into dedicated connector
Connect the controller to the power supply
The download starts and lasts some seconds.
During this phase the whole regulation is locked and the “dOL” message is flashing.
“End “ message will appear if the programming result is good, after 15 sec. the
regulation automatically restarts
If “Err” message appears the operation has given bad result. Turn the controller off and
then on again to repeat the operation or restart the normal regulation.
Upload the Parameter from the Controller to the Hot Key
The instrument has to be connected to the power supply:
1. Insert the Hot Key
2. Push “menu”
3. Select “UPL” function with the arrow keys
4. Push “SET” key.The Upload starts immediately.
During this phase the whole regulation is locked and the “UPL” message is flashing.
“End “ message will appear if the programming result is good, after 15s the regulation
automatically restarts.
If “Err” message appears the operation has given bad result. Repeat the points 1-4 for a
new Upload.
PARAMETERS PROGRAMMING
“Pr1” Programming Level (User Level)
How to access the “Pr1” User Level:
1) Push “SET” + nkey for some seconds;the upper display shows “ALL” (first family
of parameters).
and icons are flashing.
2) Using oand narrows scroll the other family labels.
3) Push “SET” to enter and see all the parameter belonging to that family. The display
shows the first parameter label and its value.
Scroll the parameter list with oand narrows or modify the value as described in 9.4.
“Pr2” Programming Level (Factory Level)
“Pr2” parameters level is accessible through password:
1. Enter the “Pr1” level as described in 9.1.
2. Search parameter “Pr2”; “PAS” label appears on the upper side.
3. Push “SET”: the lower display shows “Pas” and the upper display shows “0”
flashing.
4. Set the password using o and n keys.
5. Push SET key to confirm the value.
How to Move a Parameter from “Pr2” Level to “Pr1” Level
Enter the “Pr2” level and select the parameter to move; keeping pressed “SET” key,
push and immediately release the nkey.
The led in lower display will light to indicate the presence of the parameter in “Pr1”.
Then release also SET key.
To move the parameter in “Pr2” again: keep pressed SET key and immediately release
the nkey. The led turns off so as the parameter is not more visible in “Pr1” but just in
“Pr2”.
Changing a Parameter Value
1. Access to programming mode Pr1 or Pr2
2. Select the parameter to modify
3. Push “SET”
4. Modify the value with o and nkeys
5. Push SET key again to confirm the new value;after some seconds next parameter
will be displayed
6. Exit the programming mode: push “SET” and owhen a parameter label is
displayed, or wait 15s (time-out) without pushing any keys.
NOTE: The new parameter value is also confirmed if, after changing it, no SET key is
pressed for the time-out to exit.
ATTENTION:
CF parameters (Configuration parameters) can be modified
only if the controller is in OFF (digital input) or STD-BY.
HOW TO CHANGE THE PASSWORD
To change the password you must know the previous value. This operation is possible
only starting from Pr2 level.
1) Enter the Pr1 level
2) Select a family of parameters (ST, or CF, or SD,…) and push “SET” key
3) Using o and n keys select the parameter “Pr2”, then push “SET” key. The lower
display shows “PAS” and the upper display shows 0flashing
4) Use nand okeys to input the active PASSWORD; push “SET” to confirm the
value and enter to Pr2 level
5) Search “Pr2” parameter with nand o keys
6) Push “SET” key to enter the new value (flashing)
7) Insert the new password with oand n keys.
8) Push “SET” key to confirm it.
9) The upper display will flash for few seconds then, next parameter will be showed.
10) Exit the programming by pushing “SET” and o together or wait the time-out.
START /STOP CHILLER OR HEAT PUMP
Press key for 3 seconds:
the unit starts or stops the Chiller cycle if the parameter CF31 =0
the unit starts or stops the Heat Pump cycle if the parameter CF31 =1
The icon flashes for 3 seconds when the controller is waiting to turn on/off.
To move from Chiller mode to Heat Pump mode or vice versa, it is necessary to stop the
current cycle and then restart the new (Chiller STD-BY Heat Pump) .
Press key for 3 seconds:
the unit starts or stops the Heat Pump cycle if parameter CF31 =0
the unit starts or stops the Chiller cycle if parameter CF31 =1
The icon flashes for 3 seconds when the controller is waiting to turn on/off.
To move from Chiller mode to Heat Pump mode or vice versa, it is necessary to stop the
current cycle and then restart the new (Chiller STD-BY Heat Pump) .
STAND-BY FUNCTION
When the controller is working, it is possible to switch it in std-by modepushing or
key.
In stand-by is possible:
Display probes value using arrow keys.
Display and modify the set-point.
Enter the “menu” function
“MENU”FUNCTION
Access the “menù” to perform the following operations:
1. Display and reset the active alarms.
2. Display and reset working hours of compressors and water pumps
3. Display delay time between two defrost cycles
4. Upload the parameters map from the controller to the Hot Key (see 8.2).
5. Display/reset the alarm log.
During the Menu operations the “menu” icon is on.
Access to the “menu”
Push and release the “menu” key. The ” menu” icon is on.
Exit from the “menu”
Push and release the “menu”key or wait the time out.
The “menu” icon disappears.
How to Display the Alarm Events
Enter the “menu”:
1. Use oor n keys to find “ALrM” label.
2. Push and release the “SET” key.
3. Use oor n keys to scroll the alarm list.
To exit the function “menu” push and release the “menu” key or wait the time-out. The
“menu” icon disappears.
How to Reset an Alarm Event
1) Enter the function “menu”.
2) Use oor nkeys to find the “ALrM” label.
3) Push and release the “SET” key the lower display shows the alarm code.
4) Lower display shows the alarm code.

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Upper display shows “rSt” label if the alarm can be reset, “NO” label if it is not
possible.
Use oor nkeys to scroll the alarm list.
5) Push “SET” key when “rSt” is lighted to reset the alarm; after a while the read-out
move to next alarm.
6) To exit the function menu push and release the “menu” key or wait the time-out.
The “menu” icon disappears.
Compressors And Pumps Working hours
Enter the function “menu”.
Use oor nkeys to find on the lower display:
C1Hr (Compressor n°1 working hours),
C2Hr (Compressor n°2 working hours),
PFHr (Evaporator Water pump or supply fan working hours),
PCHr (Condenser water pump working hours).
The clock icon is lighted.
Reset Working Hours
1. Enter the function “menu”.
2. Use o or nkeys to find on the lower display the C1Hr, C2Hr, PFHr or PCHr.
3. Push “SET” key for 3 seconds: the upper display shows “0” indicating the reset.
4. To exit the function menu push and release the “menu” key or wait the time-out.
The “menu” icon disappears.
How to Display the Delay Time Between Two Defrost
1. Enter the function “menu”.
2. Use o or n keys to find on the upper display the “dEF” label; the lower display
shows delay time between two defrost (minutes and seconds).
3. The icon is flashing.
4. To exit the function “menu” push and release the “menu” key or wait the time-out.
The “menu” icon disappears.
How to See the Alarm Log
1. Enter the function “menu”.
2. Use o or n keys to find “ALOG” label.
3. Push “SET” key: the lower display showsthe alarm code, the upper display shows
“n°” followed by the progressive number.
4. With oor n scroll the alarm list.
5. To exit from ALOG function push “menu” key or wait the time-out delay is
expired.
Memory capacity is 50 alarm structured in a FIFO list (first in first out). Each new alarm
will take the place of the oldest alarm contained in the list ( the read-out is ordered from
the oldest to the newest).
How to Reset the Alarm Log
1) Enter the function “menu”.
2) Use o or n keys to find “ALOG” label.
3) Push “SET” key.
4) Use oor n keys to find “ArSt” (Alarm reset) label on the lower display; the upper
display shows “PAS”.
5) Push “SET” key and then enter the password value using oor n keys; confirm the
value pushing “SET” key.
6) The ArSt label starts flashing for 5s, to confirm the alarm logging data is reset.
KEYBOARD FUNCTIONS
How to See the Set Point Value
Push and release the “SET” key.
Lower display shows: “SetC” set point chiller;
“SetH” set point heat pump.
The upper display shows the value.
Note:
SetH is available only if configured for Heat Pump.
How to Change the Set Point Value
1) Push and hold “SET” key (for about 3 seconds).
2) The setpoint value is flashing.
3) Use o and nto increase or decrease the new value.
4) Push and release “SET” key or wait the time-out to exit the programming.
How to See the real Set Point
When Energy Saving, Dynamic Set Point or Function For Units Without Water Storage
Tank are enabled is possible to see the real set point.
When the machine is running:
push “SET” key once: lower display shows “SetC” (setpoint chiller) or “SetH”
(setpoint heat pump) and upper display shows the value.
push “SET” key again:
- when “Energy Saving” is enabled the lower display shows “SEtS” (Energy
saving setpoint) and upper display shows the value.
- when “Dynamic Set” is enabled,the lower display shows “SEtd” (dynamic
set point) and upper display shows the value.
- when the function for units without water storage tank is enabled the lower
display shows “Setr” (real set point) and upper display showsits value.
- when two function above are both enabled, the lower display shows “Setr”
(real set point) and upper display shows its value.
REMOTE ON/OFF
If a digital input is configured as remote on/off, it is possible to switch on or switch off the
unit.
The remote ON/OFF:
It has priority over the keyboard
The unit can be switched on and off by keyboard only if the digital input set
the unit switched on
When the digital input is disabled the instrument returns to its condition prior
to activation
It is possible to navigate the functions menu
The upper display visualizes “OFF” and the decimal LED will be flashing.
HOW TO DISABLE A COMPRESSOR
A compressor can be disabled for maintenance; the unit continues to work normally but
only with one compressor.
How to disable a compressor:
1. Access to the programming parameters mode.
2. Set the parameter CO12 = 1 or CO13=1 (compressor 1 or 2 = OFF).
To enable the compressor set C011=0 or CO12= 0.
DYNAMIC SET POINT
This function is useful to save energy or to use the unit during particular external air
temperature condition.
The setpoint is changed according to the external temperature or 4..20mA trasducer.
The Dynamic Set point function is enabled:
- if Sd01 = 1 and CF06 = 3 (Pb3 probe is configured as 4..20mA signal for dynamic set
point), or;
- if Sd01 = 1 and CF07 = 3 (Pb4 probe is configured as outside air temperature).
ENERGY SAVING
It’s possible to change the setpointfor the Energy saving periods.
The activation can be:
weekly/daily; in this case is required a controller with RTC on board
by digital input configured as “Energy saving”
The setpoint during an Energy Saving period is:
Chiller: setpoint =SET+ES10 differential=ES11
Heat pump: setpoint =SET+ES12 differential=ES13
Daily Programming
It is necessary to set parameters ES03 ES09 to activate the Energy saving (one
parameter for each day of the week).
The value “1” enable the function for that day.
Eg: ES03 = 1 means that every Monday the Energy Saving is activated for all day.
Programmable timer (RTC is required)
It’s possible to activate the Energy Saving for a period of the day by setting the start time
end the end time.
ES01 Energy Saving start hour
ES02 Energy Saving stop hour
Eg: ES01 = 8.0 and ES02 = 10.0: Energy Saving is active from 8 to 10.0for all the days
of the week.
Eg: ES01 = 23.0 and ES02 = 8.0: Energy Saving is active from 23.0 to 8.0 of the next
morning for all the days of the week.
Energy Saving is disabled if the parameters ES01 / ES02 are both “0”.
Energy Saving by Digital Input
The function is enabled when a digital input, configured as Energy Saving, is activated
by remote contact.
DEFROST FUNCTION
The defrost cycle is enabled only if the following conditions are satisfied:
1. the unit is working in heat pump mode (heat pump enabled by parameter CF28)
2. the unit is air/air or air/water (CF01=0 or CF01=1)

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3. dF01=1 defrost cycle enabled
4. one relay configured as reversing valve
5. Pb3 or Pb4 must be configured as condensing probe (without active faulty probe
alarms).
If only one of these conditions is not satisfied the defrost does not operate.
When the condensing temperature/pressure falls below dF03, starts the counting of time
dF10. When the counting ends, if the temperature/pressure is lower than dF03 the
defrost starts.
The compressor is switched off for dF08 and, after dF08/2, the the 4-ways reversing
valve is activated. When the counting of dF08 ends the compressor is switched on
(CO01 and CO02 are disabled during the defrost).
The defrost ends when the temperature/pressure is >dF04 or for maximun time dF07.
At the end of the defrost, the compressor is switched off for dF09 and, after dF09/2, the
the 4-ways reversing valve is deactivated.
When the counting of dF09 ends, the compressor is switched on.
Forced Defrost
This function is enabled if dF05 0 and allows to activate a defrost even if the interval
time between defrosts is running and the temperature/pressure value is lower than the
parameter dF19 for the dF05 time.
If during the time delay dF05 thetemperature/pressure becomes higher than dF19+dF20
value, the whole procedure is stopped and the time delay dF05 will be reloaded.
Combined Defrost
This function is enabled if CF07 = 5 and Pb4 is configured as NTC probe for combined
defrost (placed typically on the evaporator coil). The detected temperature allows to
calculate a better defrost cycle giving the start and the end commands for the cycle
itself.
Functioning:
when the temperature detected by Pb3 probe is lower than dF03, the time delay dF10
starts.
When the time dF10 is elapsed the controller check Pb4 value: if it is lower than dF11
the defrost procedure starts, otherwise the unit still works in Heat Pump.
When Pb4 value is higher than dF12 the combined defrost ends.
Manual Defrost
This function is enabled if:
at least one compressor is running
the condenser temperature/pressure is lower than dF03
if the “combined defrost” is enabled, Pb4 value must be lower than dF11
If the conditions above are satisfied, by pushing o + SET (before o, then SET) for more
than 5 sec. the defrost cycle immediately starts.
FUNCTION FOR UNITS WITHOUT WATER STORAGE TANK
This function manages the compressor(s) to optimize the production of refrigerated
water in units with low thermal loads.
The function analyses the compressor operating time (from regulation start-up to
shutdown request) and compares it with the time configured with parameter CO01
(minimum ON time); when the regulation temperature reach the set point and the
operation time is lower than CO01, the controller modifies the set point and the
differential to increase the compressor operating time.
If the compressor operates for longer than the minimum time (CO01), when ST15 time is
elapsed (this time starts when the CO01 is elapsed) the function progressively restores
the set point and hysteresis to the initial values (ST01 or ST03); in this case:
Heat pump: whenever the time ST15 expires, the function subtracts the ST13 value to
the setpoint and ST14 value to the hysteresis
Chiller: whenever the time ST15 expires, the function adds the ST13 value to the set
point and subtracs the ST14 value to the hysteresis.
When the unit is switched OFF (by digital input or by keyboard), the set point and
differential are restored to the initial values (ST01…ST04).
Below the formulas for calculating the new set point and hysteresis.
Heat pump:
Set point = set point heat pump + Par ST13 + (CO01 – compressor working time*) x
ST16 / 10
Differential = differential heat pump + Par.ST14 + (CO01 - actual time*) x Par ST16 / 10
Chiller:
Set point = set point cool – [Par ST13+ (CO01 - compressor working time *) x Par ST16/
10]
Differential = differential chiller + Par.ST14 + (CO01 - compressor working time *) x Par
ST16 /10
*Compressor working time is in sec x 10.
The function for units without water storage tank is compatible with Energy Saving
function or with the Dynamic set point.
Visualization of the set point on the display:
Chiller with energy saving or dynamic set point enabled:
push “SET” button once = SetC (set point value from parameter)
push “SET” button twice = Sets or Setd (real operating set point value)
Chiller with energy saving or dynamic set point and function for machine without water
storage tank enabled:
push “SET” button once = SetC (set point value from parameter)
push “SET” button twice = Setr (real operating set point value)
Heat pump with energy saving or dynamic set point enabled:
push “SET” button once = SetH (set point value from parameter)
push “SET” button twice = Sets or Setd (real operating set point value)
Heat Pump with energy saving or dynamic set point and function for machine without
water storage tank enabled:
push “SET” button once = SetH (set point value from parameter)
push “SET” button twice = Setr (real operating set point value)
When the function for units without water storage tank is enabled, the protection for high
temperature o low temperature is active; the compressor/s will be switched off if:
Chiller: outlet evaporator temperature < ST11
Heat pump: outlet evaporator temperature > ST12
GEOTHERMAL CHILLER FUNCTION
This function, to work, requires the Ichill remote keyboad with internal probe to detect the
room temperature; the function is enabled if the parameter CF03=2.
The unit works according to Pb2 probe and the set point ST01 and ST03.
During the regulation, the compressor/s status (only compresor/s status) depend on the
room temperature and the user set point configured with parameters ST18 and ST22.
When the room temperature reach the user set point, the compressor/s are switched off;
in this case the other loads status (pump, fan, etc.) doesn’t depend from compressor
status (they work normally).
Manufacturer set point
The unit works on the manufacturer set point:
set point chiller ST01, differential chiller ST02;
set point Heat pump ST03, differential Heat pump ST04.
User set point
To visualize the room set point press the “SET” button on the remote keyboard or on the
controller.
To change the room set point press and hold the “SET” button: the set point value is
displayed flashing on upper display. To change its value press oor n keys and confirm
with “SET”.
Dynamic set point
The dynamic set point function, if enabled (Sd01=1), works normally (probe PB4) and
modify ST01 / ST03 set point. SEtd dynamic set point is displayed in the functions menu.
Energy saving
The Energy saving function,if enabled by clock or digital input, modify the room set point
(ST18 / ST22).
UNLOADING FUNCTION
High temperature inlet evaporator
The function allows the machine to operate in case of high evaporator inlet temperature
(to avoid possible high pressure intervention).
When the evaporator inlet temperature is greater than CO17 set point for a time of
CO19, a compressor (if two compressors are working) or the capacity control (in case of
one compressor with capacity step) is switched off.
When only one compressor is working or only the capacity step is active, the function
has not effect on the regulation.
When the function is activated the lower display shows “AEUn” label alternated to
default visualization.
The function is disabled if the evaporator inlet temperature is lower than CO17 set point
– CO18 differential.
Note
When the unloading function is active, to avoid a prolonged working time in this
condition, if the evaporator inlet temperature is lower than CO17 set point and higher
than CO17 – CO18 for a time of CO20, the function is disabled.
CO20 delay time starts when the evaporator inlet temperature is lower than CO17 set
point.
High pressure in chiller mode
The function allows the machine to operate incase of high outside temperature (start-up
in summer with hot external temperature), to avoid possible high pressure alarm.

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Pb3 probe has to be configured to use a pressure transducer.
When the evaporator condenser pressure is greater than CO21 set point, a compressor
(if two compressors are working) or the capacity control (in case of one compressor with
capacity step) is switched off.
When only one compressor is working or only the capacity step is active, the function
has not effect on the regulation.
The lower display shows “ACUn” alternated to default visualization.
When the evaporator condenser pressure falls below CO21 – CO22, the function is
disabled and, if required for the regulation, the previously shut down
compressor/capacity step can be re-inserted.
Note
When the unloading function is active, to avoid a prolonged working time in this
condition, if the evaporator condenser pressure is lower than CO21 set point and higher
than CO21 – CO22 for a time of CO25, the function is disabled.
CO25 delay time starts when the evaporator condenser pressure is lower than CO21 set
point.
Low pressure in heat pump mode
The function allows the machine to operate in case of low outside temperature (start-up
in winter with ice-covered batteries), to avoid possible low pressure alarm.
Pb3 probe has to be configured to use a pressure transducer.
When the evaporator condenser pressure is lower than CO23 set point, a compressor
(if two compressors are working) or the capacity control (in case of one compressor with
capacity step) is switched off.
When only one compressor is working or only a capacity step is active, the function has
not effect on the regulation.
The lower display shows “ACUn” alternated to default visualization.
When the evaporator condenser pressure is greater than CO23 + CO24, the function is
disabled and, if required for the regulation, the previously shut down
compressor/capacity step can be re-inserted.
Note
When the unloading function is active, to avoid a prolonged working time in this
condition, if the evaporator pressure is higher than CO23 set point and lower than CO23
+ CO24 for a time of CO25, the function is disabled.
CO25 delay time starts when the evaporator pressure is higher than CO23 set point.
BOILER FUNCTION
The boiler function can be used for heating (Ar20=1) or for support the heating function
(Ar20=0).
To enable the function is necessary:
unit configured in Heat Pump mode
Pb4 configured as external air probe (CF07=3)
Heating Integration Control Ar20=0
Anti-freeze/support heater 1:
Heather ON if:
outside air temperature < Ar21 for more than Ar23 time
regulation probe < Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
Ar23 delay time starts when outside temperature falls below Ar21 set point.
If outside temperature exceeds the Ar21 + Ar22 when the counting of Ar23 is running,
the boiler function is not enabled and the Ar23 time is re-loaded.
Heather OFF if:
outside air temperature > Ar21 + Ar22
regulation probe > Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
If outside air temperature falls below the Ar25 set point the compressors are switched
off; when outside air temperature is higher than Ar25 set point + the Ar26 differential the
compressors are switched on.
Anti-freeze/support heater 2:
Heather ON if:
outside air temperature < Ar21 for more than Ar23 + Ar24 time
regulation probe < Heating set point– (ST04 / 2) or real Heating set point – (ST04/ 2)
(if Energy saving or Dynamic set point or function for units without water storage tank
are enabled)
Ar23 delay time starts when outside temperature falls below Ar21 set point.
Ar24 delay time starts when Ar23 is elapsed.
If the outside temperature exceeds Ar21 + Ar22 when the counting of Ar23 is running,
the boiler function is not enabled and the Ar23 time is re-loaded.
Heather OFF if:
outside air temperature > Ar21 + Ar22
regulation probe > Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
If the outside air temperature falls below the Ar25 set point the compressors are
switched off; when outside air temperature is higher than Ar25 set point + the Ar26
differential, the compressors are switched on.
Heating Control Ar20=1
Anti-freeze/support heater 1:
Heather ON if:
outside air temperature < Ar21 for more than Ar23 time
regulation probe < Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
Ar23 delay time starts when outside temperature falls below Ar21 set point.
When the heather is switched on, the compressor and condenser fans are switched off.
If the outside temperature exceeds Ar21 + Ar22 when the counting of Ar23 is running,
the boiler function is not enabled and the Ar23 time is re-loaded
Heather OFF if:
outside air temperature > Ar21 + Ar22
regulation probe > Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
If the outside air temperature exceeds the Ar21 + Ar22 the heater is switched off and the
compressor and fans are switched on (if the heat regulator calls for it).
Anti-freeze/support heater 2:
Heather ON if:
outside air temperature < Ar21 for more than Ar23 + Ar24 time
regulation probe < Heating set point– (ST04 / 2) or real Heating set poinf – (ST04/ 2)
(if Energy saving or Dynamic set point or function for units without water storage tank
are enabled)
Ar23 delay time starts when outside temperature falls below Ar21 set point.
Ar24 delay time starts when Ar23 is elapsed.
If the outside temperature exceeds Ar21 + Ar22 when the counting of Ar23 is running,
the boiler function is not enabled and the Ar23 time is re-loaded.
Heather OFF if:
outside air temperature > Ar21 + Ar22
regulation probe > Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
MAINTENANCE FUNCTION
The maintenance warning is activated if the compressor 1, compressor 2, evaporator
water pump / supply fan (air/air unit), condenser water pump have worked for a time set
by parameter (CO14, CO15, CO16 and CO28).
The maintenance alarm code are:
A13=comp.1, A14=comp.2, A15=water pump or supply fan, A20=condenser pump.
The maintenance warning is only a visual signaling and does not influence the
regulation.
To reset the warning is necessary to set the operating hours at zero value in the menù
function.
BLACK OUT
After a black-out:
1. the controller restarts from the pervious status.
2. The defrost cycle is stopped.
3. All the working time delay will be reloaded.

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 8 di 20
ALARM CODE AND EVENTS
Cod Meaning
P1 Pb1 probe alarm
P2 Pb2 probe alarm
P3 Pb3 probe alarm
P4 Pb4 probe alarm
A01 High pressure switch alarm
A02 Low pressure switch alarm
A03 Low temperature alarm of the supplied temperature
A04 Low temperature alarm of the outlet air from evaporator.
A05 High temperature High pressure
A06 Low temperature Low pressure
A07 Anti freeze alarm
A07 Anti freeze alarm motocondensing unit
A08 Evaporator water flow alarm (air/water or water/water units)
A09 Compressor 1 thermal protection alarm
A10 Compressor 2 thermal protection alarm
A11 Condenser fan thermal protection alarm
A12 Defrost error alarm
A13 Compressor 1 maintenance warning
A14 Compressor 2 maintenance warning
A15 Water pump or supply air fan (air/air) maintenance warning
A16 High temperature evaporator inlet water
A17 Thermal protection alarm for evaporator water pump / supply fan
A18 Thermal protection alarm for condenser water pump
A19 Condenser water flow alarm
A20 Condenser water pump maintenance alarm
rtC Clock alarm
rtF Clock alarm
EE EEPROM error alarm
ACF1 Configuration alarm
ACF2 Configuration alarm
ACF3 Configuration alarm
ACF4 Configuration alarm
ACF5 Configuration alarm
FErr Functioning alarm
AFr Frequency alarm
ALOC
General alarm for machine block
bLOC General alarm, signal only

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 9 di 20
PARAMETER TABLE
SUB MENU SELECTIONS
LABEL Meaning
ALL Shows the whole set of parameters
ST It contains only the regulation parameters
CF It contains only the configuration parameters
SD It contains only the dynamic Set point parameters
ES It contains only the Energy Saving parameters
CO It contains only the compressor parameters
FA It contains only the fan regulation parameters
Ar It contains only the anti freeze parameters
DF It contains only the defrost parameters
AL It contains only the alarm parameters
Regulation Parameters
Paramete
r
Description Min Max Meas. Resolution
ST01 Summer Set point ST05 ST06 °C/°F Decimal
integer
ST02 Summer differential 0.0
0 25.0 45 °C °F Decimal integer
ST03 Winter Set point ST07 ST08 °C/°F Decimal
integer
ST04 Winter differential 0.0
0 25.0 45 °C °F Decimal integer
ST05 Minimum set point limit for ST01 (summer) -50.0
-58 ST01 °C °F Decimal integer
ST06 Maximum set point limit for ST01 (summer) ST01 110
230 °C °F Decimal
integer
ST07 Minimum set point limit for ST03 (winter) -50.0
-58 ST03 °C
°F Decimal
integer
ST08 Maximum set point limit for ST03 (winter) ST03 110
230 °C °F Decimal
integer
ST09 Regulation band 0.0
0 25.0 45 °C °F Decimal integer
Function for units without water storage tank
Paramete
r
Description Min Max Meas. Resolution
ST10 Chiller unit without water storage tank
0= function disabled
1= function activated
0
1
ST11 Minimum temperature Set point for outlet water in chiller mode (unit without water storage
tank) -50.0
-58 110 230 °C °F Dec int
ST12 Maximum temperature Set point for outlet water in HP function (unit without water storage
tank) -50.0
-58 110 230 °C °F Dec int
ST13 Differential set point for chiller / heat pump function 0.0
0 25.0 45 °C °F Dec int
ST14 Offset of the differential for chiller / HP function 0.0
0 25.0 45 °C °F Dec int
ST15 Compressor operation time above which the delta set point and delta differential for chiller /
HP function is decreased 0
250 Sec 10 sec
ST16 Constant for calculationg the set point value and differential for chiller/HP function 0 250
ST17 Delay for changing the operating set point 1 250 Sec 10 sec
Geothermal chiller function
Paramete
r
Description Min Max Meas. Resolution
ST18 Room set point in chiller function ST20 ST21 °C/°F dec/int
ST19 Room differential in chiller function 0.0
0 25.0 45 °C °F Dec int
ST20 Minimum value of the room set point in chiller function -50.0
-58 ST18 °C °F Dec int
ST21 Maximum value of the room set point in chiller function
ST18 110
230 °C °F Dec
int
ST22 Room set point in heat pump function ST24 ST25 °C/°F dec/int
ST23 Room differential in heat pump function 0.0
0 25.0 45 °C °F Dec int
ST24 Minimum value of the room set point in heat pump function -50.0
-58 ST22 °C °F Dec int

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 10 di 20
ST25 Maximum value of the room set point in heat pump function
ST22 110
230 °C °F Dec
int
Pr2 Password 0 999
Configuration Parameters
Paramete
r
Description Min Max Meas. Resolution
CF01 Unit model:
0= Chiller air / air
1= Chiller air / water
2= Chiller water / water
3= Chiller water / water with reversal on water circuit
0
3
CF02 Motocondensing unit
0= No
1= Yes
0 1
CF03 Regulation probe
0= Pb1 regulation
1= Pb2 regulation
2= PB2 regulation and compressors activation with user set on PB1 probe
0
2
CF04 Pb1 configuration
0= Probe not enabled
1= NTC temperature of evaporator inlet
2= Digital input for temperature regulation demand
3= Digital input cooling demand
0
3
CF05 Pb2 configuration
0= Probe not enabled
1= NTC temperature of evaporator outlet
2= Digital Input for antifreeze alarm
3= Digital input for heating demand
4= External air temperature
0
4
CF06 Pb3 configuration
0= Probe not enabled
1= NTC temperature condensing control
2= 4..20mA for condensing pressure
3= 4..20ma for Dynamic Set point
4= NTC temperature for anti freeze alarm (water/water)
5= NTC high temperature probe of system inlet water
6= 0..5V for condensing pressure
0
6
CF07 Pb4 configuration
0= Probe not enabled
1= NTC condensing control
2= Multifunction digital input
3= External air temperature
4= NTC temperature for anti freeze alarm (water/water)
5= NTC temperature for combined defrost
6= NTC temperature for logging
6= NTC condenser outlet temperature (water/water units whith reversal on water circuit)
7= NTC high temperature probe of system inletwater
0
7
CF08 ID1 configuration
0= 1st compressor thermal protection
1= Condenser fan thermal protection
2= Evaporator flow switch alarm
3= Remote On/off
4= Remote Cooling/Heating
5= 2nd compressor thermal protection
6= 2nd compressor or step request (Motocondensing unit)
7= End defrost
8= Energy Saving
9= Anti Freeze alarm
10= 1st and 2nd compressor thermal protection
11= General alarm (unit shutdown)
12= Evaporator water pump thermal protection alarm/ supply fan thermal protection alarm
13= Condenser water pump thermal protection alarm
14= Condenser flow switch alarm
15= not used
0
15

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 11 di 20
CF09 ID2 configuration
0= 1st compressor thermal protection
1= Condenser fan thermal protection
2= Evaporator flow switch alarm
3= Remote On/off
4= Cooling/Heating
5= 2nd compressor thermal protection
6= 2nd compressor or step request (Motocondensing unit)
7= End defrost
8= Energy Saving
9= Anti Freeze alarm
10= 1st and 2nd compressor thermal protection
11= General alarm for total unit shutdown
12= Evaporator water pump thermal protection alarm/ supply fan thermal protection alarm
13= Condenser water pump thermal protection alarm
14= Condenser flow switch alarm
15= not used
0
15
CF10 ID5 configuration
0= 1st compressor thermal protection
1= Condenser fan thermal protection
2= Evaporator flow switch alarm
3= Remote On/off
4= Cooling/Heating
5= 2nd compressor thermal protection
6= 2nd compressor or step request (Motocondensing unit)
7= End defrost
8= Energy Saving
9= Anti Freeze alarm
10= 1st and 2nd compressor thermal protection
11= General alarm for total unit shutdown
12= Evaporator water pump thermal protection alarm/ supply fan thermal protection alarm
13= Condenser water pump thermal protection alarm
14= Condenser flow switch alarm
15= not used
0
15
CF11 Pb4 configuration in digital input mode
0= 1st compressor thermal protection
1= Condenser fan thermal protection
2= Evaporator flow switch alarm
3= Remote On/off
4= Cooling/Heating
5= 2nd compressor thermal protection
6= 2nd compressor or step request (Motocondensing unit)
7= End defrost
8= Energy Saving
9= Anti Freeze alarm
10= 1st and 2nd compressor thermal protection
11= General alarm for total unit shutdown
12= Evaporator water pump thermal protection alarm/ supply fan thermal protection alarm
13= Condenser water pump thermal protection alarm
14= Condenser flow switch alarm
15= not used
0
15
CF12 ID1 input polarity
0= active for closed contact
1= active for open contact
0 1
CF13 ID2 input polarity
0= active for closed contact
1= active for open contact
0 1
CF14 ID3 input polarity
0= active for closed contact
1= active for open contact
0 1
CF15 ID4 input polarity
0= active for closed contact
1= active for open contact
0 1
CF16 ID5 input polarity
0= active for closed contact
1= active for open contact
0 1
CF17 Pb1 input polarity
0= active for closed contact
1= active for open contact
0 1
CF18 Pb2 input polarity
0= active for closed contact
1= active for open contact
0 1
CF19 Pb4 input polarity
0= active for closed contact
1= active for open contact
0 1

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Manual IC100CX GB Page 12 di 20
CF20 RL4 configuration of the relay 4
0 = Alarm relay
1 = compressor 1 capacity step
2 = compressor 2
3 = ON/OFF ventilation
4 = reversing valve
5 = anti-freezer heaters / integration heater n.1
6 = solenoid valve on water circuit
7 = solenoid valve on water circuit only for heat pump
8= anti-freezer heaters / integration heater n. 2
9 = evaporator water pump / supply fan (air / air unit)
10= condenser water pump
0
10
CF21 RL5 configuration of the relay 5
0 = Alarm relay
1 = compressor 1 capacity step
2 = compressor 2
3 = ON/OFF ventilation
4 = reversing valve
5 = anti-freezer heaters / integration heater n.1
6 = solenoid valve on water circuit
7 = solenoid valve on water circuit only for heat pump
8= anti-freezer heaters / integration heater n. 2
9 = evaporator water pump / supply fan (air / air unit)
10= condenser water pump
0
10
CF22 4mA / 0,5V corresponding to the pressure value of the transducer 0.0
0 50.0 725 Bar Psi Decimal integer
CF23 20mA / 5V corresponding to the pressure value of the transducer 0.0
0 50.0 725 Bar Psi Decimal integer
CF24 Pb1 Offset -12.0
-21 12.0 21 °C °F Decimal
integer
CF25 Pb2 Offset -12.0
-21 12.0 21 °C °F Decimal
integer
CF26 Pb3 Offset -12.0
-21
-12.0
-174
12.0
21
12.0
174
°C
°F
Bar
Psi
Decimal
Integer
Decimal
integer
CF27 Pb4 Offset -12.0
-21 12.0 21 °C °F Decimal
integer
CF28 Chiller or Heat Pump configuration
0= chiller and heat pump selected by keyboard
1= chiller and heat pump selected by digital input
2= chiller and heat pump selected by probe
3= only chiller unit
4= only heat pump unit
0
4
CF29
A
utomatic Changeover Setpoint -50.0
-58 110 230 °C °F Decimal
integer
CF30 Differential for functioning mode 0.1
0 25.0 45 °C °F Decimal integer
CF31 Chiller or Heat pump key configuration
0= chiller / heat pump
1= chiller / heat pump
0
1
CF32 Celsius or Fahrenheit selection
0= °C / °BAR
1= °F / °psi
0
1
CF33 Power supply frequency
0= 50 Hz
1= 60 Hz
2 = DC power supply (PWM configrured as output for an external alarm relay)
0
2
CF34 Serial Address for monitoring 1 247
CF35 Remote terminal keyboard
0= Not used
1= 6 keys
2= 6 keys with NTC probe mounted on board
0
2
CF36 Default viewing of upper display of the controller
0 = PB1 visualization
1 = PB2 visualization
2 = No visualization
3 = PB4 visualization
4 = Real working set point (set point modified from Energy Saving, Dynamic set point, function for units
without water storage tank)
5 = Unit status
6 = No visualization
7 = No visualization
8 = Working differential
9 = Unit set point (parameter value)
0
8
CF37 Firmware Release
CF38 Eeprom
–
Parameter mapping

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 13 di 20
CF39 RL2 configuration
0 = Alarm relay
1 = compressor 1 capacity step
2 = compressor 2
3 = ON/OFF ventilation
4 = reversing valve
5 = anti-freezer heaters / integration heater n.1
6 = solenoid valve on water circuit
7 = solenoid valve on water circuit only for heat pump
8= anti-freezer heaters / integration heater n. 2
9 = evaporator water pump / supply fan (air / air unit)
10= condenser water pump
0
10
CF40 RL3 configuration
0 = Alarm relay
1 = compressor 1 capacity step
2 = compressor 2
3 = ON/OFF ventilation
4 = reversing valve
5 = anti-freezer heaters / integration heater n.1
6 = solenoid valve on water circuit
7 = solenoid valve on water circuit only for heat pump
8= anti-freezer heaters / integration heater n. 2
9 = evaporator water pump / supply fan (air / air unit)
10= condenser water pump
0
10
CF41 Open collector output configuration
0 = Alarm relay
1 = compressor 1 capacity step
2 = compressor 2
3 = ON/OFF ventilation
4 = reversing valve
5 = anti-freezer heaters / integration heater n.1
6 = solenoid valve on water circuit
7 = solenoid valve on water circuit only for heat pump
8= anti-freezer heaters / integration heater n. 2
9 = evaporator water pump / supply fan (air / air unit)
10= condenser water pump
0
10
CF42 Switching time of reversing valve when the compressor is switched off 0 250
CF43 Default viewing of lower display of the controller
0 = PB1 visualization
1 = PB2 visualization
2 = PB3 visualization
3 = PB4 visualization
4 = Real working set point (set point modified from Energy Saving, Dynamic set point, function for units
without water storage tank)
5 = Unit status
6 = Clock
7 = No visualization
8 = Woking differential
9 = Unit set point (parameter value)
0
8
CF44 Default viewing of upper display of the remote keyboard
0 = PB1 visualization
1 = PB2 visualization
2 = no visualization (display off)
3 = PB4 visualization
4 = Real working set point (set point modified from Energy Saving, Dynamic set point, function for units
without water storage tank)
5 = Unit status
6 = No visualization (display off)
7 = No visualization (display off)
8 = Woking differential
9 = Unit set point (parameter value)
0
8
CF45 Default viewing of lower display of the remote keyboard
0 = PB1 visualization
1 = PB2 visualization
2 = PB3 visualization
3 = PB4 visualization
4 = Real working set point (set point modified from Energy Saving, Dynamic set point, function for units
without water storage tank)
5 = Unit status
6 = Clock
7 = No visualization
8 = Woking differential
9 = Unit set point (parameter value)
0
8
CF46 Controller: visualization in Std-by mode
0 = default visualization (CF36 and CF43 parameters)
1 = the display visualizes “OFF”
2 = the display visualizes “StbY”
0
2

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 14 di 20
CF47 Remote keyboard: visualization in Std-by mode
0 = default visualization (CF36 and CF43 parameters)
1 = the display visualizes “OFF”
2 = the display visualizes “StbY”
0
2
CF48
A
nalog output configuration
0 = 4..20mA
1 = 0..10V
0 1
Pr2 Password value 0 999
Dynamic Setpoint
Paramete
r
Description Min Max Meas Resolution
Sd01 Dynamic Setpoint
0= Not enabled
1= Enabled
0
1
Sd02 Maximum summer dynamic Offset - 30.0
-54 30.0 54 °C °F Decimal
integer
Sd03 Maximum winter dynamic Offset - 30.0
-54 30.0 54 °C °F Decimal
integer
Sd04 External air d. setpoint during summer -50.0
-58 110 230 °C °F Decimal
integer
Sd05 External air d. setpoint during winter -50.0
-58 110 230 °C °F Decimal
integer
Sd06 External air differential during summer - 30.0
-54 30.0 54 °C °F Decimal
integer
Sd07 External air differential during winter - 30.0
-54 30.0 54 °C °F Decimal
integer
Pr2 Password value 0 999
Energy Saving
Paramete
r
Description Min Max Meas Resolution
ES01 Energy saving starting hour (0÷24) 0 23.50 Min 10 Min
ES02 Energy saving ending hour (0÷24) 0 23.50 Min 10 Min
ES03…ES09 Monday…Sunday
0 = Not enabled
1= Enabled
0 1
ES10 Energy saving setpoint offset in chiller -30.0
-54 30.0 54 °C °F Decimal
integer
ES11 Energy saving differential in chiller 0.1
0 25.0 45 °C °F Decimal integer
ES12 Energy saving setpoint offset in heatpump -30.0
-54 30.0 54 °C °F Decimal
integer
ES13 Energy saving differential in heat pump 0.1
0 25.0 45 °C °F Decimal integer
Pr2 Password value 0 999
Compressor parameters
Paramete
r
Description Min Max Meas. Resolution
CO01 Minimum ON time 0 250 Sec 10Sec
CO02 Minimum OFF time 0 250 Sec 10Sec
CO03 ON delay time between two compressors or Comp. and valve 1 250 Sec
CO04 OFF delay time between two compressors or Comp. and valve 0 250 Sec
CO05 Output time delay after power supply start-up 0 250 Sec 10Sec
CO06 Compressor On delay time after Pump/”Supply fan” activation 1 250 Sec
CO07 Compressor OFF delay time after Pump/”Supply fan” de-activation 0 250 Sec
CO08 Compressor rotating control
0= Enabled
1= Fixed sequence
0
1
CO09 Time delay for solenoid valve of water side 0 250 Sec
CO10 Stage vale polarity
0= Capacity stage ON
1= Capacity stage OFF
0 1
CO11 Water pump / Supply fan operating mode
0= Not used
1= Always on (ON/OFF output)
2= ON if the compressor is on (ON/OFF output)
3= Always on (420mA output)
4= ON if compressor is ON (420mA output)
0
4
CO12 Compressor 1
0 = Enabled
1 = OFF
0 1
CO13 Compressor 2 / Stage valve.
0 = Enabled
1= OFF
0
1
CO14 Hour counter setpoint for 1st compressor 0 999 Hr 10 Hr
CO15 Hour counter setpoint for 2nd compressor 0 999 Hr 10 Hr
CO16 Hour counter setpoint for pump/”Supply fan” 0 999 Hr 10 Hr
Unloading evaporato
r
CO17 Unloading set point (evaporator side) -50.0
-58 110 230 °C °F Dec
int

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 15 di 20
CO18 Unloading Differential (evaporator side)
0.1
0 25.0 45 °C °F Dec int
CO19 Delay unloading function (evaporator side) 0 250 Sec 10 Sec
CO20 Maximum unloading operation time in case of high evaporator temperature 0 250 Sec 10 Sec
Unloading condense
r
CO21 Unloading pressure set point in chiller mode (condenser side) 0.0
0 50.0 725 Bar Psi Dec int
CO22 Unloading pressure differential in chiller mode (condenser side) 0.0
0 12.0 174 Bar Psi Dec int
CO23 Unloading pressure set point in heat pump mode (condenser side) 0.0
0 50.0 725 Bar Psi Dec int
CO24 Unloading pressure differential in heat pump mode (condenser side) 0.0
0 12.0 174 Bar Psi Dec int
CO25 Maximum unloading operation time in condenser side 0 250 Sec 10 Sec
Water pump condense
r
CO26 Condenser water pump operating mode
0= Not used
1= Continuous opeartion
2= Only for compressor demand
0
2
CO27 Delay between condenser pump shutdown and compressor shutdown 0 250 Sec
CO28 SET hour counter of water condenser pump 0 999 Hr 10 Hr
Compressors in tandem mode
CO29 Maximum continuous operating time of a compressor 0 250 Min
CO30 Compressor start-up delay after activation of the water solenoid valve 0 250 sec 10 Sec
Modulating evaporator water pump
CO31 Peak time of modulating pump at maximum speed required by regulation 0 250 sec
CO32 Minimum speed % of modulating pump in operation with enabled compressor (Chiller) 30 100 %
CO33 Minimum speed % of modulating pump in operation with enabled compressor (Heat Pump) 30 100 %
CO34 Speed % of modulating pump in operation with enabled compressor 30 100 %
CO35 Set point modulating pump in chiller mode (evaporator outlet temperature) -50.0
-58 110 230 °C °F Dec
int
CO36 Temperature control band for the modulating pump in chiller function 0.0
0 25.0 45 °C °F Dec int
CO37 Delay for switching off compressor by heat regulation with water pump < 100 % in chiller function 0 250 sec
CO38 Set point modulating pump in heat pump mode (evaporator outlet temperature) -50.0
-58 110 230 °C °F Dec
int
CO39 Temperature control band for the modulating pump in heat pump function 0.0
0 25.0 45 °C °F Dec int
CO40 Delay for switching off compressor by regulation with water pump < 100 % in HP function 0 250 sec
Pr2 Password 0 999
Condenser Fan control paramete
r
Paramete
r
Description Min Max Meas. Resolution
FA01 Fan output
0= Not enabled
1= Enabled
0 1
FA02 Fan regulation
0= On when compressor On
1= ON / OFF
2= Proportional speed control
0
2
FA03 Fan related to compressor
0= With compressor
1= Independent from compressor
0 1
FA04 Maximum speed time when the fan starting 0 250 Sec
FA05 Phase difference fan 0 20 Micro
Sec 250

s
FA06 Not used
FA07 Cooling pre-ventilation before ON compressor 0 250 Sec
FA08 Minimum fan speed in summer 30 100 %
FA09 Maximum fan speed in summer 30 100 %
FA10 Temperature / pressure setpoint for minimum speed in summer -50.0
-58
0.0
0
110
230
50
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
FA11 Temperature / pressure setpoint for maximum speed in summer -50.0
-58
0.0
0
110
230
50
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 16 di 20
FA12 Proportional band in summer 0.0
0
0.0
0
25.0
45
50.0
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
Integer
FA13 CUT-OFF differential in summer 0.0
0
0.0
0
25.0
45
50.0
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
FA14 Override CUT-OFF in summer 0.0
0
0.0
0
25.0
45
50.0
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
FA15 Delay time for CUT-OFF 0 250 Sec
FA16 Fan speed in summer night function 30 100 %
FA17 Minimum fan speed in winter 30 100 %
FA18 Maximum fan speed in winter 30 100 %
FA19 Temperature / pressure setpoint for minimum speed in winter -50.0
-58
0.0
0
110
230
50
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
FA20 Temperature / pressure setpoint for maximum speed in winter -50.0
-58
0.0
0
110
230
50
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
FA21 Proportional band in winter 0.0
0
0.0
0
25.0
45
50.0
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
FA22 CUT-OFF differential in winter 0.0
0
0.0
0
25.0
45
50.0
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
FA23 Override CUT-OFF in winter 0.0
0
0.0
0
25.0
45
50.0
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
FA24 Fan speed in winter night function 30 100 %
Hot Start Function
Paramete
r
Description Min Max Meas. Resolution
FA25 Hot Start Setpoint -50.0
-58 110 230 °C °F Decimal
integer
FA26 Hot Start differential 0.1
0 25.0 45 °C °F Decimal integer
Pr2 Password 0 999
Anti-freeze / Heater parameters
Paramete
r
Description Min Max Meas. Resolution
Ar01 Minimum value of Anti-Freeze Setpoint -50.0
-58 Ar03 °C
°F Decimal
integer
Ar02 Maximum value of Anti-Freeze Setpoint Ar03 110
230 °C °F Decimal
integer
Ar03
A
nti-freeze Setpoint in chiller mode
A
r01
A
r02 °C/°F Dec/int
Ar04
A
nti-Freeze Differential in chiller mode 0
0 25.0 45 °C °F Decimal integer
Ar05
A
nti-Freeze alarm delay 0 250 Sec
Ar06 Maximum number of Anti-Freeze alarm events in 1 hour 0 16
Ar07
A
nti-Freeze alarm delay after starting in Heat Pump 0 250 Sec
Ar08
A
nti-Freeze Setpoint of the electrical heater in Chiller mode -50.0
-58 110 230 °C °F Decimal
integer
Ar09
A
nti-Freeze Setpoint of the electrical heater in Heat Pump mode -50.0
-58 110 230 °C °F Decimal
integer
Ar10
A
nti-Freeze Setpoint of external electrical heater (water/water units) -50.0
-58 110 230 °C °F Decimal
integer
Ar11
A
nti-Freeze Differential in Chiller 0.1
0 25.0 45 °C °F Decimal integer
Ar12
A
nti-Freeze Differential in Heat Pump 0.1
0 25.0 45 °C °F Decimal integer
Ar13
A
nti-freeze electrical heater regulation
0= enabled during regulation control
1= enabled active during regulation an defrost
0 1

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 17 di 20
Ar14
A
nti-freeze electrical heater regulation in Chiller mode
0= OFF in chiller
1= ON in chiller
0 1
Ar15
A
nti-freeze electrical heater regulation in H.P. mode
0= OFF in Heat Pump
1= ON in Heat Pump
0 1
Ar16
A
nti-freeze control probe in Chiller mode
0= Pb1
1= Pb2
2= PB3 probe control
3= PB4 probe control
0
3
Ar17
A
nti-freeze control probe in Heat Pump mode
0= Pb1
1= Pb2
2= PB3 probe control
3= PB4 probe control
0
3
Ar18 “Water pump”/ “Anti-freeze electrical heater” control with unit in OFF or Stand-by
0= Regulation not enabled
1= Regulation enabled
2= Regulation of water pump/anti-freezer on probe PB4 configured as esternal temperature probe
3= Regulation of water pump / anti-freezer heaters on probe PB4 and separate set points
0
3
Ar19 “Water pump”/ “Anti-freeze electrical heater” control for faulty probe
0= output OFF for faulty probe
1= output ON for faulty probe
0
1
Boiler Function
Paramete
r
Description Min Max Meas. Resolution
Ar20 Boiler function
0= Integration control
1= Heating control
0
1
Ar21 External air Setpoint for Boiler heater activation -50.0
-58 110 230 °C °F Decimal
integer
Ar22 Boiler function differential 0.1
0 25.0 45 °C °F Decimal integer
Ar24
A
ctivation delay time of heater n° 2 0 250 Min
Ar25 Outside air set point for disabling the compressors -50.0
-58 110 230 °C °F Dec
Int
Ar26 Outside air differential for enabling the compressors 0.1
0 25.0 45 °C °F Dec int
Anti-freezer alarm in HP function
Ar27
A
nti-freeze alarm set point in heat pump mode
A
r01
A
r02 °C /°F Dec/int
Ar28
A
nti-freeze alarm differential in heat pump mode 0
0 25.0 45 °C °F Dec int
Evaporator water pump functioning / condenser of ambientprobe
Ar29 Evaporator/condenser water pump set point with external temperature regulation -50.0
-58 110 230 °C °F Dec
int
Ar30 Evaporator/condenser water pump differential with external temperature regulation 0.1
0 25.0 45 °C °F Dec int
Condenser water pump functioning
A
r
31 Regulation of condenser water pump/ anti-freeze heaters in OFF
–
standby mode.
0= de-activated
1= Switched on in OFF or standby mode
2= Regulation of water pump/ anti-freeze heaters with probe PB4 configured as ambientprobe
3= Regulation of the water pump / anti-freeze heaters with probe PB4 configured as ambient probe and
separate set points.
0
3
Ar32
A
ctivation of condenser water pump / anti-freeze heaters in case of probe failure.
0= Off with probe fault
1= On with probe fault
0
1
Pr2 Password 0 999
Defrost Parameters
Paramete
r
Description Min Max Meas. Resolution
DF01 Defrost control
0= No
1= Yes
0
1
DF02 Defrost type
0= Temperature / pressure
1= Time
2= External contact
0
2
DF03 Temperature / pressure Setpoint for starting the defrost cycle -50.0
-58
0.0
0
110
230
50
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
DF04 Temperature / pressure Setpoint for stopping the defrost cycle -50.0
-58
0.0
0
110
230
50
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
DF05 Minimum delay time before starting a forced defrost cycle 0 250 Sec
DF06 Minimum defrost duration 0 250 Sec

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 18 di 20
DF07 Maximum defrost duration 0 250 Min
DF08 Compressor Off time before starting a defrost cycle 0 250 Sec
DF09 Compressor Off time after a defrost cycle 0 250 Sec
DF10 Interval time between defrost cycles 1 99 MIN
DF11 Temperature setpoint to start a combined defrost cycle after the DF10 counting time -50.0
-58 110 230 °C °F Decimal
integer
DF12 Temperature Setpoint to stop a combined defrost -50.0
-58 110 230 °C °F Decimal
integer
DF13 Forced activation of the 2nd compressor in defrost
0= Not enabled
1= Enabled
0 1
DF14 Forced fan activation during defrost and draining times
0= Not enabled
1= Enabled only for defrost
2= Enabled for defrost and draining time (dF09)
0
2
DF15 Temperature/Pressure Setpoint to start a forced condensing fan control in defrost cycle -50.0
-58
0.0
0
110
230
50
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
DF16 Low alarm control during defrost
0= Not enabled
1= Enabled
0
1
DF17 Low alarm delay time after changing the status of the 4-ways valve 0 250 Sec
DF18 4-ways reversing valve
0= ON in cooling
1= ON in heating
0 1
DF19 Temperature/pressure Setpoint to start a forced defrost cycle -50.0
-58
0.0
0
110
230
50
725
°C
°F
bar
psi
Decimal
integer
Decimal
integer
DF20 Forced defrost cycle differential 0.0
0
0.0
0
25.0
45
50.0
725
°C
°F
Decimal
Integer
Decimal
Integer
DF21 Fan status during defrost 0 1
Pr2 Password 0 999
Alarm Parameter
Paramete
r
Description Min Max Meas. Resolution
AL01 Low pressure alarm delay time 0 250 Sec
AL02 Maximum low pressure alarm events in 1 hour 0 16
AL03 Low pressure alarm with off compressor
0= Not enabled when compressor Off
1= Enabled when compressor Off
0 1
AL04 “Water flow/Supply fan thermal protection” alarm delay after “water pump / supply air fan” starting. 0 250 Sec
AL05 Maximum duration of the flow switch alarm before it becomes manual and blocks the water pump 0 250 Sec
AL06 “Water flow/Supply fan thermal protection” input activation duration 0 250 Sec
AL07 “Water flow/Supply fan thermal protection” input de-activation duration 0 250 Sec
AL08 Thermal protection alarm delay after starting the compressor 0 250 Sec
AL09 Number of maximum thermal protection alarm events. 0 16
AL10 Maximum number of high temperature / condenser pressure alarm interventions per hour 0 16
AL11 Condensing temperature/pressure high alarm setpointfor input probe
-50.0
-58
0.0
0
110
230
50
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
AL12 Temperature/pressure high alarm differential for input probe 0
0
0
0
25.0
45
50.0
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
AL13 Low pressure alarm delay for input probe 0 250 Sec
AL14 Low pressure alarm Setpoint for input probe -50.0
-58
0.0
0
110
230
50
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
AL15 Low pressure differential for input probe 0
0
0
0
25.0
45
50.0
725
°C
°F
Bar
Psi
Decimal
integer
Decimal
integer
AL16 Maximum number of the low alarm events in 1 hour for input probe 0 16
AL17
A
larm relay and buzzer activation when the unit is Off or stand-by
0= Alarm relay and buzzer enabled
1= Alarm relay and buzzer disabled
0
1
AL18
A
larm relay output/open collector polarity
0= Output without voltage in normal conditions,with voltage when there is an alarm
1= Output with voltage in normal conditions, without voltage when there is an alarm
0 1

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Manual IC100CX GB Page 19 di 20
AL19
A
llows to choose the probe for the anti- freezer heater alarm.
0= Relative to Ar16 parameters in chiller mode - Ar17 in hp.
1= on Pb1 probe
2= on Pb2 probe
3= on Pb3 probe
4= on Pb4 probe
0
4
AL20 Maximum number of general unit block alarm interventions per hour 0 16
AL21 General alarm delay starting from digital input activation 0 250 Sec
AL22 Delay to reset the general alarm starting from digital input de-activation 0 250 10 sec 10 sec
AL23 General alarm type:
0 = signaling only does not depend on AL20 (alarm relay and buzzer enabled), always reset automatically
1= the alarm blocks the unit; resetting of the alarm depends on the value of the AL20 parameter
0 1
AL24 System’s inlet water high temperature alarm set point -50.0
-58 110 230 °C °F Dec
int
AL25 System’s inlet water high temperature alarm differential
0.1 0 25.0 45 °C °F Dec int
AL26 Delay time for signaling the system’s inlet water high temperature alarm 0 250 10 sec 10 sec
AL27 Maximum number of system inlet high temperature alarm interventions per hour
0
16
AL28 Condenser water flow alarm delay time 0 250 Sec
AL29 Maximum duration of the flow switch alarm before it becomes manual and blocks the water pump 0 250 Sec
AL30 Minimum activation time for water flow alarm 0 250 Sec
AL31 Minimum time with inactive water flow input (after alarm event). 0 250 Sec
AL32 Condenser flow switch alarm configuration
0= not used
1= activated only in chiller mode
2= activated only in h.p. mode
3= activated in chiller and h.p. mode
0
3
Pr2 Password 0 999
1. CONNECTING DIAGRAM
1.1 Model with 5 internal relays and 1 modulating output (0..10V or 4..20mA)
MF ID1, MF ID2, MF ID5 = multifunction digital inputs
ID3 = high pressure digital input
ID4 = low pressure digital input
RL1 = compressor relay
MF RL2, MF RL3, MF RL4, MF RL5 = multifunction relays
MF o.c. out = multifunction open collector output (for external relay)
Pb1, Pb2, Pb3, Pb4 = NTC probe or digital input
Tk = output for external fan speed controller
Analog output = output 0..10V / 4..20mA for external fan speed module (for condenser fan or modulating evaporator
water pump)
1.2 Model with triac on board and ratiometric pressure trasducer (Pb3)
MF ID1, MF ID2, MF ID5 = multifunction digital inputs

IC100CX SERVICE MANUAL
Manual IC100CX GB Page 20 di 20
ID3 = high pressure digital input
ID4 = low pressure digital input
RL1 = compressor relay
MF RL2, MF RL3, MF RL4 = multifunction relays
RL5 = output for multifunction external relay
Triac out fan = output for condenser fan
Pb1, Pb2, Pb4 = NTC probe or digital input
Pb3 = ratiometric pressure trasducer
MF o.c. out = multifunction open collector output (for external relay)
1.3 Model with 5 internal relays and pressure trasducer (Pb3)
MF ID1, MF ID2, MF ID5 = multifunction digital inputs
ID3 = high pressure digital input
ID4 = low pressure digital input
MF RL2, MF RL3, MF RL4, MF RL5 = multifunction relays
Pb1, Pb2, Pb4 = NTC probe or digital input
Pb3 = pressure trasducer
Tk = output for external fan speed controller
MF o.c. out = multifunction open collector output (for external relay)
1.4 Model with 5 internal relays and ratiometric pressure trasducer (Pb3)
MF ID1, MF ID2, MF ID5 = multifunction digital inputs
ID3 = high pressure digital input
ID4 = low pressure digital input
MF RL2, MF RL3, MF RL4, MF RL5 = multifunction relays
Pb1, Pb2, Pb4 = NTC probe or digital input
Pb3 = ratiometric pressure trasducer
Tk = output for external fan speed controller
MF o.c. out = multifunction open collector output (for external relay)
Hidros S.p.A.
Sede legale: Via della Croce Rossa; 32/2 – Cap 35129 Padova Italy.
Sede operativa: Via dell'Industria, 5 - cap 35020 - Brugine (Pd) Italy
Tel. [phone] - Fax [phone]
Web: www.hidros.it – E-mail: [email protected]