AERMEC EXTK PRO User manual

0412-6180864 Rev.00
SPL
SWIMMING POOL LINE –Manual adjustment for Eliwell Control - User Manual

SPL User Manual Page 3 of 24 0412-6180864-rev.00
1 INDEX
•Index pag. 3
•Purpose pag. 4
•Using the device pag. 4
•Responsibility and residual risks pag. 4
•RAEE Directive pag. 4
•Diagram of parameter masks pag. 5
•User Interface pag. 6
•Switching On- Switching Off pag. 8
•SET-POINT Modifications pag.10
•Time slots pag.12
•Alarm Diagnostics pag.15
1
2
3
4
5
6
7
8
9
10
11

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SPL user manual Page 4 of 24 0412-6180459 –rev.00
2 PURPOSE
- The purpose of this manual is to provide all the basic information needed to run a SPL UNIT equipped
with EXTK PRO keyboard (see Fig. 1 page 6).
- The recipients of this manual include those involved in the basic operation of the UNIT.
3 USE OF THE DEVICE
Permitted use
This product is used for the control of the SPL unit. For safety reasons, the control device must be installed
and used according to the instructions provided and in particular, under normal conditions, live parts must not
be accessible.
The device must be protected from water and dust according to the application, and should only be accessible
with the use of tools.
Unintended use
Any use other than that expressly permitted is prohibited. Please note that the relay contacts supplied are
functional and are subject to failure, (since they are managed by an electronic component they can short or
remain open). Any protection devices required by product standards or dictated by common sense for obvious
safety reasons should therefore be made outside of the instrument.
4 RESPONSABILITIES AND RESIDUAL RISKS
Aermec SpA are not liable for any damages arising from:
• installation/use other than that prescribed and, in particular, that does not comply with safety requirements
laid down by regulations and/or specified in the present;
• use on equipment that do not provide adequate protection against electric shock, water and dust following
the assembly;
• use of devices that allow access to hazardous parts without the use of tools;
• installation/use on equipment not conforming to regulations and provisions in force.
5 WEEE DIRECTIVE (FOR EU ONLY)
WEEE Directive (for EU only)
All materials must be recovered or disposed of in accordance with national regulations.
• The WEEE Directive requires that the disposal and recycling of electrical and electronic
equipment must be managed through a special collection, in appropriate centres, separate
from the one adopted for the disposal of mixed municipal waste.
• The user is obliged not to dispose of equipment at the end of its useful life as municipal
waste, but to dispose of it in a special collection centres.
• The units covered by the WEEE Directive are marked with the above symbol.
• Potential effects on the environment and human health are presented in this manual.
• Additional information may be obtained from the manufacturer.

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6 DIAGRAM OF THE PARAMETER MASKS

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SPL user manual Page 6 of 24 0412-6180459 –rev.00
7 USER INTERFACE
The Figure 1 illustrates the keyboard for the user interface which allows to perform all operations
concerning the use of the controller and in particular:
The keyboard, with degree of protection IP65, consists of:
- a graphic 4-line LCD display .
When any one of the keys is pressed, the monitor lights up for 10 seconds. In normal view (main view with
default menu) the "menu" is displayed and allows:
to enter the password
to access the configuration mode
to view the inputs and outputs of the XTMH basic card (the card that translates commands
from the control card in machine language)
- 3 leds that indicate:
Green Led 1 (first from the top).
Indicates the presence of the supply voltage.
Lights if the unit is electrically powered (main switch in the ON position) even when off or in stand-
by; it will be off if the device is not powered (main switch set to OFF).
Yellow Led 2 (second from the top).
Indicates that there is communication between the keyboard and the controller.
Lights if there is communication and off if the communication is interrupted or absent.
The absence of communication has a delay time of 10 seconds, after which the yellow LED flashes
and the display will show “Energy XT PRO”.
To restore communication, the yellow LED lights and the lack of communication status previously
displayed appears again on the screen.
Red Led 3 (third from the top).
Indicates that an alarm is present.
Lights if there is at least one alarm active;
Off if there are no alarms active;
Flashing if there are alarms active that can be turned off manually.
Figure 1: Keyboard on the machine (standard) and/or
remote keyboard (accessory)
turn the unit on and/or off;
set the unit's operating mode;
set the time slots;
manage alarm situations;
set the parameters

SPL User Manual Page 7 of 24 0412-6180864-rev.00
Function keys: F1, F2, F3, F4 and Push: ON/OFF
These buttons provide access via shortcuts to specific commands that are
present in the general menu. These keys give direct access to some commands
without following the canonical path foreseen by the menu.
The unit is turned on or off by pressing the centre button for a few seconds (PUSH: ON / OFF).
Act on the four external positions (F1: above; F3: below; F2: right; F4: left):
• a single press: accesses the Menu menu
• pressing for a few seconds:
Menu keys: Arrow up, down, right, left and central Enter/Push key.
With a single press of the keys:
As well as the main panel there may also be a remote panel (additional) which repeats all of its functions; to
connect the remote panel follow the instructions on the wiring diagram of the unit. The indications for fixing the
remote panel to a suitable support are included in the packaging of the accessory itself. The accessory
normally comes packed and positioned inside the electrical panel of the unit.
- F1: displaying the temperatures detected and the SETs set;
- F2: displaying the component's operation conditions (e.g.
whether it is operating a Comfort or Economy cycle);
- F3: access to the alarms menu;
- F4: access to the time slot menu.
top arrow: scrolls the items in the menu upwards;
bottom arrow: scrolls the items in the menu downwards;
left arrow (ESC): returns to the previous menu (each press
returns by one level)
right arrow: accesses to possible changes and/or confirms the
set value
central Push key: confirms the command or accesses the
indicated menu.
TEMPERATURE 01/03
Room 26.7°C
Limit 37.5°C
Outside 0.5°C
STATUS 01/05
System Comfort
Mode Cycle3s
ALARMS 01/02
Bios Alarms
User Alarms
Probe errors
TIME SLOTS 01/01
Timer No
Timer type Weekly
Settings
ON / OFF
UP
DOWN
RI
GH
T
ENTER/PUSH
ESC

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SPL user manual Page 8 of 24 0412-6180459 –rev.00
8 SWITCHING ON AND OF
The unit is turned on or off by pressing the centre button for a few seconds (PUSH: ON / OFF).
The unit can be turned on or off by pressing the Push: ON/OFF key (centre button of the
Function keys) on the machine control panel or remote control panel (accessory) for a
few seconds.
In the event of power failure during the operation of the machine, when the power returns, the unit starts to
operate again in the same manner prior to the power supply failure.
When the unit turns off the "shut down" procedure starts and stops the machine. "OFF" is displayed only after
all components have been switched off.
In the event of power failure during the shut down procedure of the machine, when the power returns the
machine restarts Off (standby).
If the unit has already been activated with the Push:ON/OFF key, it
can be subsequently turned off and on again
- from the dedicated remote digital input
(refer to the wiring diagram for indication of
the remote ON/OFF contact). This contact
can only turn the unit off: the unit cannot be
turned on again by the Push: ON/OFF if the
contact is closed
-by the time slot, if enabled.
- to use the remote contact for the first time, turn the unit on with the Push: ON/OFF key;
- the switch on/shut down of the unit via the remote contact is priority both on the start-up/shut down by
the Push: ON/OFF key as well as on the time slot;
- if the Push: ON/OFF key has to be used, the remote contact must be ON and/or the time slot disabled.
PUSH: ON/OFF

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The initial default mask (on two pages/screens).
A mask appears on two pages when the controller is turned on
Each screen can display 4 lines at a time.
The second screen or the subsequent screens can be displayed by
pressing the arrow keys at the bottom of the Menu keys group.
NOTE: The following screens can be displayed also by
- pressing repeatedly the ESC key on the left of the Menu Keys Group.
Hh:mm NRGXTPRO 01/02
Off
Room Temp. 26.7°C
Room Hum. 25.5 %
Hh:mm NRGXTPRO 02/02
Setpoint
Time slots
Menu

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SPL user manual Page 10 of 24 0412-6180459 –rev.00
9 MODIFYING THE SET-POINT
Before going into detail on the operational procedures necessary to carry out the variation of a SET-POINT
parameter, the potential variables present in the menu must be clearly explained.
2 programs are discussed on page 1/3 with which it is possible to set the water temperature in the tank in
“Comfort” mode and in “Economy” mode
All temperatures are detected in the recovery part of the machine.
Two parameters which related to the temperature of the internal air are discussed on page 2/3:
Page 3/3 provides information on the Post Vent., a piece of data which relates exclusively to the delivery part
of the unit, this data cannot be manipulated and is always equal to the
temperature of the water in the "Comfort” mode tank
SET-POINT 03/03
Post Vent. 25.0°C
The "Comfort" menu provides the option to vary the temperature of
water in the tank, in accordance with the needs of the customer
(sports, recreational, therapeutic etc.)
The "Economy" menu is used when no activities are scheduled for the
pool (e.g. at night), and it maintains the water temperature at a level a
few degrees below the one set for the “Comfort” mode.
SET-POINT 01/03
Pool
Comfort: 29.0°C
Economy: 27.0°C
Offset in which the ∆t (temperature difference) between the water in
the tank and the air is indicated; to be indicated at the customer's
discretion in accordance with the intended use.
Humidity in which the percentage of humidity required within the pool
premises is entered.
SET-POINT 02/03
Ambient
Offset: 0.0°C
Humidity:
50 %
SET-POINT 01/03
Ambient
Comfort: 29.0°C
Economy: 27.0°C
SET-POINT 02/03
Ambient
Offset: 0.0°C
Humidity 50 %

SPL User Manual Page 11 of 24 0412-6180864-rev.00
The temperature settings can be modified as required from the second
page of the initial default mask.
Position the cursor on the text "Set Point" using the UP-DOWN keys:
press the ENTER/PUSH button
1 DOWN arrow to select the value to be
modified (Comfort - Economy);
2 Right arrow to select the value;
3 ENTER/PUSH to modify it (the value
flashes);
4 UP arrow or DOWN arrow to modify it;
5 ENTER/PUSH to confirm. Left
arrow/ESC to end the editing of the
value selected.
6 Left arrow/ESC to return to the initial
screen.
- Modify the economy SET POINTS by repeating steps 1 to 6.
- To return to the default mask, press the "Left arrow" key several
times.
SET-POINT 01/03
Pool
Comfort: 29.0°C
Economy: 27.0°C
SET-POINT 01/03
Pool
Comfort: 29.0°C
Economy: 27.0°C
Hh:mm NRGXTPRO 02/02
Set Point
Time slots
Menu
Hh:mm NRGXTPRO 02/02
Set Point
Time slots
Menu
UP
DOWN
RIGH
T
ENTER/PUSH
ESC

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SPL user manual Page 12 of 24 0412-6180459 –rev.00
10 TIME SLOTS
Up to 4 different interventions called "slots" can be set for each day of the week. They can be activated
individually and within them all the information necessary to operate the unit in
automatic mode can be entered.
The management of the time slots can be
accessed from the main menu; scroll on the
main menu with the DOWN key as far as the
heading TIME SLOTS appears.
After confirming the selection with the centre key of the MENU, the
Timer, Timer type and Settings modes appear on screen.
This menu can be accessed directly by pressing and holding the F4
key.
The TIMER menu is only accessed to set or not the application:
TIMER, ENTER, right key to make the YES/NO flash, UP - DOWN key
to perform the desired variation, confirm with ENTER and exit a level
with ESC + ESC.
The TIMER TYPE can be selected from the TIMER menu by means
of the UP–DOWN keys;
the following types are available:
1 - 7/7:
in which the data can be
entered subdivided in each
day of the week in order to
meet all user needs;
2 -Weekly:
in which is set a standard
value repeated for each day
of the week;
3 -5+2:
in which the week is
essentially managed with
working slots and festive
slots.
Hh:mm NRGXTPRO 02/02
Time slots
Summer / Winter / Auto
Menu
TIME SLOTS 01/01
Timer Yes
Timer type
Weekly
Settings
TIMER 01/01
TIME SLOTS
No
TIME SLOTS 01/01
Timer No
Timer type
Weekly
Settings
TIMER TYPE 01/01
TIME SLOTS
TYPE
7/7
TIMER TYPE 01/01
TIME SLOTS
TYPE
Weekly
TIMER TYPE 01/01
TIME SLOTS
TYPE
5+2
ESC
DOW
N
Enter
RIGH
T
UP

SPL User Manual Page 13 of 24 0412-6180864-rev.00
Depending on the choice made (7/7, Weekly, 5+2) the SETTINGS menu,
of the TIME SLOTS menu, will give you the possibility to set options
according to your personal needs: by the way, in any case 4 slots are
managed for each type of timer, in which it is possible, for each of them, to
change the condition of the unit.
e.g.: Slot 1- switch on at 5.00 in the morning in economy mode;
Slot 2- mode variation from economy to comfort at 08.00 in the morning;
Slot 3 - mode variation from comfort to economy at 22.00 at night;
Slot 4- off at 24.00 at night.
or
Slot 1- mode variation from economy to comfort at 08.00 in the morning;
Slot 2 - mode variation from comfort to economy at 22.00 at night;
Slot 3- not in use;
Slot 4- not in use.
(in this case the unit is not switched off; rather it remains on 24/24h).
Etc.
- Timer type 7/7:
- scroll the Time Slots menu with the UP-DOWN keys till you find
SETTINGS, then press ENTER;
- all the days of the week that can be selected via the UP-DOWN keys
appear
; select the desired day by pressing ENTER (e.g.: Monday);
- SLOT1 appears on the screen with the TIME setting, press ENTER
(the time flashes);
- press the UP-DOWN key to select the hours, press ENTER to confirm
(the hours continue to flash), press ESC to exit by one level;
- press the DOWN key, press the ENTER key to select the MINUTES;
- press the UP-DOWN key to select the minutes, press ENTER to
confirm (the minutes continue to flash), press ESC to exit by one level;
- press DOWN and then ENTER to select the MODE that can be: ON or
OFF
TIME SLOTS 01/01
Timer No
Timer type
Weekly
Settings
TIME SLOTS 01/01
Timer No
Timer type Weekly
Settings
SETTINGS 01/03
Monday
Tuesday
Wednesday
MONDAY 01/19
SLOT 1
TIME
8 h
MONDAY 02/19
SLOT 1
MINUTES
0m
MONDAY 03/19
SLOT 1
MODE
Off
ESC
DOWN
Enter
RIGHT
UP

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Once the MODE in which the machine must operate in slot 1 has been
determined, press the ESC button once to return to the previous menu
It is possible, from the SET menu, to choose whether to perform a
Comfort cycle (usually during the day) or an Economy cycle (usually at
night).
Timer Type WEEK: for this type of selection, the software manages each day of the week in the
same way; The settings are defined step-by-step in the previous paragraph 7/7; there are four time
slots for this module also.
Timer Type 5+2: for this type of selection, the software manages the week into two sections, the work
section from Monday to Friday and the festive section, from Saturday to Sunday, managing them
individually; there are four time slots for this module also. To enter the time slots, use the same method
proposed for the 7/7
MONDAY 04/19
SLOT 1
Set
Comfort
MONDAY 04/19
SLOT 1
Set
Economy
ESC
DOWN
Enter
RIGH
T
UP

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SPL user manual Page 15 of 24 0412-6180459 –rev.00
11 ALARM DIAGNOSTIC
Generally, all types of alarms and probe errors, where enabled, are managed when the machine is on or when
the machine is shutting down. When the status of the system changes from shutting down to off, when exiting
the configuration mode or start-up, the alarms and probe errors are reset.
An exception to the previous management:
NB: The alarm management is disabled in configuration mode.
Signal in the event of an alarm and error with Red LED
The presence of alarms and/or probe errors is signalled by the red LED on the keyboard and, if provided, from
the menu. The LED lights in the presence of at least one active alarm, flashing if there are only alarms that
have returned for some reason (not active) and can therefore be reset, off in the other cases. The LED status
is not restricted to the status of the unit (it also works with the unit off). The following paragraphs list the types
of alarms that can be found: for the resolution of all alarms (the presence of which is shown by the red
LED with fixed light) please contact the AERMEC service department.
Cumulative alarm relay
The presence of active alarms with manual reset, probe errors or anti-freeze alarm are signalled by the
cumulative alarm relay inside the electrical panel of the unit. The relay also functions with the system off (of
course for those alarms that are active when the system is off).
11.1 Thermoregulation alarms
- the BIOS alarms that are also managed even when the unit is off (if the system is off, the cumulative
alarm relay does not trip even if the BIOS is active. The red LED of the keyboard lights and “!Hw” appears
on the keyboard)
11.1.1 High temperature alarm
In the event the value of the temperature measured by the control probe is maintained at the higher level
set and the unit is set to produce cool/cold air, the high-temperature alarm is generated; it is a display only
alarm and manual reset.
11.1.2 Low temperature alarm
In the event the value of the temperature measured by the intake probe stays at the lower level than that
set and the unit is set to produce hot air, the low temperature alarm is generated; it is a display only alarm
and manual reset.

SPL User Manual Page 16 of 24 0412-6180864-rev.00
11.2 Alarm reset/anomalies
When a condition of alarm/anomaly persists, this condition is indicated
on the main display screen together with the words
"!Anom" and the lighting of the red led , flashing or fixed.
To know the cause that generated the alarm, simply press and hold the
F3 key (shortcut) of the FUNCTION key;
screen (1/2) shows a first part with the Bios Alarms, User Alarms and
Probe Errors and a second part (2/2) proposes the Alarms reset option,
an alarm log and the cancel option of the alarms log.
The High and Low temperature alarms are reset:
- Manually if resettable
- When the system is turned on or off;
- When exiting the configuration mode ;
- Press ENTER/PUSH from the MENU to select the “Bios Alarms”; the
display may show “EMPTY” meaning that the alarm signalled is not in
the Bios or it may show the wording of the type of alarm detected.
Press the ESC key and try to see, moving with the UP - DOWN keys, if
an alarm in the User alarms is detected. The same procedure can be
used to check the Probe Errors.
- Having established what type of error has been detected, with the UP
- DOWN keys, select Reset Alarms and press ENTER/PUSH of the
MENU: "OK" is displayed for a fraction of a second and, resetting the
alarm, the alarms screen appears again.
By pressing the ESC key of the MENU, the system returns to the main
screen; the word “!Anom.” disappears and the red LED switches off.
Hh:mm NRGXTPRO 01/02
Comfort ! Anom.
Room Temp. 27.1°C
Room Hum. 26.3 %
ALARMS 01/02
Bios Alarms
User Alarms
Probe errors
EMPTY
ALARMS 02/02
Alarms Reset
Log
Cancel Log
Hh:mm NRGXTPRO 01/02
Comfort
Room Temp. 27.8°C
Set Point 26.3 %
ALARMS 02/02
Alarms Reset
Log
Cancel Log

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*TIMEOUT INT. EXP.
*CRC EEPROM BIOS ERROR
*CRC EEPROM USER ERROR
*REAL TIME CLOCK NEED TO BE SET
*REAL TIME CLOCK COMM. ERROR
*REAL TIME CLOCK REGISTERS
Internal Expansion Bios (!HW)
Suction Filters
EEprom
Recovery Unit Differential
RTC (clock)
Compressor/Unit Times
System High Pressure
Recovery Temperature Probe
(Error)
System Low Temperature
Delivery Probe (Error)
Low Delivery Temperature
Differential Pressure Probe
(Error)
Anti-freeze (water coil)
Differential Pressure Probe
(Error)
Recovery Unit Anti-freeze
Anti-freeze Temperature
Probe (Error)
High Digital Pressure
Recovery Unit Anti-freeze
Temperature Probe (Error)
High Probe Pressure
Recovery Unit Anti-freeze
Temperature Probe (Error)
Low pressure
High Pressure Probe (Error)
Thermal Switch Compressor 1
Low Pressure Probe (Error)
Thermal Switch Compressor 2
Room Humidity Probe (Error)
Thermal Switch Compressor 1
and 2
External Humidity Probe
(Error)
Delivery fan
External Temperature Probe
(Error)
Recovery fan
Anti-freeze Output
Temperature Probe (Error)
Phase Sequence
High recovery humidity
Recovery Filters
11.2.1 BIOS alarms status list
11.2.2 USER alarms status list

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*INTAKE TEMP. ^
*DELIVERY TEMP. ^
*EXTERNAL TEMP. - DYNAMIC SET
*ANTI-FREEZE
*DIFF. PRESS. DEL. FAN
*HUMIDITY LIMIT ^
*EXTERNAL HUMIDITY ^
*AMBIENT HUMIDITY ^
*AIR QUALITY ^
*HIGH PRESSURE, CIRCUIT 1
*HIGH PRESSURE, CIRCUIT 2
*LOW PRESSURE CIRCUIT 1
*LOW PRESSURE CIRCUIT 2
*COND. TEMP. CIRCUIT 1 **
*COND. TEMP. CIRCUIT 2 **
Error description
Action
Troubleshooting
Reset type
TIMEOUT INT. EXP.
Replacement performed by AERMEC service
dept.
CRC EEPROM BIOS
ERROR
The default of the parameters are
automatically reset
Evaluate to restore parameters or replacement
by the AERMEC service Dept.
CRC EEPROM USER
ERROR
The default of the parameters are
automatically reset
Evaluate to restore parameters or replacement
by the AERMEC service Dept.
REAL TIME CLOCK NEED
TO BE SET
Set date/time, if not resolved replace by the
AERMEC service Dept.
REAL TIME CLOCK
COMM. ERROR
Set date/time, if not resolved replace by the
AERMEC service Dept.
REAL TIME CLOCK
REGISTERS
Set date/time, if not resolved replace by the
AERMEC service Dept.
11.2.3 Probe error alarms status list
11.3.1 Description and resolution of BIOS alarms

SPL User Manual Page 19 of 24 0412-6180864-rev.00
Error description
Action
Problem description
Troubleshooting
Reset type
LOW ROOM
TEMPERATURE
Display only
the system failed to modify the room
temperature after a set time
Check if any other
alarms are present or
contact the service
centre
Manual
HIGH ROOM
TEMPERATURE
Display only
the system failed to modify the room
temperature after a set time
Check if any other
alarms are present or
contact the service
centre
Manual
ANTI-FREEZE
Blocks the cold
refrigerant circuit and
starts the utilities
Possible freezing of water coil
Contact the Service
centre
Delimited
on the
event
CIRCUIT # PROBE HIGH
PRESSURE
Blocks the refrigerant
circuit
Contact the Service
centre
Manual
HIGH PRESS. DIGITAL
CIRCUIT #
Blocks the refrigerant
circuit
Contact the Service
centre
Manual
CIRCUIT # LOW
PRESSURE
Blocks the refrigerant
circuit after a set
number
activations/hour
Circuit empty or low external
temperatures
Contact the Service
centre
Delimited
on the
event
FANS # ** THERMAL
SWITCH
Blocks the circuits
Contact the Service
centre
Manual
COMPRESSOR #
THERMAL
Blocks the
compressors
Contact the Service
centre
Manual
DEL. FAN THERMAL
SWITCH
System block
Delivery/intake fans thermal switch
activation
Contact the Service
centre
Manual
FILTERS BLOCKED
Display only
Functioning hours of the filters
exceeded
Reset alarm and check
filters
Manual
FILTERS DIRTY
Display only
Filters dirty
Clean/replace
Manual
AIR FLOW
System block
Contact the Service
centre
Manual
HEATERS THERMAL
SWITCH
Operation block of the
heaters and
modulating generator
Heaters and modulating generator
thermal switch activation
Contact the Service
centre
Manual
HEAT. # THERMAL
SWITCH
Blocks heaters
operation
Thermal switch tripped (input not in
common with Gen. Mod. thermal
switch)
Contact the Service
centre
Manual
DUAL STAGE GEN.
THERMAL SWITCH
Dual stage generator
operation blocked
Dual stage generator thermal switch
tripped
Contact the Service
centre
Manual
SMOKE
System block
Fire alarm
Contact the Service
centre
Manual
PHASE SEQUENCE
System block
Phase sequence alarm
Incorrect Phase
Sequence, Failure of a
phase, Low voltage [V]
Manual
MOD. GEN. THERMAL
SWITCH
Modulating generator
operation blocked
Thermal switch tripped (input not in
common with heater thermal switch)
Contact the Service
centre
Manual
SYSTEM HOURS OF USE
Display only
System operation time threshold
exceeded alarm
Contact the Service
centre
Manual
MOD.GEN. HOURS OF
USE
Display only
Modulating generator operation time
threshold exceeded alarm
Contact the Service
centre
Manual
ELE. COIL HOURS OF
USE
Display only
Electric coil operation time threshold
exceeded alarm
Contact the Service
centre
Manual
COMPRESS. # HOURS OF
USE
Display only
Compressors operation time
threshold exceeded alarm
Contact the Service
centre
Manual
11.3.2 Description and resolution of USER alarms and Probe Errors

SPL User Manual Page 20 of 24 0412-6180864-rev.00
Error description
Action
Problem description
Troubleshooting
Reset
type
INTAKE TEMP.
System block
Room air temperature probe error
(ambient air intake)
Check wiring or replace
component
Automatic
DELIVERY TEMP.
Disable delivery limit
function
Delivery temperature probe error
Check wiring or replace
component
Automatic
EXTERNAL TEMP.
Disable economizer
(freecooling,
freeheating)
External temperature probe error
Check wiring or replace
component
Automatic
ANTI-FREEZE
Disables anti-freeze
function
Water coil anti-freeze temperature
probe error
Check wiring or replace
component
Automatic
DIFF. PRESS. DEL. FAN
System block
>Delivery fan differential pressure
switch probe error
Check wiring or replace
component
Automatic
HUMIDITY LIMIT
Disables humidifier
delivery limit
Delivery humidity probe error
Check wiring or replace
component
Automatic
EXTERNAL HUMIDITY
Disables enthalpy
economizer
(freecooling,
freeheating)
External humidity probe error
Check wiring or replace
component
Automatic
AMBIENT HUMIDITY
Disables enthalpy
economizer
(freecooling,
freeheating)
Dehumidification,
humidification
Ambient humidity probe error
(ambient air intake)
Check wiring or replace
component
Automatic
AIR QUALITY
Disables air quality
function
Air quality probe error
Check wiring or replace
component
Automatic
CIRCUIT # HIGH
PRESSURE
Circuit block
Circuit maximum probe error (high
pressure transducer)
Check wiring or replace
component
Automatic
CIRCUIT # LOW
PRESSURE
Circuit block
Circuit minimum probe error (low
pressure transducer)
Check wiring or replace
component
Automatic
N.B.: “#” indicates the number of the circuit, the compressor, the thermal switch, etc..