USER MANUAL
DC & DM displays
BALTIC
FLEXAIR
ENERGY
AIRCOOLAIR
COMPACTAIR
FLATAIR
AQUALEAN
DC-DM-IOM-1801-E
www.lennoxemea.com
Summaries
1 Display ‘DC’
1.1 Introduction ................................................................................................................................. 2
1.2 Temperature measurement ........................................................................................................ 2
1.3 Quick Action ................................................................................................................................. 3
1.4 Presentation ................................................................................................................................ 6
1.5 Use ............................................................................................................................................... 7
1.6 DC set in ‘Light’ mode .................................................................................................................. 8
1.7 DC set in ‘Full’ mode .................................................................................................................... 9
1.8 Setting Value ............................................................................................................................ 11
1.9 Activation level 2 ....................................................................................................................... 11
2 Display ‘DM’
2.1 Quick Action ............................................................................................................................... 12
2.2 Functionality of the DM ............................................................................................................. 14
2.3 Organizational screens ............................................................................................................... 21
3 DC, Installation
3.1 Connection ................................................................................................................................. 23
3.2 Ferrites Protection of Displays ................................................................................................... 25
3.3 Temperature Sensor .................................................................................................................. 25
3.4 Configuration ............................................................................................................................. 25
3.5 Initialization ............................................................................................................................... 26
4 ‘DM’, Installation
5.1 Connection ................................................................................................................................. 27
4.2 Connection on the splitter DT50 ................................................................................................ 28
4.3 Ferrites Protection of Displays ................................................................................................... 28
4.4 Configuration ............................................................................................................................. 29
5 DC-DM Communication Master/Slaves
6.1 Connection ................................................................................................................................. 30
7 ALARM LIST ............................................................................................................... 31
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Display ‘DC’ 1
1.1 Introduction
The display ‘DC’ is customized for the user.
It allows an overview of the operation of the Unit and allows access to some parameters.
Depending on the setting in the Climatic, two display configurations are possible:
• Mode ‘Light’
• Mode ‘Full’
The 'DC' is designed to be remotely connected of the Unit.
The 'DC' is equipped with a temperature sensor.
The temperature sensor allows the acquisition of room temperature to control.
1.2 Temperature measurement
All Lennox Unit comes with a temperature sensor; it must be placed in the conditioned area.
But if the 'DC' is placed in the area conditioned by the Unit, it is possible, in this case, to use the temperature
measurement of the 'DC'.
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1.3 Quick Action
1.3.1 How to See the Operation of the Unit 4 ?
Only if several units are connected to the DC.
Turn the knob to have the text ‘Unit’.
Press the knob to switch in 'Set' mode.
Turn the knob to select number 4.
Press the knob to confirm your choice
1.3.2
Press the button a few seconds.
How to Start all Units connected at this DC ?
The units can not be powered On/Off by the DC if the service display DS is connected.
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1.3.3
Only if several units are connected to the DC.
Select the Unit 4 (see: How to See the Operation of the Unit 4 ?)
Turn the knob to have the text ‘I-O’.
Press the knob to switch in 'Set' mode.
Turn the knob to select number 1 (1 for ‘On’, 0 for ‘Off’).
Press the knob to confirm your choice
How to Start Unit 4 ?
The units can not be powered On/Off by the DC if the service display DS is connected.
1.3.4
Turn the knob to have the text ‘Set’.
The value displayed is the temperature setpoint.
How to See the Value of the Current Setpoint Temperature ?
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1.3.5
Turn the knob to have the text ‘Set’.
Press the knob to switch in 'Set' mode.
Turn the knob to change the value.
Press the knob to confirm your choice
How to Modify the Value of the Current Setpoint Temperature ?
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1.4 Presentation
1.4.1 Showing
1.4.2
Buttons
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1.5 Use
1.5.1 Control operating mode.
Only for Flatair and Aqualean ranges.
Press until the desired operating mode is displayed.
Heating mode
Cooling mode
1.5.2
Only for Flatair and Aqualean ranges.
Press to select the desired speed (min, med, max) or automatic (Auto).
Minimum speed
Automatic mode
Fan Speed Management.
Median speed
Maximum speed
Automatic Speed
1.5.3
By supporting a few seconds, the button you can activate or not (On/Off) the Unit connected.
If the symbol completed by the time is displayed, the Unit is stopped and the 'DC' in sleep mode.
To restart the unit, press the button a few seconds
If the DC is used with the Master/Slaves bus in this case, the 'Off' phase, stops all Rooftop connected on the Bus, 'On'
phase restarts all.
On/Off unit
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1.5.4 Setting time
At initialization of the 'DC', the CLIMATIC are synchronized time and day of week with the clock 'DC'.
To view the clock, briefly, press the button
To set the clock press the button a few seconds
The hour value, flashes.
Turn the knob to adjust the desired value.
Press the knob to select your choice.
Then the minute value, flashes.
Turn the knob to adjust the desired value.
Press the knob to select your choice.
| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
Then the weekday value, flashes.
Turn the knob to adjust the desired value.
Press the knob to select your choice.
After a few seconds 'DC' communicates the new time to the CLIMATIC.
1.5.5
Information available
By rotating the knob you can view or modify the following values:
1.6 DC set in ‘Light’ mode
* : Unit Index selected by the ‘DC’
: Volatile temperature set point current mode (°C)
: : Indoor (Room) temperature (°C)
: Alarms code
* : Available if the option is enabled.
: Adjustable with ‘DC.
1.6.1
If the DC is used with the Master/Slaves bus this item can select or know the Unit Index selected by the 'DC'.
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Unit selected
1.6.2
This item allows you to view and/or modify the control temperature required for the Unit selected.
If this point is changed, this value is used until the scheduling changes mode (Day, Day I, Day II, Night, BMS).
At each change of the mode, the CLIMATIC sets the value of this set point on the preset value in the mode concerned.
1.6.3
This item allows you to view the code of different active alarms on the Unit.
If the Unit isn't in alarm, this item is to 0.
1.6.4
This item indicates the measured air temperature in the room conditioning.
The room temperature isn't available if the CLIMATIC is configured to supply control.
Indoor (Room) temperature
Volatile Temperature set point
Alarms code
1.7 DC set in ‘Full’ mode
- : Unit Index selected by the ‘DC’
- *: On/Off of the Unit selected.
- : Predetermined temperature set point current mode (°C)
- : Volatile temperature set point current mode (°C)
- : Alarms code
-
- : Supply temperature (°C)
-
- * : Indoor (Room) humidity (%hr)
- * : Indoor (Room) Air quality (ppm)
- * : Opening of fresh air damper (%)
* : Available if the option is enabled.
: Available if the level 2 is activated.
: Adjustable with ‘DC.
* : Outdoor temperature (°C)
* : Indoor (Room) temperature (°C)
1.7.1
This item can select or know the Unit Index selected by the 'DC'.
1.7.2
If the DC is used with the Master/Slaves bus this item allows you to view and/or change the status of starting or
stopping of the Unit selected.
1.7.3
This item allows you to view and/or modify the control temperature required for the Unit selected.
If this point is changed, this value is used until the scheduling changes mode (A, B, C, D, BMS).
At each change of the mode, the CLIMATIC sets the value of this set point on the preset value in the mode concerned.
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Unit connected
On/Off, Power
Volatile Temperature set point
1.7.4 Predetermined Temperature set point
If level 2 is active, this item allows you to view and/or change the preset temperature control for the active mode.
1.7.5
This item allows you to view the code of different active alarms on the Unit.
If the Unit isn't in alarm, this item is to 0.
By this item it's possible to reset the alarm activated. To do this set the value of the item to the value 0.
1.7.6
This item indicates the measure temperature of the air outside.
The outside temperature isn't available for the WSHP range.
1.7.7
This item indicates the measure of outlet air temperature of the Unit.
1.7.8
This item indicates the measured air temperature in the room conditioning.
The room temperature isn't available if the CLIMATIC is configured to supply control.
Alarms code
Outdoor temperature
Supply temperature
Indoor (Room) temperature
1.7.9
This item shows the measured relative humidity of the air in the room conditioning.
The room humidity isn't available if the option of humidity management isn't set.
1.7.10
This item indicates the measured rate of CO² in conditioning room, in ppm.
The measurement of CO² isn't available if the option isn't set.
1.7.11
This item indicates the measured value of the opening rate of the fresh air damper, in%, (mixture of outside air and
return air)
This value is only available if the Unit is equipped with this option.
Indoor (Room) relative humidity
Measurement of CO²
Opening of fresh air damper
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1.8 Setting Value
If the value of the selected item is modified .
To activate the modified value
Press the knob .
The symbol appears on the right side of the value.
Turn the knob to adjust the desired value.
Press again on the knob to confirm your choice.
The symbol is no longer displayed on the right side of the value.
The rotation of the knob is for select a new item.
1.9 Activation level 2
(2 buttons on the right simultaneously)
Simultaneously press the keys and .
After some seconds the text appears and the value '000' flashes.
Turn the knob to change the value to select the number 066. Then validate the code by pressing the knob.
If the code is wrong access the setup menu is not possible and the 'DC' returns to the previous display.
If the code is correct the level 2 is actif, and symbol is displayed to the right of the value.
The level 2 is turned off automatically every hour.
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Display ‘DM’ 2
The display 'DM' is customized for the user.
It allows an overview of the operation of the Unit and allows access to some parameters.
The 'DM' is designed to be remotely connected of the Unit.
The 'DM' can be connected to several Lennox Units, Between 1 and 8 units
2.1 Quick Action
2.1.1 How to See the Operation of the Unit 4 ?
Press, several times, the button ‘Esc’ to display the page 'Unit'.
Press, several times, the button ‘Down’ to select number 4
Press ‘Enter’ to confirm your choice
Display for a unit to ‘On’ Display for a unit to ‘Off’
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2.1.2 How to Start Unit ?
Press ‘Prg’ to activate the setup menu
If necessary, press several times ‘Up’ or ‘Down’ to blacken the icon
Press ‘Enter’ to confirm your choice
Press ‘Up’ or ‘Down’ to change the state ‘Off’ to ‘On’
Press ‘Enter’ to confirm your choice
Press ‘Esc’ to return to the main screen
The units can not be powered On/Off by the DM if the service display DS is connected.
2.1.3
Press ‘Prg’ to activate the setup menu
If necessary, press several times ‘Up’ or ‘Down’ to blacken the icon
The value displayed is the temperature setpoint.
How to See the Value of the Current Setpoint Temperature ?
Press ‘Esc’ to return to the main screen
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2.1.4
Press ‘Prg’ to activate the setup menu
If necessary, press several times ‘Up’ or ‘Down’ to blacken the icon
Press ‘Enter’ to confirm your choice
Press ‘Up’ or ‘Down’ to change the value
Press ‘Enter’ to confirm your choice
How to Modify the Value of the Current Setpoint Temperature ?
Press ‘Esc’ to return to the main screen
2.2 Functionality of the DM
2.2.1 Selection of Unit
A DM can be connected to 8 units on the pLan bus. Screens DM connected, alternatively, to one of BM.
The next screen allows selection of the unit to display:
Each of the 8 Unit is represented by a number.
The Unit selected is indicated by its number which is framed.
Each time you press the button 'Down Arrow' connects the display on the next Unit.
Button 'Enter': Go to main screen.
Button 'Down Arrow': Select the next Unit.
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2.2.2 Unit ‘Off’
If the Unit is stopped 'Off', this screen is activated.
Button 'Alarm': Go to Alarm list.
Button 'Prg': Go to Setup menus of the unit.
Button 'Esc': Return to the choice of Unit selected.
2.2.3
2.2.3.1 Main
Top left :
Big, numerical value: Measured value of the air temperature in the conditioned space.
Top right:
Bottom right:
Mode state based on the schedule, hour, minute, of Climatic™ :
Unit Operation
Control in heating mode or control in cooling mode
State of the ventilation
Mode Night
Mode Day
Mode Day I
Mode Day II
Bottom left:
If the unit is in alarm, this symbol is displayed.
Button 'Alarm': Go to Alarm list.
Button 'Prg': Go to Setup menus of the unit.
Button 'Esc': Return to the choice of Unit selected.
Button 'Up Arrow': Go to another display of the Unit operation.
Button 'Down Arrow': Go to another display of the Unit operation.
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2.2.3.2 Value
To the left of the house:
Visualization of the value of outdoor humidity (if enabled).
Visualization of the value of outdoor temperature.
In the house:
Visualization of the value of indoor humidity (if enabled).
Visualization of the value of the indoor temperature.
Visualization of the value of the rate of indoor air quality (if enabled).
2.2.3.3 Set-points
Visualization of the set point of heating mode.
Visualization of the set point of cooling mode.
2.2.3.4 Operation
Visualization of the opening percentage of fresh air damper.
Visualization of the percentage of compressors engaged.
Visualization of the percentage of heaters engaged.
Button 'Alarm': Go to Alarm list.
Button 'Prg': Go to Setup menus of the unit.
Button 'Esc': Return to main screen.
Button 'Up Arrow': Go to previous display of the Unit operation.
Button 'Down Arrow': Go to next display of the Unit operation.
2.2.4
History used to store the last 99 alarms occurred on the unit.
Each alarm is stored on the date and time the fault occurred.
An active alarm is signified by the symbol 'Bell'.
An alarm not active is signified by the symbol '.'.
Each alarm is signified by a 3 digit code
Alarm list
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To have the text of fault code, position the cursor on the desired line, by using the 'Up Arrow' or 'Down Arrow' and
then confirm by pressing 'Enter'
Button 'Esc': Return to main screen.
Button 'Up Arrow': Positions you in the list.
Button 'Enter': Go to text of failure code.
Button 'Down Arrow': Positions you in the list.
2.2.5
2.2.6
Setup menus
Button 'Alarm': Go to Alarm list.
Button 'Esc': Return to main screen.
Button 'Up Arrow': Selects the previous function.
Button 'Enter': Go to the screen of the selected function.
Button 'Down Arrow': Selects the next function.
Setting; Customer Temperature
View and/or modify the offset, or set point, of the temperature control desired for the Unit selected.
If the set-point is changed, this value is maintained as long as the scheduling of Unit doesn't change modes (Night,
Day, Day I, Day II, BMS).
At each change of the mode the CLIMATIC sets the value of this set-point on the preset value in the mode concerned.
Button 'Alarm': Go to Alarm list.
Button 'Esc': Return to Setup menus of the unit.
Button 'Up Arrow': Increases the set-point value.
Button 'Enter': Valid the changes then return to Setup menus of the unit.
Button 'Down Arrow': Decreases the set-point value.
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2.2.7
View/edit, status of Off/On of the unit.
2.2.8
Setting; On/Off Unit
Button 'Alarm': Go to Alarm list.
Button 'Esc': Return to Setup menus of the unit.
Button 'Up Arrow': Reverses the state.
Button 'Enter': Valid the changes then return to Setup menus of the unit.
Button 'Down Arrow': Reverses the state.
The units can not be powered On/Off by the DM if the service display DS0 is connected.
Setting; Clock of Climatic™
View/edit, hour, minute, day of month, month and year of the clock Climatic™.
Button 'Alarm': Go to Alarm list.
Button 'Esc': Return to Setup menus of the unit.
Button 'Up Arrow': Increases the selected value.
Button 'Enter': Valid the changes and puts you to the next field.
Button 'Down Arrow': Decreases the selected value.
2.2.9
Access to the Setup Menus Plus
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2.2.10 Setup menus Plus
Access to the setup menus is protected by a password.
The password must be entered digit by digit.
If the password is correct, the lock opens, and the selection of the choice of function is active.
Button 'Alarm': Go to Alarm list.
Button 'Esc': Return to Setup menus of the unit.
Button 'Up Arrow': Increases the value of the digit password or Selects the previous function.
Button 'Enter': Puts you on the next digit password, or Go to the screen of the selected function.
Button 'Down Arrow': Decreases the value of the digit password or Selects the next function.
2.2.11
Setting; Temperature
View/edit, the set-point heating mode of the schedule mode selected.
View/edit, the set-point cooling mode of the schedule mode selected.
Button 'Alarm': Go to Alarm list.
Button 'Esc': Return to Setup menus Plus of the unit.
Button 'Up Arrow': Change the schedule mode or Increases the set-point value.
Button 'Enter': Valid the changes and puts you to the next field.
Button 'Down Arrow': Change the schedule mode or Decreases the set-point value.
2.2.12
View/edit, the set-point minimum fresh-air of the schedule mode selected.
Setting; Report Minimum Fresh-Air.
Button 'Alarm': Go to Alarm list.
Button 'Esc': Return to Setup menus Plus of the unit.
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Button 'Up Arrow': Change the schedule mode or Increases the set-point value.
Button 'Enter': Valid the changes and puts you to the next field.
Button 'Down Arrow': Change the schedule mode or Decreases the set-point value.
2.2.13
View/edit, reset of alarm and safety.
2.2.14
Setting; Reset Alarms
Button 'Alarm': Go to Alarm list.
Button 'Esc': Return to Setup menus Plus of the unit.
Button 'Up Arrow': Reverses the state.
Button 'Enter': Reset alarms, if the word 'Reset' is selected, then return to Setup menus Plus.
Button 'Down Arrow': Reverses the state.
Setting; Schedule of Climatic™
View/edit, hour and minutes of beginning of each zone.
View/edit, the operating mode of the zone.
The schedule is different each weekday.
You must set a schedule for Monday, Tuesday, ..., and Sunday.
Button 'Alarm': Go to Alarm list.
Button 'Esc': Return to Setup menus Plus of the unit.
Button 'Up Arrow': Change the schedule mode or Increases the selected value.
Button 'Enter': Valid the changes and puts you to the next field.
Button 'Down Arrow': Change the schedule mode or Decreases the selected value.
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2.3 Organizational screens
2.3.1 Selection of Unit
2.3.2
Unit Operation
2.3.3
Alarm list
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2.3.4 Setup menus
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DC, Installation 3
The 'DC' has been designed for flush mount assembly, on distribution boxes compliant with the standards in force.
3.1 Connection
WARNING: Separate as much as possible probes, displays, logical input cables
from power cables with strong inductive load, in order to avoid possible
electromagnetic perturbations.
3.1.1 Important warning
An error connecting to the display immediately causes the deterioration of this one
or BM.
Any wiring modification on the CLIMATIC must be done by Lennox technician or employees having valid electrical
qualification and authorization.
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3.1.2
The power of the 'DC' can be 24Vac (+10…-15%) 50/60Hz or 24Vdc (22…35Vdc), maximum current of 2VA.
Lennox recommends a 24Vac supply (provided by Unit) for installation of the display less within 30 meters of Unit.
For connection of the display of over 30 meters, a power supply, close to the display, 24Vac must be provided by the
installer.
For an external connection to the Unit (24V) using a transformer class 2 under 0.1A
For any modification of wiring on the 24V supply or on 4-20mA sensor, check the polarity prior to apply the power.
Wrong polarity may cause serious damage and destroy the Plan network. Lennox will not accept liability for
damage caused by wrong power connection or any wiring modification done by people without valid training and
qualifications.
3.1.3
The 'DC' is controlled by a communication bus: RS485 2 wires.
3.1.4
The connection of power and communication must be made by the following cable:
- LiYCY-P (0.34 mm ²), 2 pairs with general shield.
The cable length, with power, should not exceed 30m.
The cable length without power (24V external) must not exceed 150m.
For a better electromagnetic protection, Lennox recommends the use of LiYCY-P cable
For extended networks fit a 120 Ohm resistor (R2) between RX/TX+ and RX/TX- on the last device, to avoid possible
communication problems.
Power supply
Communication
Cable Features
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3.2 Ferrites Protection of Displays
To prevent radio interference that may cause miscommunication or destruction of elements on the screen, you need
to equip each end of the cable a ferrite (supplied by Lennox).
3.3 Temperature Sensor
All Lennox Unit comes with a temperature sensor; it must be placed in the conditioned area.
But if the 'DC' is placed in the area conditioned by the Unit, it is possible, in this case, to use the temperature
measurement of the 'DC'.
To indicate the CLIMATIC your choice, set the point 3213:
- ‘128' to use the measure of the 'DC'
- ‘1 BM-B12' or '2 BM-B1' to use the remote probe
Note:
- - For Unit with a 'medium' CLIMATIC :
Connect the remote sensor between points B12 and GND, terminal block J18.
- - For Unit with a 'small' CLIMATIC:
By default the CLIMATIC control the temperature measurement of return. If you want to control on a
measure of room temperature, disconnect the return probe between points B1 and GND, terminal block J13.
Connect the remote sensor in place.
3.4 Configuration
For communicate with the CLIMATIC this basic parameters of internal ‘DC’ must to be settled.
3.4.1
To do this, when the 'DC is powered; simultaneously press the keys and .
After some seconds the text appears and the value '000' flashes
Turn the knob to change the value to select the number 022. Then validate the code by pressing the knob.
If the code is wrong access the setup menu is not possible and the 'DC' returns to the previous display.
If the code is correct the display shows
Setup Menu
(2 buttons on the right simultaneously)
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3.4.2 Choice of Parameters
By rotating of the knob you can view and modify the following parameters:
- : Address 'DC' on the communication bus (Always set to value 31)
- : Communication speed (always set to value 2)
- : Backlight mode
- : Intensity of the backlight
- : Probe calibration
- : Screen contrast
- : Disabling 'Bip' keys
- : Password (Always set to value 22)
- : Real Time Clock 'DC'; Year
- : Real Time Clock 'DC'; Month
- : Real Time Clock 'DC'; Day
- : Real Time Clock 'DC'; weekday (1 = Monday)
- : Real Time Clock 'DC'; Hour
- : Real Time Clock 'DC'; Minute
- : Exits the Settings mode
3.4.3
To activate the modified mode value:
After to have select the desired parameter by rotating the knob .
Press the knob .
The symbol appears on the right side of the value.
Turn the knob to adjust the desired value.
Press again on the knob to confirm your choice.
The symbol is no longer displayed on the right side of the value.
The rotation of the knob is for select a new setting.
3.4.4
Changing the Value of Parameters
Mandatory values
- : 31
- : 2
- : 22
3.5 Initialization
If the connection between the CLIMATIC and the 'DC is not correct (Offline) screen displays only the symbol .
In this case check:
- - The connection between CLIMATIC and 'DC'
- - The setting of the 'DC'
- - The power of CLIMATIC
If the connection between the CLIMATIC and the 'DC is correct (Online) to power up the screen displays only the
symbol .
This phase allows the CLIMATIC to set up the 'DC' with options of Unit.
After some seconds, DC is operational.
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‘DM’, Installation 4
The "DM" was designed for wall mounting.
The optional DM delivered is designed to be wall mounted.
Positioning the cable through the rear
Fasten the rear wall using button head screws provided in the package.
Connect the cable from the main board on the jack on the back of the screen DM
Attaching the front panel on the back using countersunk screws provided.
Snap frame.
4.1 Connection
WARNING: Separate as much as possible probes, displays, logical input cables
from power cables with strong inductive load, in order to avoid possible
electromagnetic perturbations.
4.1.1 Important warning
An error connecting to the display immediately causes the deterioration of this one
or BM.
Any wiring modification on the CLIMATIC must be done by Lennox technician or employees having valid electrical
qualification and authorization.
4.1.2
The 'DM' is powered by the BM.
4.1.3
The 'DM' is controlled by a communication bus: RS485 2 wires.
4.1.4
The connection of power and communication must be made by the following cable:
- For a length of 0 to 300m: AWG22 (0.34 mm ²), two crossed pairs with screen.
- For a length of 0 to 500m: LiYCY-P (0.34 mm ²), two pairs shielded general.
The cable length should not exceed 500m.
For better protection of electromagnetic disturbances Lennox recommends the installation of cable LiYCY-P
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Power supply
Communication
Cable Features
4.2 Connection on the splitter DT50
The display DM connects to Climatic™ on the screw terminals of the card DT50.
4.2.1
The board is equipped with three RJ12 phone jacks and a screw connector (SC).
Jumpers:
The "displays" are directly supplied by the Climatic™ board with a 30 VDC power supply. Pay attention to the value of
this voltage when multiple cards are used.
J14 and J15 closed or cut the power supply:
J14 and J15 set between 1-2:
Connectors A, B, C and SC are in parallel. Power is available on all connectors.
J14 and J15 set between 2-3:
B and C connectors are supplied in parallel but the connectors A and SC are not.
Displays connected to these ports are not powered.
If J14 and J15 are set differently, the dispatcher DT50 DOESN'T WORK and therefore displays connected don't work
Installation Guide dispatcher DT50
4.3 Ferrites Protection of Displays
To prevent radio interference that may cause miscommunication or destruction of elements on the screen, you need
to equip each end of the cable a ferrite (supplied by Lennox).
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4.4 Configuration
4.4.1 Brightness / Contrast
The display is equipped with a contrast, but it can be adjusted manually. For manual adjustment of contrast,
simultaneously press the keys 'Alarm' and 'Prg' and press buttons 'Arrow' or 'Down Arrow' to increase or decrease the
contrast.
4.4.2
The address of the terminal (DM) must be checked after putting the card to 'On'.
Access the setup mode by pressing the keys 'Arrow', 'Enter' and 'Down Arrow' for at least 5 seconds.
Press the 'Enter' to place the cursor on the 'Setting'
With the 'Arrow' or 'Down Arrow' set the address of the display 31 of DM, then confirm by pressing 'Enter'
The screen 'Display address changed' is displayed.
If after 5 seconds the display is not correct;
Access, a second time, the setup mode by pressing the keys 'Arrow', 'Enter' and 'Down Arrow' for at least 5 seconds,
until the next screen.
Press the 'Enter' to place the cursor on the 'Setting'
Press a second time on the 'Enter' key to place the cursor on the line I / O board address'
With the 'Arrow' or 'Down Arrow' replace '-' by the address of the BM connected and confirm by pressing 'Enter'
Configuring the address of the terminal
DC-DM-ROOFTOP-IOM-1801-E - 29 -
DC-DM 5
Communication Master/Slaves
If the communication bus Master/Slaves is connected between several Unit (Maximum 8)
The 'DM', connected on this bus, allows viewing, alternatively, information of all connected units.
5.1 Connection
The inter-bus boards (pLan) Climatic™ connects to connector J8 on the BM.
'Star’ connection is not recommended for optimum performance. It is advisable to connect a maximum of two cables
per unit.
Warning:
The BM 24Vac cards should not be connected to the 'Earth'
5.1.1
The connection must be wired as follows:
- For a length of 0 to 300m: AWG22 (0.34 mm ²), a twisted pair shielded.
- For a length of 0 to 500m: LiYCY-P (0.34 mm ²), a pair overall shield.
The cable length should not exceed 500m.
For better protection of electromagnetic disturbances Lennox recommends the installation of cable LiYCY-P
Cable Features
5.1.2
Each Climatic™ must be set with a communication address different.
The address setting must be done with a DS in (3171).
The value of the addresses must be between 1 and 8
Each Climatic™ must be set with the same number of identification Master (ID).
The ID must be equal to the communication address of the card where the DC is connected.
The ID setting must be done with a DS in (3173).
Each Climatic™ must be set with the same sub-bus identification.
The sub-bus setting must be done with a DS in (3172).
For each Climatic, with a DS, you must set in (3151) the type of remote display, DC or DM.
DC-DM-ROOFTOP-IOM-1801-E - 30 -
Setting
MENU
• Problem with the pump
switch.
Water Condenser, Flow
low water flow rate.
ALARM LIST
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
• Air system obstructed or
001
Blower, Flow Switch, Cut-off.
The differential pressure
between the treatment unit and
the filters is too small.
Delayed: 1min,
Waiting stop: 1min,
Enabled: 3min after Blower
start.
Full stop. 3/day
closed,
• Belts broken,
• Problem with the fan wiring,
• Problem with the pressure
transmitter wiring,
• Incorrect settings of the safety
threshold.
• Check the system,
• Replace the belts,
• Check the connections,
• Check the settings (2333 or
3343).
DS
[2332]
[3342]
Water Condenser, Flow
Switch Cut Off.
002
003
004
004
005
The flow switch has detected a
low water flow rate in the
condenser heat exchanger.
Delta-T.
The ΔT(|inlet-outlet|) of the
condenser heat exchanger has
too low or too high, detect a
Blower, Filters, Clogged.
The differential pressure
between the treatment unit and
the filters is too high.
Blower, Filters, Clogged.
Clogged or Missing Filters
Alarm keeps active during 168
hours (7 days non stop).
Blower, Filters, Missing.
The differential pressure
between the treatment unit and
the filters is too low.
Delayed: 5s,
Waiting stop: 1min,
Enabled: 5s after one
compressor start.
Threshold: < 1K, > 40K,
Delayed: 10min,
Waiting stop: 2min,
Enabled: 10min after one
compressor start.
Threshold: > [2335][3345],
Delayed: 10min,
Enabled: 10min after Blower
start.
Delayed: 168h. Full stop. Manually
Threshold: > [2334][3344],
Delayed: 10min,
Enabled: 10min after Blower
start.
Stop all
compressors.
Stop all
compressors.
Signalling. Automatic
Signalling. Automatic
3/day
3/day
control wiring,
• Problem with the flow switch
wiring,
• Dirty or clogged water filter,
• Wrong setting of the flow
• Problem with the pump
control wiring,
• Dirty or clogged water filter.
• Filters clogged,
• Problem with the pressure
transmitter wiring,
• Incorrect settings of the safety
threshold.
• Filters clogged,
• Problem with the pressure
transmitter wiring,
• Incorrect settings of the safety
threshold.
• Filters missing,
• Problem with the pressure
transmitter wiring,
• Incorrect settings of the safety
threshold.
• Check the pump connections ,
• Check the flow switch
connections,
• Clean the water filter,
• Check the flow switch
settings.
• Check the pump connections,
• Clean the water filter.
• Fit new filters,
• Clean or replace the filters,
• Check the connections,
• Check the settings (2335 or
3345).
• Fit new filters,
• Clean or replace the filters,
• Check the connections,
• Check the settings (2335 or
3345).
• Fit new filters,
• Clean or replace the filters,
• Check the connections,
• Check the settings (2334 or
3344).
[2533]
[2531]
and
[2532]
[2332]
[3342]
[2332]
[3342]
[2332]
[3342]
DC-DM-ROOFTOP-IOM-1801-E - 31 -
DS
MENU
Water Condenser, Water
level detector.
Main, Power Supply,
'400V')
Hot Water, Risk of Frosting.
frosting on the system.
• Problem with wiring
pressure.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
008
009
011
012
013
014
Level.
Water leak detected by the
Electrical Fault.
Main 400V power supply is not
present (Customer contact
Electrical Heaters,
Overheating.
The status of the safety
thermostat of the main
electrical heater signals an
oveheating on the system.
Fresh Air, Electrical Heater,
Overheating.
The status of the safety
thermostat of the Fresh Air
electrical heater signals an
oveheating on the system.
The safety thermostat of the
hot water signals a risk of
Gas Burner 1.
The gas burner control box has
generated a fault and is no
longer controlling the fume
extractor fan.
Waiting stop: 1s (W aiting for
the closure of the contact),
Delayed: 30s.
Enabled: At power on. Full stop. Automatic
Delayed: 5s,
Enabled: 5s after one electrical
heater start.
Delayed: 5s,
Enabled: 5s after one electrical
heater start.
Delayed: 1s. Full stop. Manually
Delayed: 5s,
Waiting stop: 4min,
Enabled: 6min after gas burner
requested (10s for eNeRGy).
Stop all
compressors.
Stop the
electrical heater
If [3114] = True:
Full stop.
Stop the
electrical heater
If [3114] = True:
Full stop.
Stop the gas
burner
If [3114] = True:
Full stop.
10/day • Leakage on the piping. • Check the piping. [2536]
Manually
Manually
3/day
• Main power issue,
• Wrong setting.
• Problem with wiring of the
electrical heaters,
• Air system obstructed or
closed,
• Filter clogged,
• Belts broken.
• Problem with wiring of the
electrical heaters,
• Air system obstructed or
closed,
• Fresh air damper closed,
• Belts broken.
• Check the connections,
• The fresh air damper is
blocked opening.
connection,
• Problem with electronic gaz
controler,
• Problem with gas supply or
• Check the main power
tension,
• Check the settings (3131 to
3147).
• Check the connections of the
electrical heaters,
• Check the air system,
• Clean the filters,
• Replace the belts.
• Check the connections of the
electrical heaters,
• Check the air system,
• Check air damper,
• Replace the belts.
• Check the connections.
• Check air damper.
• Check the connections.
• Check gas burner.
[2181]
to
[2197]
[2723]
[2882]
[2733]
[2713]
Gas Burner 2.
The gas burner control box has
015
generated a fault and is no
longer controlling the fume
extractor fan.
DC-DM-ROOFTOP-IOM-1801-E - 32 -
Delayed: 5s,
Waiting stop: 4min,
Enabled: 6min after gas burner
requested (10s for eNeRGy).
Stop the gas
burner
If [3114] = True:
Full stop.
3/day
• Air system obstructed or
closed,
• Filter clogged,
• Belts broken.
• Check the air system,
• Clean the filters,
• Replace the belts.
[2716]
DS
MENU
• Problem with wiring
pressure.
• Problem with wiring
pressure.
• Problem with wiring
pressure.
• Problem with wiring
pressure.
• Problem with wiring
pressure.
• Check the air system / Check
• Check the setting (3252).
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
016
017
018
019
020
Gas Burner, Overheating.
The status of the safety
thermostat signals an
oveheating on the system.
Gas Burner 3.
The gas burner control box has
generated a fault and is no
longer controlling the fume
extractor fan.
Gas Burner 4.
The gas burner control box has
generated a fault and is no
longer controlling the fume
extractor fan.
Gas Burner 5.
The gas burner control box has
generated a fault and is no
longer controlling the fume
extractor fan.
Gas Burner 6.
The gas burner control box has
generated a fault and is no
longer controlling the fume
extractor fan.
Delayed: 5s,
Enabled: 5s after one gas
burner requested.
Delayed: 5s,
Waiting stop: 4min,
Enabled: 6min after gas burner
requested.
Delayed: 5s,
Waiting stop: 4min,
Enabled: 6min after gas burner
requested.
Delayed: 5s,
Waiting stop: 4min,
Enabled: 6min after gas burner
requested.
Delayed: 5s,
Waiting stop: 4min,
Enabled: 6min after gas burner
requested.
Stop the gas
burner
If [3114] = True:
Full stop.
Stop the gas
burner
If [3114] = True:
Full stop.
Stop the gas
burner
If [3114] = True:
Full stop.
Stop the gas
burner
If [3114] = True:
Full stop.
Stop the gas
burner
If [3114] = True:
Full stop.
Manually
3/day
3/day
3/day
3/day
connection,
• Problem with electronic gaz
controler,
• Problem with gas supply or
connection,
• Problem with electronic gaz
controler,
• Problem with gas supply or
connection,
• Problem with electronic gaz
controler,
• Problem with gas supply or
connection,
• Problem with electronic gaz
controler,
• Problem with gas supply or
connection,
• Problem with electronic gaz
controler,
• Problem with gas supply or
• Check the connections.
• Check gas burner.
• Check the connections.
• Check gas burner.
• Check the connections.
• Check gas burner.
• Check the connections.
• Check gas burner.
• Check the connections.
• Check gas burner.
#
[2781]
[2783]
[2785]
[2787]
Supply Temperature, Too
High.
021
022
DC-DM-ROOFTOP-IOM-1801-E - 33 -
The temperature measur ed by
the probe is outside of the
permitted range.
Supply Temperature, Too
Low.
The temperature measured by
the probe is outside of the
permitted range.
Threshold: > [3254],
Delayed: 5s,
Enabled: 2min after Blower
start.
Threshold: < [3252],
Delayed: 10min or 5min if Hot
Water Coil,
Waiting stop: 10min,
Enabled: 2min after Blower
start.
Stop all
compressors
and heaters.
Full stop. 3/day
Automatic
• Insufficient airflow,
• Temperature probe failed,
• Problem with wiring of probe,
• Wrong setting.
• Insufficient airflow / Air
damper jammed open,
• Temperature probe failed,
• Problem with wiring of probe,
• Wrong setting.
• Check the air system,
• Replace probe,
• Check the connections of the
probe,
• Check the setting (3254).
the air damper, mechanically
and electrically,
• Replace probe,
• Check the connections of the
probe,
[2231]
[2231]
DS
MENU
Water Condenser
permitted range.
Water Condenser
permitted range.
Water Condenser, Pump.
a failure on the system.
• Problem with wiring
• Pump failure.
Humidifier.
signals a failure on the system.
Room, Air Hr% or g/kgAS,
permitted range.
Room, Air Hr% or g/kgAS,
permitted range.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
023
024
025
026
027
029
Room Temperature, Too
High.
The temperature measured by
the probe is outside of the
permitted range.
Room Temperature, Too
Low.
The temperature measured by
the probe is outside of the
permitted range.
Temperature, Too Low
The temperature measured by
the probe is outside of the
Temperature, Too High
The temperature measured by
the probe is outside of the
The status of the pump signals
Air Quality, Too High.
The value measured by the
sensor is outside of the
permitted range.
Threshold: > [3256],
Delayed: 15s,
Enabled: 2min after Blower
start.
Threshold: < [3255],
Delayed: 15s,
Enabled: 2min after Blower
start.
Threshold: < [3531],
Delayed: 15s.
Threshold: > [3532],
Delayed: 15s.
Delayed: 5s.
Threshold: > [3855],
Delayed: 15s.
Signalling. Automatic
Signalling. Automatic
Stop all
compressors.
Stop all
compressors.
Stop all
compressors.
Signalling. Automatic
Automatic
Automatic
Manually
• Insufficient airflow,
• Temperature probe failed,
• Problem with wiring of probe,
• Wrong setting.
• Insufficient airflow,
• Temperature probe failed,
• Problem with wiring of probe,
• Wrong setting.
• Water loop temperature too
low,
• Wrong setting.
• Water loop temperature too
high,
• Wrong setting.
connection,
• Problem with wiring
connection (sensor in short
circuit or disconnected),
• Sensor damaged,
• Wrong setting.
• Check the air system,
• Replace probe,
• Check the connections of the
probe,
• Check the setting (3256).
• Check the air system,
• Replace probe,
• Check the connections of the
probe,
• Check the setting (3255).
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Check the setting (3531).
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Check the setting (3532).
• Check the wiring connections,
• Check the pump.
• Check the wiring connections,
• Replace the sensor,
• Check the setting (3855).
[2221]
[2221]
[2531]
or
[2532]
[2531]
or
[2532]
[2535]
[2853]
031
032
033
DC-DM-ROOFTOP-IOM-1801-E - 34 -
The status of the humidifier
Too Low.
The value measured by the
sensor is outside of the
Too High.
The value measured by the
sensor is outside of the
Delayed: 1min.
Threshold: < [3258],
Delayed: 15s,
Enabled: 2min after Blower
start.
Threshold: > [3259],
Delayed: 15s,
Enabled: 2min after Blower
start.
Stop the
humidifier.
Signalling. Automatic
Signalling. Automatic
Automatic
• Problem with wiring
connection.
• Humidity sensor failed,
• Problem with wiring of sensor,
• Wrong setting.
• Humidity sensor failed,
• Problem with wiring of sensor,
• Wrong setting.
• Check the wiring connections. [2923]
• Check the wiring connections,
• Replace the sensor,
• Check the setting (3258)
• Check the wiring connections,
• Replace the sensor,
• Check the setting (3259)
[2265]
or
[2266]
[2265]
or
[2266]
DS
MENU
Hot Water, Pump.
circulator has operated.
Stop the pump,
valve.
• Problem with wiring
• Pump failure.
Recovery, Motor.
on the system.
Recovery, Air Flow, Sensor.
measured is incorrect.
Recovery, Outlet
measured is incorrect.
CLIMATIC board, Real Time
clock battery is faulty
Expansion Board, BE N°1,
network.
Expansion Board, BE N°2,
network.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
041
051
052
054
056
059
070
The electrical protection of the
The status of the wheel
recovery motor signals a failure
Recovery, Wheel.
The ΔT(|outdoor-outlet
recovery|) temperature is lower
than the safety limit.
Recovery, Filters, Clogged.
The differential pressure
between the treatment unit and
the filters is too high.
The value of the sensor
Temperature, Probe.
The value of the probe
Clock, Battery.
The CLIMATIC™ real time
Delayed: 15s,
Enabled: 5s after pump start
Delayed: 10s,
Enabled: 30s after motor start.
Threshold: < [3874],
Delayed: 30s,
Waiting stop: 5min,
Enabled: 15min after motor
start.
Threshold: > [3875],
Delayed: 1min.
Delayed: 15s. Stop the motor. Automatic
Delayed: 15s. Stop the motor. Automatic
Delayed: 1s Signalling. Automatic • Battery low voltage • Replace the clock battery #
Close hot water
Stop the motor. Manually
Stop the motor. 3/day
Signalling. Automatic
Manually
connection,
• Problem with wiring
connection,
• Wheel motor failure.
• Wheel belts broken,
• Problem with wiring
connection (sensor in short
circuit or disconnected),
• Sensor damaged,
• Wrong setting.
• Filters clogged,
• Problem with the pressure
transmitter wiring,
• Incorrect settings of the safety
threshold.
• Sensor failure,
• Problem with wiring of sensor.
• Probe failure,
• Problem with wiring of probe.
• Check the wiring connections,
• Check the pump.
• Check the wiring connections,
• Check the motor.
• Replace the belts
• Check the wiring connections,
• Replace the probes,
• Check the setting (3874).
• Fit new filters,
• Clean or replace the filters,
• Check the connections,
• Check the settings (3875).
• Check the sensor
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
[2744]
[2878]
[2873]
or
[2875]
[2876]
[2876]
[2875]
Link Failure.
071
072
DC-DM-ROOFTOP-IOM-1801-E - 35 -
The expansion board 1 is
disconnected from the Fieldbus
Link Failure.
The expansion board 2 is
disconnected from the Fieldbus
Delayed: 1s,
Enabled: 30s after power on.
Delayed: 1s,
Enabled: 30s after power on
Signalling. Automatic
Signalling. Automatic
• Expansion board failed,
• Problem with wiring of
fieldbus,
• Wrong setting.
• Expansion board failed,
• Problem with wiring of
fieldbus.
• Replace expansion board,
• Check the bus connections,
• Check the setting (3121 to
3147).
• Replace expansion board,
• Check the bus connections
#
#
DS
MENU
Blower, Inverter, Link Failure.
network.
Exhaust, Inverter, Link
network.
Circuit 1, Condenser Fan,
network.
Stop C1
compressors.
Circuit 2, Condenser Fan,
network.
Stop C2
compressors.
Circuit 1, Coompressor,
from the Fieldbus network.
Expansion Board, BE N°3,
network.
Expansion Board, eSlave,
Fieldbus network.
Blower, Air Flow and Filters,
measured is incorrect.
Room, Air T°, Probe.
measured is incorrect.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
073
074
075
076
077
078
The EC fans or inverters are
disconnected from the Fieldbus
Failure.
The EC fans or inverters are
disconnected from the Fieldbus
Inverter, Link Failure.
The EC fans or inverters are
disconnected from the Fieldbus
Inverter, Link Failure.
The EC fans or inverters are
disconnected from the Fieldbus
Inverter, Link Failure.
The inverter is disconnected
Link Failure.
The expansion board 3 is
disconnected from the Fieldbus
Delayed: 30s,
Enabled: 30s after power on
Delayed: 30s,
Enabled: 30s after power on
Delayed: 15s,
Enabled: 30s after power on
Delayed: 15s,
Enabled: 30s after power on
Delayed: 15s,
Enabled: 30s after power on
Delayed: 1s,
Enabled: 30s after power on.
Full stop. Automatic
Full stop. Automatic
condenser
fans,
Stop C1
condenser
fans,
Stop C2
Stop C1
compressor.
Signalling. Automatic
Automatic
Automatic
Automatic
• Fans failed,
• Problem with wiring of
fieldbus.
• Fans failed,
• Problem with wiring of
fieldbus.
• Fans failed,
• Problem with wiring of
fieldbus.
• Fans failed,
• Problem with wiring of
fieldbus.
• Driver failed,
• Problem with wiring of
fieldbus.
• Expansion board failed,
• Problem with wiring of
fieldbus.
• Replace fan,
• Check the bus connections
• Replace fan,
• Check the bus connections
• Replace fan,
• Check the bus connections
• Replace fan,
• Check the bus connections
• Replace driver,
• Check the bus connections
• Replace expansion board,
• Check the bus connections
#
#
#
#
#
#
Link Failure.
079
080
081
DC-DM-ROOFTOP-IOM-1801-E - 36 -
The eClimatic on internal split
unit is disconnected from the
Sensor.
The value of the sensor
The value of the probe
Delayed: 1s,
Enabled: 30s after power on.
Delayed: 15s. Full stop. Automatic
Delayed: 15s.
Stop all
compressors
and heaters.
Only
ventilation.
Automatic
Automatic
• Slave eClimatic failed,
• Problem with wiring of
fieldbus.
• Sensor failure,
• Problem with wiring of senso r.
• Probe failure,
• Problem with wiring of probe.
• Replace slave eClimatic,
• Check the bus connections
• Check the sensor
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
#
[2332]
[3342]
[2213]
DS
MENU
Room, Air Hr%, Probe.
measured is incorrect.
Outside, Air T°, Probe.
measured is incorrect.
Outside, Air Hr%, Sensor.
measured is incorrect.
Supply, Air T°, Probe.
measured is incorrect.
Water Condenser, Inlet,
measured is incorrect.
Water Condenser, Outlet,
measured is incorrect.
Return Temperature, Probe.
measured is incorrect.
Air Quality, Sensor.
measured is incorrect.
Blower Pressure, Sensor.
measured is incorrect.
Delayed: 15s,
start.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
082
083
084
085
086
087
088
089
090
The value of the sensor
The value of the probe
The value of the sensor
The value of the probe
Probe.
The value of the probe
Probe.
The value of the probe
The value of the probe
The value of the sensor
The value of the sensor
Delayed: 15s.
Delayed: 15s.
Delayed: 15s.
Delayed: 5s.
Delayed: 15s.
Delayed: 15s.
Delayed: 15s.
Delayed: 15s,
Enabled: 1min after power on.
Delayed: 15s. Full stop. Automatic
Only
ventilation.
Only
ventilation.
Only
ventilation.
Only
ventilation.
Stop all
compressors.
Stop all
compressors.
Only
ventilation.
Signalling. Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
• Sensor failure,
• Problem with wiring of sensor.
• Probe failure,
• Problem with wiring of prob e.
• Sensor failure,
• Problem with wiring of sensor.
• Probe failure,
• Problem with wiring of probe.
• Probe failure,
• Problem with wiring of probe.
• Probe failure,
• Problem with wiring of probe.
• Probe failure,
• Problem with wiring of probe.
• Sensor failure,
• Problem with wiring of sensor.
• Sensor failure,
• Problem with wiring of sensor.
• Check the sensor
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
• Check the sensor
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
• Check the sensor
• Check the wiring connections.
• Check the sensor
• Check the wiring connections.
[2265]
[2211]
[2261]
[2221]
[2531]
[2532]
[2216]
[2853]
[2332]
[3342]
Blower, Fan.
091
092
DC-DM-ROOFTOP-IOM-1801-E - 37 -
The fan motor control is no
longer active.
Blower, Inverter.
Alarm reading by bus on fans
inverter.
Delayed: 5s,
Enabled: 3min after power on,
Enabled: 10s if [3316] = False.
Waiting stop: 30s,
Enabled: 15s after one fan
Full stop. Manually
Full stop. 3/day
• Electric circuit breaker cut,
• Fan motor damaged,
• Fire safety thermostat active
• Thermal motor protection
devices activated,
• Problem with wiring
connection.
• Fan motor damaged,
• Thermal motor protection
devices activated.
• Check, Replace the fan
motor,
• Reset the thermostat,
• Check the air system,
• Check the connection.
• Check fans motor. #
[2313]
DS
MENU
Delayed: 15s,
start.
Fire / Smoke, Detected.
CLIMATIC board, Power Off
start.
EVD N°1, Link Failure.
network.
inverter.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
• Electric circuit breaker cut,
093
Exhaust, Fan.
The fan motor control is no
longer active.
Delayed: 5s,
Enabled: 20s after fans start.
Full stop. Manually
• Fan motor damaged,
• Fire safety thermostat active
• Thermal motor protection
devices activated,
• Problem with wiring
connection.
• Check, Replace the fan
motor,
• Reset the thermostat,
• Check the air system,
• Check the connection.
[2313]
094
099
100
101
102
103
Exhaust, Inverter.
Alarm reading by bus on fans
inverter.
The stand-alone detector
switch (DAD) has detected the
presence of smoke in the unit.
A long period without power
supply has been detected.
Time for compressor crankcase
to sufficiently warm up enough
to avoid refrigerant flooded
The driver 1 of EEV is
disconnected from the Fieldbus
Circuit 1, Fan Condenser.
The thermal motor protection of
the condenser fan has detected
an over temperature.
Circuit 1, Fan Condenser
Inverter.
Alarm reading by bus on fans
Waiting stop: 30s,
Enabled: 15s after one fan
Delayed: 1s.
Threshold: Outside
temperature < 10°C,
Enabled: If cut-off lasts more
than 6 hours at power on.
Delayed: 30s,
Enabled: 1min after power on.
Delayed: 5s,
Waiting stop: 30min,
Enabled: 5s after fan start.
Delayed: 15s.
Full stop. 3/day
Full stop,
Open the fresh
air damper.
Stop all
compressors.
Stop C1 and/or
C2
compressors.
Stop C1
compressors.
Stop C1
compressors.
Manually • Problem with the DAD • Check the connection. [2341]
Automatic
8 hours
Automatic
3/day
Automatic
• Fan motor damaged,
• Thermal motor protection
devices activated.
• Long period without power
supply
• Driver failed,
• Problem with wiring of
fieldbus.
• Electric circuit breaker cut,
• Fan motor damaged,
• Thermal motor protection
devices activated,
• Problem with wiring
connection.
• Fan motor damaged,
• Thermal motor protection
devices activated.
• Check fans motor. #
• Check the unit power-supply #
• Replace driver,
• Check the bus connections
• Check, Replace the fan
motor,
• Check the connection.
• Check fans motor. #
[2215]
#
DC-DM-ROOFTOP-IOM-1801-E - 38 -
DS
MENU
Circuit 1, Leak Refrigerant,
refrigerant circuit.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
Detected.
110
The CLIMATIC has detected a
risk of leakage of the
… Signalling. Manually • Refrigerant leakage • Check the circuit operating #
114
115
116
117
Circuit 1, Compressor,
Electrical Failure.
An electrical failure happened
in the compressors of the
circuit.
Circuit 1, Safety High
Pressure, Cut-off.
The condensing pressure read
by the pressure transducer
exceeds the maximum limit.
Circuit 1 Compressor, Delta
Pressure (HP-LP), Too Low.
The Δp(|High-Low|) pressure is
lower than the safety limit.
Circuit 1, Safety Low
Pressure, Cut-off.
The suction temperature
calculated by the LP pressure
sensor is lower than the
permitted threshold.
Waiting stop: 30min,
Enabled: 5s after one
compressor start.
Threshold: > 42bar/64°C,
Waiting stop: 30min,
Enabled: 5s after one
compressor start.
Threshold: < 1bar,
Delayed: 5s,
Waiting stop: 1min,
Enabled: 1min after one
compressor start.
Threshold: < -27°C,
Delayed: 2min,
Waiting stop: 30min,
Enabled: 6min after one
compressor start.
Or
Threshold: < -33°C,
Delayed: Immediately,
Enabled: immediately.
Stop C1
compressors.
Stop C1
compressors.
Stop C1
compressors.
Stop C1
compressors.
3/day
3/day
3/day
3/day
or
Manually
• Problem with wiring
connection, pressure switch or
compressor internal safety
switch
• Coil condenser dirty,
• Fan condenser not operating.
• Too much Refrigerant charge,
• Problem with wiring
connection, pressure
transducer
• Coil condenser dirty,
• Fan condenser not operating.
• Electric circuit brea ker cut,
• Problem with wiring
connection,
• Reversing valve locked
• Refrigerant charge • Check the circuit operating [2416]
• Check the wiring connection,
• Clean the coil condenser,
• Check the fan operating.
• Check the circuit operating,
• Check the wiring connection,
• Clean the coil condenser,
• Check the fan operating.
• Check the compressor,
• Check the wiring connection,
• Check the reversing valve
swap
[2423]
[2433]
[2414]
[2412]
and
[2414]
DC-DM-ROOFTOP-IOM-1801-E - 39 -
DS
MENU
Threshold: [3513] 0% Glycol <
mode.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
118
119
121
122
Circuit 1, Water Evaporator,
Risk of Frosting.
The suction temperature
calculated by the LP pressure
sensor is lis too low and may
pose a risk for the water
evaporator.
Circuit 1 Compressor,
Condensing T°, Too Low.
The temperature measured by
the probe is outside of the
permitted range.
Circuit 1, Superheat T°, Too
Low.
The value calculed is outside of
the permitted range.
Circuit 1, Superheat T°, Too
High.
The value calculed is outside of
the permitted range.
0°C,
Threshold: [3513] 50% Glycol <
-20°C,
Delayed: 5s,
Waiting stop: 6min,
Enabled: 2s after one
compressor start in heating
Threshold: < 21.5°C,
Delayed: 6min,
Waiting stop: 30min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Threshold: < [3621] - 3K,
Delayed: 6min,
Waiting stop: 6min,
Enabled: 6min after one
compressor start, then 3min
after one compressor or
condenser fan start/stop.
Threshold: (LP < 5°C) < 15K,
Threshold: (LP > 5°C) < 25K,
Delayed: 6min,
Waiting stop: 6min,
Enabled: 6min after one
compressor start, then 3min
after one compressor or
condenser fan start/stop.
Stop C1
compressors.
Stop C1
compressors.
Stop C1
compressors.
Stop C1
compressors.
6/day
Automatic
3/day
3/day
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
[2412]
[2414]
[2616]
[2616]
Circuit 1, Subcooling, Too
123
DC-DM-ROOFTOP-IOM-1801-E - 40 -
Low.
The value calculed is outside of
the permitted range.
Threshold: < 0.6K,
Delayed: 6min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Signalling. Automatic
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
[2623]
DS
MENU
Circuit 1 Compressor, MOP
permitted range.
Threshold: (HP < 20°C) < 5°C,
start/stop.
Threshold: (HP < 35°C) < -
start/stop.
Circuit 1, Elec. Expansion
failure on the system.
Circuit 1, High Pressure,
measured is incorrect.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
124
127
128
129
Circuit 1, Subcooling, Too
high.
The value calculed is outside of
the permitted range.
operating, (Max Operating
Press.).
The suction temperature
calculated by the LP pressure
sensor is outside of the
Circuit 1 Compressor, LOP
operating, (Low Operating
Press.).
The suction temperature
calculated by the LP pressure
sensor is outside of the
permitted range.
Circuit 1 Compressor,
Condensing T°, Too High.
The temperature measured by
the probe is outside of the
permitted range.
Threshold: > 16K,
Delayed: 6min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Threshold: (HP > 45/30°C) <
26/15°C,
Delayed: 6min,
Enabled: 3min after one
compressor or condenser fan
25°C,
Threshold: (HP < 55°C) < -5°C,
Threshold: (HP > 65°C) <
12.5°C,
Delayed: 1min,
Enabled: 3min after one
compressor or condenser fan
Threshold: > 61°C,
Delayed: 20s,
Waiting stop: 6min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Signalling. Automatic
Signalling. Automatic
Signalling. Automatic
Stop C1
compressors.
Automatic
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
[2623]
[2412]
and
[2414]
[2412]
and
[2414]
[2414]
Circuit 1 Compressor,
Discharge T°, Too High.
130
132
141
DC-DM-ROOFTOP-IOM-1801-E - 41 -
Over-temperature detected on
the 1st circuit discharge
temperature.
Valve, Motor.
The driver of EEV signals a
Sensor.
The value of the sensor
Threshold: > 140°C,
Delayed: 20s,
Waiting stop: 6min,
Enabled: 5s after one
compressor start.
Delayed: 1s.
Delayed: 15s.
Stop C1
compressors.
Stop C1
compressors.
Stop C1
compressors.
3/day • Compressor failure • Check the compressor
Automatic • EEV failure • Check the EEV #
Automatic
• Sensor failure,
• Problem with wiring of sensor.
• Check the sensor
• Check the wiring connections.
[2426]
[2436]
[2414]
DS
MENU
Circuit 1, Low Pressure,
measured is incorrect.
Circuit 1, Liquid
measured is incorrect.
Circuit 1, Suction T°, Probe.
measured is incorrect.
Circuit 1, Discharge T°,
measured is incorrect.
Circuit 1, BLDC, Low
guaranteed.
Circuit 1, BLDC, Compressor
alarm.
Circuit 1, BLDC, Out of
permitted range.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
142
143
144
145
148
149
Sensor.
The value of the sensor
Temperature, Probe.
The value of the probe
The value of the probe
Probe.
The value of the probe
Circuit 1, BLDC, High
Discharge Temperature.
Over-temperature detected on
the inverter circuit discharge
temperature.
Pressure Difference.
The Δp(|High-Low|) pressure
persists for a period of time
under the limit value.
Thus optimal lubrication is not
Delayed: 15s.
Delayed: 15s.
Delayed: 15s.
Delayed: 15s.
Threshold: > 60°C,
Waiting stop: 6min,
Enabled: Compressor start.
Waiting stop: 6min,
Enabled: Compressor start.
Stop C1
compressors.
Stop C1
compressors.
Stop C1
compressors.
Stop C1
compressors.
Stop C1
compressors.
Stop C1
compressors.
Automatic
Automatic
Automatic
Automatic
3/day
3/day
• Sensor failure,
• Problem with wiring of sensor.
• Probe failure,
• Problem with wiring of probe.
• Probe failure,
• Problem with wiring of probe.
• Probe failure,
• Problem with wiring of probe.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Check the sensor
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
[2412]
[2415]
[2614]
[2426]
[2426]
[2412]
Fails to Star.
A specific algorithm checks
150
151
DC-DM-ROOFTOP-IOM-1801-E - 42 -
whether the compressor
actually started and, if this is
not the case, signals failed
compressor start through an
Envelop.
The suction temperature
calculated by the LP pressure
sensor is outside of the
Waiting stop: 6min,
Enabled: Compressor start.
Waiting stop: 6min,
Enabled: Compressor start.
Stop C1
compressors.
Stop C1
compressors.
3/day
3/day
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
#
[2412]
and
[2414]
DS
MENU
Circuit 1, BLDC, Power+.
signals a failure on the system.
• Driver failed,
fieldbus.
EVD N°2, Link Failure.
network.
Circuit 2, Fan Condenser
inverter.
Circuit 2, Leak Refrigerant,
refrigerant circuit.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
152
201
202
203
210
214
The status of the inverter
The driver 2 of EEV is
disconnected from the Fieldbus
Circuit 2, Fan Condenser.
The thermal motor protection of
the condenser fan has detected
an over temperature.
Inverter.
Alarm reading by bus on fans
Detected.
The CLIMATIC has detected a
risk of leakage of the
Circuit 2, Compressor,
Electrical Failure.
An electrical failure happened
in the compressors of the
circuit.
Waiting stop: 6min,
Enabled: Compressor start.
Delayed: 30s,
Enabled: 1min after power on.
Delayed: 5s,
Waiting stop: 30min,
Enabled: 5s after fan start.
Delayed: 15s.
… Signalling. Manually • Refrigerant leakage • Check the circuit operating #
Waiting stop: 30min,
Enabled: 5s after one
compressor start.
Stop C1
compressors.
Stop C1 and/or
C2
compressors.
Stop C2
compressors.
Stop C1
compressors.
Stop C2
compressors.
3/day
Automatic
3/day
Automatic
3/day
• Problem with wiring of
• Driver failed,
• Problem with wiring of
fieldbus.
• Electric circuit breaker cut,
• Fan motor damaged,
• Thermal motor protection
devices activated,
• Problem with wiring
connection.
• Fan motor damaged,
• Thermal motor protection
devices activated.
• Problem with wiring
connection, pressure switch or
compressor internal safety
switch
• Coil condenser dirty,
• Fan condenser not operating.
• Replace driver,
• Check the bus connections
• Replace driver,
• Check the bus connections
• Check, Replace the fan
motor,
• Check the connection.
• Check fans motor. #
• Check the wiring connection,
• Clean the coil condenser,
• Check the fan operating.
[2215]
[2453]
[2463]
#
#
Circuit 2, Safety High
Pressure, Cut-off.
215
216
DC-DM-ROOFTOP-IOM-1801-E - 43 -
The condensing pressure read
by the pressure transducer
exceeds the maximum limit.
Circuit 2 Compressor, Delta
Pressure (HP-LP), Too Low.
The Δp(|High-Low|) pressure is
lower than the safety limit.
Threshold: > 42bar/64°C,
Waiting stop: 30min,
Enabled: 5s after one
compressor start.
Threshold: < 1bar,
Delayed: 5s,
Waiting stop: 1min,
Enabled: 1min after one
compressor start.
Stop C2
compressors.
Stop C2
compressors.
3/day
3/day
• Too much Refrigerant charge,
• Problem with wiring
connection, pressure
transducer
• Coil condenser dirty,
• Fan condenser not operating.
• Electric circuit breaker cut,
• Problem with wiring
connection,
• Reversing valve locked
• Check the circuit operating,
• Check the wiring connection,
• Clean the coil condenser,
• Check the fan operating.
• Check the compressor,
• Check the wiring connection,
• Check the reversing valve
swap
[2444]
[2442]
and
[2444]
DS
MENU
Threshold: [3513] 0% Glycol <
mode.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
Threshold: < -27°C,
Delayed: 2min,
Waiting stop: 30min,
Enabled: 6min after one
compressor start.
Or
Threshold: < -33°C,
Delayed: Immediately,
Enabled: immediately.
Stop C2
compressors.
3/day
or
Manually
• Refrigerant charge • Check the circuit operati ng [2446]
217
Circuit 2, Safety Low
Pressure, Cut-off.
The suction temperature
calculated by the LP pressure
sensor is lower than the
permitted threshold.
Circuit 2, Water Evaporator,
Risk of Frosting.
The suction temperature
218
219
221
calculated by the LP pressure
sensor is lis too low and may
pose a risk for the water
evaporator.
Circuit 2 Compressor,
Condensing T°, Too Low.
The temperature measured by
the probe is outside of the
permitted range.
Circuit 2, Superheat T°, Too
Low.
The value calculed is outside of
the permitted range.
0°C,
Threshold: [3513] 50% Glycol <
-20°C,
Delayed: 5s,
Waiting stop: 6min,
Enabled: 2s after one
compressor start in heating
Threshold: < 21.5°C,
Delayed: 6min,
Waiting stop: 30min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Threshold: < [3621] - 3K,
Delayed: 6min,
Waiting stop: 6min,
Enabled: 6min after one
compressor start, then 3min
after one compressor or
condenser fan start/stop.
Stop C2
compressors.
Signalling. Automatic
Stop C2
compressors.
6/day
3/day
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
[2442]
#
[2636]
DC-DM-ROOFTOP-IOM-1801-E - 44 -
DS
MENU
Circuit 2 Compressor, MOP
permitted range.
Threshold: (HP < 20°C) < 5°C,
start/stop.
Threshold: (HP < 35°C) < -
start/stop.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
Threshold: (LP < 5°C) < 15K,
222
Circuit 2, Superheat T°, Too
High.
The value calculed is outside of
the permitted range.
Threshold: (LP > 5°C) < 25K,
Delayed: 6min,
Waiting stop: 6min,
Enabled: 6min after one
compressor start, then 3min
after one compressor or
condenser fan start/stop.
Stop C2
compressors.
3/day
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
[2636]
Circuit 2, Subcooling, Too
223
224
227
228
Low.
The value calculed is outside of
the permitted range.
Circuit 2, Subcooling, Too
high.
The value calculed is outside of
the permitted range.
operating, (Max Operating
Press.).
The suction temperature
calculated by the LP pressure
sensor is outside of the
Circuit 2 Compressor, LOP
operating, (Low Operating
Press.).
The suction temperature
calculated by the LP pressure
sensor is outside of the
permitted range.
Threshold: < 0.6K,
Delayed: 6min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Threshold: > 16K,
Delayed: 6min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Threshold: (HP > 45/30°C) <
26/15°C,
Delayed: 6min,
Enabled: 3min after one
compressor or condenser fan
25°C,
Threshold: (HP < 55°C) < -5°C,
Threshold: (HP > 65°C) <
12.5°C,
Delayed: 1min,
Enabled: 3min after one
compressor or condenser fan
Signalling. Automatic
Signalling. Automatic
Signalling. Automatic
Signalling. Automatic
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
[2643]
[2643]
[2442]
and
[2444]
[2442]
and
[2444]
DC-DM-ROOFTOP-IOM-1801-E - 45 -
DS
MENU
Circuit 2, Elec. Expansion
failure on the system.
Circuit 2, High Pressure,
measured is incorrect.
Circuit 2, Low Pressure,
measured is incorrect.
Circuit 2, Liquid
measured is incorrect.
Circuit 2, Suction T°, Probe.
measured is incorrect.
EVD N°3, Link Failure.
network.
Circuit 3, Leak Refrigerant,
refrigerant circuit.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
229
230
232
241
242
243
Circuit 2 Compressor,
Condensing T°, Too High.
The temperature measured by
the probe is outside of the
permitted range.
Circuit 2 Compressor,
Discharge T°, Too High.
Over-temperature detected on
the 2nd circuit discharge
temperature.
Valve, Motor.
The driver of EEV signals a
Sensor.
The value of the sensor
Sensor.
The value of the sensor
Temperature, Probe.
The value of the sensor
Threshold: > 61°C,
Delayed: 20s,
Waiting stop: 6min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Threshold: > 140°C,
Delayed: 20s,
Waiting stop: 6min,
Enabled: 5s after one
compressor start.
Delayed: 1s.
Delayed: 15s.
Delayed: 15s.
Delayed: 15s.
Signalling. Automatic
Stop C2
compressors.
Stop C2
compressors.
Stop C2
compressors.
Stop C2
compressors.
Stop C1
compressors.
3/day • Compressor failure • Check the compressor
Automatic • EEV failure • Check the EEV #
Automatic
Automatic
Automatic
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Sensor failure,
• Problem with wiring of sensor.
• Sensor failure,
• Problem with wiring of sensor.
• Probe failure,
• Problem with wiring of probe.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Check the sensor
• Check the wiring connections.
• Check the sensor
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
[2444]
[2426]
[2436]
[2444]
[2442]
[2445]
244
301
310
DC-DM-ROOFTOP-IOM-1801-E - 46 -
The value of the sensor
The driver 3 of EEV is
disconnected from the Fieldbus
Detected.
The CLIMATIC has detected a
risk of leakage of the
Delayed: 15s.
Delayed: 30s,
Enabled: 1min after power on.
… Signalling. Manually • Refrigerant leakage • Check the circuit operating #
Stop C1
compressors.
Stop C1 and/or
C2
compressors.
Automatic
Automatic
• Probe failure,
• Problem with wiring of probe.
• Driver failed,
• Problem with wiring of
fieldbus.
• Check the probe
• Check the wiring connections.
• Replace driver,
• Check the bus connections
[2614]
#
DS
MENU
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
314
315
316
317
Circuit 3, Compressor,
Electrical Failure.
An electrical failure happened
in the compressors of the
circuit.
Circuit 3, Safety High
Pressure, Cut-off.
The condensing pressure read
by the pressure transducer
exceeds the maximum limit.
Circuit 3 Compressor, Delta
Pressure (HP-LP), Too Low.
The Δp(|High-Low|) pressure is
lower than the safety limit.
Circuit 3, Safety Low
Pressure, Cut-off.
The suction temperature
calculated by the LP pressure
sensor is lower than the
permitted threshold.
Waiting stop: 30min,
Enabled: 5s after one
compressor start.
Threshold: > 42bar/64°C,
Waiting stop: 30min,
Enabled: 5s after one
compressor start.
Threshold: < 1bar,
Delayed: 5s,
Waiting stop: 1min,
Enabled: 1min after one
compressor start.
Threshold: < -27°C,
Delayed: 2min,
Waiting stop: 30min,
Enabled: 6min after one
compressor start.
Or
Threshold: < -33°C,
Delayed: Immediately,
Enabled: immediately.
Stop C3
compressors.
Stop C3
compressors.
Stop C3
compressors.
Stop C3
compressors.
3/day
3/day
3/day
3/day
or
Manually
• Problem with wiring
connection, pressure switch or
compressor internal safety
switch
• Coil condenser dirty,
• Fan condenser not operating.
• Too much Refrigerant charge,
• Problem with wiring
connection, pressure
transducer
• Coil condenser dirty,
• Fan condenser not operating.
• Electric circuit breaker cut,
• Problem with wiring
connection,
• Reversing valve locked
• Refrigerant charge • Check the circuit operating #
• Check the wiring connection,
• Clean the coil condenser,
• Check the fan operating.
• Check the circuit operating,
• Check the wiring connection,
• Clean the coil condenser,
• Check the fan operating.
• Check the compressor,
• Check the wiring connection,
• Check the reversing valve
swap
#
#
#
Threshold: < 21.5°C,
Delayed: 6min,
Waiting stop: 30min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Signalling. Automatic
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
#
319
Circuit 3 Compressor,
Condensing T°, Too Low.
The temperature measured by
the probe is outside of the
permitted range.
DC-DM-ROOFTOP-IOM-1801-E - 47 -
DS
MENU
Circuit 3 Compressor, MOP
permitted range.
Threshold: (HP < 20°C) < 5°C,
start/stop.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
Threshold: < 2K,
321
322
Circuit 3, Superheat T°, Too
Low.
The value calculed is outside of
the permitted range.
Circuit 3, Superheat T°, Too
High.
The value calculed is outside of
the permitted range.
Delayed: 6min,
Waiting stop: 6min,
Enabled: 6min after one
compressor start, then 3min
after one compressor or
condenser fan start/stop.
Threshold: (LP < 5°C) < 15K,
Threshold: (LP > 5°C) < 25K,
Delayed: 6min,
Waiting stop: 6min,
Enabled: 6min after one
compressor start, then 3min
after one compressor or
condenser fan start/stop.
Stop C3
compressors.
Stop C3
compressors.
3/day
3/day
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
#
#
Circuit 3, Subcooling, Too
323
324
327
Low.
The value calculed is outside of
the permitted range.
Circuit 3, Subcooling, Too
high.
The value calculed is outside of
the permitted range.
operating, (Max Operating
Press.).
The suction temperature
calculated by the LP pressure
sensor is outside of the
DC-DM-ROOFTOP-IOM-1801-E - 48 -
Threshold: < 0.6K,
Delayed: 6min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Threshold: > 16K,
Delayed: 6min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Threshold: (HP > 45/30°C) <
26/15°C,
Delayed: 6min,
Enabled: 3min after one
compressor or condenser fan
Signalling. Automatic
Signalling. Automatic
Signalling. Automatic
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
#
#
#
DS
MENU
Threshold: (HP < 35°C) < -
start/stop.
Circuit 3, High Pressure,
measured is incorrect.
Circuit 3, Low Pressure,
measured is incorrect.
Circuit 3, Liquid
measured is incorrect.
Circuit 3, Suction T°, Probe.
measured is incorrect.
CODE DESCRIPTION CONDITION EFFECT RESET POSSIBLE CAUSES POSSIBLE REMEDIES
328
329
341
342
343
344
Circuit 3 Compressor, LOP
operating, (Low Operating
Press.).
The suction temperature
calculated by the LP pressure
sensor is outside of the
permitted range.
Circuit 3 Compressor,
Condensing T°, Too High.
The temperature measured by
the probe is outside of the
permitted range.
Faulty Sensor.
The value of the sensor
Faulty Sensor.
The value of the sensor
Temperature, Probe.
The value of the sensor
The value of the sensor
25°C,
Threshold: (HP < 55°C) < -5°C,
Threshold: (HP > 65°C) <
12.5°C,
Delayed: 1min,
Enabled: 3min after one
compressor or condenser fan
Threshold: > 61°C,
Delayed: 20s,
Waiting stop: 6min,
Enabled: 3min after one
compressor or condenser fan
start/stop.
Delayed: 15s.
Delayed: 15s.
Delayed: 15s.
Delayed: 15s.
Signalling. Automatic
Signalling. Automatic
Stop C3
compressors.
Stop C3
compressors.
Stop C3
compressors.
Stop C3
compressors.
Automatic
Automatic
Automatic
Automatic
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Limit indoor/outdoor
temperature conditions,
• Refrigerant charge,
• Problem with the expansion
valve.
• Sensor failure,
• Problem with wiring of sensor.
• Sensor failure,
• Problem with wiring of sensor.
• Probe failure,
• Problem with wiring of probe.
• Probe failure,
• Problem with wiring of probe.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Wait normal tempetaure
conditions,
• Check the circuit operating,
• Replace the expansion valve.
• Check the sensor
• Check the wiring connections.
• Check the sensor
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
• Check the probe
• Check the wiring connections.
#
#
#
#
#
#
DC-DM-ROOFTOP-IOM-1801-E - 49 -
SALES OFFICES :
BELGIUM AND LUXEMBOURG POLAND
+ 32 3 633 3045 +351 229 066 050
+ 32 3 633 3045 +48 22 58 48 610
FRANCE PORTUGAL
+33 1 64 76 23 23 +7 495 626 56 53
+33 1 64 76 23 23 +351 229 066 050
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+49 (0) 211 950 79 600 +34 915 401 810
+49 (0) 211 950 79 60 +34 915 401 810
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+ 39 02 495 26 200 +38 044 585 59 10
+ 39 02 495 26 200 +38 044 585 59 10
NETHERLANDS UNITED KINGDOM AND IRELAND
+ 31 332 471 800 +44 1604 669 100
+ 31 332 471 800 +44 1604 669 100
+48 22 58 48 610
OTHER COUNTRIES :
LENNOX DISTRIBUTION
+33 4 72 23 20 20
LENNOX DISTRIBUTION
+33 4 72 23 20 20
Due to LENNOX EMEA ongoing commitment to quality, the specifi cations, ratings and
dimensions are subject to change without notice and without incurring liability.
Improper installation, adjustment, alteration, service or maintenance can cause property
damage or personal injury.
Installation and service must be performed by a qualifi ed installer and servicing agency.
www.lennoxemea.com
DC-DM-IOM-1801-E
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