LG
LG
AHU CONTROL KIT
Owner's Manual
Models: PRCKD20E
PRCKD40E
IMPORTANT
• Please read this installation manual completely
before installing the product.
• Installation work must be performed in
accordance with the national wiring standards
by authorized personnel only.
• Please retain this installation manual for future
reference after reading it thoroughly.
Download from Www.Somanuals.com. All Manuals Search And Download.
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
This symbol indicates the possibility of death or serious injury.
WARNING
This symbol indicates the possibility of injury or damage.
CAUTION
I Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
I Installation
System air conditioner can
only be installed by
specialized service provider
with air condition
installation certifications.
When moving or reinstalling
the air conditioner, please
contact the MULTI VTM AHU
installation service provider.
Do not disassemble, repair
or reconfigure the product
arbitrarily.
• Inappropriate installation can
cause leakage, fire and
electric shock.
• Inappropriate installation can
cause leakage, fire and
electric shock.
• It can cause a fire and electric
shock.
Do not store or use
flammable gas or volatile
substance near the air
conditioner.
Do not bend or damage the
power cable.
For the electric
construction, request for
service to the distributor or
the service center.
• It can cause a fire or an
electric shock.
• It can cause a fire or problem
to the product.
•
Arbitrary disassembly or repair
can cause a fire or an electric
shock.
Always ground the product.
When installing the product,
always install the electric
circuit breaker and the
exclusive switch.
Do not use damaged circuit
breaker or exclusive switch.
• If the product is not grounded
properly, it can cause an
electric shock.
• If they are not installed, it can
cause a fire or an electric
shock.
• It can cause a fire or an
electric shock.
Owner's Manual 3
Download from Www.Somanuals.com. All Manuals Search And Download.
Safety Precautions
When opening the box or
installing the product, be
careful of any sharp objects.
Use the fuse of rated
capacity.
For the product installation,
request for service to the
service center or the
installation service provider.
• It can cause an injury.
• It can cause a fire or an
electric shock.
•
It can cause a fire , an electric
shock, an explosion or an injury.
The electric construction
must be performed by an
electrician for electric
installation based on the
installation manual and
designated circuit diagram.
Use designated installation
material at the designated
location for the product
installation.
Do not install the product
outdoors.
• Use of inappropriate wire and
electric construction, can
result in an electric shock or
a fire. Technical standard for
electric equipment
I Operation
Do not let water get inside
(Controller) the product.
Especially do not wash the
product with water.
Do not leave the product
near a heating device.
Do not change or expend
the power cord arbitrarily.
• It can cause an electric shock
or a problem to the product.
• It can cause a fire.
• It can cause a fire or an
electric shock.
Use exclusive cable for the
product.
If you hear or smell a weird sound
or odor, or if you see smoke from
the product or if you experience a
power outage, pull down the main
power switch.
Do not put any heavy
objects on top of the power
cable.
• It can cause a fire or an
electric shock.
• If not, it can cause a fire or an
electric shock.
• It can cause a fire or an
electric shock.
Do not let the work or the
user get on top of the
product.
Do not use any heating devices
near the power cable.
Do not turn off the power
with the main power switch
while the product is
operating.
• He or she can fall over to get
injured.
• It can cause a fire or an
electric shock.
• It can cause a fire or an
electric shock.
Do not operate the switch
with wet hands.
If you are not planning to use the
product for a long period of time,
pull down the main power switch.
If the gas leaks, open the
window to ventilate the
room before operating the
product.
• It can cause a fire or an
electric shock.
• It can cause a fire or an
electric shock.
• It can cause an explosion or
a fire.
4 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Safety Precautions
Do not put containers with water on top of the product.
• If the water spills over, it can cause a fire or an electric shock.
CAUTION
I Operation
When installing the product,
make sure to level the
product.
Do not install the product at
a location where flammable
gas is leaking.
Do not carry the product by
yourself.
• It can cause vibration or
leakage.
• It can cause a fire or a
problem to the product.
• You can get injured by doing
so.
Owner's Manual 5
Download from Www.Somanuals.com. All Manuals Search And Download.
Necessary sensor by operating mode
Necessary sensor by operating mode
Operating mode
Necessary sensor
Function
- This runs indoor air conditioning.
-
Initial external air inlet setting is 30% of the air
supply during the air conditioning and this can be
changed by the user. But, when the damper actuator
is installed on AHU, the setting can be changed.
SA temperature sensor
RA temperature sensor
Air conditioning
- This runs the indoor heating.
-
Initial external air inlet setting is 30% of the air
supply during the heating and this can be changed
by the user. But, when the damper actuator is
installed on AHU, the setting can be changed.
SA temperature sensor
RA temperature sensor
Heating
-
-
This is the operating function to run indoor air
conditioning by controlling multiple outdoor units by
comparing the enthalpy of the indoor/outdoor air.
During the power save operation, the operation switches
between partial air conditioning operation (Controlling
multiple outdoor units) and external air conditioning
operation (Outdoor unit OFF, 100% external air flow).
This is operating function is mainly used in between
seasons. But if there is no OA temperature/humidity
sensor and RA temperature/humidity sensor on the
AHU, the power save operation cannot be selected.
SA temperature sensor
RA temperature sensor
OA temperature/
Power save
humidity sensor
Damper actuator
-
-
-
This is the operating function to remove the indoor
humidity when the humidity level indoor is excessive.
During the dehumidifier operation, the set value is
50%RH and the user cannot change this setting. But
if there is no OA temperature/humidity sensor and
RA temperature/humidity sensor on the AHU, the
dehumidifier operation cannot be selected.
SA temperature sensor
RA temperature sensor
OA temperature/
Dehumidify
humidity sensor
-
This is the operating function to control the humidity to
the set value by detecting the indoor humidity level.
SA temperature sensor
RA temperature sensor
- This can be selected during heating operation.
But if there is no humidifier/humidifying valve and
RA temperature/humidity sensor on the AHU, the
humidifier operation cannot be selected.
Humidification
-
This is the operating function to control the amount of
external air flow so that the CO2 level is controlled
within the set level by detecting the indoor CO2 level.
SA temperature sensor
RA temperature sensor
CO2 sensor
- The initial CO2 level is set to 1000ppm, and can
be changed by the user.
-
Auto ventilation
This function operates when auto ventilator
(Additional operation) is selected during air
conditioning or heating operation. But if there is no
CO2 sensor and damper actuator on the AHU, the
auto ventilator operation cannot be selected.
Damper actuator
- When the mixing temperature during the heating
operation is below the set value (5°C),
preheating device automatically operates. The
preheating device and mixing temperature
sensor must be installed on AHU for this to
operate automatically.
SA temperature sensor
RA temperature sensor
Mixing temperature/
humidity sensor
Preheating
6 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Part Description
Part Description
Name and Function of Remote Controller
1 OPERATION INDICATION
SCREEN
1
2
3
SET TEMPERATURE Button
WIRELESS REMOTE
CONTROLLER RECEIVER
• Some products don't receive the
wireless signals.
VENTILATION Button
OPERATION MODE SELECTION
Button
2
3
9
4
5
10
11
12
4
5
6
13
14
15
16
6
7
SUBFUNCTION Button
FUNCTION SETTING Button
7
8
8 EXIT Button
ON/ OFF Button
9
10
11
12
13
14
ROOM TEMPERATURE Button
RESET Button
FAN SPEED Button
AIR FLOW Button
RESERVATION/ TIME SETTING
Button
SETTING/ CANCEL Button
Please attach the inform label inside of the door.
Please choose proper language defend on your
country.
15
16
UP, DOWN, LEFT, RIGHT Button
•3/4/12/13 does not work.
•6 Additional operation button depends on the application of the sensor.
Owner's Manual 7
Download from Www.Somanuals.com. All Manuals Search And Download.
Basic operation of wired remote controller
Basic operation of wired remote controller
Press the Run/Stop button on the control
part of the remote controller to start the
operation.
1
Press the Operation Selection button to
set the operating mode (Heating/Cooling
etc.).
2
Press the Temperature Control button to
set the desired temperature below the
indoor temperature. (Based on air
conditioning operation)
3
(Example) Remote controller
display window
L Indoor
L Desired
temperature
temperature
During the initial operation, the
desired temperature is
automatically set below the indoor
temperature.
When you press the Run/Stop button
during use, the operation will stop.
4
8 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Main function of wired remote controller
Main function of wired remote controller
Every time you press the Run/Stop
button, the ON and OFF will be
repeated.
1
Every time you press the Operation Selection
button, it will change in the order of Air
Conditioner → Dehumidifier → Heater →
Power Save → Fan.
2
There are operating modes
that cannot be set depending
on the applied sensor.
<Air Conditioner>
<Dehumidifier>
<Heater>
<Power Save>
<Fan>
Owner's Manual 9
Download from Www.Somanuals.com. All Manuals Search And Download.
Main function of wired remote controller
Every time you press the Temperature
Control button and the Up/Down button,
the desired temperature will change.
Air Conditioner/Power Save:
3
18~30°C / Heater: 16~30°C
Dehumidifier/Fan:
Desired temperature cannot be changed
When you press the Indoor Temperature
button, the Return Temperature of AHU will
be displayed for about 5 seconds.
4
5
Current humidity / CO2 level
To check the current humidity, press the ‘Left’
button when the indoor
temperature is displayed and
the indoor humidity will be
displayed at Display ‘C’.
Function
Setting
Code
(Function set by code)
* Code 01: Current humidity
* Code 02: Current CO2 level
To check the current CO2 level,
press the ‘Right’ button when
the indoor temperature is
displayed and the current
CO2 level will be
: Current humidity
: Current CO2 level
(Example)
displayed at Display ‘C’.
<Current humidity: 50%>
<Current CO2 level: 1500ppm>
10 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Supplementary function of wired remote controller
Supplementary function of wired remote controller
Humidifier
Press the Additional Operation
button.
1
2
When the Humidifier icon
flashes in Display ‘B’, press the
Set/Cancel button to start the
humidifier.
B
When you press the OK/CLEAR
button one more time, the
humidifier will stop.
3
* Humidifier can only be set during heating
operation.
* Humidifier operation can only be used when the
humidifier is installed.
* The humidifier operation is controlled by the
desired temperature set.
Owner's Manual 11
Download from Www.Somanuals.com. All Manuals Search And Download.
Supplementary function of wired remote controller
Desired humidity control
Press the Function Setting
button.
1
Set the Function Code of
Display ‘C’ to 01.
2
3
C
Press the Up/Down button to set
the target humidity.
Press the OK/CLEAR button to
decide the desired humidity.
4
* Desired humidity can be controlled in the range
of 40~60% by 5% increment.
* Default humidity is set to 50%.
Display C: Desired humidity
Function
Setting
Code
(Function set by code)
* Code 01: Current humidity
: Desired humidity
(Example)
<Current humidity: 50%>
12 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Supplementary function of wired remote controller
Auto ventilaton
Press the Additional Operation
button.
1
A
When the Auto icon flashes in
Display ‘A’, press the OK/CLEAR
button to start the Auto Ventilator.
2
When you press the OK/CLEAR
button one more time, the Auto
Ventilator will be canceled and
return to the previous operating
condition.
3
* Auto Ventilator function can only be set during
the Air Conditioning/Heating operation.
Owner's Manual 13
Download from Www.Somanuals.com. All Manuals Search And Download.
Supplementary function of wired remote controller
2
Desired CO level control
Press the Additional Operation
button.
1
Set the Function Code of
Display ‘C’ to 02.
2
3
C
Press the Up/Down button to set
the target CO2 level.
Press the OK/CLEAR button to
set the target CO2 level.
4
* Desired CO2 level can be controlled in the range
of 500~1500ppm by 100ppm increment.
* Default humidity is set to 1000ppm.
Display C: CO2 level
Function
Setting
Code
(Function set by code)
* Code 02: Desired CO2 level
: Desired CO2 level
(Example)
<Desired CO2 level: 500ppm>
14 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Reservation function of wired remote controller
Reservation function of wired remote controller
Changing Current Time
Keep pressing
secs to enter Setting current
time mode.
button for 4
1
2
3
Ex) Changing Current Time as
'Monday / AM 10:20'.
Press
day.
key to adjust the current
Press
key to move to AM/ PM setting
mode (the 'AM/ PM segment will flash).
Setting AM/ PM value by
4
5
pressing
button.
Press
button to move to 'Hour'
setting mode. (the 'Hour' segment will
flash)
Setting Hour value by pressing
button.
6
Owner's Manual 15
Download from Www.Somanuals.com. All Manuals Search And Download.
Reservation function of wired remote controller
Press
button to move to 'Minute'
7
setting mode. (the 'Minute' segment will
flash)
Setting Minute value by pressing
button.
8
9
Press
button to finish.
In the process, press
button to release and exit
from setting mode.
10
(In case of exit with
incomplete information, it will
return to the previous setting )
16 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Reservation function of wired remote controller
Programming : Setting Simple Reservation
In case of there is not any reservation setup on system, it is possible to make a SIMPLE reservation
on indoor unit.
Press
Programming mode.
(the
button to enter the
1
2
segment flashing)
Ex) Setting Simple Reservation
time as '3'.
Press
reservation time.
button to adjust
Press
button to finish setting.
3
4
Adjusting the reservation time after finish
reservation setting will release the
previous one.
❊
If the indoor is ON, we can make the reservation for turning OFF. In reserve, if the indoor is OFF,
we can set the timer for turning ON. The reservation time is from 1 to 7 hours.
Owner's Manual 17
Download from Www.Somanuals.com. All Manuals Search And Download.
Reservation function of wired remote controller
Programming : Setting ON Reservation
This function is able to turn air conditioner ON after a setting time.
Press
button.
1
2
3
Ex) Setting ON Reservation
Time as 'AM 10:20'.
Repeat pressing
enter the ON reservation
setting mode.
button to
(
segment flashing)
Press
setting.
button to adjust AM/ PM
Press
button to Hour setting
4
mode. When the Hour icon flash, please
setting time.
The setting range is within 1~12.
Press
button to shift to Minute
5
6
setting mode. When the Minute icon
flash, please setting minute the setting
range is within 00~59.
Press
button to finish setting.
18 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Reservation function of wired remote controller
Programming : Setting OFF Reservation
This function is able to turn air conditioner OFF after a setting time.
Press
button.
1
2
3
Ex) Setting OFF Reservation
Time as 'AM 10:20'.
Repeat pressing
enter the OFF reservation
setting mode.
button to
(
segment flashing)
Press
setting.
button to adjust AM/ PM
Press
button to shift to Hour
4
setting mode. When the Hour icon flash,
please setting time.
The setting range is within 1~12.
Press
button to shift to Minute
5
6
setting mode. When the Minute icon
flash, please setting minute the setting
range is within 00~59.
Press
button to finish setting.
Owner's Manual 19
Download from Www.Somanuals.com. All Manuals Search And Download.
Reservation function of wired remote controller
Programming : Weekly Reservation
The weekly reservation is active after setting current time
Press programming button to enter
the Programming mode. Repeat
pressing button to select [Weekly
reservation].
1
(The segment will be flashed)
Ex) Setting one action as below.
- Day : TUE
- ON Time : 11:30 AM
- OFF Time : 12:30 PM
Press left, right button to adjust the
current day.
2
Press up, down button to adjust the
action number.
3
Press right button to move to 'Hour'
Part on ON Time section.
(The 'Hour' segment will be flashed)
4
Start Time Section
Press up, down button to adjust the
Hour on Start Time section.
5
6
Press right button to move to
'Minute' Part on Start time section.
(The 'Minute' segment will be
flashed)
20 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Reservation function of wired remote controller
Press up, down button to adjust the
Minute on Start Time section.
7
Press right button to move to 'Hour'
Part on OFF Time section.
(The 'Hour' segment will be flashed)
8
9
Off Time Section
Please refer the process from No.5
to No.7 for setting OFF Time. It is
same method.
If you finish the setting, press
10 setting/cancel button to complete
programming.
The under bar segment will be
created, when it finished.
Please refer the process from
11 No.2 to No.10 for setting other
day weekly program. It is same
method.
Press exit button to exit or system will
12 automatically release without any input after
25 seconds.
<Note>
Description of weekly reservation
<Start Time Section>
<Off Time Section>
Action
Start Time
Front
To
Off Time
❋ Two actions per weekday can be programmed, in total 14 actions
Owner's Manual 21
Download from Www.Somanuals.com. All Manuals Search And Download.
Reservation function of wired remote controller
Programming : Holiday Reservation
This function is to automatically stop the machine working on some days.
Press
button to enter the
1
2
reservation setting mode.
Repeat pressing
enter the holiday reservation
setting mode.
button to
(
segment flashing)
Press
holiday position.
button to move to
3
4
Press
button to set or
release a selected day as
holiday or not.
(❊ the holiday is indicated
with a underline)
If there is any holiday from
Monday to Sunday,
segment on LCD will be
displayed.
5
Press the
button to exit or if
6
7
there is not any input, system
will release any setting after 10
seconds.
It is possible to set the air conditioner
OFF in every "holiday"
( ex. 9:00, 10:00, 13:00 )
22 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Setting function of wired remote controller installation
Setting function of wired remote controller installation
How to start installation setting mode
Press the Function Setting button for
more than 3 seconds and the Code will
be displayed on Display ‘C’ to enter the
1
installation mode.
C
When you now press the Function
Setting button, the function code will
change.
2
Press the Up/Down button to change the
setting.
3
Press the Left/Right button to navigate
through the items.
4
Press the Set/Cancel button to complete
the setting.
5
Owner's Manual 23
Download from Www.Somanuals.com. All Manuals Search And Download.
Setting function of wired remote controller installation
Setting function by code
Code 10: Test run (AHU has no function)
Code 11: Central control address setting
Code 12: Damper opening setting
Code 13: Remote controller
Master/Slave setting
Display C: Installation setting display
Function
Code
Setting1
Setting2
24 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Setting function of wired remote controller installation
Central control address setting
Enter the Installation Setting mode.
1
2
Press the Function Setting button
repeatedly to reach function
code of ‘11’.
Flashes
Press the Right button to
move to ‘Setting of 1’.
3
4
Flashes
Press the Up/Down button
to set the central control
address.
Central
control
address
Press the Set/Cancel button
to complete the central
control address setting.
5
* This is the function to set the central control
address of AHU.
Display C: Installation setting display
Function
Code
Setting1
Setting2
Owner's Manual 25
Download from Www.Somanuals.com. All Manuals Search And Download.
Setting function of wired remote controller installation
Damper opening setting
Enter the Installation Setting mode.
1
C
Repeatedly press the Function Setting
button to reach function code of ‘12’.
2
Flashes
Press the Right button
to move to ‘Setting of 1’.
3
4
Flashes
Press the Up/Down button to set the value.
‘Setting of 1’ for each mode is as follows.
* Cooling mode [ ‘01’ (OA) /‘02’ (EA) / ‘03’
(Mixing)]
* Heating mode [ ‘04’ (OA) /
‘05’ (EA) / ‘06’ (Mixing)]
* Fan mode [ ‘07’ (OA) /
‘08’ (EA) / ‘09’ (Mixing)]
Cooling
OA damper
Heating OA
damper
Fan OA damper
Display C: Installation setting display
Function
Code
Setting1
Setting2
26 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Setting function of wired remote controller installation
Press the Right button to move to
‘Setting of 2’ by each mode.
5
Flashes
C
Press the Up/Down button to select the
damper opening.
The damper opening that can be set is
in the range of 1~91
6
degrees.
Air conditioning
external damper
opening of 40°
Heating external
damper opening
of 40°
Fan external
damper opening
of 40°
Press the OK/CLEAR button to complete
the setting.
7
* This is the function to set the damper opening
of AHU.
* This applies only to the site where the damper
actuator is installed.
Display C: Installation setting display
Function
Code
Setting1
Setting2
Owner's Manual 27
Download from Www.Somanuals.com. All Manuals Search And Download.
Setting function of wired remote controller installation
Remote control Master/Slave setting
Enter the Installation Setting mode.
1
2
3
C
Press the Function Setting button
repeatedly to reach function code of ‘13’.
Flashes
Press the Right button to move to
‘Setting of 1’.
Flashes
Press the Up/Down button to set the value.
Setting value of ‘01’ is
the Master and ‘00’
4
is the Slave.
Master
Slave
Press the OK/CLEAR button to
complete the setting.
5
* This is the function to set the mainly
used remote controller.
* You can set one remote controller as
the Master and the rest as Slave.
Display C: Installation setting display
Function
Code
Setting1
Setting2
28 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Manual operating mode
Manual operating mode
SA fan operation
When you set the SA Fan Switch to ON,
the SA fan will operate manually.
1
4
5
SA fan operating LED will be turned on.
2
3
3
When you set the SA Fan Switch to OFF,
the SA fan will stop operating and can
be operated automatically with the wired
remote controller.
2
1
* The SA switch of the control kit during AHU
operation with the wired remote controller
must be maintained at OFF condition.
(Operating LED)
(Selector switch)
RA fan operation
When you set the RA Fan Switch to ON,
1
the RA fan will operate manually.
RA fan operating LED
SA fan operating LED
Wired remote controller
SA fan switch
1
2
3
4
5
RA fan operating LED will be turned on.
2
3
When you set the RA Fan Switch to
OFF, the RA fan will stop operating and
can be operated automatically with the
wired remote controller.
RA fan switch
* The RA switch of the control kit during AHU
operation with the wired remote controller
must be maintained at OFF condition.
Owner's Manual 29
Download from Www.Somanuals.com. All Manuals Search And Download.
Check before requesting for service
Check before requesting for service
When there is a problem with the product, check the following detail before requesting for service to
the service center.
Symptom
Check
Action
The product does
not work at all.
* Is the main switch turned off? * Turn on the main power switch.
* Is there a power outage?
* Check the other electric appliances.
(If the power works, try operating the product again.)
* Request for service to the installation service provider or
the service center.
* The fuse inside the product
can be disconnected.
The cool air does not
flow continuously.
* Is the desired temperature set * Set the desired temperature to be lower than the indoor
higher than the indoor
temperature?
temperature.
* Is the product running in
Dehumidifier/Power save
mode?
* Change the operating mode to air conditioning.
I cannot set the
* Is the schedule properly set? * Refer to the manual and try setting up the schedule again.
scheduled operation.
* Did you check the current
time?
* If the current time is incorrect, try setting again.
AHU automatically
goes off.
* Is the OFF schedule set?
* Check the remote controller and cancel the OFF schedule.
30 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Test run
Test run
Self diagnosis function
Error display
I This function displays the self diagnosis and the type of error if identified.
I For the error display, the applicable code is displayed on the 7 segment LED on the wired remote
controller and AHU controller.
I If there are 2 or more errors simultaneously, the codes are displayed in the order of occurrence.
I Once you resolve the error, the error code will disappear.
Error display method
I The first display on the 7 segment display refers to the error code and the second part refers to the
location information of the communication PCB address or sensor location. Refer to the following for
details.
Error type
Display condition
CH [Error code] 0
Example of output
CH30
Detail description
Error #3
Basic error
Communication PCB error CH [Error code] [Address]
CH204
Error #2 in communication PCB with
address of ‘#4’
Sensor error
CH [Error code] [Location]
CH [Error code] [Address]
CH1302
Air supply temperature sensor error
Error #173 on the outdoor unit connected
to communication PCB with address of ‘#4’
Outdoor unit error
CH17304
* The address the communication PCB refers to the rotary switch number on the communication PCB.
Location number
Location name
Applicable sensor type
Temperature sensor, humidity sensor
Temperature sensor, humidity sensor
Temperature sensor, humidity sensor
Temperature sensor
01
02
03
04
05
06
RA
SA
OA
Mixing
Differential pressure
Static pressure
Differential pressure sensor
Static pressure sensor
* The above table shows the information of the attached location by sensor.
Owner's Manual 31
Download from Www.Somanuals.com. All Manuals Search And Download.
Test run
Error display (AHU)
I ‘##’ refers to the address information of the communication PCB.
Display
number
Error item
Cause of error
Cause or error
CH
2
## Temperature sensor
error at pipe inlet of
indoor unit
Communication PCB
rotary switch number
##
Temperature sensor disconnection or short circuit at pipe inlet
of indoor unit
CH
3
00 Communication error
between wired remote
controller and AHU
controller
No communication signal for more than 3 minutes from wired
remote controller to the AHU controller
-
CH
CH
4
5
## Communication error
between AHU
Communication PCB
rotary switch number
##
No communication signal for more than 3 minutes from
communication PCB to AHU controller
controller and
communication PCB
## Communication error
between
Communication PCB
rotary switch number
##
No communication signal for 5 minutes continuously from
communication PCB to outdoor unit
communication PCB
and outdoor unit
CH
CH
6
8
## Temperature sensor
error on pipe outlet of
indoor unit
Communication PCB
rotary switch number
##
Temperature sensor disconnection or short circuit on pipe
outlet of indoor unit
00 Emergency operation
-
The operating status of the smoke control mode through smoke detector is displayed
Temperature sensor (RA/SA/Mixing) disconnection/short
circuit/misconnection or when the sensor value is in the error
range
CH 13 01 Temperature sensor
RA
error
02
04
SA
Mixing
RA
SA
OA
-
CH 14 01 Humidity sensor error
Humidity sensor (RA/SA/OA) disconnection/short
circuit/misconnection or when the sensor value is in the error
range
CO2 sensor disconnection/short circuit/misconnection or when
the sensor value is in the error range
02
03
CH 15 00 CO2 sensor error
CH 16 05 Pressure sensor error
Differential pressure
Static pressure
Pressure sensor (Differential pressure, static pressure) disconnection/short
circuit/misconnection or when the sensor value is in the error range
Air flow sensor (RA, SA) disconnection/short circuit/misconnection
or when the sensor value is in the error range
06
CH 17 01 Air flow sensor error
02
RA
SA
32 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
Test run
Example of error
Situation
Error
Pipe inlet temperature sensor error (Communication PCB rotary switch number: 01)
Communication error between communication PCB and outdoor unit
(Communication PCB rotary switch number: 05)
SA duct temperature error
CH
CH
2
5
01
05
CH
CH
13 02
14 01
RA duct humidity error
Sequence of error
* The occurrence of error is displays in the order of 1
* Refer to page 43 for details of and 3 .
2
3
on 7 segment.
2
Refer to the MULTI V technical material for details on error code and checkpoints of the outdoor unit.
Owner's Manual 33
Download from Www.Somanuals.com. All Manuals Search And Download.
34 AHU CONTROL KIT
Download from Www.Somanuals.com. All Manuals Search And Download.
P/No.: MFL62171702
Printed in Korea
After reading this manual, keep it in a place easily accessible to the user for future reference.
Download from Www.Somanuals.com. All Manuals Search And Download.
|