LG | PRCKD21E.ENCXUAE | LG PRCKD21E.ENCXUAE Owner’s Manual

ENGLISH
OWNER’S MANUAL
AIR
CONDITIONER
Please read this manual carefully before operating your set and retain
it for future reference.
Applied(AHU)
Control Kit
www.lg.com
P/NO : MFL62171714
AHU CONTROL KIT Owner's Manual
TABLE OF CONTENTS
n Safety Precautions..............................................................3
n Necessary sensor by operating mode................................6
n Part Description...................................................................7
n Basic operation of wired remote controller .........................8
n Main function of wired remote controller ............................9
n Supplementary function of wired remote controller..........11
n Humidifier .......................................................................................11
n Desired humidity control.................................................................12
n Auto ventilation...............................................................................13
n Desired CO2 level control ...............................................................14
n Reservation function of wired remote controller...............15
n Changing Current Time.................................................................15
n Programming : Setting Simple Reservation .................................17
n Programming : Setting ON Reservation .......................................18
n Programming : Setting OFF Reservation .....................................19
n Programming : Weekly Reservation.............................................20
n Programming : Holiday Reservation.............................................22
n Setting function of wired remote controller installation.....23
n How to start installation setting mode...........................................23
n Setting function by code................................................................24
n Central control address setting .....................................................25
n Damper opening setting................................................................26
n Remote control Master/Slave setting............................................28
n Manual operating mode ....................................................29
n SA fan operation............................................................................29
n RA fan operation ...........................................................................29
n Inspect light operation ...................................................................30
n Check before requesting for service.................................31
n Test run..............................................................................32
n Self diagnosis function ..................................................................32
2 AHU CONTROL KIT
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
WARNING
This symbol indicates the possibility of death or serious injury.
CAUTION
This symbol indicates the possibility of injury or damage.
n Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
n Installation
System air conditioner can
only be installed by specialized service provider with
air condition installation certifications.
• Inappropriate installation can
cause leakage, fire and electric shock.
Do not store or use flammable gas or volatile substance
near the air conditioner.
• It can cause a fire or problem
to the product.
When moving or reinstalling
the air conditioner, please
contact the MULTI VTM AHU
installation service provider.
• Inappropriate installation can
cause leakage, fire and electric shock.
Do not bend or damage the
power cable.
• It can cause a fire or an electric shock.
Do not disassemble, repair
or reconfigure the product
arbitrarily.
• It can cause a fire and electric
shock.
For the electric construction, request for service to
the distributor or the service
center.
• 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
ENGLISH
Safety Precautions
Safety Precautions
When opening the box or installing the product, be careful of any sharp objects.
• It can cause an injury.
The electric construction
must be performed by an
electrician for electric installation based on the installation manual and designated
circuit diagram.
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 a fire or an electric shock.
• It can cause a fire , an electric
shock, an explosion or an injury.
Use designated installation
material at the designated
location for the product installation.
Do not install the product
outdoors.
Do not leave the product
near a heating device.
Do not change or expend
the power cord arbitrarily.
• Use of inappropriate wire and
electric construction, can result in an electric shock or a
fire. Technical standard for
electric equipment
n Operation
Do not let water get inside
(Controller) the product. Especially do not wash the
product with water.
• It can cause an electric shock
or a problem to the product.
Use exclusive cable for the
product.
• It can cause a fire or an electric shock.
Do not let the work or the
user get on top of the product.
• He or she can fall over to get
injured.
Do not operate the switch
with wet hands.
• It can cause a fire or an electric shock.
4 AHU CONTROL KIT
• It can cause a fire.
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.
• If not, it can cause a fire or an
electric shock.
• It can cause a fire or an electric shock.
Do not put any heavy objects on top of the power
cable.
• It can cause a fire or an electric shock.
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.
• It can cause a fire or an electric shock.
• It can cause a fire or an electric shock.
If you are not planning to use the
product for a long period of time,
pull down the main power switch.
• It can cause a fire or an electric shock.
If the gas leaks, open the
window to ventilate the
room before operating the
product.
• It can cause an explosion or
a fire.
Safety Precautions
ENGLISH
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
n Operation
When installing the product,
make sure to level the product.
• It can cause vibration or leakage.
Do not install the product at
a location where flammable
gas is leaking.
• It can cause a fire or a problem to the product.
Do not carry the product by
yourself.
• You can get injured by doing
so.
Owner's Manual 5
Necessary sensor by operating mode
Necessary sensor by operating mode
Operating mode
Necessary sensor
Function
Cooling
SA temperature sensor
RA temperature sensor
- This runs indoor cooling.
- 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.
Heating
SA temperature sensor
RA temperature sensor
- 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
OA temperature/
humidity sensor
Damper actuator
- 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 Energy saving operation, the operation switches
between partial air conditioning operation (Controlling multiple outdoor units) and fresh 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 energy saving operation cannot be selected.
SA temperature sensor
RA temperature sensor
Dehumidification
OA temperature/
humidity sensor
- This is the operating function to remove the indoor
humidity when the humidity level indoor is excessive.
- During the dehumidification 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 dehumidification operation cannot be selected.
SA temperature sensor
RA temperature sensor
- This is the operating function to control the humidity to
the set value by detecting the indoor humidity level.
- This can be selected during heating operation.
But if there is no humidifier/humidifying valve and
RA temperature/humidity sensor on the AHU, the
humidification operation cannot be selected.
Auto ventilation
SA temperature sensor
RA temperature sensor
CO2 sensor
Damper actuator
- 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.
- The initial CO2 level is set to 1000ppm, and can
be changed by the user.
- This function operates when auto ventilation operation (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 ventilation operation cannot be selected.
Preheating
SA temperature sensor
RA temperature sensor
Mixing temperature/
humidity sensor
- 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.
Energy saving
Humidification
6 AHU CONTROL KIT
Part Description
ENGLISH
Part Description
Name and Function of Remote Controller
1
2
3
9
5
10
11
12
6
13
7
14
8
15
4
16
Please attach the inform label inside of the door.
Please choose proper language defend on your
country.
1 OPERATION INDICATION
SCREEN
2 SET TEMPERATURE Button
3 WIRELESS REMOTE CONTROLLER RECEIVER
• Some products don't receive the
wireless signals.
4 VENTILATION Button
5 OPERATION MODE SELECTION
Button
6 SUBFUNCTION Button
7 FUNCTION SETTING Button
8 EXIT Button
9 ON/ OFF Button
10 ROOM TEMPERATURE Button
11 RESET Button
12 FAN SPEED Button
13 AIR FLOW Button
14 RESERVATION/ TIME SETTING
Button
15 SETTING/ CANCEL Button
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
Basic operation of wired remote controller
Basic operation of wired remote controller
the On/Off button on the control
1 Press
part of the remote controller to start the
operation.
the Operation Selection button to
2 Press
set the operating mode (Cooling/Heating
etc.).
the Temperature Control button to
3 Press
set the desired temperature below the
indoor temperature. (Based on air
conditioning operation)
(Example) Remote controller
display window
▲ Indoor
temperature
▲ Desired
temperature
During the initial operation, the
desired temperature is
automatically set below the indoor
temperature.
you press the On/Off button
4 When
during use, the operation will stop.
8 AHU CONTROL KIT
Main function of wired remote controller
time you press the On/Off button,
1 Every
the ON and OFF will be repeated.
time you press the Operation Selection
2 Every
button, it will change in the order of Cooling
ơDehumidification ơHeating ơEnergy
saving ơVentilation.
There are operating modes
that cannot be set depending
on the applied sensor.
<Cooling>
<Dehumidification>
<Heating>
<Energy saving>
<Ventilation>
Owner's Manual 9
ENGLISH
Main function of wired remote controller
Main function of wired remote controller
time you press the Temperature
3 Every
Control button and the Up/Down button,
the desired temperature will change.
Cooling/Energy saving:
20~30C / Heating: 16~30C
Dehumidification/Ventilation:
Desired temperature cannot be changed
you press the Indoor Temperature
4 When
button, the Return Temperature of AHU will
be displayed for about 5 seconds.
Current humidity / CO2 level
Function
Code
Setting
(Function set by code)
* Code 01: Current humidity
* Code 02: Current CO2 level
: Current humidity
: Current CO2 level
(Example)
<Current humidity: 50%>
<Current CO2 level: 1500ppm>
10 AHU CONTROL KIT
check the current humidity, press the ‘Left’
5 Tobutton
when the indoor
temperature is displayed and
the indoor humidity will be
displayed at Display ‘C’.
To check the current CO2 level,
press the ‘Right’ button when
the indoor temperature is
displayed and the current
CO2 level will be
displayed at Display ‘C’.
Supplementary function of wired remote controller
Humidifier
the Additional Operation
1 Press
button.
B
the Humidifier icon
2 When
flashes in Display ‘B’, press the
Set/Cancel button to start the
humidifier.
you press the OK/CLEAR
3 When
button one more time, the
humidifier will stop.
* Humidifier can only be set during heating operation.
* Humidification operation can only be used when
the humidifier is installed.
* The humidification operation is controlled by the
desired temperature set.
Owner's Manual 11
ENGLISH
Supplementary function of wired remote controller
Supplementary function of wired remote controller
Desired humidity control
the Function Setting
1 Press
button.
the Function Code of
2 Set
Display ‘C’ to 01.
C
the Up/Down button to set
3 Press
the target humidity.
the OK/CLEAR button to
4 Press
decide the desired humidity.
* 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
Code
Setting
(Function set by code)
* Code 01: Desired humidity
: Desired humidity
(Example)
<Desired humidity: 50%>
12 AHU CONTROL KIT
Supplementary function of wired remote controller
the Additional Operation
1 Press
button.
A
the Auto icon flashes in
2 When
Display ‘A’, press the OK/CLEAR
button to start the Auto Ventilator.
you press the OK/CLEAR
3 When
button one more time, the Auto
Ventilator will be canceled and
return to the previous operating
condition.
* Auto Ventilator function can only be set during
the Cooling/Heating operation.
Owner's Manual 13
ENGLISH
Auto ventilation
Supplementary function of wired remote controller
Desired CO 2 level control
the Additional Operation
1 Press
button.
C
the Function Code of
2 Set
Display ‘C’ to 02.
the Up/Down button to set
3 Press
the target CO level.
2
the OK/CLEAR button to
4 Press
set the target CO level.
2
* 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
Code
Setting
(Function set by code)
* Code 02: Desired CO2 level
: Desired CO2 level
(Example)
<Desired CO2 level: 500ppm>
14 AHU CONTROL KIT
Reservation function of wired remote controller
Changing Current Time
pressing
button for 4
1 Keep
secs to enter Setting current
time mode.
Ex) Changing Current Time as
'Monday / AM 10:20'.
2 Press
day.
key to adjust the current
key to move to AM/ PM setting
3 Press
mode (the 'AM/ PM segment will flash).
AM/ PM value by
4 Setting
pressing
button.
button to move to 'Hour'
5 Press
setting mode. (the 'Hour' segment will
flash)
Hour value by pressing
6 Setting
button.
Owner's Manual 15
ENGLISH
Reservation function of wired remote controller
Reservation function of wired remote controller
button to move to 'Minute'
7 Press
setting mode. (the 'Minute' segment will
flash)
Minute value by pressing
8 Setting
button.
9 Press
10
16 AHU CONTROL KIT
button to finish.
In the process, press
button to release and exit
from setting mode.
(In case of exit with
incomplete information, it will
return to the previous setting )
Reservation function of wired remote controller
In case of there is not any reservation setup on system, it is possible to make a SIMPLE reservation
on indoor unit.
button to enter the
1 Press
Programming mode.
(the
segment flashing)
Ex) Setting Simple Reservation
time as '3'.
button to adjust
2 Press
reservation time.
3 Press
button to finish setting.
the reservation time after finish
4 Adjusting
reservation setting will release the
previous one.
j 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
ENGLISH
Programming : Setting Simple Reservation
Reservation function of wired remote controller
Programming : Setting ON Reservation
This function is able to turn air conditioner ON after a setting time.
1 Press
button.
Ex) Setting ON Reservation
Time as 'AM 10:20'.
pressing
button to
2 Repeat
enter the ON reservation
setting mode.
(
segment flashing)
3 Press
setting.
button to adjust AM/ PM
button to Hour setting
4 Press
mode. When the Hour icon flash, please
setting time.
The setting range is within 1~12.
button to shift to Minute
5 Press
setting mode. When the Minute icon
flash, please setting minute the setting
range is within 00~59.
6 Press
18 AHU CONTROL KIT
button to finish setting.
Reservation function of wired remote controller
This function is able to turn air conditioner OFF after a setting time.
1 Press
button.
Ex) Setting OFF Reservation
Time as 'AM 10:20'.
pressing
button to
2 Repeat
enter the OFF reservation
setting mode.
(
segment flashing)
3 Press
setting.
button to adjust AM/ PM
button to shift to Hour
4 Press
setting mode. When the Hour icon flash,
please setting time.
The setting range is within 1~12.
button to shift to Minute
5 Press
setting mode. When the Minute icon
flash, please setting minute the setting
range is within 00~59.
6 Press
button to finish setting.
Owner's Manual 19
ENGLISH
Programming : Setting OFF Reservation
Reservation function of wired remote controller
Programming : Weekly Reservation
The weekly reservation is active after setting current time
programming button to enter
1 Press
the Programming mode. Repeat
pressing button to select [Weekly
reservation].
(The segment will be flashed)
Ex) Setting one action as below.
- Day : TUE
- ON Time : 11:30 AM
- OFF Time : 12:30 PM
left, right button to adjust the
2 Press
current day.
up, down button to adjust the
3 Press
action number.
right button to move to 'Hour'
4 Press
Part on ON Time section.
(The 'Hour' segment will be flashed)
Start Time Section
up, down button to adjust the
5 Press
Hour on Start Time section.
right button to move to
6 Press
'Minute' Part on Start time section.
(The 'Minute' segment will be
flashed)
20 AHU CONTROL KIT
Reservation function of wired remote controller
ENGLISH
up, down button to adjust the
7 Press
Minute on Start Time section.
right button to move to 'Hour'
8 Press
Part on OFF Time section.
(The 'Hour' segment will be flashed)
Off Time Section
refer the process from No.5
9 Please
to No.7 for setting OFF Time. It is
same method.
you finish the setting, press
10 Ifsetting/cancel
button to complete
programming.
The under bar segment will be
created, when it finished.
11
Please refer the process from
No.2 to No.10 for setting other
day weekly program. It is same
method.
exit button to exit or system will
12 Press
automatically release without any input after
25 seconds.
<Note>
Description of weekly reservation
<Start Time Section>
<Off Time Section>
Action
To
Off Time
Start Time
Front
❋ Two actions per weekday can be programmed, in total 14 actions
Owner's Manual 21
Reservation function of wired remote controller
Programming : Holiday Reservation
This function is to automatically stop the machine working on some days.
button to enter the
1 Press
reservation setting mode.
pressing
button to
2 Repeat
enter the holiday reservation
setting mode.
(
segment flashing)
button to move to
3 Press
holiday position.
button to set or
4 Press
release a selected day as
holiday or not.
(❊ the holiday is indicated
with a underline)
there is any holiday from
5 IfMonday
to Sunday,
segment on LCD will be
displayed.
the
button to exit or if
6 Press
there is not any input, system
will release any setting after 10
seconds.
is possible to set the air conditioner
7 ItOFF
in every "holiday"
( ex. 9:00, 10:00, 13:00 )
22 AHU CONTROL KIT
Setting function of wired remote controller installation
How to start installation setting mode
the Function Setting button for
1 Press
more than 3 seconds and the Code will
be displayed on Display ‘C’ to enter the
installation mode.
C
you now press the Function
2 When
Setting button, the function code will
change.
the Up/Down button to change the
3 Press
setting.
the Left/Right button to navigate
4 Press
through the items.
the Set/Cancel button to complete
5 Press
the setting.
Owner's Manual 23
ENGLISH
Setting function of wired remote controller installation
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
24 AHU CONTROL KIT
Setting2
Setting function of wired remote controller installation
ENGLISH
Central control address setting
1 Enter the Installation Setting mode.
the Function Setting button
2 Press
repeatedly to reach function
code of ‘11’.
Flashes
the Right button to
3 Press
move to ‘Setting of 1’.
Flashes
the Up/Down button
4 Press
to set the central control
address.
Central
control
address
the Set/Cancel button
5 Press
to complete the central
control address setting.
* 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
Setting function of wired remote controller installation
Damper opening setting
1Enter the Installation Setting mode.
C
press the Function Setting
2 Repeatedly
button to reach function code of ‘12’.
Flashes
the Right button
3 Press
to move to ‘Setting of 1’.
Flashes
the Up/Down button to set the value.
4 Press
‘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
26 AHU CONTROL KIT
Setting1
Setting2
Setting function of wired remote controller installation
Flashes
C
the Up/Down button to select the
6 Press
damper opening.
The damper opening that can be set is
in the range of 1~91
degrees.
Cooling
external damper
opening of 40
Heating external
damper opening
of 40
Fan external
damper opening
of 40
the OK/CLEAR button to complete
7 Press
the setting.
* 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
ENGLISH
the Right button to move to
5 Press
‘Setting of 2’ by each mode.
Setting function of wired remote controller installation
Remote control Master/Slave setting
1 Enter the Installation Setting mode.
C
the Function Setting button
2 Press
repeatedly to reach function code of ‘13’.
Flashes
the Right button to move to
3 Press
‘Setting of 1’.
Flashes
the Up/Down button to set the value.
4 Press
Setting value of ‘01’ is
the Master and ‘00’
is the Slave.
Master
Slave
the OK/CLEAR button to
5 Press
complete the setting.
* 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
28 AHU CONTROL KIT
Setting1
Setting2
Manual operating mode
ENGLISH
Manual operating mode
SA fan operation
1
you set the SA Fan Switch to ON,
1 When
the SA fan will operate manually.
Supply Fan
MAN. AUOT
2
3
4
2 SA fan operating LED will be turned on.
5
6
7
8
Power
Supply
Fan
Return
Fan
Inspect
Light
you set the SA Fan Switch to
3 When
OFF, the SA fan will stop operating and
can be operated automatically with the
wired remote controller.
Supply Fan
MAN. AUOT
* The SA switch of the control kit during AHU
operation with the wired remote controller
must be maintained at OFF condition.
(Operating LED)
RA fan operation
Supply Fan
MAN. AUOT
Return Fan
MAN. AUOT
Inspect Light
ON
OFF
(Selector switch)
1 Vents (Left, Light)
2 SA fan operating LED
you set the RA Fan Switch to ON,
1 When
the RA fan will operate manually.
Return Fan
MAN. AUOT
2 RA fan operating LED will be turned on.
3 Inspect Light LED
4 RA fan operating LED
5 Wired remote controller
6 SA fan switch
you set the RA Fan Switch to
3 When
OFF, the RA fan will stop operating and
can be operated automatically with the
wired remote controller.
Return Fan
MAN. AUOT
7 Inspect Light switch
8 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
Manual operating mode
Inspect light operation
you set the Inspect Light switch to ON, the Inspect Light
1 When
will lights up
Inspect Light
ON
OFF
2 Inspect Light LED will be turned on.
you set the Inspect Light switch to OFF, the Inspect Light will stop
3 When
operating and can be operated automatically with the wired remote
controller.
* The Inspect Light switch of the control kit during AHU operation with the wired
remote controller must be maintained at OFF condition.
30 AHU CONTROL KIT
Inspect Light
ON
OFF
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
The product does
not work at all.
The cool air does not
flow continuously.
I cannot set the
scheduled operation.
AHU automatically
goes off.
Check
Action
* 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 fuse inside the product
the service center.
can be disconnected.
* Is the desired temperature set * Set the desired temperature to be lower than the indoor
higher than the indoor temtemperature.
perature?
* Is the product running in De- * Change the operating mode to air conditioning.
humidifier/Power save mode?
* Is the schedule properly set?
* Refer to the manual and try setting up the schedule again.
* Did you check the current
* If the current time is incorrect, try setting again.
time?
* Is the OFF schedule set?
* Check the remote controller and cancel the OFF schedule.
Owner's Manual 31
ENGLISH
Check before requesting for service
Test run
Test run
Self diagnosis function
Error display
n This function displays the self diagnosis and the type of error if identified.
n For the error display, the applicable code is displayed on the 7 segment LED on the wired remote
controller and AHU controller.
n If there are 2 or more errors simultaneously, the codes are displayed in the order of occurrence.
n Once you resolve the error, the error code will disappear.
Error display method
n 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
Example of output
Detail description
Basic error
CH [Error code] 0
CH30
Error #3
Communication PCB error
CH [Error code] [Address]
CH204
Error #2 in communication PCB with
address of ‘#4’
Sensor error
CH [Error code] [Location]
CH1302
Air supply temperature sensor error
Outdoor unit error
CH [Error code] [Address]
CH17304
Error #173 on the outdoor unit connected
to communication PCB with address of ‘#4’
* The address the communication PCB refers to the rotary switch number on the communication PCB.
Location number
Location name
Applicable sensor type
01
RA
Temperature sensor, humidity sensor
02
SA
Temperature sensor, humidity sensor
03
OA
Temperature sensor, humidity sensor
04
Mixing
Temperature sensor
05
Differential pressure
Differential pressure sensor
06
Static pressure
Static pressure sensor
* The above table shows the information of the attached location by sensor.
32 AHU CONTROL KIT
Test run
ENGLISH
Error display (AHU)
n ‘##’ refers to the address information of the communication PCB.
Display
number
Error item
CH 2 ## Temperature sensor
error at pipe inlet of indoor unit
CH 3 00 Communication error
between wired remote
controller and AHU
controller
CH 4 ## Communication error
between AHU controller and communication PCB
CH 5 ## Communication error
between communication PCB and outdoor
unit
CH 6 ## Temperature sensor
error on pipe outlet of
indoor unit
CH 8 00 Emergency operation
CH 13 01 Temperature sensor
error
02
04
CH 14 01 Humidity sensor error
02
03
CH 15 00 CO2 sensor error
CH 16 05 Pressure sensor error
06
CH 17 01 Air flow sensor error
02
Cause of error
Cause or error
Communication PCB
rotary switch number
##
Temperature sensor disconnection or short circuit at pipe inlet
of indoor unit
-
No communication signal for more than 3 minutes from wired
remote controller to the AHU controller
Communication PCB
rotary switch number
##
No communication signal for more than 3 minutes from communication PCB to AHU controller
Communication PCB
rotary switch number
##
No communication signal for 5 minutes continuously from
communication PCB to outdoor unit
Communication PCB
rotary switch number
##
RA
Temperature sensor disconnection or short circuit on pipe outlet of indoor unit
SA
Mixing
RA
SA
OA
Differential pressure
Static pressure
RA
SA
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
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
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
Owner's Manual 33
Test run
Example of error
Situation
Error
Pipe inlet temperature sensor error (Communication PCB rotary switch number: 01)
CH → 2 → 01
Communication error between communication PCB and outdoor unit
CH → 5 → 05
(Communication PCB rotary switch number: 05)
SA duct temperature error
CH → 13→ 02
RA duct humidity error
CH → 14→ 01
Sequence of error
* The occurrence of error is displays in the order of 1 → 2 → 3 on 7 segment.
* Refer to page 43 for details of 2 and 3 .
Refer to the MULTI V technical material for details on error code and checkpoints of the outdoor unit.
34 AHU CONTROL KIT
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