Alpic Air AWMI-22VRDC1C User manual

Installation Manual
Original Instructions
Commercial Air Conditioners
Multi Variable Air Conditioners
Wall Mounted Type Indoor Unit

To Users
Thank you for selecting our product. Please read this instruction manual carefully
before installing and using the product, so as to master and correctly use the product. In order
to guide you to correctly install and use our product and achieve expected operating effect, we
hereby instruct as below:
(1) This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsibility for their safety. Children should be supervised to ensure that
they do not play with the appliance.
(2) In order to ensure reliability of product, the product may consume some power under
stand-by status for maintaining normal communication of system and preheating
refrigerant and lubricant. If the product is not to be used for long, cut off the power
supply; please energize and preheat the unit in advance before reusing it.
(3) Please properly select the model according to actual using environment, otherwise it
may impact the using convenience.
(4) This product has gone through strict inspection and operational test before leaving the
factory. In order to avoid damage due to improper disassembly and inspection, which
may impact the normal operation of unit, please do not disassemble the unit by
yourself. You can contact with the special maintenance center of our company if
necessary.
(5) When the product is faulted and cannot be operated, please contact with our
maintenance center as soon as possible by providing the following information.
1)Contents of nameplate of product (model, cooling/heating capacity, product No.,
ex-factory date).
2)Malfunction status (specify the situations before and after the error occurs).
(6) All the illustrations and information in the instruction manual are only for reference. In
order to make the product better, we will continuously conduct improvement and
innovation. We have the right to make necessary revision to the product from time to
time due to the reason of sales or production, and reserve the right to revise the
contents without further notice.
(7) The final right to interpret for this instruction manual belongs to 󳃭󳿪󳋢󳣳
$/3,&$,5

Exception Clauses
Manufacturer will bear no responsibilities when personal injury or property loss is caused
by the following reasons:
(1) Damage the product due to improper use or misuse of the product;
(2) Alter, change, maintain or use the product with other equipment without abiding by the
instruction manual of manufacturer;
(3) After verification, the defect of product is directly caused by corrosive gas;
(4) After verification, defects are due to improper operation during transportation of
product;
(5) Operate, repair, maintain the unit without abiding by instruction manual or related
regulations;
(6) After verification, the problem or dispute is caused by the quality specification or
performance of parts and components that produced by other manufacturers;
(7) The damage is caused by natural calamities, bad using environment or force majeure.

Contents
1 Safety Notices (Please be sure to abide )........................................................................... 1
2 Product Introduction........................................................................................................... 3
2.1 Outline of the Unit and Main Parts.......................................................................................3
2.2 Rated Operating Condition..................................................................................................4
3 Preparations for Installation................................................................................................ 4
3.1 Location for Installation........................................................................................................4
3.2 Schematic diagram of installation spaces............................................................................4
3.3 Requirements for Communication Line ...............................................................................5
3.4 Wiring Requirements............................................................................................................6
4 Installation Instructions....................................................................................................... 7
4.1 Installation of Indoor Unit.....................................................................................................7
4.2 The installation of the rear panel..........................................................................................7
4.3 Preparation of the piping hole..............................................................................................8
4.4 Installation of the drainage pipe...........................................................................................8
4.5 Installation the connection pipes..........................................................................................8
5 Wiring Work........................................................................................................................ 9
5.1 Connect Cables and Terminals of Wiring Board..................................................................9
5.2 Power Cord Connection.....................................................................................................10
5.3 Connection of Communication Line of IDU and ODU.......................................................10
5.4 Connection of Communication Line of Wired Controller ...................................................11
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network.......................11
5.6 Installation of the indoor unit..............................................................................................12
5.7 Connection of external water pump...................................................................................12
6 The Best Usage Method....................................................................................................14
7 Maintenance Method.........................................................................................................14
7.1 Cleaning panel...................................................................................................................15
7.2 Cleaning the air filters........................................................................................................15
7.3 Check before the usage season........................................................................................16
7.4 Check after the usage season...........................................................................................16
8 Table of Error Codes for Indoor Unit..................................................................................16
9 Malfunction Analyzing........................................................................................................16
9.1 Service center....................................................................................................................17
9.2 After-sales service..............................................................................................................17
10 Adjusting Method Of The Air Direction.............................................................................18
10.1 Adjusting air direction up and down.................................................................................18
10.2 Adjusting air direction left and right..................................................................................18

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
1
1 Safety Notices (Please be sure to abide )
Warning: If not abide strictly, it may cause severe damage to the unit or the people.
Note: If not abide strictly, it may cause slight or medium damage to the unit or the
people.
This sign indicates that the operation must be prohibited. Improper operation may
cause severe damage or death to people.
This sign indicates that the items must be observed. Improper operation may cause
damage to people or property.
Warning!
This product can’t be installed at corrosive , inflammable or explosive environment or
the place with special requirements, such as kitchen. Otherwise, it will affect the normal
operation or shorten the service life of the unit, or even cause fire hazard or serious injury.
As for above special places, please adopt special air conditioner with anti-corrosive or
anti-explosion function .
Note:
(1) For evaporating units and condensing units, the instructions or markings shall include
wording to assure that the maximum operating pressure is considered when
connecting to any condenser unit or evaporator unit.
(2) For evaporating units, condensing units and condenser units, the instructions or
markings shall include refrigerant charging instructions.
(3) A warning to assure that partial units shall only be connected to an appliance suitable
for the same refrigerant.
(4) This unit is a partial unit air conditioner, complying with partial unit requirements of this
International Standard, and must only be connected to other units that have been
confirmed as complying to corresponding partial unit requirements of this
International Standard.
(5) The electrical interfaces shall be specified with purpose, voltage, current, and safety
class of construction.
Follow this instruction to
complete the installation work.
Please carefull read this manual
before unit startup and service.
Installation should be conducted by
dealer or qualified personnel. Please
do not attempt to install the unit by
yourself. Improper handling may
result in waterleakage, electric
shock or fire disaster etc.
Before installation,please
check if the power supply
is in accordance with the
requirements specified on
the nameplate.And also
take care of the power safety.
Make sure the unit can be earthed
properly and soundly after plugging
into the socket so as to avoid
electric shock. Please do not
connect the ground wire to gas
pipe, water pipe, lightning rod or
telephoneline.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
2
Be sure to use the exclusive
accessory and part to prevent
the water leakage, electric
shock and fire accidents.
If refrigerant leakage happens
during installation, please
ventilate immediately. Poisonous
gas will emerge if the
refrigerant gas meets fire.
Wire size of power cord
should be large enough.
The damaged power cord and
connection wire should be
replaced by exclusive cable.
After connecting the power cord,
please fix the electric box cover
properly in order to avoid accident.
Never fail to comply with
the nitrigen charge
requirements.Charge
nitrogen when welding
pipes.
Never short-circiut or cancel
the pressure switch to prevent
unit damage.
Please firstly connect the wired
controller before
energization,otherwise
wired controller can not be used.
Before using the unit, please
check if the piping and wiring
are correct to avoid water
leakage,refrigerant leakage,
electric shock, or fire etc.
Do not insert fingers or
objects into air outlet/inlet grille.
Open the door and window and
keep good ventilation in the room
to avoid oxygen deficit when the
gas/oil supplied heating equipment
is used.
Never start up or shut off the air
conditioner by means of directly
plug or unplug the power cord.
Turn off the unit after it runs at
least five minutes; otherwise it will
influence oil return of the
compressor.
Do not allow children
operate this unit.
Do not operate this unit with wet
hands.
Turn off the unit or cut off the
power supply before cleaning
the unit, otherwise electric
shock or injury may happen.
Never spray or flush water towards
unit, otherwise malfunction or
electric shock may happen.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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Do not expose the unit to the
moist or corrosive
circumstances.
Electrify the unit 8 hours
before operation. Please
switch on for 8 hours before
operation. Do not cut off the
power when 24 hours short-time
halting (to protect the compressor).
Volatile liquid, such as
diluent or gas will damage the
unit appearance.Only use soft
cloth with a little neutral
detergent to clean the outer
casing of unit.
Under cooling mode, please don't
set the room temperature too low
and keep the temperature
difference between indoor and
outdoor unit within 5.
If anything abnormal happens
(such as burning smell), lease
power off the unit and cut off the
main power supply, and then
immerdiately contact
appointed service center.If
abnormality keeps going, the
unit might be damaged and lead
to electric shock or fire.
User is not allowed to repair the
unit. Fault service may cause
electric shock or fire accidents.
Please contact 󳃭󳿪󳋢󳣳 appointed
service center for help.
Any personal injury or property loss caused by improper installation, improper debug,
unnecessary repair or not following the instructions of this manual should not be the
responsibility of 󰾡 .
2 Product Introduction
2.1 Outline of the Unit and Main Parts
Note：
The appearances will be different by the different models of air conditioners.
No.
Part Name
No.
Part Name
①
Surface panel
④
Guide louver
②
Filter
⑤
Drain pipe
③
Wiring cover
$/3,&$,5
$/3,&$,5
$/3,&$,5

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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2.2 Rated Operating Condition
Item
Indoor Condition
Outdoor Condition
DBTemperature°C
WBTemperature°C
DBTemperature°C
WBTemperature°C
Rated Cooling
27
19
35
24
Rated Heating
20
15
7
6
3 Preparations for Installation
3.1 Location for Installation
(1) The appliance shall not be installed in the laundry.
(2) The indoor unit should be installed at 2.5m or higher above the floor.
(3) The top holder must be strong enough to support unit’s weight.
(4) Drain pipe can drain water out easily.
(5) There is no obstacle at inlet or outlet. Please ensure good air circulation.
(6) Keep the unit away from heating source, inflammable gas or smoke.
3.2 Schematic diagram of installation spaces
Notes:
①The unit shall be installed by the professional personnel according to this installation
instruction to ensure proper use.
②Please contact the local $/3,&$,5 appointed service center before installation. Any
malfunctioncaused by the unit that is not installed by the $/3,&$,5 appointed service
center would probably not be dealt with on time because of the inconvenience of the
business contact.
③It should be guided under the professional personnel when the air conditioner unit is
moved to other place.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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④Maintenance/service to be done by specialized personnel,mandated by the
manufacturer or authorized representative.
⑤This appliance is intended to be used by expert or trained users in shops,in
lightindustry and on farms,or for commercial use by lay persons.
⑥This unit is a partial unit air conditioner,complying with partial unit requirements of this
International Standard,and must only be connected to other units that have been
confirmed as complying to corresponding partial unit requirements of this International
Standard.
⑦This unit shall only be connected to an appliance suitable for the same refrigerant.
3.3 Requirements for Communication Line
Note:
If the unit is installed in the place with strong electromagnetic interference, shielded
wire must be applied on the communication wire between indoor unit and wired controller.
Twisted pair line with shielding function must be applied on the communication wire
between indoor unit and indoor unit (outdoor unit).
3.3.1 Select communication line for indoor unit and wired controller
Fig 3.3.1
Material type
Total length of
communication line
between indoor unit and
wired controller L (m/feet)
Wire size
(mm2/AWG)
Material
Standard
Remarks
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤250m
(L≤820-1/5feet)
2×0.75~2×1.
25
(2×AWG18~
2×AWG16)
IEC
60227-5-20
07
1.Total length of communication line
can't exceed 250m (820-1/5feet).
2.The cord shall be Circular cord (the
cores shall be twisted together).
3.If unit is installed in places with
intense magnetic field or strong
interference, it is necessary to use
shielded wire.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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3.3.2 Select communication line for indoor unit and indoor unit (outdoor unit)
Fig 3.3.2
Material Type
Total Length L (m/feet) of
Communication Cable
between Indoor Unit and
Indoor (Outdoor) Unit
Wire size
(mm2/AWG)
Material
Standard
Remarks
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤1000m
(L≤3280-5/6feet)
≥2×0.75
(≥2×AWG18)
IEC
60227-5-20
07
1. If the wire diameter is enlarged to
2×1 mm2(2×AWG16), the total
communication line length can reach
1500 m (4921-1/4feet).
2. The cord shall be Circular cord (the
cores shall be twisted together).
3. If unit is installed in places with
intense magnetic field or strong
interference, it is necessary to use
shielded wire.
3.4 Wiring Requirements
Model
Power Cord
Size
Air Switch
apacity
(A)
Minimum
Sectional Area
of Ground
Wire(mm2)
Minimum
Sectional Area
of Power
Cord(mm2)
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$:0,95'&
220-240V ~
50Hz
208~230V ~
60Hz
6
1
1
Notes:
①Use copper wire only as unit’s power cord. Operating temperature should be within its
rated value.
②If the power cord is more than 15m long, please increase properly the sectional area
of power cord to avoid overload, which may cause accident.
③Above selection requirements: Power cord size is based on BV single-core wire
(2~4pc) at 40°Cambient temperature when laying across plastic pipe. Air switch is D
type and used at 40°C. If actual installation condition varies, please lower the capacity

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
7
appropriately according to the specifications of power cord and air switch provided
by manufacturer.
④If the supply cord is damaged, it must be replaced by the manufacturer or its service
agent or a similarly qualified person in order to avoid a hazard.
⑤Install cut-off device near the unit. The minimum distance between each stage of
cut-off device should be 3mm(The same for both indoor unit and outdoor unit).
4 Installation Instructions
4.1 Installation of Indoor Unit
Fig 4.1
Below are dimensions of W, H, D for different models:
Unit: mm
Item
Model
W
H
D
845
289
209
970
300
224
1078
325
246
1350
326
258
4.2 The installation of the rear panel
Fig 4.2
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Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
8
①Find the horizontal position by the seton method; since the drainage pipe is on the left
side, it is necessary to adjust the rear panel to make its left side a little bit lower.
②Fix the rear panel on the wall by bolts.
③After installing the rear panel, pull it by hands to check if it is secured enough. The
hang panel should support the weight of an adult (60kg), and the weight shared by
every bolt should be fairly even.
④The diameter showed in Fig.4.2 is 65mm.
4.3 Preparation of the piping hole
(1) Make the piping hole (Φ 65mm) in the wall at a slight downward slant to the outdoor
side. The center of the hole should be determined referring to Fig.4.2.
(2) Insert the piping-hole sleeve into the hole to prevent the connected piping and wiring
from being damaged when passing through the hole.
4.4 Installation of the drainage pipe
(1) For proper draining, the drain hose should be placed at a downward sloping.
(2) Do not wrench or bend the drain hose or flood its end by water. (Fig.4.4)
(3) Wrap the drain hose with heat resistant material.
(4) It is not allowed to connect the condensate drain pipe into waste pipe or other
pipelines which are likely to produce corrosive or peculiar smell to prevent the smell
from entering indoors or corrupt the unit.
(5) It is not allowed to connect the condensate drain pipe into rain pipe to prevent rain
water from pouring in and cause property loss or personal injury.
(6) Condensate drain pipe should be connected into special drain system for air
conditioner.
Fig 4.4
4.5 Installation the connection pipes
Connect the ends of the connection pipe with two leading pipes, and then tighten the
joint nuts tightly.
Connect the connect pipe with the two relative leading pipe, tie the nut on tie –in of the
connect pipe tightly.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
9
Notes:
①Be careful in bending the connection pipes, or you would damage the pipes.
②If the tightening torque for the flare nut is too great, leakage would happen.
5 Wiring Work
Warning!
Before obtaining access to terminals, all supply circuits must be disconnected.
Notes:
①Units must be earthed securely, or it may cause electric shock.
②Please carefully read the wiring diagram before carry out the wiring work, incorrect
wiring could cause malfunction or even damage the unit.
③The unit should be powered by independent circuit and specific socket.
④The wiring should be in accordance with related regulations in order to ensure the
units reliable running.
⑤Install circuit breaker for branch circuit according to related regulations and electrical
standards.
⑥Keep cable away from refrigerant pipings, compressor and fan motor.
⑦The communication wires should be separated from power cord and connection wire
between indoor unit and outdoor unit.
⑧Adjust the static pressure via wired controller according to site circumstance.
5.1 Connect Cables and Terminals of Wiring Board
Connection of Wire and Patch Board Terminal
(1) The connection of wire (as shown in fig 5.1.1).
1) Strip about 25mm insulation of the wire end by stripping and cutting tool.
2) Remove the wiring screws on the terminal board.
3) Shape the tail of wire into ring by needle nose plier, and keep the gauge of ring in
accordance with screw.
4) Use the screwdriver for tightening the terminal.
(2) The connection of stranded wire (as shown in fig 5.1.2).
1) Strip about 10mm insulation of the end of stranded wire by stripping and cutting tool.
2) Loosen the wiring screws on terminal board.
3) Insert the wire into the ring tongue terminal and tighten by crimping tool.
4) Use the screwdriver for tightening the terminal.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
10
Fig 5.1.1 Fig 5.1.2
5.2 Power Cord Connection
Note:
All indoor units must be unified of power supply so that they can be powered ON/OFF
at the same time.If it’s with a plug, the power socket must be installed the place where is
within your reach. If the supply cord is damaged, it must be replaced by the manufacturer,
its service agentor similarly qualified persons in order to avoid a hazard.That the appliance
shall be installed in accordance with national wiring regulations. This appliance
incorporates an earth connection for functional purposes only.
Fig 5.2
For units with single-phase power supply.
(1) Detach the electric box lid.
(2) Let the power cord pass through the wiring through-holes.
(3) Connect the power cord to terminal "L, N, ".
(4) Fix the power card with wiring clamp.
5.3 Connection of Communication Line of IDU and ODU
(1) Open the cover of electric box of indoor unit.
(2) Lead the communication line across the rubber ring.
(3) Connect the communication line to terminal D1 and D2 on the 4-digit wiring board of
indoor unit, as shown in Fig.5.3.1(D1D2 Rated Voltage/Current 5V/100mA,ClassⅡ).

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
11
Fig 5.3.1 Fig 5.3.2
(4) Secure the communication line with the wire clamp on the electric box.
(5) In order to ensure the reliability of communication between IDU and ODU and the
communication among each IDU, add a matched resistance(supplied in a package
before ex-factory) on the wiring board of the last indoor unit in a series connection.
The matched resistance should be connected in parallel between terminal screw D1
and D2, as shown in Fig.5.3.2.
5.4 Connection of Communication Line of Wired Controller
(1) Open the cover of electric box of indoor unit.
(2) Lead the communication line of wired controller across the rubber ring.
(3) Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board.
(4) Fix the communication wire with wire clip on the electric box.
5.5 Illuminate for Connection of Wired Controller and Indoor Units
Network
(1) Communication wire of indoor unit and outdoor unit (or indoor unit) is connected to
D1,D2.
(2) Wired controller is connected to H1,H2.
(3) One indoor unit can connect two wired controllers that must be set as master one and
slave one.
(4) One wired controller can control 16 indoor unitS in maximum at the same time.
Notes:
①The type of indoor units must be the same if they are controlled by the same wired
controller.
②When the indoor unit is controlled by two wired controllers, the addresses of the two
wired controllers should be different through address setting. Address 1 is for main
controller; Address 2 is for slave controller. Detailed setting please refer to the
instruction manual of wired controller.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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5.6 Installation of the indoor unit
(1) When routing the piping and wiring from the left or right side of the indoor unit, it is
necessary to cut off the tailings of the pipe left on the holder of the unit. (Shown in
Fig.5.6).
1) Cut down tailings 1 when only the power cord is led.
2) Cut down tailings 1,2 (or 1,2,3) when the connection cord and wire are led.
3) The piping types ①,②,③are recommended.
(2) Let the tubing and cord pass though the piping hole after tied up (refer to Fig .5.6 (d)).
(3) Hang the claw behind the indoor unit on the pothook on the wall panel, and move the
unit left and right to check if the body is firm.
(4) Guarantee that the installation height of the indoor unit should be 2.5m above the
floor.
Fig 5.6
5.7 Connection of external water pump
The external water pump applicable model:
The external water pump is purchased by the user, and the water pump is selected
according to the requirements. The installation must be carried out by a professional
according to the local laws and regulations and the pump manual.
Main board terminal CN8: Provide power for the external water pump；power
specification: 220-240V~50Hz,208-230V~60Hz; Power of water pump ≤30W; when there
may be condensed water according to the operating status of the indoor unit, the power
will be turned on, and when there is no condensed water, the power will be turned off.
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Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
13
Main board terminal CN35: It’s used to detect the water overflow error signal. When
the terminal CN35 is continuously disconnected for a certain period of time, the error code
L3 of water overflow error will be displayed on the indoor unit and the unit stops operation;
when the terminal CN35 is continuously connected for a period of time, the water overflow
error will be eliminated. When the user doesn’t need to use this function, the terminal
CN35 shall be connected according to the short circuit connection at the time of
ex-factory.
Connection of external water pump and indoor unit
(1) Remove the panel.
(2) Remove the electric box cover.
(3) Connect the power cord of external water pump to the positions L and N of terminal
CN8 of the main board; connect the alarm wire to the positions 1 and 2 of terminal
CN35 (refer to Fig .5.7).
(4) Take out the wiring clip from the package of accessories. Remove the original wiring
clip from the electric box and secure the power cord and alerter wire with the new clip.
Fig 5.7

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
14
6 The Best Usage Method
Fig 6
(1) This appliance can be used by children aged from 8 years and above and persons
with reduced physical, sensory or mental capabilities or lack of experience and
knowledge if they have been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved. Children shall not play
with the appliance. Cleaning and user maintenance shall not be made by children
without supervision.
(2) Adjust the set temperature properly in proper to prevent electricity wasting. It is better
tocontrol the difference of the indoor and outdoor temperatures within 5°C.
(3) The better effect will be maintained by adjusting the guide louver downward for
heating and horizontal for cooling.
(4) When the air conditioner is running, don’t open windows or doors for long time,
otherwise the efficiency of unit will be lowered.
(5) Prevent the cooled air blowing to body directly for long time and making indoor
temperature too low, for it is bad for health.
(6) Do not pour water to unit or clean it by water, otherwise a malfunction or electric shock
may happen.
(7) Do not mangle the power cord and the communication cord. The damaged power cord
and communication cord can only be replaced by the specified ones.
(8) This air conditioner allows voltage fluctuation within 220±10%V.
(9) This air conditioner cannot be used for drying clothes and refrigerating food, etc.
7 Maintenance Method
Warning：
(1) Do turn off the unit and cut off the power when cleaning the air conditioner, otherwise
electric shock may happen.
(2) Do not make the air conditioner wet or electric shock may be incurred; Ensure that the
air conditioner will not be cleaned by water rinsing under any circumstance.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
15
(3) Volatile liquid like thinner or gasoline would damage the appearance of the air
conditioner. (Only soft dry cloth and wet cloth moistened with neutral detergent could
be used to clean the surface panel of the air conditioner).
7.1 Cleaning panel
Note：
Do take down it before cleaning.
①Pull along the direction of arrows to take down the panel.
②Clean the panel
Clean it with a soft-hair brush, water and neutral cleaning fluid, and then dry it.
Caution：
Do not use water above 45°C to wash the panel to prevent decoloration or deformation.
Install the panel
As shown in Fig.II, install the stands of both ends of the panel into the slot and put the
middle rotating shaft into the groove, then place the panel and clasp back along the arrow
direction.
Fig 7.1.1 Fig 7.1.2
7.2 Cleaning the air filters
Clean it once every 3 months; When the usage environment has lots of dust, it should
be cleaned more frequently.
(1) Take down the air filter
As shown in Fig.III, open the surface panel by holding the both ends of groove along
the arrow direction, and then take the air filter out downward.
(2) Clean the filter
Use cleaner or water to wash the filter; if the filter is too dirty ( like oil stain on it ), warm
water ( lower than 45°C) with neutral detergent can be used, then dry it in the shade.
Note:
①Do not clean the filter by hot water higher than 45°C for preventing fade or
deformation.
②Do not burn it on fire or the filter would catches fire or deformation.
(3) Install air filter
Install the air filter properly along the arrow direction, making the side marked “Front”
facing yourself and then place the panel back.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
16
Fig 7.2.1 Fig 7.2.2
7.3 Check before the usage season
(1) Check if there is blockage in the inlet or outlet vent of the air conditioner.
(2) Check if the earth wire is earthed reliably.
(3) Check if the batteries in the wireless remote controller have been replaced.
(4) Check if the air filter has been installed properly In order to start up the air conditioner
smoothly after it has been turned off for a long time period, energize the unit 8 hours
before turning it on.
7.4 Check after the usage season
(1) Clean filter and body of air conditioner.
(2) Cut off the main power supply of air conditioner.
8 Table of Error Codes for Indoor Unit
Error
Code
Content
Error
Code
Content
Error
Code
Content
L0
Indoor Unit Error
L9
Quantity Of Group Control
Indoor Units Setting Error
d8
Water Temperature Sensor
Error
L1
Indoor Fan Protection
LA
Indoor Units Incompatibility
Error
d9
Jumper Cap Error
L2
E-heater Protection
LH
Low Air Quality Warning
dA
Indoor Unit
Network Address Error
L3
Water Full Protection
LC
Outdoor-Indoor Incompatibility
Error
dH
Wired Controller Circuit
Board Error
L4
Wired Controller Power
Supply Error
d1
Indoor Unit Circuit Board Error
dC
Capacity DIP Switch Setting
Error
L5
Anti-freezing Protection
d3
Ambient Temperature Sensor
Error
dE
Indoor Unit CO2Sensor Error
L7
No Master Indoor Unit
Error
d4
Inlet Pipe Temperature Sensor
Error
C0
Communication Error
L8
Power Insufficiency
Protection
d6
Outlet Pipe Temperature
Sensor Error
AJ
Filter Cleaning Reminding
db
Special Code:
Project Debugging Code
dL
Outlet Air Temperature Sensor
Error
9 Malfunction Analyzing
Warning:
Do not repair the air conditioner by yourself for the incorrect repair would lead to
electric shockor fire. Please contact the service center and have the unit repaired by the
specialized personnel. Check the following items before contacting the service center, as it
could save your time and cost.