Kaysun KSDF-28 DN4.0 User manual

Original instructions
Thank you very much for purchasing our air conditioner.
Before using your air conditioner, please read this manual carefully and keep it for future
reference.
INSTALLATION MANUAL
Console Unit 2nd Generation
KSDF-28 DN4.0 KSDF-36 DN4.0 KSDF-45 DN4.0

1
Contents
Installation Manual
Safety Precautions
Read carefully before you install the air conditioner to make sure that
the installation is correct.
There are two types of precautions as described below:
Warning: Failure to comply may lead to serious injury.
Caution: Failure to comply may lead to injury or damage of the
unit. Depending on the situation, this may also lead to serious injury.
Once the installation is completed, and the unit has been tested and
veried to be operating normally, please explain to the customer how
to use and maintain the unit according to this manual. In addition,
make sure that the manual is kept properly for future reference.
• Installation, maintenance and cleaning the filter work must be
carried out by professional installers. Refrain from doing it yourself.
Improper installation may cause water leakage, electric shock, or
re.
• Install the air conditioner according to the steps described in this
manual. Improper installation may cause water leakage, electric
shock, or re.
• For installation in smaller rooms, you must adopt the relevant
measures to prevent the refrigerant concentration from exceeding
the limit. Please consult the sales agent on the relevant measures
required. A high concentration of refrigerant in an airtight space can
cause oxygen insufciency (anoxia).
• Make sure the required parts and accessories are installed. Using
unspecied parts may cause the air conditioner to malfunction or
drop, as well as water leakage, electric shock, and re.
• Mount the air conditioner in a place that is sturdy enough to bear its
weight. If the base is not secured properly, the air conditioner may
drop leading to damages and injuries.
• Take in full consideration to the effects of strong winds, typhoons and
earthquakes, and reinforce the installation. Improper installation may
cause the air conditioner to drop leading to accidents.
• Make sure a standalone circuit is used for the power supply. All
electrical parts must comply with the local laws and regulations,
and what is stated in this installation manual. The installation works
must be carried out by a professional and qualified electrician.
Insufcient capacity or improper electrical works can lead to electric
shock or re.
• Use only electrical cables that full the specications. All wiring on
site must be carried out in accordance with the connection diagram
attached to the product. Make sure that there are no external forces
acting on the terminals and wires. Improper wiring and installation
may cause a re.
• Make sure the power cord, communication and controller wiring
are straight and level when you are working on the connections,
and the cover on the electric box is tight. If the electric box is not
closed properly, it may lead to electric shock, re or overheating of
electrical components.
• If the refrigerant leaks during installation, open the doors and
windows immediately to ventilate the area. Refrigerant can produce
toxic gases when in contact with re.
• Switch off the power supply before touching any electrical
component.
• Do not touch the switch with wet hands. This is to prevent electrical
shocks.
• Do not come in direct contact with the refrigerant leaking from the
connections of refrigerant piping. Otherwise, it may lead to frostbite.
• The air conditioner must be grounded. Do not connect the earth
line (ground) to gas piping, water piping, lightning rods or telephone
earth lines. Improper grounding can lead to electric shock or re,
and may cause mechanical failure due to current surges from
lightning and so on.
• The earth leakage circuit breaker must be installed. There is a risk
of electric shock or re if the earth leakage circuit breaker is not
installed.
• The appliance shall be installed in accordance with national wiring
regulations.
• The appliance must be installed 2,3m above oor.
• If the supply cord is damaged, it must be replaced by the
manufacturer or its service agent or a similarly qualied person in
order to avoid a hazard.
• An all-pole disconnection switch having a contact separation of at
least 3mm in all poles should be connected in xed wiring.
• The temperature of refrigerant circuit will be high, please keep the
interconnection cable away from the copper tube.
• The power cord type designation is H05RN-For above/H07RN-F.
• Check the power supply before installation. Ensure that the power
supply must be reliably grounded following local, state and National
Electrical Codes. If not, for example, if the ground wire is detected
charged, installation is prohibited before it is rectied. Otherwise,
there is a risk of re and electric shock, causing physical injury.
• Check the electric wire, water and gas pipeline layout inside the
wall, oor and ceiling before installation. Do not implement drilling
unless conrm safety with the user, especially for the hidden power
wire. An electroprobe can be used to test whether a wire is passing
by at the drilling location, to prevent physical injury caused by
insulation broken cords.
• Install the water discharge piping according to the steps described
in this manual, and make sure that the water discharge is smooth,
and the piping is properly insulated to prevent condensation.
Improper installation of the water discharge piping may lead to
water leakage, and damage the indoor furniture.
• When mounting the indoor and outdoor units, make sure the power
cord is installed at a distance of at least 1 m away from any TV or
radio so as to prevent noise or interference with the images.
• The refrigerant required for the installation is R-410A. Make sure
the refrigerant is correct before installation. Incorrect refrigerant
may cause the unit to malfunction.
• Do not install the air conditioner in the following places:
1) where there is oil or gas, such as the kitchen. Otherwise, the
plastic parts may age, fall off or water may leak.
2) where there are corrosive gases (such as sulphur dioxide).
Corrosion in the copper pipes or welded parts may cause the
refrigerant to leak.
Warning
Caution
Installation Manual..............................................................................1
Accessories ........................................................................................3
1. Before Installation.......................................................................4
2. Choosing an Installation Site......................................................4
3. Indoor Unit Installation................................................................4
4. Refrigerant Piping Installation ....................................................5
5. Water Discharge Piping Installation............................................7
6. Electrical Wiring..........................................................................7
7. On-site Conguration .................................................................9
8. Test Run ...................................................................................10
9. The Explain Of The Display Panel ...........................................12
10. Part Names ..............................................................................12
11. Air Conditioner Operations and Performance ..........................13
12. Adjusting Air Flow Direction......................................................13
13. Maintenance.............................................................................14
14. Symptoms That Are Not Faults.................................................15
15. Troubleshooting........................................................................15

2
3) where there are machines emitting electromagnetic waves.
Electromagnetic waves may interfere with the control system,
causing the unit to malfunction.
4. where there is a high salt content in the air. When exposed
to air with a high salt content, the mechanical parts
will experience accelerated ageing which will severely
compromise the service life of the unit.
5. Where there are major voltage fluctuations. Operating the
unit using a power supply system that has large voltage
fluctuations will reduce the service life of the electronic
components, and cause the unit's controller system to
malfunction.
6. where there is a risk of leakage of flammable gases.
Examples are sites that contain carbon bres or combustible
dust in the air, or where there are volatile combustibles (such
as diluent or petrol). The above gases may cause explosion
and re.
7. Do not touch the ns of the heat exchanger as this may lead
to injury.
8. Some products use the PP packing belt. Do not pull or tug
on the PP packing belt when you transport the product. It will
be dangerous if the packing belt breaks.
9. Note the recycling requirements for nails, wood, carton and
other packaging materials. Do not discard these materials
directly as these may lead to bodily harm.
10. Tear up the packaging bag for recycling to prevent children
from playing with it, and leading to suffocation.
11. The appliance shall not be installed in the laundry.

3
Accessories
Verify that the air conditioner includes the following accessories.
Accessories to purchase locally
Name Shape Quantity
Installation ttings
1. Hook 2
2. Mounting screw(ST3.9x25-C-H) 10
Others
3. Installation manual 1
4. Remote alarm signal wires 1
5. Remote control signal wires 1
6. Flexible hose tube 1
7. Copper nut: Use for pipe connection of
engineering installation 1
Code Name Appearance Dimensions Qty Note
1 Copper pipe
Choose and purchase copper pipes
that correspond to the length and size
calculated for the selected model in the
installation manual of the outdoor unit
and your actual project requirements.
To purchase based
on actual project
requirements.
Use to connect indoor
refrigerant piping.
2
PVC pipe
for water
discharge
Inner diameter, 18 mm.
To purchase based
on actual project
requirements.
Use to discharge
condensed water from
the indoor unit.
3
Insulation
casing for
piping
The inner diameter is based on the
diameter of the copper and PVC pipes.
The thickness of the pipe casing is 10
mm or more. Increase the thickness
of the casing (20 mm or thicker) when
the temperature exceeds 30°C or the
humidity exceeds RH80%.
To purchase based
on actual project
requirements.
Protect piping from
condensation.

4
1. Before Installation
2. Choosing an Installation Site
3. Indoor Unit Installation
Make sure you check the packaging during transportation. Claim
compensation for any damage from the carrier immediately.
Installation position must meet the following requirements:
1. There is enough space for installation and maintenance.
2. The air inlets and outlets will not interfere with one another.
Impact of external air ow is minimal.
3. Air from the unit can reach every part of the room.
4. Layout of connecting piping and water discharge piping is
convenient.
• Removing front grille
• For wall installations, secure hook using 6 screws and the
indoor unit using 4 screws
Fix the hook with tapping screw onto the walll which can
support the weight of the indoor unit. (Refer to Figure 3.2)
1) Open the front panel.
2) Remove the 4 screws and remove the front grille while
pulling it forward (3 tabs).
Take note of the following when transporting the equipment:
1. Fragile. Handle with care.
2. Determine the route to move the unit to the installation site.
3. Transport the equipment on the base of the original package as
much as possible.
4. When lifting the equipment, use a protective device to protect
the equipment, prevent damage, and always take note of where
the centre of gravity is.
≥100mm
≥100mm ≥100mm
≥100mm
≥100mm ≥100mm
Figure 2.1
Figure 2.2
Figure 3.1
Figure 3.2
195mm
700mm 210mm
600mm
Hook
Hook
Tapping
screw
Washer
Figure 2.3
(unit: mm)
64
)007(
431
591
591
62
05
475
)006(
061
35
53
446
1 05
052
210
1 04
032
195mm
＜6mm

5
For oor installations, secure the indoor unit using 6 screws.
(Do not forget to secure to the rear wall.) (Refer to Figure 3.5)
Attach the front panel and front grille in their original
positions once all connections are complete.
Figure 3.3
Figure 3.4
Figure 4.1
Figure 4.2
Table 4.1
liquid pipe (the
slim one)
Normal wrench
Torque wrench
Pipe socket cap
Pipe ttings
gas pipe (the
bigger one)
Figure 3.5
Hang the indoor unit on the hook. (Refer to Figure 3.3)
(The bottom of body can touch with oor or suspended,
but the body must install vertically.)
Using 4 screws to secrew the indoor unit. (Refer to
Figure 3.4)
The length and level difference requirements for the refrigerant piping are
different for different indoor and outdoor units. Refer to the installation manual
of the outdoor unit.
1. Piping material: Copper pipes for air handling.
2. Piping size: Choose and purchase copper pipes that correspond to
the length and size calculated for the selected model in the installation
manual of the outdoor unit and your actual project requirements.
1. Seal the two ends of the piping properly before you connect the indoor
and outdoor piping. Once unsealed, connect the piping of the indoor and
outdoor units as quickly as possible to prevent dust or other debris from
entering the piping system via the unsealed ends, as this may cause the
system to malfunction.
2. If the piping needs to go through walls, drill the opening in the wall, and
place accessories like casings and covers for the opening properly.
3. Place the refrigerant connecting piping and the communication wiring for
the indoor and outdoor units together, and bundle them tightly to make
sure air does not enter and condensate to form water that may leak from
the system.
4. Insert the bundled piping and wiring from outside the room through the
wall opening into the room. Be careful when you lay out the piping. Do
not damage the piping.
• Refer to the installation manual attached with the outdoor unit on
installation of the refrigerant piping for the outdoor unit.
• All gas and liquid piping must be properly insulated; otherwise, this may
cause water to leak. Use heat insulation materials that can withstand
high temperatures above 120°C to insulate the gas pipes. In addition, the
insulation of the refrigerant piping should be reinforced (20 mm or thicker)
in situations where there is high temperature and/or high humidity (when
part of refrigerant piping part is higher than 30°C or when the humidity
exceeds RH80%). Otherwise, the surface of the heat insulation material
may be exposed.The sizes of copper pipe see table 4.1 and position of
gas&liquid pipe see gure 4.1
• Before the works are carried out, verify that the refrigerant is R-410A. If
the wrong refrigerant is used, the unit may malfunction.
• Other than the specied refrigerant, do not let air or other gases enter the
refrigeration circuit.
• If the refrigerant leaks during installation, make sure you fully ventilate
the room.
• Use two wrenches when you install or dismantle the piping, a common
wrench and a torque wrench. See Figure 4.2.
• Slot the refrigerant piping into the brass nut (accessory 7), and expand
the pipe socket. Refer to the following table for the size of the pipe socket
and the appropriate tightening torque.
4. Refrigerant Piping Installation
4.1 Length and Level Difference Requirements for the Piping
Connections to the Indoor and Outdoor Units
4.2 Piping Material and Size
4.3 Piping Layout
4.4 Piping Installation
Pipe Material Copper Pipe for Air Conditioner
Refrigerant
Model 22-45
Size(mm)
(Liquid side) Φ6.4
R-410A
(Gas side) Φ12.7

6
Outer diameter of
connecting piping (mm) Tightening torque (N.m)
Φ6.4 14.2~17.2
Φ9.5 32.7~39.9
Φ12.7 49.5~60.3
Φ15.9 61.8~75.4
Φ19.1 97.2~118.6
Caution Caution
Caution
Precautions to take when welding the refrigerant pipes
Open the front plate to remove the screws.
Carry out the air tightness test on the system according to the instructions in the
installation manual of the outdoor unit.
Create a vacuum in the system according to the instructions in the installation
manual of the outdoor unit.
Charge the system with refrigerant according to the instructions in the
installation manual of the outdoor unit.
Charge the system with refrigerant according to the instructions in the
installation manual of the outdoor unit.
Slide the two sliders to the left and right to unlock the panel.
Unit body
Attached insulation heat pump belt
Face upwards
On-site piping side
Figure 4.5
The heat insulation treatment is carried out on the piping at the gas and liquid
sides of the indoor unit respectively.
a. The piping on the gas side must use heat insulation material that can withstand
temperatures of 120°C and more.
b. For the piping connections of the indoor unit, use the insulation casing for
copper pipes to carry out the insulation treatment, and close all gaps.
4.5 Air Tightness Test
4.7 Vacuum
4.8 Refrigerant
4.9 Connecting the Copper Pipes for the Indoor Unit
4.9.1 Open the front panel
4.9.2 Remove front panel
4.6 Heat Insulation Treatment for Gas-Liquid Piping Connections
for the Indoor Unit
• Apply the appropriate tightening torque according to the installation
conditions. Excessive torque will damage the socket cap, and the cap will
not be tight if you apply insufcient torque, leading to leakages.
For the vacuum, make sure that the air and liquid cut-off valves of the
outdoor unit are all closed (maintain the factory status).
• The Air Tightness Test helps to ensure that the air and liquid cut-off
valves of the outdoor unit are all closed (maintain the factory defaults).
• Before you weld the refrigerant pipes, ll the pipes with nitrogen rst to
discharge the air in the pipes. If no nitrogen is filled during welding, a
large amount of oxide lm will form inside the piping which may cause the
air conditioning system to malfunction.
• Welding can be carried out on the refrigerant pipes when the nitrogen gas
has been replaced or relled.
• When the pipe is lled with nitrogen during welding, the nitrogen must be
reduced to 0.02 MPa using the pressure release valve. See Figure 4.4.
Do not let air, dust, and other particles invade the piping system during the
installation of the connecting pipes.
Install the connecting pips only when the indoor and outdoor units are
secured.
Make sure to keep the connecting pipes dry during installation so that no
water will enter the piping system.
Before the socket cap is installed on the pipe socket, apply some refrigerant
oil on the socket (both inside and outside), then rotate it three or four times
before you tighten the cap. See Figure 4.3.
Apply refrigerant oil
Figure 4.3
Figure 4.6
Figure 4.7
Figure 4.4
1 Copper piping
2 Section being brazed
3 Nitrogen connection
4 Hand valve
5Pressure-reducing valve
6 Nitrogen

7
Warning
Remove the front frame from the base of the unit. Turn it up by about 30°, and the
entire frame will then open.
• Tilt the water discharge pipe downwards. Make sure the following
situations do not arise when the water discharge pipes are being
installed:
Once the water discharge piping is installed, inject a small amount of water
into the water pan to check if the drainage is smooth.
• When connecting to a long water discharge pipe, the indoor unit portion
must be covered with insulation casing. Make sure the long pipe does
not become loose.
4.9.3 Remove front frame
5.1 Water Discharge Piping Installation for Indoor Unit
6.1 Power Cord Connection
5.3 Water Discharge Test
5. Water Discharge Piping Installation
6. Electrical Wiring
First install the indoor unit. Then install the outdoor unit. Be careful of bends
and adjust the pipeline accordingly.
Do not expose the pipeline at the back of the indoor unit.
Make sure the water discharge pipes are not loose and moving.
Make sure all the connections in the piping system are properly sealed to
prevent water leakages.
Figure 4.8
Heat insulation material
1.5m~2m
Water discharge pipe
Extended water discharge pipe
Protection piping Wall
Outdoor power
supply
Indoor power
supply
Communication wire between
indoor and outdoor units
Grounding line Wire slot
Indoor unit
Grounding line
RCCB
RCCB
Bending
S-shape
Figure 5.1
Figure 5.2
Figure 6.1
Slope
Caution
Caution
• The condensed water in the rear of the indoor unit is gathered in the
water pan and discharged from the piping. Do not place anything in
the water pan.
• All the supplied parts, materials and electrical works must comply with
local regulations.
• Use only copper wires.
• Use a dedicated power supply for the air-conditioners. The power voltage
must be in line with the rated voltage.
• The electrical wiring works must be carried out by a professional
technician, and must comply with the labels stated in the circuit diagram.
• Before the electrical connection works are carried out, turn off the power
supply to prevent injuries caused by electric shock.
• The external power supply circuit of the air conditioner must include an
earth line, and the earth line of the power cord connecting to the indoor unit
must be securely connected to the earth line of the external power supply.
• Leakage protective devices must be configured according to the local
technical standards and requirements for electrical and electronic devices.
• The fixed wiring connected must be equipped with an all-pole
disconnection device with a minimum 3 mm contact separation.
• The distance between the power cord and signalling line must be at least
300 mm to prevent the occurrences of electrical interference, malfunction
or damage to electrical components. At the same time, these line must not
come in contact with the piping and valves.
• Choose electrical wiring that conforms to the corresponding electrical
requirements.
• Connect to the power supply only after all the wiring and connection works
have been completed, and carefully checked to be correct.
• Use a dedicated power supply for the indoor unit that is different from the
power supply for the outdoor unit.
• Use the same power supply, circuit breaker and leakage protective
device for the indoor units connected to the same outdoor unit.

8
P
Q
Figure 6.2 shows the power supply terminal of the indoor unit.
Figure 6.2
Figure 6.3 Figure 6.4
Figure 6.5
POWER IN
Circular wiring
terminal
Proper power wiring connections
: Copper wire
Insulation
tube
Switch (breakers for
wiring and over current
protection)
Table 6.1
Refer to Tables 6.1 and 6.2 for the specications of the power cord
and communication wire. A wiring capacity that is too small will cause
the electrical wiring to become too hot, and lead to accidents when
the unit burns and becomes damaged.
The wired controller and the indoor unit can be connected in different
manners, depending on the forms of communication.
1. For a bidirectional communication mode:
• Use 1 wired controller to control 1 indoor unit or 2 wired
controllers (one master and one slave controller) to control 1
indoor unit (see Figure 6.7);
• Use 1 wired controller to control multiple indoor units or 2
wired controllers (one master and one slave controller) to
control multiple indoor units (see Figure 6.8);
Breakers with
current leakage
All-pole disconnection
device with leakage
protecto Pull box
Pull box
Pull box
Indoor unit
Indoor unit Indoor unit Indoor unit Outdoor
unit
Outdoor
unit
(Connect the shielded end of the shielded
wire to the electronic controller box sheet
metal " " here)
Connecting the shielded
layer of the shielded wire
Only the last indoor unit requires adding the build-out resistor
at P and Q.
(open)
Signalling line
between outdoor
units
Indoor and outdoor
units Communication
wire
(P Q E)
(P Q E)
Power
cord
220-240V~50/60Hz
220-240V~50Hz
Power supply
When connecting to the power supply terminal, use the circular wiring
terminal with the insulation casing (see Figure 6.3).
Use power cord that conforms to the specications and connect
the power cord rmly. To prevent the cord from being pulled out by
external force, make sure it is xed securely.
If circular wiring terminal with the insulation casing cannot be used,
please make sure that:
• Do not connect two power cords with different diameters to the
same power supply terminal (may cause overheating of wires
due to loose wiring) (See Figure 6.4).
Abbreviations:
MCA: Minimum Circuit Amps kW: Rated motor output
MFA: Maximum Fuse A mps FLA: Full Load Amps
IFM: Indoor Fan Motor
6.2 Electrical Wiring Specications
6.3 Communication Wiring
6.3.1 Communication wiring between the indoor and outdoor units
6.3.2 Communication wiring between the indoor unit and wired
controller
Model 2.8-4.5kW
Power
supply
Phase 1-phase
Volt and frequency 220-240V~50Hz
220-240V~50/60Hz
Communication wire between indoor
and outdoor units Shielded 3xAWG16-AWG18
Communication wire between indoor
unit and wired controller Shielded AWG16-AWG20
Fuse 15A
Table 6.2 Indoor units electrical characteristics
Capacity
Power supply IFM
Hz Volts MCA MFA kW FLA
2.8KW
50
50/60 220-240
0.40 15 0.02 0.32
3.6KW 0.42 15 0.02 0.33
4.5KW 0.53 15 0.02 0.42
Refer to local laws and regulations when deciding on the dimensions for
the power cords and wiring. Get a professional to select and install the
wiring.
Warning
• Use only shielded wires for the communication wiring. Any other type
of wires may produce a signal interference that will cause the units to
malfunction.
• Do not carry out electrical works like welding with the power on.
• All shielded wiring in the network are interconnected, and will eventually
connect to earth at the same point " ".
• Do not bind the refrigerant piping, power cords and communication
wiring together. When the power cord and communication wiring are
parallel, the distance between the two lines must be 300 mm or more in
order to prevent signal source interference.
• Communication wiring must not form a closed loop.
• The indoor and outdoor units communicate via the RS485 serial port.
• The communication wiring between the indoor and outdoor units should be
connected one unit after another in a daisy chain from the outdoor unit to
the nal indoor unit.And the shielded layer must be properly grounded, and
a build-out resistor must be added to the last indoor unit to enhance the
stability of the communication system (see Figure 6.6).
• Incorrect wiring such as a star connection or a closed ring will cause
instability of the communication system and system control anomalies.
• Use a three core shielded wire (greater than or equal to 0.75 mm2for the
communication wiring between the indoor and outdoor units.
Make sure the wiring is connected correctly. The connecting lead for this
communication wire must come from the master outdoor unit.
Figure 6.6
Build-out resistor
P Q E N
L
+
L N

9
Indoor unit 1
Indoor unit 1
Master wired controller Slave wired controller
Wired Controller 1
Wired Controller 1
Wired Controller 2
Indoor unit 2 Indoor unit n(n<=16)
Wired Controller 1 Wired Controller 2
Master wired controller Slave wired controller
Figure 6.7
POWER_S
ENC1
Figure 6.8
Figure 6.9
Figure 7.1
7.1 Capacity Settings
7.2 Address Settings
7.3 DIP Switch Settings on Main Board
7. On-site Conguration
6.4 Handling the Electrical Wiring Connection Points
Set up the PCB board DIP switch on the indoor electric control box
to cater to different uses. Once the settings are done, make sure you
cut off the main power switch again, and then switch the power on.
If the power is not cut off and switched on again, the settings will not
be executed.
When this indoor unit is connected to the outdoor unit, the outdoor
unit will automatically allocate the address to the indoor unit.
Alternatively, you may use the controller to manually set the address.
ENC1 Settings for Capacity DIP Switch:
For a unidirectional communication mode:
Use 1 wired controller to control 1 indoor unit (see Figure 6.9).
• The addresses of any two indoor units in the same system cannot be the
same.
• The network address and the indoor unit address are the same, and
does not have to be congured separately.
• Once the address settings are completed, mark the address of each
indoor unit to facilitate after-sales maintenance.
• The centralized control of the indoor unit is completed on the outdoor
unit. For details, refer to the manual on the outdoor unit.
• Once the wiring and connections are done, use tie straps to
secure the wiring properly so that the connection joint cannot
be pulled apart by external force. The connection wiring must
be straight out so that the cover of the electrical box is level
and can be closed tightly.
• Use professional insulation and sealing materials to seal
and protect the perforated wires. Poor sealing may lead to
condensation, and entry of small animals and insects that may
cause short circuits in parts of the electrical system, causing
the system to fail.
Indoor unit 1 Display board
temperature modication code
Air outlet selection switch
OFF
ON
ON ON
Caution
• For the specific connection method, refer to the instructions in the
corresponding wired controller manual to carry out the wiring and
connections.
DIP Switch Code Capacity
1 2800W
2 3600W
3 4500W
Caution
Caution
• The capacity DIP switches have been congured before delivery. Only
a professional maintenance personnel should change these settings.
• Once the centralized control function for the indoor unit has been
completed on the outdoor unit, the DIP switch on main control panel of
the outdoor unit must be set to auto addressing; otherwise, the indoor
unit in the system are not controlled by the centralized controller.
• The system can connect up to 64 indoor units (address 0~63) at the
same time. Each indoor unit can only have one address DIP switch in
the system. The addresses of any two indoor units in the same system
cannot be the same. Units that have the same address may malfunction.
X2 X1
X2 X1
D2
D1
X2 X1
X2 X1 D2 D1
X2 X1 D2 D1
X2 X1 X2 X1
D2
D1
D2
D1
X2 X1
D2
D1
A
B
C
D
A
B
C
D
SW101
SW102SW103

10
0/1 denition of each dial code switch:
means 0 means 1
SW1_1
SW1
[ 0 ] Cooling mode temperature compensation is 0°C
SW1
[ 0 ] Cooling mode temperature compensation is 2°C
SW1_2
SW1
[ 0 ] EEV at position 96 (steps) in standby in heating mode
SW1
[ 0 ] EEV at position 72 (steps) in standby in heating mode
SW3_1
SW3
[ 0 ] Reserved
SW3
[ 1 ] Clear indoor unit address
SW3_2
SW3
[ 0 ] Reserved
SW101
SW101
[ 1 ] The lower air outlet open
ON
SW101
[ 0 ] The lower air outlet close
ON
SW4
SW4
[00]
In heating mode when the set temperature has been
reached, the fan operates in a 4 minutes off / 1 minute on
repeating cycle
SW4
[01]
In heating mode when the set temperature has been
reached, the fan operates in an 8 minutes off / 1 minute on
repeating cycle
SW4
[10]
In heating mode when the set temperature has been
reached, the fan operates in a 12 minutes off / 1 minute on
repeating cycle
SW4
[11]
In heating mode when the set temperature has been
reached, the fan operates in a 16 minutes off / 1 minute on
repeating cycle
SW102
SW102
[00]
In heating mode fan does not run when indoor heat
exchanger mid-point temperature is 15°C or below
SW102
[01]
In heating mode fan does not run when indoor heat
exchanger mid-point temperature is 20°C or below
SW102
[10]
In heating mode fan does not run when indoor heat
exchanger mid-point temperature is 24°C or below
SW102
[11]
In heating mode fan does not run when indoor heat
exchanger mid-point temperature is 26°C or below
SW2
SW2
[00] Factory settings
SW103
SW103
[00] Heating mode temperature compensation is 6°C
SW103
[00] Heating mode temperature compensation is 2°C
SW103
[10] Heating mode temperature compensation is 4°C
SW103
[11]
Heating mode temperature compensation is 0°C
(use follow me function)
J1
Auto restart function enabled
Auto restart function disabled
Caution
• All DIP switches (including the capacity DIP switch) have been congured
before delivery. Only a professional maintenance personnel should
change these settings.
• Improper DIP switch settings may cause condensation, noise, or
unexpected system malfunction.
7.4 Error Codes and Denitions
Error
code Content
E0 Mode conic t
E1 Communication error between indoor and outdoor u nits
E2 Indoor ambient temperature sensor (T1) error
E3 Indoor heat exchanger mid-point temperature sensor (T2) error
E4 Indoor heat exchanger outlet temperature sensor (T2B) error
E6 Fan error
E7 EEPROM error
Eb Indoor EEV coil error
Ed Outdoor unit error
EE Water level error
FE Indoor unit has not been assigned an address
8.1 Things to Note Before Test Run
8.2. Test Run
8. Test Run
• Indoor and outdoor units are properly installed;
• Piping and wiring are correct;
• No leakage from the refrigerant piping system;
• Water discharge is smooth;
• Insulation is complete;
• Grounding line has been properly connected;
• Piping length, and amount of refrigerant lled have been recorded;
• The voltage of the power supply is the same as the rated voltage of the air
conditioner;
• No obstacles at the air inlet and outlet of the indoor and outdoor units;
• Cut-off valves for the gas and liquid ends of the outdoor unit are opened;
When the wired/remote controller is used to set the cooling operations of
the air conditioner, check the following items one by one. If there is a fault,
troubleshoot according to the manual.
• Function keys of the wired/remote controller are operating normally;
• Room temperature regulation is normal;
• LED indicator is on;
• Water discharge is normal;
• No vibration and strange sounds during operation;
Note: Once the power is connected, when the unit is turned on or started
immediately after the unit is turned off, the air conditioner has a protective
function which delays the start of the compressor.

11
Caution
Warning
Operation Manual
There are two types of precautions as described below:
Warning: Failure to comply may lead to death or serious injury.
Caution: Failure to comply may lead to injury or damage of the
unit. Depending on the situation, this may also lead to serious injury.
Once the installation is completed, please keep the manual properly
for future reference. When this air conditioner is handed over to other
users, make sure that the manual is included with the handover.
• Do not use this unit in locations where ammable gas may exist. If
ammable gas comes into contact with the unit, a re may occur,
which could result in serious injury.
• If this unit exhibits any abnormal behavior (such as emitting smoke)
there is a danger of serious injury. Disconnect the power supply and
contact your supplier or service engineer immediately.
• The refrigerant in this unit is safe and should not leak if the system
is designed and installed properly. However, if a large amount of
refrigerant leaks into a room, the oxygen concentration will decrease
rapidly, which can cause serious injury. The refrigerant used in this
unit is heavier than air, so the danger is greater in basements or
other underground spaces. In the event of a refrigerant leak, turn off
any devices that produce a naked ame and any heating devices,
ventilate the room, and contact your supplier or service engineer
immediately.
• Toxic fumes may be produced if the refrigerant in this unit comes
into contact with naked ames (such as from a heater, gas stove/
burners, or electric appliances).
• If this unit is used in the same room as a cooker, stove, hob, or
burner, ventilation for sufcient fresh air must be ensured, otherwise
the oxygen concentration will fall, which may cause injury.
• Dispose of this unit’s packaging carefully, so children cann’t play
with it. Packaging, especially plastic packaging, can be dangerous,
can cause serious injury. Screws, staples and other metal packaging
components can be sharp and should be disposed of carefully to
avoid injury.
• Do not attempt to inspect or repair this unit yourself. This unit should
only be serviced and maintained by a professional air conditioning
service engineer. Incorrect servicing or maintenance can cause
electric shocks, re or water leaks.
• This unit should only be re-positioned or re-installed by a
professional technician. Incorrect installation can lead to electric
shocks, fire or water leaks. The installation and grounding of
electrical appliances should only be carried out by licensed
professionals. Ask your supplier or installation engineer for further
information.
• Do not allow this unit or its remote controller to come into contact
with water, as this can lead to electric shocks or re.
• Turn off the unit before cleaning it to avoid electric shocks.
• Otherwise, an electric shock and injury may result.
• To avoid electric shocks and res, install an earth leakage detector.
• Do not use paint, varnish, hair spray, other flammable sprays or
other liquids that may give off ammable fumes/vapor near this unit,
as doing so can cause res.
• When replacing a fuse, ensure that the new fuse to be installed
completely complies with requirements.
• Do not open or remove the unit's panel when the unit is powered on.
Touching the unit's internal components while the unit is powered on
can lead to electric shocks or injuries caused by moving parts such
as the unit's fan.
• Ensure that the power supply is disconnected before any servicing
or maintenance is carried out.
• Do not touch the unit or its remote controller with wet hands, as
doing so can lead to electric shocks.
• Do not allow children to play near this unit, as doing so risks injury.
• Do not insert your ngers or other objects into the unit’s air inlet or
air outlet to avoid injury or damage to the equipment.
• Do not spray any liquids onto the unit or allow any liquids to drip
onto the unit.
• Do not place vases or other liquid containers on the unit or in places
where liquid could drip onto it. Water or other liquids that come into
contact with the unit can lead to electric shocks or res.
• Do not remove the remote controller’s front or back overs and do
not touch the remote controller’s internal components, as doing so
can cause injury. If the remote controller stops working, contact your
supplier or service engineer.
• Ensure that the unit is properly grounded, otherwise electric shocks
or a fire may result. Electrical surges (such as those that can be
caused by lightning) can damage electrical equipment.
• Ensure that suitable surge protectors and circuit breakers are
properly installed, otherwise electric shocks or a re may result.
• Dispose of this unit properly and in accordance with regulations.
If electrical appliances are disposed of in landfills or dumps,
hazardous substances can leak into the groundwater and thus enter
the food chain.
• Do not use the unit until the qualied technician instructs you that it
is safe to do so.
• Do not place appliances that produce naked ames in the path of
the airow from the unit. The airow from the unit may increase the
rate of combustion, which may cause a re and cause serious injury.
Alternatively, the airow may cause incomplete combustion which
can lead to reduced oxygen concentration in the room, which can
cause serious injury.
• Only use the air conditioner for its intended purpose. This unit
should not be used to provide refrigeration or cooling for food,
plants, animals, machinery, equipment or art.
• Do not insert your ngers or other objects into the unit’s air inlet or
air outlet to avoid injury or damage to the equipment.
• The fins on the unit’s heat exchanger are sharp and can cause
injury if touched. To prevent injury, when the unit is being serviced,
gloves should be worn or the heat exchanger should be covered.
• Do not place items which might be damaged by moisture under the
unit. When the humidity is greater than 80% or if the drain pipe is
blocked or the air lter is dirty, water could drip from the unit and
damage objects placed under the unit.
• Ensure that the drain pipe functions properly. If the drain pipe is
blocked by dirt or dust, water leaks may occur when the unit is
running in cooling mode. If this happens, turn the unit off and contact
your supplier or service engineer.
• Do not touch the internal parts of the controller. Do not remove the
front panel. Some internal parts may cause injury or be damaged.
• Ensure that children, plants and animals are not directly exposed to
the airow from the unit.
• When fumigating a room with insecticide or other chemicals, cover
the unit well and do not run it. Failure to observe this caution could
lead to chemicals getting deposited inside the unit and later emitted
from the unit when it running, endangering the health of any room
occupants.
• Do not dispose of this product as unsorted waste. It must be
separately collected and processed. Ensure that all applicable
legislation regarding the disposal of refrigerant, oil and other
materials is adhered to. Contact your local waste disposal authority
for information about disposal procedures.

12
• Do not dispose of this product as unsorted
waste. It must be separately collected and
processed. Ensure that all applicable legislation
regarding the disposal of refrigerant, oil and other
materials is adhered to. Contact your local waste
disposal authority for information about disposal
procedures.
• 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 responsible for their safety. Children should be
supervised to ensure that they do not play with the appliance.
• 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.
9. Part Names
10. The Explain Of The Display Panel
The figure shown above is for reference only and may be slightly
different from the actual product.
Display panel
Swing
Down air outlet
Def./Fan
Manual
Operation
Timer
Table: Display panel output under normal operating conditions.
Note: Flashing slowly means ashing once per second.
Figure 9.1
Unit state
Display output
Digital display panels
Unit state Digital display
Standby Operation indicator
ashes slowly
Shutting-down All indicators off
Operation
Normal operation Operation indicator
on
Cooling and heating modes: set temperature
Fan only mode: indoor ambient temperature
Cold draft prevention
or outdoor unit
defrosting operation
Operation
and Anti-cold
/ defrosting
indicators on
Set temperature
A timer has been set Timer indicator on

13
11. Air Conditioner Operations and Performance
To ensure the desired temperature is achieved efciently, ensure that:
• All windows and door are closed.
• The airow direction is adjusted to work in running mode.
The air lter is clean.
Please note how you can best save energy and achieve the best
cooling/heating effect.
• Regularly clean air lters inside indoor units.
• Avoid too much outdoor air coming into air-conditioned spaces.
• Note that outlet air is cooler or heater than set room temperature.
Avoid direct exposure to outlet air as it may be too cool or hot.
• Maintain a proper air distribution.Air outlet louvers should be
used to adjust the direction of outlet airow, as doing so might
ensure more efcient operation.
The operating temperature range under which the unit runs stably
are given in below table.
Figure 11.1
Figure 11.2
Figure 11.3
Figure 11.4
Check
regularly
Close doors and windows.
Caution
• The unit performs stably in the temperature range given in
above table. If the indoor temperature is outside the unit's
normal operating range, it may stop running and display an
error code.
Mode Indoor temperature
Cooling
17-32°C
If the indoor humidity is abov e 80%, condensation may f orm on
the surf aceof the unit.
Heating ≤ 27°C
Do not set the
temperature
too low
12. Adjusting Air Flow Direction
Since warmer air rises and cooler air falls, the distribution of warmed/
cooled air around a room can be improved by positioning the unit's
louvers. The louver angle can be adjusted by pressing the [SWING]
button on the remote controller.

14
Caution
Caution
• During heating operation, horizontal airflow will aggravate
the uneven distribution of room temperature.
• The louver direction: horizontal airflow is recommended
during cooling operation. Note the downward air flow will
cause condensation on the air outlet and louver surface.
• Please release pressure before disassembly.
• Before you clean the air conditioner, ensure it is powered off.
• Check that the wiring is undamaged and connected.
• Use a dry cloth to wipe the indoor unit and remote controller.
• A wet cloth may be used to clean the indoor unit if it is very
dirty.
• Never use a damp cloth on the remote controller.
• Do not use a chemically treated duster on the unit or leave
this type of material on the unit to avoid damaging the nish.
• Do not use benzene, thinner, polishing powder, or similar
solvents for cleaning. These may cause the plastic surface
to crack or warp.
• Adjust the air direction up and down
a. Auto-swing: Press SWING for the louver to swing up and
down.
b. Manual swing: Adjust the louver to improve the cooling or
heating effect.
c. When cooling adjust the louver horizontally.
• Method for cleaning the air lter
a. The air filter can prevent the dust or other particles from
entering the unit. If the filter is blocked, the unit will not
work well. Clean the lter every two weeks when you use it
regularly.
b. If the air conditioner is positioned in a dusty place, clean
the lter often.
c. Replace the lter if it is too dusty to clean (the replaceable
air lter is an optional tting).
d. When heating adjust the louver downward.
Figure 12.1
Figure 13.1
Figure 13.2
Figure 13.3
Figure 13.4
Figure 12.2
13. Maintenance
1. Open the unit
• Open the unit by placing your ngers under the notches on the
sides of the cover and moving the cover outwards. Open the
cover fully to allow sufcient room to remove the lter.
3. Clean the air lter
• Dusts will accumulate on the lter along with the unit operation,
and need to be removed from the filter,or the unit would not
function effectively.
• Clean the lter every two weeks when you use the unit regularly.
• Clean the air lter with a vacuum cleaner or water.
a. The air intake side should face up when using a vacuum
cleaner. (Refer to Figure 13.3)
b. The air intake side should face down when using clean
water. (Refer to Figure 13.4)
• For excessive dusts, use a soft brush and natural detergent to
clean it and dry in a cool place.
2. Dismantle the lter
Gently push the lter upwards to release the notches, then pull the
lter out.

15
Caution
Caution
Caution
• Do not dry out the air lter under direct sunshine or with re.
• The air filter should be installed before the unit body
installation.
• When the power switch is connected, some energy will be
consumed even if the unit is not running. Disconnect the
power to save energy.
• A degree of dirt will accumulate when the unit has been used
several times, which will require cleaning.
• Take of the batteries from the remote controller.
• Do not attempt to inspect or repair this unit by yourself.
Arrange for a qualified technician to carry out all servicing
and maintenance.
4. Re-install the air lter.
5. Install and close the air inlet grille by reversing steps 1 and 2.
• Maintenance before stopping using the unit for a long time
(e.g., at the end of a season)
a. Let the indoor units run in fan only mode for about half a day
to dry the interior of the unit.
b. Clean the air lter and indoor unit casing.
c. Refer to “Cleaning the air lter" for details. Install cleaned air
lters back in their original positions.
d. Turn off the unit with the ON/OFF button on the remote
controller, and then unplug it.
• Maintenance after a long period of non-use
a. Check for and remove anything that might be blocking the
inlet and outlet vents of the indoor units and outdoor units.
b. Clean the unit casing and clean the lter. Refer to [Cleaning
the lter] and "Cleaning the lter" for instructions. Re-install
the lter before running the unit.
c. Turn on the power at least 12 hours before you want to use
the unit to ensure it works properly. As soon as the power is
turned on, the remote control display appears.
Symptom 1: The unit will not run
• Symptom: When the ON/OFF button on the remote controller is
pressed, the unit does not immediately start running.
Cause: to protect certain system components, system start-up or
re-start is intentionally delayed for up to 12 minutes under some
operating conditions. If the OPERATION LED on the unit's panel
is lighting, the system is working normally and the unit will start
after the intentional delay is complete.
• Heating mode is running when the following panel lights are
on:operation and the "DEF./FAN LED indicator.
Cause: the indoor unit activates protective measures because of
the low outlettemperature.
Symptom 2: The unit emits white mist
• White mist is generated and emitted when the unit starts to
operate in a very humid environment. This phenomenon will stop
once the humidity in the room is reduced to normal levels.
• The unit occasionally emits white mist when it runs in heating
mode. This occurs when the system nishes periodic defrosting.
Moisture that may accumulate on the unit's heat exchanger coil
during defrosting becomes mist and is emitted from the unit.
Symptom 4: Dust is emitted from the unit
• This can occur when the unit rst runs after a long idle period.
Symptom 5: The unit gives o󰀨 a strange odor
• If smells such as those of strong-smelling food or tobacco smoke
are present in the room, they can enter the unit, leave trace
deposits on the unit's internal components, and later be emitted
from the unit.
• Sections 15.2 and 15.3 describe some initial troubleshooting
steps that can be taken when an error occurs. If these steps do
not resolve the issue, arrange for a professional technician to
investigate the problem. Do not attempt further investigations or
troubleshooting yourself.
• If any of the following errors occur, power the unit off, contact
a professional technician immediately and do not attempt
troubleshooting yourself:
a. A safety device such as a fuse or circuit breaker frequently
blows/trips.
b. An object or water enters the unit.
c. Water is leaking from the unit.
14. Symptoms That Are Not Faults
15. Troubleshooting
15.1 General
The following symptoms may be experienced during the normal
operation of the unit and are not considered faults. Note: If you
are not sure whether a fault has occurred, contact your supplier or
service engineer immediately.

16
15.2 Unit Troubleshooting
Symptom Possible causes Troubleshooting steps
The unit does not start
A power cut has occurred (the power to the
premises has been cut-off). Wait for the power to come back on.
The unit is powered off.
Power on the unit. This indoor unit forms part of
an air conditioning system that has multiple indoor
units that are all connected. The indoor units cann’t
be powered on individually - they are all connected
to one, single power switch. Ask a professional
technician for advice regarding how to safely power
on the units.
The power switch fuse may haveburned out. Replace the fuse.
The remote controller’s batteries are dead Replace the batteries.
Air ows normally but
doesn’t cool The temperature setting is not correct Set the desired temperature on the remote controller.
The unit starts or stops
frequently
Arrange for a professional technician to check the following:
Too much or too little refrigerant.
• No gas in the refrigerant circuit.
• The outdoor unit compressors have malfunctioned.
• The power supply voltage is too high or too low.
• There is a blockage in the piping system.
Low cooing effect
Doors or windows are open. Close the doors and windows.
Sunlight is shining directly onto the unit. Close shutters/blinds to shield the unit from direct
sunlight.
The room contains many heat sources such as
computers or refrigerators.
Turn off some of the computers during the hottest part
of the day.
The unit’s air lter is dirty. Clean the lter.
The outside temperature is unusually high.
The cooling capacity of the system reduces as the
outdoor temperature rises and the system may
not provide sufficient cooling if the local climate
conditions are not considered when the system’s
outdoor units were selected.
Engage a professional air conditioning engineer to check the following:
• The unit’s heat exchanger is dirty.
• The unit’s air inlet or outlet is blocked.
• A refrigerant leak has occurred.
Low heating effect
Doors or windows are not completely closed. Close doors and windows.
Arrange for a professional technician to check the following:
A refrigerant leak has occurred.

17
15.3 Remote Controller Troubleshooting
Warning:
Certain troubleshooting steps that a professional technician may perform when investigating an error are described in this owner's manual for
reference only. Do not attempt to undertake these steps yourself – arrange for a professional technician to investigate the problem.
If any of the following errors occur, power the unit off and contact a professional technician immediately. Do not attempt troubleshooting yourself:
• A safety device such as a fuse or circuit breaker frequently blows/trips.
• An object or water enters the unit.
• Water is leaking from the unit.
Symptom Possible causes Troubleshooting steps
The fan speed cann’t be adjusted
Check whether the MODE indicated on the
display is “AUTO”.
In automatic mode, the air conditioner
will automatically change the fan’s
speed.
Check whether the MODE indicated on the
display is “DRY”.
When dry mode is selected, the air
conditioner automatically adjusts the
fan speed. (The fan speed can be
selected during “COOL”, “FAN ONLY”,
and “HEAT”.)
The remote controller signalis not
transmitted even when the ON/OFF
button is pushed
A power cut has occurred (the power to the
premises has been cut-off). Wait for the power to come back on.
The remote controller’s batteries are running out Replace the batteries.
The indication on the display disappears
after a certain time
Check whether the timer operation has come
to an end when TIMER OFF is indicated on the
display.
The air conditioner operation will stop
up to the set time.
The TIMER ON indicator goes off after a
certain time
Check whether the timer operation has come
to an end when TIMER ON is indicated on the
display.
Up to the set time, the air conditioner
will automatically star tand the
appropriate indicator will go off.
No receiving sound from the indoor unit
when the ON/OFF button is pressed
Check whether the signal transmitter of the
remote controller is properly directed to the
infrared signal receiver of the indoor unit when
the ON/OFF button is pressed.
Directly transmit the signal transmitter
of the remote controller to the
infraredsignal receiver of the indoor
unit, and then press the ON/OFF button
twice.

18
15.4 Error Codes
With the exception of a mode conict error, contact your supplier or service engineer if any of the error codes listed in the following table are
displayed on the unit's display panel. If the mode conict error is displayed and persists, contact your supplier or service engineer. These errors
should only be investigated by a professional technician. The descriptions are provided in this manual for reference only.
Notes:
Flashing rapidly means ashing twice per second; ashing slowly means ashing once per second.
Content Display output Possible causes
Mode conict E0 • The indoor unit’s operating mode conflicts with that of the outdoor
units.
Communication error
between indoor and
outdoor units
E1
• Communication wires between indoor and outdoor units not
connected properly.
• Interference from high voltage wires or other sources of
electromagnetic radiation.
• Communication wire too long.
• Damaged main PCB.
Indoor ambient
temperature sensor
(T1) error
E2
• Temperature sensor not connected properly or has malfunctioned.
• Damaged main PCB.
Indoor heat
exchanger mid-point
temperature sensor
(T2) error
E3
Indoor heat
exchanger outlet
temperature sensor
(T2B) error
E4
Fan error E6
• Fan stuck or blocked.
• Fan motor not connected properlyor has malfunctioned.
• Power supply abnormal.
• Damaged main PCB.
EEPROM error E7 • Damaged main PCB.
Indoor EEV coil error Eb
• Line loosened or broken.
• The electronic expansion valve in stuck.
• Damaged main PCB.
Outdoor unit error Ed • Outdoor unit error.
Water level error EE
• Water level oat stuck.
• Water level switch not connected properly.
• Damaged main PCB.
• Drain pump has malfunctioned.
indoor unit has not
been assigned an
address
FE • Indoor unit has not been assigned an address.