Ouellet SMD09KCHVS-I User manual

Please read this owner’s manual carefully
before operating the unit and keep it for future reference.
DUCTABLE UNIT
MULTIZONE HEAT PUMP
Owner’s Manual
INVERTER
9 000 to 24 000 BTU/hr
Models:
SMD09KCHVS-I
SMD12KCHVS-I
SMD18KCHVS-I
SMD24KCHVS-I

2
TABLE OF CONTENTS
Operation notices .................................................................................................................................................................3
Explanation of symbols ........................................................................................................................................................3
User notice ................................................................................................................................................................................4
Precautions................................................................................................................................................................................4
Working temperature range...............................................................................................................................................6
Preparation before installation..................................................................................................................................7
Outline dimensions of the indoor unit ...........................................................................................................................7
Required installation clearance distances diagram....................................................................................................7
Selection of installation location.......................................................................................................................................8
Requirements for electrical connection .........................................................................................................................9
Installation..............................................................................................................................................................................10
Installation of indoor unit ................................................................................................................................................. 10
Installation of air supply duct.......................................................................................................................................... 11
Drawings of the air supply outlet and returned air inlet....................................................................................... 12
Installation of return air duct........................................................................................................................................... 12
Installation of condensate pipe...................................................................................................................................... 13
Design of drain pipe ........................................................................................................................................................... 14
Installation of drain pipe ................................................................................................................................................... 14
Precaution for lift pipe ....................................................................................................................................................... 15
Test of drainaige system.................................................................................................................................................... 16
Piping ....................................................................................................................................................................................... 16
Insulation of refrigerate pipe........................................................................................................................................... 16
Wiring between the wire and the wiring terminal .................................................................................................. 17
Wiring of the power cord (single-phase)..................................................................................................................... 18
Wiring of the signal line of the wired controller....................................................................................................... 18
Electrical specications...................................................................................................................................................... 19
Malfunction............................................................................................................................................................................20
Malfunction analysis........................................................................................................................................................... 20
Maintenance..........................................................................................................................................................................21
Cleaning and maintenance.............................................................................................................................................. 21
Cleaning the lter ................................................................................................................................................................ 21

3
OPERATION NOTICES
EXPLANATION OF SYMBOLS
Indicates a hazardous situation that, if not avoided,
will result in serious injury or death.
Indicates a hazardous situation that, if not avoided,
could result in serious injury or death.
Indicates a hazardous situation that, if not avoided,
may result in minor or moderate injury.
Indicates important but not hazard-related information,
used to indicate risk of property damage.
Indicates a hazard and it is assigned to the signal words
DANGER, WARNING or CAUTION.
CAUTION
WARNING
NOTICE
DANGER

4
USER NOTICE
• The total capacity of the indoor units running at the same time cannot exceed 150% of the outdoor
unit capacity. Otherwise, the cooling or heating eect of each indoor unit will be poor.
• To ensure a successful startup, switch the main power on 8 hours before powering on the unit.
• After receiving the“O” signal, each indoor unit will continue to operate for 20 to 70 seconds to use the
remaining cool or warm air in the air exchanger while preparing for the next operation. This is normal.
• When the operating mode of the indoor unit is in conflict with that of the outside unit, a malfunction
light will blink for 5 seconds on the indoor unit display or on the controller to warn the user. Then the
indoor unit will stop. Change the operating mode of the indoor unit to match that of the outdoor unit
or with a compatible mode. COOL mode is compatible with DRY mode and FAN mode is compatible
with all operating modes.
• If the supply power fails when the unit is running, the indoor unit will send the“start” signal to the
outdoor unit three minutes after power recovery.
• This appliance is not intended for use by people (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they are under the 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 product must not be disposed together with the domestic waste. This product has to be disposed
at an authorized place for recycling of electrical and electronic appliances.
PRECAUTIONS
WARNING
Operation and Maintenance
• This appliance can be used by people (including children of 8 years old and above) with reduced phy-
sical, sensory or mental capabilities, or lack of experience and knowledge, as long as they are under
the supervision or instruction concerning use of the appliance by a person responsible for their safety.
• Children shall not play with the appliance.
• Cleaning and user maintenance shall not be made by children.
• Do not connect to multi-purpose socket. Otherwise, it may cause re hazard.
• Disconnect power supply when cleaning. Otherwise, it may cause electric shock.
• If the power supply wire is damaged, it must be replaced by a qualied person in order to avoid
a hazard.
• Do not wash with water to avoid electric shock.
• Do not spray water on indoor unit. It may cause electric shock or malfunction.
• After removing the lter, do not touch ns to avoid injury.
• Do not use re or hair dryer to dry the lter to avoid deformation or re hazard.
• Do not operate this unit with wet hands.
• Maintenance must be performed by qualied person. Otherwise, it may cause personal injury
or damage.

5
• Do not repair the appliance by yourself. It may cause electric shock or damage. Please contact a
qualied person when you need to repair it.
• Do not extend ngers or objects into air inlet or air outlet. It may cause personal injury or damage.
• Do not block air outlet or air inlet. It may cause malfunction.
• When below phenomenon occurs, please turn o the appliance and disconnect power immediately,
and then contact a qualied person for service:
- There’s abnormal sound during operation.
- Circuit break trips o frequently.
- The appliance gives o burning smell.
- Indoor unit is leaking.
• Do not use or place any flammable, combustible or noxious substance next to the unit.
• If the appliance operates in an inappropriate environment or under abnormal conditions, it may cause
malfunction, electric shock or re hazard.
• Keep good ventilation in the room to avoid oxygen decit.
• Do not step on top panel of outdoor unit, or put on heavy objects. It may cause damage or personal
injury.
• When the unit is not to be used for a long time, please cut o the main power supply of the unit.
• Before turning the unit o, make sure it has run for a minimum of 5 minutes; otherwise its service life
will be shortened.
WARNING
Wiring
• Installation must be performed by a qualied person. Otherwise, it may cause personal injury or
damage.
• Must follow the electric safety regulations when installing the unit.
• According to the local safety regulations, use qualied power supply circuit and circuit breaker.
• Install a circuit breaker of adequate capacity only used for the system; otherwise, it may cause mal-
function.
• An all-pole disconnection switch having a contact separation of at least 3 mm in all poles should be
connected in xed wiring.
• The appliance should be properly grounded. Incorrect grounding may cause electric shock.
• Make sure the power supply matches with the requirement of the appliance. Unstable power supply
or incorrect wiring may cause malfunction of the unit, electric shock or re hazard.
• Properly connect the live wire, neutral wire and grounding wire.
• Be sure to cut o the power supply before proceeding any work related to electricity and safety.
• Do not turn the power on before nishing installation.
• If the power supply or signal control wires are damaged, it must be replaced by a qualied person
in order to avoid problems.
• During installation, the communication cable and the power cord must not be twisted together but
instead separated with an interval of at least 2 cm, otherwise the unit is likely to run abnormally.
• The temperature of refrigerant circuit will be high, please keep the interconnection cable away from
the copper tube.

6
• The appliance shall be installed in accordance with national wiring regulations.
• Installation must be performed in accordance with the requirement of NEC and CEC by a qualied
person only.
• The heat pump is a rst class electric appliance. It must be properly grounded with specialized groun-
ding device by a qualied person. Please make sure it is always properly grounded, otherwise it may
cause electric shock.
• The yellow-green wire in the appliance is the grounding wire, which can’t be used for other purposes.
• The grounding resistance should comply with national electric safety regulations.
• All wires of indoor unit and outdoor unit should be connected by a qualied person.
• If the length of power connection wire is insucient, please contact the dealer for a new one. Do not
extend the wire yourself.
• After the electrical installation, take an electric leakage test.
WARNING
Location
• If you need to relocate the appliance to another place, only a qualied person can perform the work.
Otherwise, it may cause personal injury or damage.
• Select a location which is out of reach for children and far away from animals or plants. If it is unavoi-
dable, please add a fence around the outdoor unit for safety purpose.
• The location should be able to withstand the weight of the unit. Otherwise, the unit will fall and it may
cause injury or death.
• Instructions for installation and use of this product are provided by the manufacturer.
WORKING TEMPERATURE RANGE
Indoor side state Outdoor side state
Dry bulb temp.
°C (°F)
Wet bulb temp.
°C (°F)
Dry bulb temp.
°C (°F)
Wet bulb temp.
°C (°F)
Rated cooling 27 (80) 19 (67) 35 (95) 24 (75)
Max. cooling 27 (80) 19 (67) 46 (115) 24 (75)
Min. cooling 19 (67) 14 (57) 19 (67) 14 (57)
Rated heating 21 (70) 16 (60) 8 (47) 6 (43)
Max. heating 27 (80) – 24 (75) 18 (65)
Low ambient heating 21 (70) 16 (60) -15 (5) -16 (3)

7
PREPARATION BEFORE INSTALLATION
OUTLINE DIMENSIONS OF INDOOR UNIT
A
B
D
E
G
I
C
J
F
H
Backward
return air
Electric box Liquid pipe Gas pipe
Drain pipe
Downward return air
Models (in.) A B C D E F G H I J
SMD09KCHVSI 29 1/4 19 5/16 26 1/16 24 7/16 27 9/16 24 1/4 30 13/16 6 1/8 7 7/8 25
SMD12KCHVSI 29 1/4 19 5/16 26 1/16 24 7/16 27 9/16 24 1/4 30 13/16 6 1/8 7 7/8 25
SMD18KCHVSI 37 1/16 19 5/16 33 15/16 32 5/16 35 7/16 24 1/4 38 11/16 6 1/8 7 7/8 25
SMD24KCHVSI 45 19 5/16 41 13/16 40 3/16 43 5/16 24 1/4 46 9/16 6 1/8 7 7/8 25
Models (mm) A B C D E F G H I J
SMD09KCHVSI 742 491 662 620 700 615 782 156 200 635
SMD12KCHVSI 742 491 662 620 700 615 782 156 200 635
SMD18KCHVSI 942 491 862 820 900 615 982 156 200 635
SMD24KCHVSI 1142 491 1062 1020 1100 615 1182 156 200 635
REQUIRED INSTALLATION CLEARANCE DISTANCES DIAGRAM
˚
19 11/16"
500 mm
˚
9 7/8"
250 mm
Nut with
washer
Spring
pad

8
SELECTION OF INSTALLATION LOCATION
Basic requirements
Installing the unit in the following places may cause malfunction. If it is unavoidable, please consult
a qualied person:
• A place with strong heat sources, vapors, flammable or explosive gas or volatile objects spread in
the air.
• A place with high-frequency devices (such as welding machine, medical equipment).
• A place near coastal regions.
• A place with oil or fumes in the air.
• A place with sulphurous gas.
• Other places with special environment.
• In a laundry room, near a bath, shower or swimming pool.
Note:
The power cords and connection lines of the indoor and outdoor units must be at least 3.3 ft. (1 m) away
from the TV set or radio to avoid image interference and noise ( even if the clearance distance is kept,
noise may be produced due to strong electromagnetic wave).
Indoor unit
• This unit should be recessed mounted in the ceiling.
• There should be no obstruction near air inlet and air outlet.
• Select a location where the drain pipe can be easily connected to the outside.
• Select a location which is convenient to connect the outdoor unit and which is the closest possible
to the power supply.
• The location and hanger should be able to withstand the weight of indoor unit and will not increase
noise and vibration.
• Make sure that the installation follows the requirement of clearance distance diagram.
• Do not install the indoor unit right above an electric appliance.
• The indoor unit should not be exposed to direct sunlight.
• Please try your best to keep the unit away from fluorescent lamps.

9
REQUIREMENTS FOR ELECTRICAL CONNECTION
Safety precautions
• You must follow the electric safety regulations when installing the unit.
• According to the local safety regulations, use qualied power supply circuit and circuit break.
• Make sure the power supply matches with the requirement of the device. Unstable power supply
or incorrect wiring may cause malfunction and damage the unit or re hazard.
• Properly connect the live wire, neutral wire and grounding wire.
• Cut o the power supply before proceeding any work related to electricity.
• Do not turn on the power before nishing installation.
• The temperature of refrigerant circuit will be high, please keep the interconnection cable away from
the copper tube.
• The appliance shall be installed in accordance with national wiring regulations.
Grounding requirements
• The heat pump is a rst class electric appliance. It must be properly grounded by a qualied person
with specialized grounding device. Please make sure it is always grounded eectively, otherwise it
may cause electric shock.
• The yellow-green wire in the appliance is the grounding wire, which cannot be used for other pur-
poses.
• The grounding resistance should comply with national electric safety regulations.
• An all-pole disconnect switch having a contact separation of at least 3mm in all poles should be
connected in xed wiring.

10
INSTALLATION
INSTALLATION OF INDOOR UNIT
CAUTION
Installation must be performed in accordance with the NEC/CEC by authorized personnel only.
Prior to the installation of the indoor unit, make a good preparation for all piping
(refrigerant pipe, drain pipe) and wiring (wires of the wired controller, wires between
the indoor and outdoor unit) to make the further installation steps much easier.
Step 1: Install hangers
Insert the M10 expansion bolt into the hole, and then knock
the nail into the bolt.
Refer to the "Outline dimensions of indoor unit"section
for the distance between holes and to opposite drawing
for installation of the expansion bolts.
Step 2: Install the hangers on the indoor unit Step 3: Install the indoor unit on the ceiling
Hanger bolt Air conditioning unit
Anchor
NOTICE
• If there is an opening in the ceiling, it is best to reinforce it to keep the unit at and prevent it from
vibrating.
• If the ceiling is not strong enough to withstand the weight of indoor unit, a beam made of iron angles
can be used to x the unit.
• If the indoor unit is not installed in the air conditioning area, please use sponge around the unit to
prevent condensing. The thickness of the sponge depends on the actual installation environment.
NOTICE
İ1 7/8"
48 mm

11
Step 4: Horizontality check
After the installation of the indoor unit, its horizontality must be checked to make sure the unit keep hori-
zontal fore and aft and keep an inclination of 5° toward the drain pipe right and left, as shown below.
Horizontaly check device
INSTALLATION OF AIR SUPPLY DUCT
A) Rectangular air supply duct
4 6 83 75
1
2
3
Return air Return air Supply air
No. Name
1 Hanger
2 Return Air Duct
3 Canvas Duct
4 Return Air Inlet
5 Plenum Box
6 Filter Screen
7 Main Air Supply Duct
8 Air Supply Outlet
B) Round air supply duct
No. Name
1 Return Air Duct
2 Canvas Duct
3 Return Air Louver
4 Hanger
5 Air Supply Outlet
6 Transition Duct
7 Air Supply Duct
8 Diuser
9 Diuser Joint
1
2
4
3
5 6 7
8 9
• Preinstall the outlet of the round duct on the transition duct and then x it with the tapping screw.
• Place the transition duct to the air outlet of the unit and x it with rivets.
• Connect the outlet to the duct and then tighten them with tape. Other installation details are not
covered herein.
CAUTION
• The maximum length of the duct means the maximum length of the air supply duct plus the maximum
length of the return air duct.

12
• For the unit with the auxiliary electric heating function, if the round duct is to be adopted, then the
straight length of the transition duct cannot be less than 7 7/8 in. (200 mm).
• The duct is either rectangular or round and connected with the air inlet/outlet of the indoor unit.
Among all air supply outlets, at least one should be kept open. As for the round duct, it needs a
transition duct of which size should match with the air supply outlet of the unit. After the tting of
the transition duct, it is the turn of the round duct, which is better to be kept 32.8 ft. (10 m) away from
the corresponding diuser. The standard accessories supplied by the manufacturer is the transition
duct 7 7/8 in. (200 mm) long and round air outlet φ7 7/8 in. (200 mm). However, accessories with other
specications can be purchased from your local dealer.
DRAWINGS OF THE AIR SUPPLY OUTLET AND RETURN AIR INLET
Air supply outlet Return air inlet
21
A
B
D
C
Models ABCD
in. mm in. mm in. mm in. mm
SMD09KCHVSI 6 1/8 156 26 1/16 662 22 13/16 580 6 3/8 162
SMD12KCHVSI 6 1/8 156 26 1/16 662 22 13/16 580 6 3/8 162
SMD18KCHVSI 6 1/8 156 33 15/16 862 30 11/16 780 6 3/8 162
SMD24KCHVSI 6 1/8 156 41 13/16 1062 38 9/16 980 6 3/8 162
INSTALLATION OF RETURN AIR DUCT
• The default installation location of the rectangular
ange is in the back and the return air cover plate
is in the bottom, as shown on the opposite image.
• If the downward return air is desired, just change
the place of the rectangular ange and the return
air cover plate.
• Using rivets, connect one end of the return air duct
to the return air outlet of the unit and the other
end to the return air louver.
• To facilitate height adjustment, you may cut the canvas duct. Fold it and reinforce it using #8 iron wire.
• More noise is likely to be produced in the downward return air mode than the backward return air
mode. It is recommended that you install a muer and a plenum box to minimize the noise level.
• The installation method can be chosen by taking into consideration the building conditions and
maintenance as shown on image next page.
Rectangular ange
Backward return air
Downward return air
Return air cover plate

13
1
1
2
4
5
3
64
5
No. Name
1 Return Air Louver (with the lter screen)
2 Canvas Duct
3 Return Air Duct
4 Indoor Unit
5 Air Supply Duct
6 Access Grille
Wind supply
Wind supply
Back wind
Back wind
Downward return air (a)
Backward return air (b)
INSTALLATION OF CONDENSATE PIPE
• The condensate pipe should keep an inclination angle
of 5 to 10 ° to facilitate the drainage of the condensate
water.
• The joints of the condensate pipe should be insulated to
prevent condensing, as shown on opposite image.
• There is a condensate outlet on both left and right sides
of the unit. Once one is conrmed to be used, the other
should be clogged by a rubber plug, bundled by the
binding wire and insulated by the insulation material to
avoid water leakage.
• The outlet on the right side is defaulted to be clogged with a plug.
CAUTION
No water leakage is allowed on the joint of the condensate pipe.
Pipe lid
Insulating layer for
condensate pipe

14
DESIGN OF DRAIN PIPE
• The drain pipe should always keep an inclination angle (1/50 to 1/100) to avoid water gathering in
some places.
• Do not impose too much force on the drain pipe during installation.
• The drain pipe should be installed as close as possible to the device.
• The drain pipe can be standard hard PVC pipe which can be purchased locally. During the connection,
insert the end of the PVC pipe to the drain outlet, then tighten it with the drain hose and binding wire.
Never connect the drain outlet and the drain hose with adhesive tape.
• When the drain pipe is used with multiple devices, the shared section of the pipe should be 4 in.
(100 mm) lower than the drain hole of each device. It is also recommended to use thicker pipe for such
a purpose.
INSTALLATION OF DRAIN PIPE
• The diameter of the drain pipe should be larger than or
equal to that of the refrigerant pipe. (PVC pipe, outer
diameter: 1 in. (25 mm), wall thickness ≥ 1/16 in. (1.5
mm)).
• The drain pipe should be as short as possible and have
a slope of 1/100 degree minimum to avoid air pockets
formation.
• If the installation do not allow proper drain pipe slope,
a lift pipe should be installed.
• A distance of 3.3 to 4.9 ft. (1 to 1.5 m) should be kept
between the hangers to avoid curves in the drain hose.
• Insert the drain hose into the drain hole and tighten it with clamps.
• Wrap the clamps with a large amount of sponge for thermal insulation.
• The drain hose inside the room should also be insulated.
Clamp (accessory)
Clamp
(accessory)
Sponge (accessory)
Max. 4 mm
Sponge (gray) Drain Hose
NOTICE
3.3-4.9 ft.
(1-1.5 m)
with a min. degree of slope 1/100

15
PRECAUTIONS FOR LIFT PIPE
The installation height of the lift pipe should be less than 33 ½ in. (850 mm). It is recommended to set an
inclination angle of 1° to 2° for the lift pipe toward the drainage direction. If the lift pipe and the unit form
a right angle, the height of the lift pipe must be less than 31 ½ in. (800 mm).
1°2°
3.3-4.9
’
(1-1.5 m)
İ
39 3/8" 1000 mm
İ
33 1/2" 850 mm
İ 11 13/16"
300 mm
5 15/16" 150 mm
ķĸ
Hanger bracket
Clamp (accessory)
Drain hose (accessory)
Lift pipe
Ceiling
Notes:
• The inclination height of the drain hose should be within 3 in. (75 mm) so that the outlet of the drain
hose does not suer from external force.
• If multiple drain pipes converge, follow the installation steps below.
Max. 2 15/16"
75 mm
Max. 39 3/8"
1000 mm
Joint of drain pipe
The specication of the joint of the drain pipe should be suitable to the running capacity of the unit.
Drain hose (accessory)

16
TEST OF DRAINAGE SYSTEM
• After the electric installation, please take a test for the drainage system.
• During the test, check if the water ow goes through the pipe correctly and observe carefully the joint
to see if it leaks or not. If this unit is installed in the newly built house, it is suggested to take this test
prior to the ceiling decoration.
PIPING
• Aim the pipe joint at the corresponding bell mouth.
• Pre-tighten the union nut with hand.
• Place the open-end wrench on the pipe joint and
place the torque wrench on the union nut. Tighten
the union nut with torque wrench. Adjust the torque
force by referring to the following table.
• Wrap the indoor pipe and joint of connection pipe
with insulating pipe, and then wrap it with tape.
CAUTION
• During the connection of the indoor unit and the refrigerant pipe, never pull any joints of the indoor
unit by force; otherwise the capillary pipe or other pipes may crack, which would result in leakage.
• The refrigerant pipe should be supported by brackets. Do not let the unit withstand the weight of it.
• If the pipe diameter of the outdoor unit doesn’t match the piping connection size of the indoor unit,
use the piping connection size of the indoor unit and add the adaptor supplied with the indoor unit.
• The bending degree of the pipe cannot be too small; otherwise it will crack.
• Use a pipe tube bender to bend the pipe.
INSULATION OF REFRIGERANT PIPE
• The refrigerant pipe should be insulated with insulating
material and wrapped with tape in order to prevent
condensation and water leakage.
• The joints of the indoor unit should be wrapped with insu-
lating material and no gap is allowed as shown opposite. No Gap
pipe joint union nut pipe
open-end wrench
union nut
pipe
torque wrench
indoor pipe
Hex nut diameter Tightening torque
(N-m)
Φ 6 15~20
Φ 9.52 30~40
Φ 12 45~55
Φ 16 60~65
Φ 19 70~75
insulating pipe

17
• Wrap the pipe with tape.
• Bundle the refrigerant pipe and electric wire together with tape, and separate them from the drain
pipe to prevent the condensate water overflowing.
• Wrap the pipe from the bottom of the outdoor unit to the top of the pipe where it enters the wall.
During the wrapping, the later circle should cover half of the former one.
• Fix the wrapped pipe on the wall with clamps.
• Stu the gap between pipes and wall hole with sealing gum.
CAUTION
• Once the pipe is well insulated, never bend it to a small angle. Otherwise it will crack.
• Do not wrap the pipe too tightly; otherwise the insulation eect would be weakened.
• Make sure the drain pipe is separated from the refrigerant pipe.
WIRING BETWEEN THE WIRE AND THE WIRING TERMINAL
A) Wiring of the single-core wire
• Strip the insulating layer at the end of the wire about 1 in. (25 mm) o with a wire striper.
• Loosen the screw o on the wiring board of the air conditioning unit.
• Shape with the pliers at the end of the wire to a circle matching with the size of the screw.
• Let the screw go through the circle of the wire and then x it on the wiring board.
B) Wiring of the multi-core wire
• Strip the insulating layer at the end of the wire about 10 mm o with a wire striper.
• Loosen the screw o on the wiring board of the air conditioning unit.
• Fix a wiring terminal matching with the size of the screw to the end of the multi-core wire with the
crimpling pliers.
• Let the screw go through the terminal of the multi-core wire and then x it on the wiring board.
25
10
A) Single-Cored Wire B) Multi-Cored Wire
Wiring Terminal
Insulating Layer
WARNING
• If the power cord or the signal line is damaged, it must be replaced with a dedicated one.
• Prior to the wiring, please check the voltage marked on the nameplate and then carry out the wiring
following the wiring diagram.

18
• The dedicated power cord must be used for the air conditioning unit and the electrical leakage protec-
tion switch and air switch must be installed in case of overload condition.
• The air conditioning unit must be earthed to prevent the hazard caused by a failed insulation.
• During the wiring, the wiring terminal or the single-core wire must be used; the direct wiring between
the multi-core wire and wiring board would cause re.
• All wiring should be done strictly in accordance with the wiring diagram; otherwise the improper
wiring would cause the air conditioning unit running abnormally or cause damages.
• Do not let the electric wires touch the refrigerant pipe, the compressor, the fan or other moving parts.
• Do not modify the wiring inside the indoor unit randomly; otherwise the manufacturer won’t assume
any responsibility for the damage or abnormal running of the unit.
WIRING OF THE POWER CORD SINGLEPHASE
CAUTION
The power supply for each indoor unit must be uniform.
• Remove the electric box cover of the indoor unit.
• Let the power cord go through the rubber ring.
• Put the 4-core cable through the hole of the chassis and the bottom of the appliance upward, and
then connect the power line and the communication line from the outdoor unit to the corresponding
terminals N(1), 2, 3 , and grounding terminal of the indoor unit. Wiring shall be done properly as per
the wiring diagram. (Note: Be sure the wiring terminals A/B/C/D and piping joints A/B/C/D of the
indoor unit match with that of the outdoor unit respectively).
• Fix the power cord tightly with the binding wire.
WIRING OF THE SIGNAL LINE OF THE WIRED CONTROLLER
• Open the electric box cover of the indoor unit.
• Let the signal line go through the rubber ring.
• Insert the signal line to the four-pin socket on the printed circuit board of the indoor unit.
• Fix the signal line with the binding wire.

19
ELECTRICAL SPECIFICATIONS
Indoor Unit
Power Supply
Running
Current
(A)
Input Power (W) Recommended
Power Cord
(Sectional
AreaxPieces)
Type Model Indoor
Fan Motor Cooling Heating
Cooling
and
Heating
SMD09KCHVSI 208/230V  60HZ 0.406 75 575 AWG18X4
SMD12KCHVSI 208/230V  60HZ 0.348 65 865 AWG18X4
SMD18KCHVSI 208/230V  60HZ 0.428 80 1080 AWG18X4
SMD24KCHVSI 208/230V  60HZ 0.588 110 1610 AWG18X4
Note:
The sectional area listed above is applicable to the power cord with a length up to 49.2 ft. (15 m).
For longer cord, its sectional area should be enlarged to avoid the cord burning out caused by the
over-current.

20
MALFUNCTION
MALFUNCTION ANALYSIS
Please check below items before asking for servicing. If the malfunction still cannot be eliminated,
please contact a qualied person.
Errors Possible Causes
Failed startup
There is no power supply.
The breaker opens owing to electrical leakage.
Voltage is too low.
Stop after a short while of operation The air inlet/outlet of the indoor/outdoor unit is clogged.
Poor cooling eect
The air lter screen is too dirty or clogged.
There are too much heat sources or people in the room.
The door or window is open.
There are obstacles at the air inlet/outlet.
The set temperature is too high.
Poor heating eect
The air lter screen is too dirty or clogged.
The door or window is not closed fully.
The set temperature is too low.
Uncontrollable controller
If the remote controller crashes even if the batteries have been
replaced, please open the back cover of it and press the button
“ACL” to let it back to the normal condition.
Is the remoter controller in the signal receiving range?
Or is it blocked by obstacles?
For the duct type unit, operate the remote controller pointing
at the wired controller.