Nortek B-HW-2.2(07)-A3AK User manual

NORTEK GLOBAL HVAC, LLC
Owner's Manual
Heat Pump
Please read this owner’s manual carefully before operation and retain it for future reference
Specifications & illustrations subject to change without notice or incurring obligations
Multi Variable Heat Pump
Wall Mounted Type Indoor Unit
Models:
B-HW-2.2(07)-A3AK
B-HW-2.8(09)-A3AK
B-HW-3.6(12)-A3AK
B-HW-5.0(18)-A3AK
B-HW-7.1(24)-A3AK

Preface
For correct installation and operation, please read all instructions carefully. Before reading the
instructions, please be aware of the following items:
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible
personal injury or death.
WARNING
DANGER: Failure to comply may result in severe personal injury, property damage
and/or death..
CAUTION
CAUTION: Failure to comply may result in personal injury and/or property damage..
NOTICE is used to address practices not related to personal injury.
WARNING
(1) Instructions for installation and use of this product are provided by the manufacturer.
(2) Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel
only.
(3) For the safe operation of this unit, please read and follow the instructions carefully.
(4) During operation, total capacity of indoor units should not exceed the total capacity of outdoor units, otherwise,
poor cooling or heating performance may result.
(5) Direct operators or maintainers should keep this manual for future reference.
(6) If this unit fails to operate normally, please contact a qualified contractor as soon as possible and provide the
following information:
1) Content on the name plate (model number, cooling capacity, serial number, and manufacture date.
2)
Malfunction details (before and after the malfunction occurred).
(7) Each unit has been strictly tested and proved before shipping. In order to prevent units from being damaged or
malfunctioning because of improper service, please do not disassemble the unit by yourself. If you need
maintenance or service, please contact a qualified contractor.
(8) All graphics in this manual are for reference only. Manuals are subject to change by manufacturer without prior
notice.
(9) This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge.Children are not allowed to play on or near this appliance.
User Notice
DISPOSAL: Do not dispose this product as household waste. Special treatment is required.

Contents
1 Safety Precautions...................................................................................................... 1
2 Product Introduction.................................................................................................... 2
2.1 Outline of the Unit and Main Parts............................................................................... 3
2.2 Rated Operating Condition.......................................................................................... 3
3 Installation Instruction............................................................................................... 4
3.1 Schematic diagram of installation spaces ................................................................... 4
3.2 Requirements for Communication Line....................................................................... 4
3.3 Electric Installation....................................................................................................... 5
4 Installation Instructions................................................................................................ 6
4.1 Installation of Indoor Unit............................................................................................. 6
4.2 The installation of the rear panel................................................................................. 6
4.3 Debugging.................................................................................................................... 6
4.4 Preparation of the piping hole...................................................................................... 7
4.5 Installation of the drainage pipe................................................................................... 7
4.6 Installation the connection pipes ................................................................................. 8
5 Wiring Work................................................................................................................. 9
5.1 Connect Cables and Terminals of Wiring Board.......................................................... 9
5.2 Power Cord Connection............................................................................................... 9
5.3 Connection of Communication Line of IDU and ODU............................................... 10
5.4 Connection of Communication Line of Wired Controller........................................... 10
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network............... 10
5.6 Installation of the indoor unit.......................................................................................11
6 The Best Usage Method.............................................................................................12
7 Maintenance Method..................................................................................................12
7.1 Cleaning panel........................................................................................................... 13
7.2 Cleaning the air filters................................................................................................ 13
7.3 Check before the usage season................................................................................ 14
7.4 Check after the usage season................................................................................... 14
8 Table of Error Codes for Indoor Unit...........................................................................15
9 Malfunction Analyzing.................................................................................................16
9.1 Service center............................................................................................................ 16
9.2 After-sales service ..................................................................................................... 17
10 Adjusting Method Of The Air Direction......................................................................17
10.1 Adjusting air direction up and down......................................................................... 17
10.2 Adjusting air direction left and right.......................................................................... 17

Multi Variable Heat Pump WALL Mounted Type Indoor Unit
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1 Safety Precautions
WARNING
(1) Follow this instruction to complete the installation work. Please read this manual carefully before unit
startup and service.
(2) Wire size of power cord should be sized correctly. The damaged power cord and connection wire should
be replaced by specialized cable.
(3) After connecting the power cord, please affix the electric box cover properly.
(4) Never fail to comply with the nitrogen charge requirements.Charge nitrogen when welding pipes.
(5) Never short- circuit or cancel the pressure switch to prevent unit damage.
(6) Connect the wired controller before energization; otherwise wired controller could be damaged.
(7) Before using the unit, please check if the piping and wiring are correct to avoid water leakage, refrigerant
leakage, electric shock, or fire, etc.
(8) Do not insert fingers or objects into air outlet/inlet grille.
(9) Open the door and window and keep good ventilation in the room to avoid oxygen deficit when gas/oil
heating equipment is used.
(10) Never start up or shut off the air conditioner by plugging or unplugging the power cord.
(11) Let the unit run for at least five minutes after startup; otherwise it will affect oil return of the compressor.
(12) Do not allow children operate this unit.
(13) Do not operate this unit with wet hands.
(14) Turn off the unit or cut off the power supply before cleaning, otherwise electric shock or injury
may occur.
(15) Never spray or flush water towards unit, otherwise malfunction or electric shock may occur.
(16) Do not expose the unit to the wet or corrosive conditions.
(17) Under cooling mode, please don't set the room temperature too low. Keep the temperature difference
between indoor and outdoor unit within 5°C (9˚F).
(18) User is not allowed to repair the unit. Faulty service may cause electric shock or fire. Please
contact a qualified service technician for help.
(19) Before installation, please check if the power supply matches the requirements specified on the
nameplate.
(20) Installation should be conducted by dealer or qualified personnel. Please do not attempt to install the unit
yourself. Improper handling may result in water leakage, electric shock or fire etc.

Multi Variable Heat Pump WALL Mounted Type Indoor Unit
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(21) Be sure to use the appropriate accessories and parts to prevent the water leakage, electric shock and
fire .
(22) Make sure the unit can be grounded properly and securely to avoid electric shock. Please do not connect
the ground wire to gas pipe, water pipe, lightning rod or telephone line.
(23) Connect power to the unit 8 hours before operation. Do not cut off the power when it will not be used for a
short period of time, i.e. overnight (to protect the compressor).
(24) If refrigerant leakage occurs during installation, please ventilate immediately. Toxic gas will resuslt if the
refrigerant gas meets spark or open flame.
(25) Volatile liquid, such as paint thinner or gasoline will damage the unit appearance.Only use soft cloth with
a little mild detergent to clean the outer casing of unit.
(26) If anything abnormal occurs (such as burning smell), please power off the unit and cut off the main power
supply, and then immediately contact a licensed contractor. If the problem persists, the unit might be damaged
and lead to electric shock or fire.
(27) In standby status, the unit will use a little power for maintaining normal communication and preheating
refrigerant. if the unit won’t be used for an extended period of time, cut off the power of the complete unit. The
system will require power to be connected 8 hours before operation the next time it is used..
Manufacturer will not assume responsibility for any personal injury or property loss caused
by improper installation, improper debugging, unnecessary repair, or not following the instructions
of this manual.

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2 Product Introduction
2.1 Outline of the Unit and Main Parts
NOTICE! The appearances will be different for 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
2.2 Rated Operating Condition
Item
Indoor Side Condition
Outdoor Side Condition
Dry Bulb Temp°C
(°F)
Wet Bulb Temp °C
(°F)
Dry Bulb Temp °C
(°F)
Wet Bulb Temp °C
(°F)
Rated Cooling
27(80.6)
19(66.2)
35(95)
24(75.2)
Rated Heating
20(68.0)
15(59.0)
7(44.6)
6(42.8)
Indoor Unit Working Temperature Range:16°C ~32°C(60.8 °F ~89.6 °F) .

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3Installation Instruction
3.1 Installation clearances
Above
Sides
Below
Front
15cm (6 in.)
15cm (6 in.)
250 cm (8 ft.)
300 cm (10 ft.)
(1) The unit shall be installed by the professional personnel according to this
installation manual.
(2) Please contact a qualified contractor for installation. Manufacturer will not be responsible for any
malfunction caused by a unit that is not installed by a qualified contractor.
(3) After installation, air conditioner should not be moved and reinstalled at another location..
(4) The appliance shall not be installed in a laundry room.
(5) The indoor unit should be installed at least 2.3m (7.5 ft) above the floor.
3.2 Requirements for Communication Line
NOTICE! If the unit is installed in or near a strong electromagnetic field, shielded wire must
be used for the communication wire between indoor unit and controller. Twisted pair line
with shielding function must be unsed on the communication wire between indoor units
and indoor unit(s) to outdoor unit.
3.2.1 Select communication line for indoor unit and wired controller
Fig 3.2.1
Material type
Total length of
communication line
between indoor unit
and wired controller
L (m/feet)
Wire size (mm2/AWG)
Material
Standard
Remarks

Multi Variable Heat Pump WALL Mounted Type Indoor Unit
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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
60227-5:2007
1. Total length of communication
line can't exceed 250m (820feet).
2. The cord shall be Circular cord
(the cords shall be twisted
together).
3. If unit is installed in or near
strong electromagnetic field, use
shielded wire.
3.2.2 Select communication line for indoor unit and indoor unit (outdoor unit)
Fig 3.2.2
Material Type
Total Length L (m/feet)
of Communication
Cable between Indoor
Unit and Indoor
(Outdoor) Unit
Wire size
(mm2/AWG)
Materi
al
Standa
rd
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:
2007
1. If the wire diameter is enlarged to 2×1
mm2(2×AWG16), the total
communication line length can reach
1500 m (4900 feet).
2. The cord shall be Circular cord (the
cords shall be twisted together).
3. If unit is installed in or near strong
electromagnetic field , use shielded wire.
3.3 Electric Installation
Model
Power Supply
MCA(A)
MOP(A)
B-HW-2.2(07)-A3AK
208/230V-1ph-60Hz
1
15
B-HW-2.8(09)-A3AK
1
15
B-HW-3.6(12)-A3AK
1
15
B-HW-5.0(18)-A3AK
1
15
B-HW-7.1(24)-A3AK
1
15
(1) Use copper wire only as unit’s power cord. Operating temperature should be within its rated value.
(2) If the power cord is more than 15m (49 feet) long, proportionally increase the sectional area of power
cord to avoid overload.
(3) Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at 40°C (104°F)
ambient temperature when laying across plastic pipe. Air switch is D type and used at 40°C (104°F). If
actual installation condition varies, please lower the capacity according to the specifications of power
cord and air switch provided by manufacturer.
(4) Install cut-off device near the unit. The minimum distance between each stage of cut-off device should be
3mm(1/8 inch)(The same for both indoor unit and outdoor unit).
(5) If the supply cord is damaged, it must be replaced by a qualified technician in order to avoid a hazard.

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4 Installation Instructions
4.1 Installation of Indoor Unit
Fig 4.1
Below are dimensions of W, H, and D.:
Unit:mm/inch
Item
Model
W
H
D
B-HW-2.2(07)-A3AK
B-HW-2.8(09)-A3AK
843
(33-3/16)
275
(10-13/16)
180
(7-1/16)
B-HW-3.6(12)-A3AK
B-HW-5.0(18)-A3AK
940
(37)
298
(11-3/4)
200
(7-7/8)
B-HW-7.1(24)-A3AK
1008
(39-11/16)
319
(12-9/16)
221
(8-11/16)
4.2 The installation of the rear panel
Fig 4.2
(1) Use a level to hang the rear panel. 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.
(2) Attach the rear panel on the wall with bolts.
(3) After installing the rear panel, check to see that it is mounted securely. The panel should
support 60kg/130 lbs., and the weight shared by every bolt should be evenly distributed.
(4) The diameter showed in Fig. 4.2 is 65mm (2-1/2 in.).
4.3 Debugging
NOTICE! Setting main indoor unit must be done after completing installation of. Otherwise,

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the whole system will report “L7” error and will not operate!
The indoor unit defaults to be slave indoor unit. During debugging, if master indoor unit hasn’t
been set manually, the outdoor unit will designate one indoor unit as the master indoor unit
automatically. The master indoor unit can be reset by the remote controller or wired controller.
4.3.1 Setting by remote controller
Point the remote controller at the light board or wired controller
In fan mode, set master mode indoor unit through ▲ and ▼ button:
(1) Adjust set temperature to 30°C (86°F) .
(2) Within 5 seconds, press ▼ button and then press ▲ button three times.
After finishing setting, “UC” is displayed on receiver light board for 5 seconds and “MASTER”
icon is displayed on wired controller.
4.3.2 Setting by wired controller
4.4 Preparation of the piping hole
(1) Make the piping hole (Φ65mm/2-1/2 in.) 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.
4.5 Installation of the drainage pipe
(1) For proper draining, the drain hose should be placed at a downward slope.
(2) Do not wrench or bend the drain hose or flood end in standing water. (Fig. 4.4)
(3) Wrap the drain hose with heat resistant material.
Fig 4.5

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4.6 Installation the connection pipes
Connect the ends of the connection pipe with two leading pipes, and then tighten the joint
nuts.
Connect the connect pipe with the two relative leading pipe, tie the nut on tie –in of the
connect pipe tightly.
Notes:
①Be careful not to damage the connection pipes by bending them.
②If the flare nut is over tightened, leakage it could develop a leak.

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5 Wiring Work
WARNING
Before accessing terminals, all supply circuits must be disconnected.
(1) Units must be grounded securely, or it may cause electric shock.
(2) Please carefully read the wiring diagram. Faulty wiring could cause malfunction or even damage the unit.
(3) The unit should be powered by dedicated circuit and socket.
(4) The wiring should be in accordance with related regulations in order to ensure reliable operation of the
unit.
(5) Install circuit breaker for branch circuit according to related regulations and electrical standards.
(6) Keep cable away from refrigerant pipings, compressor and fan motor.
(7) The communication wires should be separated from power cord and connection wire between indoor unit
and outdoor unit.
(8) Adjust the static pressure via wired controller as needed.
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)
①Strip about 25mm (1 in.) insulation off the wire end with stripping tool.
②Remove the wiring screws from the terminal board.
③Shape the tail of wire into ring with needle nose pliers with the loop matching the screw.
④Use the screwdriver to tighten the terminal.
(2) The connection of stranded wire (as shown in Fig. 5.1.2)
①Strip about 10mm (3/8 in.) insulation off the end of stranded wire with stripping tool.
②Loosen the wiring screws on terminal board.
③Insert the wire into the ring tongue terminal and tighten with crimping tool.
④Use the screwdriver to tighten the terminal.
Fig 5.1.1 Fig 5.1.2
5.2 Power Cord Connection
NOTICE! All indoor units must be on a single power supply so that they can be powered

Multi Variable Heat Pump WALL Mounted Type Indoor Unit
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ON/OFF at the same time.
Fig 5.2
For units with single-phase power supply.
(1) Detach the electric box lid.
(2) Lead the power cord through the wiring holes.
(3) Connect the power cord to terminal "L, N, ".
(4) Fix the power cord with wiring clamp.
(5) The wire diameter of power cord can’t be less than 18AWG.
5.3 Connection of Communication Line of IDU and ODU
(1) Open the cover of electric box on indoor unit.
(2) Lead the communication line through 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.
Fig 5.3.1 Fig 5.3.2
(4) Secure the communication line to the electric box with the wire.
(5) In order to ensure the reliability of communication between IDU and ODU and the
communication among each IDU, add a matched resistance (supplied with system) 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 through the rubber ring.
(3) Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board.
(4) Secure the communication wire to the electric box with wire clip.

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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. One must be set as master; and one,
slave.
(4) One wired controller can control up to 16 indoor units in maximum at the same time.
(1) The indoor units must be the same type if they are controlled by the same wired controller.
(2) When the indoor unit is controlled by two wired controllers, the addresses of the two wired controllers
should have different address settings. Address 1 is for main controller. Address 2 is for slave controller.
Detailed setting please refer to the instruction manual of wired controller.
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)
Cut down tailings 1 when only the power cord is led.
Cut down tailings 1,2 (or 1,2,3) when the connection cord and wire are led.
The piping types ①,②,③are recommended.
(2) Lead the tubing and cord 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 secure.
(4) Guarantee that the installation height of the indoor unit should be 2.5m (8 ft.) above the
floor.
Fig 5.6

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6 The Best Usage Method
NOTICE! Do not pour water to unit or clean it with water, otherwise a malfunction or electric shock
may occure.
(1) It is recommended that the thermostat be set for efficient operation. It is best to set the
indoor temperature to within 5°C (9°F) of the outdoor temperature.
(2) For more efficient heating affect adjust the louvers downward. For better cooling affect
adjust the louvers more horizontal.
(3) When the air conditioner is running, don’t leave windows or doors open.
(4) Cooled air should circulate through the room and not blow directly on individuals in the
room.
(5) Do not mistreat the power cord and the communication cord. The damaged power cord
and communication cord can only be replaced approved parts.
(6) This air conditioner cannot be used for drying clothes, refrigerating food, etc.

Multi Variable Heat Pump WALL Mounted Type Indoor Unit
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7 Maintenance Method
(1) Turn off the unit and cut off the main power supply when cleaning the air conditioner to avoid electric
shock or injury.
(2) Use a ladder or other stable platform when cleaning the unit.
(3) Do not clean the unit with hot water whose temperature is higher than 45°C (113 °F) to prevent fading or
warping.
(4) Do not dry the filters over open flame to avoid warping.
(5) Volatile liquid such as paint thinner or gasoline will damage the appearance of the air conditioner. (Only
soft dry cloth or damp cloth moistened with mild detergent to clean the surface panel of the air
conditioner.)
(6) Please contact a qualified service technician if there is a malfunction.
7.1 Cleaning panel
Take down panel before cleaning.
(1) Pull along the direction of arrows to take down the panel.
(2) Clean the panel
Clean it with a soft-hair brush, water and mild detergent, and then dry it.
(3) Reinstall 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 filters once every 3 months. If environment is very dusty, it should be cleaned more
frequently.
(1) Take down the air filter
As shown in Fig. 7.2.1, 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 (such as an oil stain), warm water
(lower than 45°C (113°F) ) with mild detergent can be used, then dry it in the shade.
②Do not clean the filter by hot water higher than 45°C (113°F) to prevent fading or warping.
③Do not dry filter over open flame or it could warp or catch fire.

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(3) Reinstall air filter
Install the air filter properly along the arrow direction. The side marked “Front” is indicat
㈡ed on the filter. Replace the panel.
Fig 7.2.1 Fig 7.2.2
7.3 Preseason checklist
(1) Check if the inlet or outlet vent of the air conditioner is blocked.
(2) Check if the ground wire is securely attached.
(3) Check if the batteries in the wireless remote controller need replacing.
(4) Check if the air filter has been installed properly
Air conditioner must be connected to power supply for 8 hours before startup or compressor
could be damaged.
7.4 Post seasonal checklist
(1) Clean filter and body of air conditioner.
(2) Cut off the main power supply to air conditioner.

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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

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9 Malfunction Analysis
WARNING
Do not repair the air conditioner by yourself. Faulty repair could lead to electric shock or fire. Please contact a
qualified technician to have the unit. Check the following items before contacting the service center, as it could
save you time and expense.
Malfunction Phenomena
Malfunction Analyzing
The air conditioner could not start up
just after turned off
The over load protection switch requires a 3 minute delay before unit will
run again
Unit emits an odor after just turning
on.
Odors or cigarette smoke which has been absorbed is discharged.
Slight clicking was heard when the
unit was running
This is the sound of the running refrigerant
Mist came from the air outlet vent
when cooling
Indoor air is cooled rapidly
Creaking sound was heard when the
unit was running or after it was
turned off
It is the normal sound of the panel and other parts expanding or
contracting due to temperature change.
The air conditioner failed to run
Is the power supply cut off?
Is the power supply connected?
Is the circuit breaker properly set?
Is the voltage too high or too low
Is the TIMER set on the wireless remote controller?
Poor cooling (heating) effect
Is the thermostat set properly?
Is the inlet, outlet vent of the outdoor unit blocked?
Is the air filter too dirty to cause blockage?
Are windows and doors closed? Is the air speed too low?
Is there other heat source in the room?
The wireless remote controller won’t
work
In the event that the battery is replaced but the wireless remote control
still malfunctions, then open the back cover and press ”ACL” button to
reset it.
When the air conditioner functions are changed too frequently, the
wireless remote controller may malfunction. To resume the normal
operation de-energize and then re-energize the wireless controller.
Is the controller close enough to the air conditioner to receive the signal?
Is there an obstacle blocking the signal? Do the batteries need
replacing?
9.1 When to contact a service technician
When the following conditions occur, please stop operating immediately, cut off the main
power supply of the unit and then contact the service.
Harsh sound heard when running;
The fuse or circuit breaker trips frequently;
Substance or water pulled in the unit involuntarily;

Multi Variable Heat Pump WALL Mounted Type Indoor Unit
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Water leakage in room;
Power cord overheated;
Unusual or burning odor is given off when running.
9.2 After-sales service
If quality or other problems arise, contact a qualified technician.
10 Adjusting the Air Direction
10.1 Adjusting air direction up and down
(1) The wireless remote controller can make the guide louver swing up and down, or makes
the guide louver stop at a certain.
(2) Press the SWING button on the wireless remote controller to make the guide louver
swing up and down; Repress again to stop the operation.
10.2 Adjusting air direction left and right
Moving the vertical louver left and right can adjust direction of airflow, or adjust the air outlet to
reach every corner of the room with 3 different outlet directions to make the indoor temperature
more even.