Haier AB052MCERA User manual

134
5. MINI 4-way cassette type indoor unit
5.1 Features
• Compact design
• New panel design 620*620mm
• Low sound level

135
MINI 4-way cassette
type indoor unit
5.2 Specication
Model AB052MCERA(M) AB072MCERA(M) AB092MCERA(M)
Power supply V-Ph-Hz 220-240/1/50/60 220-240/1/50/60 220-240/1/50/60
Cooling
Capacity kBtu/h 5.1 7.5 9.5
Capacity kW 1.5 2.2 2.8
Power Input W 17 17 17
Current A 0.2 0.2 0.2
Heating
Capacity kBtu/h 5.8 8.5 10.9
Capacity kW 1.7 2.5 3.2
Power Input W 17 17 17
Current A 0.2 0.2 0.2
Heating capacity at low temp. kW / / /
Operating current A 0.2 0.2 0.2
INDOOR
MOTOR
Brand Broad Ocean Broad Ocean Broad Ocean
Model ZW465C03 ZW465C03 ZW465C03
Type DC DC DC
Insulation Class B B B
IP Class IP40 IP40 IP40
Power Input W 35 35 35
Power output W 26 26 26
Capacitor μF ///
Speed (High/Middle/Low) rpm 500/430/380 520/450/400 520/450/400
INDOOR
FAN
Brand Haier Haier Haier
Type Centrifugal Centrifugal Centrifugal
Quantity 1 1 1
INDOOR
COIL
a. Number of rows 111
b. Tube pitch(a)x row pitch(b) mm 21*13.3 21*13.3 21*13.3
c. Fin spacing mm 1.35 1.35 1.35
d. Fin type (code) Hydrophilic aluminum
e. Tube outside dia. and type mm Φ7 Φ7 Φ7
f. Coil length x height x width mm 1330*147*13.3 1330*147*13.3 1330*147*13.3
g. Number of circuits 555
Cabinet
Cabinet Coating Type Galvanized Galvanized Galvanized
Cabinet Salt Spray Test
Duration Hour 100 100 100
Control Box IP Class IP40 IP40 IP40

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Model AB052MCERA(M) AB072MCERA(M) AB092MCERA(M)
Construction
Sheet Metal Thickness 0.8 0.8 0.8
Drain Pan Material PS PS PS
Drain Pan Insulation 20 20 20
Drain Pump Option Standard 1200mm Standard 1200mm Standard 1200mm
Branch Outlet Option no no no
Indoor Wall
Material Hot zinc plate Hot zinc plate Hot zinc plate
Thickness mm 0.8 0.8 0.8
Double or Single Skin Single Single Single
Air Filter
Material PP PP PP
Mesh 100 100 100
Pressure Drop Pa 5 5 5
Piping
dimension
Liquid pipe mm 6.35 6.35 6.35
Gas pipe mm 9.52 9.52 9.52
Drain hose mm Φ32 Φ32 Φ32
Panel
Model PB-620KB PB-620KB PB-620KB
Dimension mm 620/620/60 620/620/60 620/620/60
Packing mm 660/660/115 660/660/115 660/660/115
Net weight kg 2.8 2.8 2.8
Gross weight kg 4.5 4.5 4.5
Fresh air dimension mm Ф100 Ф100 Ф100
Sound pressure level (H/M/L) dB(A) 32/30/29 32/30/29 32/30/29
Sound power level (H/M/L) dB(A) 46/44/43 46/44/43 46/44/43
Standard static pressure Pa 0 0 0
Indoor air ow (H/M/L) m3/h 650/540/430 700/590/480 700/590/480
Dimension (W*H*D) mm 570/570/260 570/570/260 570/570/260
Packing (W*H*D) mm 718/680/380 718/680/380 718/680/380
Net weight kg 16 16 16
Gross weight kg 19 19 19
Norminal condition: indoor temperature (cooling): 27°C DB/19°C WB, indoor temperature (heating): 20°C DB Outdoor
temperature(cooling): 35°C DB/24°C WB, outdoor temperature(heating): 7°C DB/6°C WB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity
meter. It is a sound pressure noise level.

137
MINI 4-way cassette
type indoor unit
Model AB122MCERA(M) AB162MCERA(M) AB182MCERA(M)
Power supply V-Ph-Hz 220-240/1/50/60 220-240/1/50/60 220-240/1/50/60
Cooling
Capacity kBtu/h 12.3 15.3 19.1
Capacity kW 3.6 4.5 5.6
Power Input W 18 26 35
Current A 0.2 0.2 0.2
Heating
Capacity kBtu/h 13.6 17.1 21.5
Capacity kW 4 5 6.3
Power Input W 18 26 35
Current A 0.2 0.2 0.2
Heating capacity at low temp. kW / / /
Operating current A 0.2 0.2 0.2
INDOOR
MOTOR
Brand Broad Ocean Broad Ocean Broad Ocean
Model ZW465C03 ZW465C03 ZW465C03
Type DC DC DC
Insulation Class B B B
IP Class IP40 IP40 IP40
Power Input W 35 35 35
Power output W 26 26 26
Capacitor μF ///
Speed (High/Middle/Low) rpm 650/520/450 650/520/450 650/520/450
INDOOR
FAN
Brand Haier Haier Haier
Type Centrifugal Centrifugal Centrifugal
Quantity 1 1 1
INDOOR
COIL
a. Number of rows 222
b. Tube pitch(a)x row pitch(b) mm 21*13.3 21*13.3 21*13.3
c. Fin spacing mm 1.35 1.35 1.35
d. Fin type (code) Hydrophilic aluminum
e. Tube outside dia. and type mm Φ7 Φ7 Φ7
f. Coil length x height x width mm 1330*147*26.6 1330*147*26.6 1330*147*26.6
g. Number of circuits 10 10 10
Cabinet
Cabinet Coating Type Galvanized Galvanized Galvanized
Cabinet Salt Spray Test
Duration Hour 100 100 100
Control Box IP Class IP40 IP40 IP40

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Model AB122MCERA(M) AB162MCERA(M) AB182MCERA(M)
Construction
Sheet Metal Thickness 0.8 0.8 0.8
Drain Pan Material PS PS PS
Drain Pan Insulation 20 20 20
Drain Pump Option Standard 1200mm Standard 1200mm Standard 1200mm
Branch Outlet Option no no no
Indoor Wall
Material Hot zinc plate Hot zinc plate Hot zinc plate
Thickness mm 0.8 0.8 0.8
Double or Single Skin Single Single Single
Air Filter
Material PP PP PP
Mesh 100 100 100
Pressure Drop Pa 5 5 5
Piping
dimension
Liquid pipe mm 6.35 6.35 6.35
Gas pipe mm 12.7 12.7 12.7
Drain hose mm Φ32 Φ32 Φ32
Panel
Model PB-620KB PB-620KB PB-620KB
Dimension mm 620/620/60 620/620/60 620/620/60
Packing mm 660/660/115 660/660/115 660/660/115
Net weight kg 2.8 2.8 2.8
Gross weight kg 4.5 4.5 4.5
Fresh air dimension mm Ф100 Ф100 Ф100
Sound pressure level (H/M/L) dB(A) 33/30/29 33/30/29 34/32/30
Sound power level (H/M/L) dB(A) 47/44/43 47/44/43 48/46/44
Standard static pressure Pa 0 0 0
Indoor air ow (H/M/L) m3/h 700/590/480 700/590/480 700/590/480
Dimension (W*H*D) mm 570/570/260 570/570/260 570/570/260
Packing (W*H*D) mm 718/680/380 718/680/380 718/680/380
Net weight kg 19 19 19
Gross weight kg 22 22 22
Norminal condition: indoor temperature (cooling): 27°C DB/19°C WB, indoor temperature (heating): 20°C DB Outdoor
temperature(cooling): 35°C DB/24°C WB, outdoor temperature(heating): 7°C DB/6°C WB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity
meter. It is a sound pressure noise level.

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MINI 4-way cassette
type indoor unit
5.3 Dimension
SN Part Name
1Connection port of gas pipe
2Connection of liquid pipe
3Wiring connection port of motor/
pumping motor
4 Connect drain pipe
5 Inlet grill
6 Outlet grill
7Drain hose(Accessory)
When inlet grill is closed, the least
reserved space is 200mm
※
Decoration board620
Decoration board620
Pipe connection
diagram
Connect drain pipe
⑥
⑤
535(Gap betwwn
supending rod)
570(Indoor units)
590(Celing open)
Indoor units570
*At least 1500
Less than100
⑦
60
Space needed for
installation
*At least 1500
*At least 1500
*At least 1500
*Electric box maintenance window
600×600
*Electric box
Raisetolessthan
750
285
140
180
310
310
170
210
176
195
30 25
55
200 Adjustable(0-360)
Suspending
bolt
4-M8~M10
1
2
60 60
750
175
③
④
275
210
Less than 10
175
210
4-M3.2reserved hole
100
(Directinstallation)
60 60
Greater than 1000resreved space
Less than 2700 to the wall
（Installedathighplace）
580
580

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5.4 Piping diagram
M
Fan
TC1
TC2
Indoor heat exchanger Gas pipe
(Flared joint) (Flared joint)
Liquid pipe
Filter EEV Filter
TA

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MINI 4-way cassette
type indoor unit
5.5 Wiring diagram
PCB SW03
SW01
N
L
Y/R
BL(B)
BR(R)
T5A/250VAC
AC220V
LED5
PUMP
CN4
GB
M
CN22-1
CN22
CN16
CN21
CN31 CN31-1
CN46-1 CN46
CN34 CN24
CN13 CN14 CN23 CN27
CN36 CN26
CN41
PMV
Float switch
CN33
RK
WIFI
4
DC FAN
CN35
CN1
Tc1 Tc2 TA
2
2
RELAY
10
Display Board
Q
PAC
B
Wired Controller
3
Wired Controller
WHY G
CN38 CN17 CN20
CN11-1 CN11 CN7
RR
CN9 CN10
CN19 CN18
WHWHWH
RWH
RWH
WH
CN15
B
CN43 CN28
SST
TTL-PCPM2.5HUM
R
L-RXD
YWHB WH
R
485-PC
G
5
WH
CN8
WH
WH
BL WH
LED1
LED2
LED3
LED4
LED6
WH
Wire Controller With Indoor Unit Error Indicate Indoor Unit &Outdoor Unit
LED1、2 LED3、4
LED5
LED Definition
Colours: B:Black BL:Blue BR:Brown G:Green R:Red WH:White Y:Yellow
Symbol: Comm.add:communication address CC.add:Central Control address
Communication
With Outdoor
3
L-TXD
10
Swing4/1 Swing2/3
WH
B
AB052-182MCERA(M) PCB code：0151800244BA

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5.6 Electric characteristics
Units Power supply Indoor fan motor Power input (w)
Model Phase FQY Voltage Volt.
range MCA MFA Output (W) FLA Cooling Heating
AB052MCERA(M) 1 50/60 220 198~242 0.325 1.04 26 0.26 17 17
AB072MCERA(M) 1 50/60 220 198~242 0.325 1.04 26 0.26 17 17
AB092MCERA(M) 1 50/60 220 198~242 0.325 1.04 26 0.26 17 17
AB122MCERA(M) 1 50/60 220 198~242 0.325 1.04 26 0.26 18 18
AB162MCERA(M) 1 50/60 220 198~242 0.325 1.04 26 0.26 26 26
AB182MCERA(M) 1 50/60 220 198~242 0.325 1.04 26 0.26 35 35
Symbols:
MCA: Min. circuit amps (A)
MFA: Max. fuse amps of circuit breaker
Output: Fan motor rated output (w)
FLA: Full load amps (A)
Note:
1. Voltage range
The units are applicable for the electrical systems where voltage supplied to unit is in the range.
2. Maximum allowable voltage unbalance between phases is 2%.
3. MCA=1.25*FLA MFA≤4*FLA
4. Power supply uses the circuit breaker.

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MINI 4-way cassette
type indoor unit
5.7 Air velocity and temperature distribution
a. Cooling / Air velocity distribution
Cooling
Blowy angle: 40
Air velocity distribution
1.5m/s 1.5m/s
1.0m/s 1.0m/s
0.5m/s
2.7m
2m
2m2m
1m
1m1m4m 3m 3m 4m
0m
0m
0.5m/s
b. Cooling / Temperature distribution
Cooling
Blowy angle: 40
Temperature distribution
27
℃
5℃2
22℃
22℃
27℃
25℃
2.7m
2m
1m
0m
4m 3m 2m 1m 0m 1m 2m 3m 4m

144
2.7m
2m
1m
0m
1.5m/s 1.5m/s
1.0m/s 1.0m/s
0.5m/s
2m2m 1m1m4m 3m 3m 4m0m
0.5m/s
c. Heating / Air velocity distribution
Heating
Blowy angle: 70
Air velocity distribution
d. Heating / Temperature distribution
Heating
Blowy angle: 70
Temperature distribution
22℃
27℃
25℃
22℃
25℃
27℃
4m 3m 2m2m 1m1m 3m 4m0m
2.7m
2m
1m
0m

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MINI 4-way cassette
type indoor unit
5.8 Sound pressure level
1) Testing illustrate:
2) Testing condition:
a: Unit running in the normal condition
b: Test in the semi-anechoic chamber
c: Noise level varies from the actual factors,
such as room structure, etc.
1.5M
Octave band sound pressure level dB Octave band sound pressure level dB
10
63 125 250 500 1000 2000 4000 8000
10
20 20
30 30
40 40
50 50
60 60
70 70
Octave band center frequency (Hz) Octave band center frequency (Hz)
AB052-092MCERA(M) AB122-182MCERA(M)
Limit of
audible
continuous
noise
Limit of
audible
continuous
noise
63 125 250 500 1000 2000 4000 8000

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5.9 Installation
4.9.1Parts and functions
Indoor unit
Wind deector
(Regulate wind direction with remote controller)Electrical cabinet
Inlet grid
Air cleaner (In inlet grid)

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MINI 4-way cassette
type indoor unit
4.9.2 Safety
■If the air conditioner is transferred to a new user, this manual shall be transferred to the user, together with the
conditioner.
■Before installation, be sure to read Safety Considerations in this manual for proper installation.
■The safety considerations stated below is divided into " Warning" and " Attention". The matters on severe
accidents caused from wrong installation, which is likely to lead to death or serious injury, are listed in "
Warning". However, the matters listed in " Attention" are also likely caused the severe accidents. In general,
both of them are the important items related to the security, which should be strictly abided by.
■After the installation, perform test run to make sure everything is in normal conditions, and then operate and
maintain the air conditioner in accordance with the User Manual. The User Manual should be delivered to the
user for proper keeping.
WARNING
■Please ask the special maintenance station for installation and repair. Water leakage, electric shocks or re
accidents might be caused from improper installation if you conduct the installation by your own.
■The installation should be conducted properly according to this manual. Water leakage, electric shocks or re
accidents might be caused from improper installation.
■Please make sure to install the air conditioner on the place where can bear the weight of the air conditioner. The
air conditioner can't be installed on the grids such as the non-special metal burglar-proof net. The place with
insufcient support strength might cause the dropdown of the machine, which may lead to personal injuries.
■The installation should be ensured against typhoons and earthquakes, etc. The installation unconformable to the
requirements will lead to accidents due to the turnover of the machine.
■Specic cables should be used for reliable connections of the wirings. Please x the terminal connections reliably
to avoid the outside force applied on the cables from being impressed on the cables. Improper connections and
xings might lead to such accidents as heating or re accidents.
■Correct shapes of wirings should be kept while the embossed shape is not allowed. The wirings should be reliably
connected to avoid the cover and the plate of the electrical cabinet lapping the wiring. Improper installation might
cause such accidents as heating or re accidents.
■While placing or reinstalling the air conditioner, except the specic refrigerant (R410A), don't let the air go into the
refrigeration cycle system. The air in the refrigeration cycle system might lead to the cracking or personal injuries
due to abnormal high pressure of the refrigeration cycle system.
■During installation, please use the accompanied spare parts or specic parts. If not, water leakage, electric
shocks, re accidents or refrigerant leakage might be caused.
■Don't drain the water from the drainpipe to the waterspout where may exist harmful gases such as sulfureted gas
to avoid the harmful gases entering into the room.
■During installation, if refrigerant leakage occurs, ventilation measures should be taken, for the refrigerant gas
might generate harmful gases upon contacting the ame.
■After installation, check if any refrigerant leakage exists. If the refrigerant gas leaks in the room, such things as air
blowing heaters and stoves, etc. may generate harmful gases.
■Don't install the air conditioner at the places where the ammable gases may leak. In case the gas leakage
occurs around the machine, such accidents as re disasters may be caused.
■The drainpipe should be properly mounted according to this manual as to ensure the smooth drainage. In
addition, heat preservation should be taken to avoid condensation. Improper drainpipe mounting might cause
water leakage, which will get the articles at home wet.
■The refrigerant gas pipe and liquid pipe should be heat insulated to preserve heat. For inappropriate heat
insulation, the water caused from the condensation will drop to get the article at home wet.

148
■The air conditioner should be effectively grounded. Electric shocks may occur if the air conditioner is ungrounded
or inappropriately grounded. The wire for earthing shouldn't be connected to the connections on the gas pipe,
water pipe, lightning rod or telephone.
■The breaker for electricity leakage should be mounted. If not, accidents such as electric shocks may happen.
■The installed air conditioner should be checked for electricity leakage by being powered.
■If the ambient humidity bigger than 80%, when the water discharge hole be blocked or the lter becomes dirty,
or airow speed change, there maybe leads to condensing water drop down, and at the same time there maybe
some drops of water spit out.
CAUTION
■It is not allowed to put any heating apparatus
under the indoor units, for the heat may cause
distortion of the units.
■Pay attention to the aeration
condition to avoid anoxic
symptom.
■Flammable apparatus should not be placed in the
place where the air conditioner wind could reach
directly, or incomplete burning of
the apparatus may be caused.
■Check the mount table of the
air conditioner for damage for a long period of
operation.
■If placed on the damaged table, the unit may
drop down causing damage.
■Plants and animals should not be put to the place
where wind of the air conditioner blows directly,
otherwise damage to them may be caused.
■It cannot be used for the preservation of food,
living creature, precise instrument and artworks,
etc, otherwise damage may occur.
■Use the fuse with proper capacity.
■Metal wires and copper wires, etc., may
cause re or other faults.
■Do not use water heater or like next to the indoor
unit and the wired controller. Water/power
leakage or short circuit may happen if the
steam generating apparatus is working next to
machine.
■Defrosting during heating
■To improve the heating effect, the outdoor unit
will perform defrosting automatically when frost
appears on the outdoor unit during heating
(approximately 2-10 min). During defrosting, the
fan of the indoor unit runs at a low speed
or stops while that of the outdoor unit stops
running.
■Do not touch the switch with the wet hand to avoid
power shock.
■Power should be cut off when the air conditioner
is left unused for a long period. Power will be
consumed if the air conditioner is not powered
off. The power switch of the outdoor unit switch
should be powered on 12 hours in advance before
operation to protect the unit after a long period of
storage.
■3-minute protection
■To protect the unit, compressor can be actuated
with at least 3-minute delay after
stopping.
■Close the window to avoid outdoor
air getting in.
■Curtains or window shutters can be put down
to avoid the sunshine.
■Stop running and switch off the manual power
switch when cleaning the unit.
■During the operation of the control unit, don't
switch off the manual power
switch and the controller can
be used. Please do not press
the liquid crystal zone of
controller to prevent damage.
■Cleaning the unit with water may cause
electric shock.
■Do not put ammable spray close to the air
conditioner.
■Don't inject ammable spray towards the air
conditioner, which may cause re.
■Stopping fan rotation
■The unit which stops operating will actuate the
fan for a 2-8 min swing every 30-60 minutes for
protecting the unit while other indoor unit are in the
operating state.
■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.
Attention
Notices during Operation

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MINI 4-way cassette
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4.9.3 Maintenance
Attention
■Repair can only be performed by professional personnel.
■Before touching the connection line, all power supplies should be switched off. Only after switching off the
power supply can the operator clean the air conditioner as to avoid electric shock or injury.
■When cleaning the air cleaner, make sure to use a stable platform; don't ush the air conditioner with water, or
the electric shock might be caused.
Daily Maintenance:
Clean the air cleaner & air inlet grid.
■Don't dismantle the air cleaner if not cleaning, or faults might be caused.
■When the air conditioner operates in the environment with too much dust, clean the air conditioner more times
(generally once every two weeks).
1. Remove the air inlet grid as shown in the gure: press down the two locks on the grid (as shown in Fig. 1) to
move it close to the nearby grid, gently lift it 45 degree (as shown in Fig. 2), and then remove the air inlet grid.
2. Dismantle the gauze: press the outer frame of the air inlet grid by the thumb, and draw the base angle of gauze
by the forenger and pull it out as to make the gauze disengage the locks, and dismantle the gauze (as shown in
Fig. 3).
Fig. 1 Fig. 2 Fig. 3
press down the locks
lock device
lock port
remove air inlet grid
locks
bottom of gauze
lock device
frame of air inlet grid
■Cleaning
■Clean the air cleaner with the dust collector or water to remove dusts.
■For too much dust, use the fan or directly spray the special cookware detergent on the air inlet grid, and then
clean it with water after 10 minutes.
■(A) Remove dust with dust collector.
(B) For too much dust, use soft-hair brush and mild detergent to clean.
(C) Throw off water and then dry it at cool places.
Cleaning Air Cleaner
■Don't clean it with hot water of over 50°C to avoid fading or distortion.
■Don't dry it on the re, or the cleaner might cause re.
Attention

150
Installing air cleaner and air inlet grid:
1. Mounting the gauze: opposite to the ways of dismantling the gauze
(as shown in Fig. 3 above).
2. Mounting the air inlet grid: as shown in the right gure, nip the
locks on the grid as directed by arrows, put the side with the lock
device into the lock port, and then put the side with locks into the
panel frame. Release the locks to position the grid after determining
that the grid is abutting upon the bottom of the panel frame.
lock device
lock port
locks
insert air inlet grid
Cleaning the air outlet port and the shell:
■Don't use gasoline, benzene, diluents, polishing powder or liquid insecticide to clean them.
■Do not clean them with hot water of above 50°C to avoid fading or distorting.
Attention
■Wipe them with soft dry cloth.
■Water or neutral dry cleanser is recommended if the dust cannot be removed.
■The Wind Deector can be dismantled to clean (as below).
Cleaning Wind Deector:
■Do not wipe the wind deector with water forcibly to avoid the oss falling off.
Maintenance before and after Operating Season
Before Operating Season:
After Operating Season:
1. Please make the following checkup:
■There is no blockage in inlet port and outlet port of outdoor and indoor units.
■The ground line and the wiring are in the proper state.
If abnormal condition occurs, consult the after-service personnel.
2. Clean the air cleaner and the shell.
■After cleaning, the air cleaner must be mounted.
3. Switch it on to the power.
■After cleaning, the air cleaner must be mounted.
1. In sunny days, blowing operation can be performed for half a day to make the inside of machine dry.
2. Switch it off.
■Electrical power should be cut down to economize electricity, or the machine will still consume power.
3. Clean the air cleaner and the shell.
■Air cleaner and shell must be mounted after cleaning. For cleaning details, refer to Maintenance.

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MINI 4-way cassette
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4.9.4 Fault checkup
Please check the following when consigning repair service:
All these are not problems
Symptoms Reasons
Water ow sound
Water ow sound can be heard when starting operation, during operation or
immediately after stopping operation. When it starts to work for 2-3 minutes,
the sound may become louder, which is the owing sound of refrigerant or
the draining sound of condensed water.
Cracking sound
During operation, the air conditioner may make the cracking sound, which
is caused from the temperature changes or the slight dilation of heat
exchanger.
Terrible smell in outlet air The terrible smell, caused from walls, carpet, furniture, clothing, cigarette
and cosmetics, attaches on the conditioner.
Flashing operating indicator When switching it on again after power failure, turn on the manual power
switch and the operating indicator ashes.
Awaiting indication
It displays the awaiting indication as it fails to perform refrigerating operation
while other indoor units are in heating operation. When the operator set it
to the refrigerating or heating mode and the operation is opposite to the
setting, it displays the awaiting indication.
Sound in shutdown indoor
unit or white steam or cold air
To prevent oil and refrigerant from blocking the shutdown indoor units,
refrigerant ows in the short time and make the sounds of refrigerant
owing. Otherwise, when other indoor units perform heating operation,
white steam may occur; during refrigerating operation, cold air may appear.
Clicking sound when
switching
the air condition on
When the conditioner is powered on, the sound is made due to the resetting
of the expansion valve.
Please make another check.
Start or stop working
automatically Check if it is in the state of Timer-ON and Timer-OFF.
Failure to work Check if there is a power failure.
Check if the manual power switch is turned off.
Check if the supply fuse and breaker are disconnected.
Check if the protective unit is working.
Check if refrigerating and heating functions are selected simultaneously
with the awaiting indication on line control.
Bad cooling & heating effects
Check if air intake port and air outlet port of outdoor units are blocked.
Check if the door and windows are open.
Check if the ltering screen of air cleaner is blocked with sludge or dust.
Check if the setting of wind quantity is at low wind.
Check if the setting of operation is at the Fan Operation state.
Check if the temperature setting is proper.
Under the following circumstances, immediately stop the operation, disconnect the manual supply switch and
contact the after-service personnel.
■When buttons are inexible actuated;
■When fuse and breaker have been burnt over and over;
■When there are foreign objects and water in the refrigerator;
■When it cannot still be operated after removing the operation of protective unit;
■When other abnormal conditions occur.

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4.9.5 Installation procedures
The standard attached accessories of the units of this series refer to the packing list; prepare other accessories
according to the requirements of the local installation point of our company.
Indoor units should be installed in places with the environment of even circulation of cool and warm blows. The
following places should be avoided.
■Places with high salinity (beach), high sulfureted gas(such as the thermal spring regions where copper tubes
and soft soldering are easy to be eroded), much oil(including mechanical oil) and steam; places where organic
substance solvent is used; where special spray is frequently used;
■Places where machines generate the high frequency electromagnetic wave (abnormal condition will appear in the
control system);
■Places where there is high humidity exists near the door or windows (dew is easily formed).
Warning:
Protect the machine from gales or earthquake, make the installation according to the regulations. Improper
installation will cause accidents due to the overturn of the air conditioner.
(1) Where there is enough room for the machine above the ceiling;
(2) Where the drainpipes can be well arranged;
(3) Where the distance between the air outlet port of the machine and the oor is not more than 2.7m;
(4) Where air inlet & outlet of the indoor units are not blocked;
(5) Where it is hard enough to bear the weight of the unit;
(6) Where there are no television, piano and other valuables under the indoor units as to avoid condensate
dropping down, causing damage.
(7) Where it is over 1m away from the television and radio as to avoid the disturbance from television and radio.
Ensure the required space for installation and maintenance (refer to the following drawings).
The installation height should be kept within 2.7m.
When the height of the ceiling exceeds 2.7m, the warm air is hard to blow to the ground.
1. Select the following places to install indoor units.
Installation Space
Outlet
1500mm 1500mm
320mm
Over 2500mm
OutletInlet

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MINI 4-way cassette
type indoor unit
2. Location Relationship among Ceiling Hole, Unit and Hoisting Studs
Gap between studs 535mm
Ceiling 590mm
Decorated board 620mm
Indoor unit 570mm
Indoor unit 570mm
The ceiling and decorated board overlapping part should
be more than 25mm
ceiling decorated board
150
mm
260
mm
30mm
Note:
Before suspending the indoor unit, select the installation location according to the piping and wiring in the ceiling,
and determine the lead direction of the piping. Prepare all pipes (refrigerator and drainage) and wiring (connection
line for remote control and connection line of indoor units and outdoor units) connected to indoor units before
suspending the indoor unit so as to make the connections right after the installation.
■In the situation with the ceiling, before suspending the unit, set refrigerant pipe, drainpipe and connection line in
the room, lead wire of line control to the locations of piping and wiring.
■Conrm the size of the indoor unit and x it according to the requirements in the manual.
(1) Cut and withdraw the foundation of ceiling according to the size of indoor unit.
(2) After cutting an appropriate hole, reinforce the cutting area on the foundation of indoor unit, and append the rim
to the ceiling to secure its foundation. In order to prevent the ceiling from vibrating, it is vital to reinforce the ceiling
foundation and ensure the original levelness of the ceiling.
3. Ceiling Hole & Reinforcement