Hisense AMW2-12U4RRA Operating manual

TECHNICAL & SERVICE MANUALV5.0
—MULTI-SPLIT TYPE AIR CONDITIONERS
R410A
Refrigerant
R410A
Refrigerant
R410A
Refrigerant
R32
Refrigerant
Models:
<OutdoorUnit>
AMW2-12U4RRA
AMW2-14U4RRA
AMW2-18U4RXA
AMW3-21U4RFA
AMW3-24U4RFA
AMW3-24U4RAA
AMW4-27U4RAA
AMW4-36U4RAA
AMW5-42U4RTA

SAFETY SUMMARY
IMPORTANT NOTICE
●We pursue a policy of continuing improvement in design and performance of products. The right is
therefore reserved to vary specifications without notice.
●We cannot anticipate every possible circumstance that might involve a potential hazard.
●This air conditioner is designed for standard air conditioning only. Do not use this air conditioner for
other purposes such as drying clothes, refrigerating foods or for any other cooling or heating process.
Do not let the air-out face animals or plants, it might have an adverse effect on them.
●The installer and system specialist shall secure safety against leakage according to local regulations
or standards.
●Signal words (DANGER, WARNING and CAUTION) are used to identify levels of hazard seriousness.
Definitions for identifying hazard levels are provided below with their respective signal words.
●Installation should be performed by the dealer or another professional personnel. Improper installation
may cause water leakage, electrical shock, or fire.
●Do not perform installation work, refrigerant piping work, drain piping and electrical wiring connection
without referring to our installation manual. If the instructions are not followed, it may result in a water
leakage, electric shock or a fire.
●Use refrigerant R32 in the refrigerant cycle.
●Do not pour water into the indoor or outdoor unit. These products are equipped with electrical parts. If
poured, it will cause a serious electrical shock.
●Do not open the service cover or access panel for the indoor or outdoor units without turning OFF the
main power supply.
●Do not touch or adjust safety devices inside the indoor or outdoor units. If these devices are touched
or readjusted, it may cause a serious accident.
●Refrigerant leakage can cause difficulty in breathing due to insufficient air. Turn OFF the main switch,
extinguish any naked flames and contact your service contractor, if refrigerant leakage occurs.
●Do perform air-tight test. Do not charge oxygen, acetylene or other flammable and poisonous gases
into the refrigerant cycle when performing a leakage test or an air-tight test. These types of gases are
extremely dangerous and can cause an explosion. It is recommended that nitrogen be used for this
test.
●The installer and system specialist shall secure safety against refrigerant leakage according to local
regulations or standards.
●Use an ELB (Electric Leakage Breaker). In the event of a fault, there is danger of an electric shock or
a fire if it is not used.
Immediate hazards which WILL result in severe personal injury or death.
Hazards or unsafe practices which COULD result in severe personal injury or
death.
Hazards or unsafe practices which COULD result in minor personal injury or
product or property damage.
Useful information for operation and/or maintenance.
●Do not use any sprays such as insecticide, lacquer, hair spray or other flammable gases within
approximately one (1) meter from the system.

●If circuit breaker or fuse is often activated, stop the system and contact your service contractor.
●Check that the ground wire is securely connected. If the unit is not correctly grounded, it will lead
to electric shock. Do not connect the ground wiring to gas piping, water piping, lightning
conductor or ground wiring for telephone.
●Before performing any brazing work, check to ensure that there is no flammable material around
when using refrigerant. Be sure to wear leather gloves to prevent cold injuries.
●Protect the wires, electrical parts, etc. from rats or other small animals.
If not protected, rats may gnaw at unprotected parts, which may lead to fire.
●Fix the cables securely. External forces on the terminals could lead to a fire.
●Install the air conditioner on a solid base that can support the unit weight. An inadequate base or
incomplete installation may cause injury in the event the unit falls off the base. Incomplete
connections or clamping may cause terminal overheating or fire.
●Make sure that the outdoor unit is not covered with snow or ice, before operation.
●Do not step or put any material on the product.
●Do not put any foreign material on the unit or inside the unit.
●It is recommended that the room be ventilated every 3 to 4 hours.
●The air conditioner may not work properly under the following circumstances.
The power transformer provides the same power with the air conditioner. The electrical equipment
is too close to the power supply of the air conditioner. With the sharp change of power
consumption and switching action, the power supply of the air conditioner will generate a large
induction surge voltage.
CHECKING PRODUCT RECEIVED
●Upon receiving this product, inspect it for any shipping damage. Claims for damage, either apparent
or concealed, should be filed immediately with the shipping company.
●Check the model number, electrical characteristics (power supply, voltage and frequency) and
accessories to determine if they are correct.
The standard utilization of the unit shall be explained in these instructions.
Therefore, the utilization of the unit other than those indicated in these instructions is not
recommended.
Please contact your local agent, as the occasion arises.
The figures in this manual are based on the external view of a standard model.
Consequently, the shape may differ from that of the air conditioner you have selected.

1. General..................................................................................................................................................1
1.1 Features........................................................................................................................................1
1.2 Product lineup...............................................................................................................................3
1.3 Nomenclature ...............................................................................................................................3
1.4 Unit installation .............................................................................................................................4
1.5 Working range...............................................................................................................................4
1.6 Product appearance .....................................................................................................................5
2. Specifications ........................................................................................................................................7
3. Outlines and dimensions .......................................................................................................................9
4. Electrical data .....................................................................................................................................15
5. Capacities and selection data..............................................................................................................16
5.1 Capacity characteristic charts.....................................................................................................16
5.2 Piping length correction factor ....................................................................................................20
5.3 Correction factors according to defrosting operation ..................................................................22
6. Sound pressure data ...........................................................................................................................23
7. Refrigerant cycle..................................................................................................................................25
8. Wiring diagram ....................................................................................................................................27
8.1 Electrical wiring diagrams ...........................................................................................................27
8.2 Control board picture ................................................................................................................. 32
8.3 Common wiring...........................................................................................................................37
9. Field setting .........................................................................................................................................39
9.1 Outdoor unit DIP switch ..............................................................................................................39
9.2 Running parameter query ...........................................................................................................41
10. Piping work and refrigerant charge....................................................................................................44
10.1 MAX. length allowed .................................................................................................................44
10.2 Oil trap ......................................................................................................................................44
10.3 Air tight test ...............................................................................................................................45
10.4 Additional refrigerant charge.....................................................................................................45
11. Installation tools and installation flow chart........................................................................................46
11.1 Necessary tools and instrument list for installation .................................................................. 46
11.2 Installation flow chart ................................................................................................................47
12. Control mode .....................................................................................................................................48
13 Sensor parameter...............................................................................................................................50
14. Troubleshooting .................................................................................................................................56
14.1 Trouble guide ...........................................................................................................................56
14.2 Fault codes ...............................................................................................................................60
15. Checking components ......................................................................................................................69
15.1 Check refrigerant system..........................................................................................................69
15.2 Check parts unit .......................................................................................................................71
16. Disassembly and assembly for compressor and motor.....................................................................74
Multi-Split Type Air Conditioner Ser vice Manual
Table of Contents

1. GENERAL
1. General
1.1 Features
Twin Rotary DC Inverter Compressor
The twin rotary inverter compressor design reduces
friction during operation for smoother rotation with less
vibration, while also preventing leakage of refrigerant gas
during compression. The result is a far quieter and more
efficient air conditioner.
3-DC Inverter Technology
3-DC Inverter technology allows for extremely accurate
control of compressor rotation speed, saving roughly 50% more energy than traditional
air conditioners, Moreover, it guarantees and fan motor greatly reduce the loss owed to
the typical owing dispersion of AC motors and more efficiently reaches the set
temperature.
Electronic Expansion Valve
Inside the outdoor unit is the electronic expansion valve, which regulates and optimizes
the refrigerant quantity to all running indoor units.
Self Recovery of Power Break
When the power supply is recovered after break, all preset
are still effective and the air-conditioner can run according to
the original setting.
1

1. GENERAL
Comfortable temperature control
DC inverter power control uses its full capacity at startup to cool/warm quickly. As soon
as the set temperature is reached, it carefully adjusts current frequency to prevent
temperature fluctuation and energy loss.
Long piping lengths for installation flexibility
The ample maximum piping length of 60 m permits more freedom in the placement of air
conditioner units and enables you to optimise interior space.
Variety Indoor & Outdoor Unit Type
The new line-up expands the range of layout options both indoors and outdoors.
More methods, more conveniently.
Option Remote Controller
A variety of convenient controller systems permit individual control of settings such as
temperature, airflow volume, and operation duration.
2

1. GENERAL
1.2 Product lineup
Outdoor Unit
●--- available model
1.3 Nomenclature
Model(Btu/h)
Type 12K 14K 18K 21K 24K 27K 36K 42K
Dual ●● ●
Trio ●●
Quattro ● ●
Up to 5 indoor units ●
A M W 2- 14 U 4 R R A
Refrigerant type
S: R410A F:R22
Air Conditioner
Multi-split
Outdoor Unit Code
Version
3
Cooling Capacity: 14x10 Btu/h
Quantityofindoorunits
Type of Product
D: Duct, Cassette, V: Ceiling & Floor, F: Floor-standing, W: Outdoor Unit
Type of Mode:
U:DC-Invert HP,H:FixedspeedHP,C:H:FixedspeedCO
Power Supply
2: 220-230V ~/60Hz 4: 220-240V ~/50Hz 6:380-415V~/50Hz
3

1. GENERAL
1.4 Unit installation
With the DC inverter technology, one outdoor unit can be connected with 5 indoor units at
most. The combination rate range is from 80% to 130%.
Model (Btu/h) Max. Combined Quantity of Indoor Units
12K/14K/18K 2
21K/24K 3
27K/36K 4
1.5 Working range
Power Supply
Working Voltage 176V ~ 253V
Voltage Imbalance Within a 3% deviation from each voltage at the main terminal of outdoor unit
Starting Voltage Higher than 85% of the Rated Voltage
Operating temperature range
This air conditioner is designed for the following outdoor operating temperatures.
Type Mode Outdoor operating temperature (℃)
maximum minimum
Multi-Split Air Conditioner
(Heat pump type)
Cooling Operation 48 -15
Heating Operation 24 -15
Storage condition:
Temperature -25~60℃
Humidity 30%~80%
42K 5
4

1. GENERAL
1.6 Product appearance
Outdoor Unit
Type Capacity (Btu/h) View
Dual
12K/14K
18K
Trio
21K/
AMW3-24U4RFA
AMW3-24U4RAA
Quattro 27K/36K
5

1. GENERAL
Type Capacity (Btu/h) View
1 to 5 indoor units 42K
6

2. SPECIFICATIONS
2. Specifications
Type (Free Match) up to 2 indoor units up to 2 indoor units up to 2 indoor units up to 3 indoor units up to3indoor units up to 3 indoor units up to 4 indoor units up to 4 indoor units up to 5 indoor units
EU Model Name 2AMW35U4RRA 2AMW42U4RRA 2AMW50U4RXA 3AMW60U4RFA 3AMW72U4RFA 3AMW70U4RAA 4AMW81U4RAA 4AMW105U4RAA 5AMW125U4RTA
Model Name AMW2-12U4RRA AMW2-14U4RRA AMW2-18U4RXA AMW3-21U4RFA AMW3-24U4RFA AMW3-24U4RAA AMW4-27U4RAA AMW4-36U4RAA AMW5-42U4RTA
Gas R32 R32 R32 R32 R32 R32 R32 R32 R32
Performance
Capacity
Pdesign
Cooling kW 3.5 4.1 5.2 6.3 7.2 7.0 8.0 10.0 12.5
Pdesign
Heating kW 3.8 4.2 5.5 5.5 5.5 7.5 8.0 8.0 10.5
Cooling kW 3.5(1.0～4.1) 4.1(1.4～5.5) 5.2(1.8～6.6) 6.3(2.02~8.45) 7.2(2.09~9.65) 7.0(3.0～10.0) 8.0(2.6～11.5)10.0(2.6～11.5)12.5(3.8～15.3)
Btu/h 11942
(3412~1398) 13990 (4780~18766) 17740 (6142~22519) 21495 (6892~28831) 24566 (7131~32925) 23890 (10240~34130) 27300 (8870~39250) 34130 (8870~39250) 4265 0(12960~52200)
Heating kW 3.85(1.25～4.75) 4.5(0.9～5.6) 6.0(1.4～7.2) 7.2(1.9~8.85) 7.92(2.0~10.0) 8.0(2.3～10.0) 9.0（2.2～12.0) 11.0（2.2～12.0) 13.5（6.7～17.2)
Btu/h 13136
(4265~16207) 15354 (3070~19100) 20472 (4777~24566) 24566 (6482~30196) 27023 (6875~34120) 27300 (7850~34130) 30720 (7510~40950) 37540 (7510~40950) 46060 (22860~58600)
Air flow m3/h 1850 1850 2300 3150 3150 4000 4000 4000 5000
EER W/W 4.14 4.10 3.77 4.28 3.85 3.89 3.56 3.23 3.46
COP W/W 4.53 4.5 4.20 4.04 3.9 3.81 4.00 3.93 3.56
SEER 6.63 6.61 7.21 6.9 6.8 6.11 7.01 6.50 6.50
SCOP 4.12 4.1 4.1 4.01 4.01 4.01 4.05 4.01 3.72
EEL Rank Cooling A++ A++ A++ A++ A++ A++ A++ A++ A++
Heating A+ A+ A+ A+ A+ A+ A+ A+ A
Noise Level/
sound power dB(A) (Max) 47/53 62 47/53 62 48/55 64 55 68 55 68 53/59 68 54/60 68 54/60 68 61 75
Guaranteed
Operating
Range
Cooling ℃-15~48 -15~48 -15~48 -15~48 -15~48 -15~48 -15~48 -15~48 -15~48
Heating ℃-15~24 -15~24 -15~24 -15~24 -15~24 -15~24 -15~24 -15~24 -15~24
Compressor
model Model GSD113RKRA8
JV6 GSD113RKRA8 JV6 KTN150D42 UFZ KTM240D57 UMU KTM240D57 UMU KTF235D22UMT KTF235D22UMT KTF235D22UMT KTF400D64UMT
Brand HITACHI HITACHI GMCC GMCC GMCC GMCC GMCC GMCC GMCC
Ele
ctrical Data
Power V/Hz/f 220~240/50/1 220~240/50/1 220~240/50/1 220~240/50/1 220~240/50/1 220~240/50/1 220~240/50/1 220~240/50/1 220~240/50/1
Power input Cooling W 850
（250~1560）1000 （330~1900）1380（390~2200）1470
(525~2500) 1870 (600~2660) 1800 （650～3100）2250 （580～4000）3100 （580～4000）3610 （810～7500）
Heating W 850
（200~1600）1000 （200~1600）1430（290~2300）1780 (452~2741) 2030 (500~2967) 2100 (520～3100) 2250 (460～4000) 2800 (460～4000) 3790 (680～7500)
Rated
current Cooling A 3.67 4.35 6.2 6.4 8.1 8.0 10.0 13.8 15.6
Heating A 3.67 4.35 6.4 7.8 8.8 9.3 10.0 12.4 16.7
7

2. SPECIFICATIONS
NOTE:
1．Test conditions：
Cooling : Indoor: DB27℃/ WB19℃ Outdoor: DB35℃/ WB24℃
Heating: Indoor: DB20℃/ WB15℃ Outdoor: DB7℃/ WB 6℃
2．The Sound Pressure Level is based on the following conditions:
Outdoor unit：
Measure the noise value of 3 points，the points are1 meter in front of the three sides of the unit surface
(front/left/right)and height =1/2(unit height +1) meter from floor level, and calculate the weighted average of the noise.
3. The above data was measured in an anechoic chamber. Please take into consideration reflected sound of your specific application
environment.
4. All specifications are subjected to change by the manufacturer without prior notice.
Type (Free Match) up to 2 indoor units up to 2 indoor units up to 2 indoor units up to 3 indoor units up to3indoor units up to 3 indoor units up to 4 indoor units up to 4 indoor units up to 5 indoor units
EU Model Name 2AMW35U4RRA 2AMW42U4RRA 2AMW50U4RXA 3AMW60U4RFA 3AMW72U4RFA 3AMW70U4RAA 4AMW81U4RAA 4AMW105U4RAA 5AMW125U4RTA
Model Name AMW2-12U4RRA AMW2-14U4RRA AMW2-18U4RXA AMW3-21U4RFA AMW3-24U4RFA AMW3-24U4RAA AMW4-27U4RAA AMW4-36U4RAA AMW5-42U4RTA
Anti electric shock Class I Class I Class I Class I Class I Class I Class I Class I Class I
Degrees of protection IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4
Dimension & Weight
Net Dimension
(WxHxD) mm 730×540×260 730×540×260 810×280×580 860×670×310 860×670×310 950×840×340 950×840×340 950×840×340 950×1050×340
Net Weight kg 34 34 37 49 49 72 73 73 95
Package Dimension
(WxHxD) mm 860×590×400 860×590×400 940×385×630 990×450×730 990×450×730 1110×460×920 1110×460×920 1110×460×920 1110×1200×460
Gross Weight kg 36 36 39.5 54 54 77 78 78 102
Technical Information
Piping
Diameter
(Liquid) mm 6.35×2 6.35×2 6.35×2 6.35×3 6.35×3 6.35×3 6.35×4 6.35×4 6.35×5
Diameter
(Gas) mm 9.52×2 9.52×2 9.52×2 9.52×3 9.52×3 9.52×3 9.52×4 9.52×4 9.52×5
Max
Length
(Each) m 15 15 15 20 20 20 20 20 20
m 30 30 30 45 45 45 60 60 80
Max
Height m 15 15 15 15 15 15 15 15 15
Upload refrigerant g 950 950 1070 1450 1450 1800 2200 2200 3000
Upload additional
refrigerant g/m 12g/m over 15m 12g/m over 15m 12g/m over 15m 12g/m over 15m 12g/m over 15m 12g/m over 15m 12g/m over 20m 12g/m over 20m 12g/m over 25m
8
Max
Length
(Total)

3.OUTLINES AND DIMENSIONS
3. Outlines and dimensions
12K/14K (Unit:mm)
Air inlet
Air outlet 4-11
×17 Hole
50
290
30
Drain pipe
260
290
317
125 480
730 83
278
540
260
Electric box
75
130
102
160
131
189
Liquid pipe
Gas pipe
9

3.OUTLINES AND DIMENSIONS
18K (Unit:mm)
150 510
810 83
Air inlet 50
314
Drain pipe
37
280
310
338
Air outlet 4-11
×17 Hole
297
584
87
285 Electric box
101
159
127
186
Liquid pipe
Gas pipe
10

3.OUTLINES AND DIMENSIONS
21K/AMW3-24U4RFA (Unit:mm)
11

3.OUTLINES AND DIMENSIONS
AMW3-24U4RAA (Unit:mm)
414
380
12

3.OUTLINES AND DIMENSIONS
27K (Unit:mm)
414
380
13

3
3. .O OU UT TL LI IN NE ES S A AN ND D D DI IM ME EN NS SI IO ON NS S
Unit ： mm
42K
14

4. ELECTRICAL DATA
4. Electrical data
NOTE:
1. The above compressor data is based on 100% capacity combination of indoor units at the rated
operating frequency.
2. This data is based on the same conditions as the nominal heating and cooling capacities.
3. The compressor is started by an inverter, resulting in extremely low starting current.
Power supply Applicable voltage ELB
Outdoor
unit Voltage(V) PH Frequency
(Hz) Umin(V) Umax(V) Nominal
Current(A)
Nominal
Sensitive
Current(mA)
12K/14K/18K 220-2401 50 176 253 25 30
21K/24K/
27K/36K 220-2401 50 176 253 32 30
42K 220-2401 50 176 253 63 30
15

5. Capacities and selection data
5.1 Capacity characteristic charts
The following charts show the characteristics of outdoor unit capacity, which corresponds with the
operating ambient temperature of outdoor unit.
Conditions:
②Compressor at rated inverter frequency
④Capacity loss due to white frost and defrost
operation is not included.
①Pipe length / height difference : 5m / 0m
③Indoor fan speed at high fan speed
COOLING CAPACITY (W)
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
HEATING CAPACITY (W)
5. CAPACITIES AND SELECTION DATA
Indoor temperature Outdoor temperature (℃DB)
(℃DB) (℃WB) 15 20 25 30 35 40 45
22 16 3362 3485 3526 3649 3690 3280 2747
27 19 4346 4305 4264 4182 4100 3690 2993
30 22 4305 4510 4469 4510 4592 4100 3280
Indoor temperature Outdoor temperature (℃DB)
(℃DB) -10 -5 0 10 15 20
16 3150 3510 3960 4050 4050 4095 4140
20 3240 3645 4050 4410 4635 4950 4860
24 3375 4050 4500 4950 5175 5535 4410
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
14K
COOLING CAPACITY (W)
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
HEATING CAPACITY (W)
Indoor temperature Outdoor temperature (℃DB)
(℃DB) (℃WB) 15 20 25 30 35 40 45
22 16 2870 2975 3010 3115 3150 2800 2345
27 19 3710 3675 3640 3570 3500 3150 2555
30 22 3675 3780 3815 3850 3920 3500 2800
Indoor temperature Outdoor temperature (℃DB)
(℃DB) -10 -5 0 10 15 20
16 2695 3003 3388 3427 3465 3504 3542
20 2772 3119 3465 3773 3966 4235 4158
24 2888 3465 3850 4235 4428 4736 3773
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
12K
16
5
5