Hisense AMW2-14U4RRA Operating manual

TECHNICAL&SERVICE MANUAL V2.0
—MULTI-SPLIT TYPE AIR CONDITIONERS
R410A
Refrigerant
R410A
Refrigerant
R410A
Refrigerant
R32
Refrigerant
Models:
<Outdoor Unit>
AMW2-14U4RRA
AMW2-18U4RXA
AMW3-24U4RAA
AMW4-27U4RAA
AMW4-36U4RAA
2AMW-42U4RRA
2AMW-50URXA
3AMW-70U4RAA
4AMW-81U4RAA
4AMW-105U4RAA

Multi-Split Type Air Conditioner Service Manual
Table of Contents
1.General.......................................................................................................................................... 1
1.1 Features ............................................................................................................................. 1
1.2 Product lineup .................................................................................................................... 2
1.3 Model identification ............................................................................................................ 3
1.4 Working range.................................................................................................................... 4
1.5 Product picture................................................................................................................... 4
2. Specifications............................................................................................................................... 6
3. Outlines and dimensions.............................................................................................................. 8
4. Electrical data............................................................................................................................. 13
5. Capacities and selection data.................................................................................................... 14
5. 1 Capacity characteristic charts.......................................................................................... 14
5.2 Piping length correction factor.......................................................................................... 18
5.3 Correction factors according to defrosting operation ....................................................... 19
6. Sound pressure data.................................................................................................................. 20
7. Refrigerant cycle ........................................................................................................................ 21
8. Wiring diagram........................................................................................................................... 22
8.1 Electrical wiring diagrams................................................................................................. 22
8.2 Electric control board........................................................................................................ 25
8.3 Running Parameter Query................................................................................................ 27
8.4 Common Wiring ................................................................................................................ 29
8.5 Sensor parameter............................................................................................................. 31
9. Piping work and refrigerant charge............................................................................................ 40
9.1 MAX. length allowed......................................................................................................... 40
9.2 Oil trap............................................................................................................................... 40
9.3 Additional refrigerant charge............................................................................................. 41
10. Control mode............................................................................................................................ 42
11. Trouble shooting....................................................................................................................... 45
11.1 The method of identify fault codes.................................................................................. 45
11.2 Fult codes........................................................................................................................ 48
12.Checking components............................................................................................................... 58
12.1 Check refrigerant system................................................................................................ 58
12.2 Check parts unit.............................................................................................................. 60

11..GGEENNEERRAALL
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

11..GGEENNEERRAALL
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

11..GGEENNEERRAALL
1.2 Product lineup
Outdoor Unit
Type Model 14 18 24 27 36
Dual AMW2- ● ●
Trio AMW3- ●
Quattro AMW4- ● ●
●--- available model
3

11..GGEENNEERRAALL
1.3 Model identification
1.4 Working range
Power Supply
Working Voltage 220-240V ~，50Hz
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 heat pump air conditioner has been designed for the following outdoor
operating temperatures.
Type Mode Outdoor operating temperature range(°C)
maximum minimum
Multi-split type air conditioner Cooling Operation 48 -15
Heating Operation 24 -15
4
Heat pump type

11..GGEENNEERRAALL
1.5 Product picture
Outdoor Unit
Type Capacity(KBtu/h) View
Dual
14
18
Trio 24
Quattro
27
36
5

22..SSPPEECCIIFFIICCAATTIIOONNSS
2. Specifications
OUTDOOR
DC FAN MOTER TYPES
Type(Free Match) up to 2 indoor
units
up to 2 indoor
units
up to 4 indoor
units
up to 4 indoor
units
Model Name AMW2-14U4RRA AMW2-18U4RXA AMW3-24U4RAA AMW4-27U4RAA AMW4-36U4RAA
Gas R32 R32 R32 R32 R32
Performance
Capacity
Pdesign
Cooling kW 4.1 5.2 7.0 8.0 10.0
Pdesign
Heating kW 4.2 5.5 7.5 8.0 8.0
Cooling kW 4.1(1.4～5.5) 5.2(1.8～6.6) 7.0(3.0～10.0) 8.0（2.6～11.5） 10.0（2.6～11.5）
Btu/h 13990(4780~18766) 17740(6142~22519) 23890(10240~34130) 27300(8870~39250) 27300(8870~39250)
Heating kW 4.5(0.9～5.6) 6.0(1.4～7.2) 8.0(2.3～10.0) 9.0(2.2～12.0) 11.0(2.2～12.0)
Btu/h 15354(3070~19100) 20472(4777~24566) 27300(7850~34130) 30720(7510~40950) 30720(7510~40950)
Air fl ow m3/h 2200 2800 4000 4000 4000
EER W/W 4.10 3.77 3.89 3.56 3.23
COP W/W 4.5 4.20 3.81 4.00 3.93
SEER 6.61 7.21 6.11 7.01 6.50
SCOP 4.1 4.1 4.01 4.05 4.01
EEL Rank Cooling A++ A++ A++ A++ A++
Heating A+ A+ A+ A+ A+
dB(A)
(Max)
Noise Level/sound
power (Max) 53/59 68 54/60 68 54/60 68
Guaranteed
Operating
Range
Cooling ℃-15~48 -15~48 -15~48 -15~48 -15~48
Heating ℃-15~24 -15~24 -15~24 -15~24 -15~24
Compressor
model Model GSD113RKRA8 JV6
KTN150D42UFZ KTF235D22UMT KTF235D22UMT KTF235D22UMT
Brand HITACHI GMCC GMCC GMCC GMCC
Electrical 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
Power input Cooling W 1000（330~1900） 1380（390~2200） 1800（650～3100） 2250（580～4000） 3100（580～4000）
Heating W 1000（200~1600） 1430（290~2300） 2100(520～3100) 2250 (460～4000) 2800 (460～4000)
up to 3 indoor
units
48/55 6 4
47/53 6 2
6

22..SSPPEECCIIFFIICCAATTIIOONNSS
Type(Free Match) up to 2 indoor
units
up to 2 indoor
units
up to 3 indoor up to 4 indoor
units
up to 4 indoor
units
Model Name AMW2-14U4RRA AMW2-18U4RXA AMW3-24U4RAA AMW4-27U4RAA AMW4-36U4RAA
Rated
current
Cooling A 4.35 6.2 8.0 10.0 13.8
Heating A 4.35 6.4 9.3 10.0 12.4
Anti electric shock Class I Class I Class I Class I Class I
Degrees of protection IPX4 IPX4 IPX4 IPX4 IPX4
Dimension & Weight
Net Dimension (WxHxD) mm 730×536×260 810×580×280 950×840×340 950×840×340 950×840×340
Net Weight kg 34 37 66 67 67
Package Dimension
(WxHxD) mm 860×600×400 940×630×385 1110×920×460 1110×920×460 1110×920×460
Gross Weight kg 36 39.5 71 72 72
Technical Information
Piping
Diameter(Liquid) 6.35×2 6.35×2 6.35×3 6.35×4 6.35×4
Diameter(Gas) mm 9.52×2 9.52×2 9.52×3 9.52×4 9.52×4
Max
Length(Each) m 15 15 20 20 20
Max
Length( Total) m 30 30 45 60 60
Max Height m 15 15 15 15 15
Upload refrigerant g 950 1070 1800 2200 2200
Upload additional
refrigerant g/m 12g/m over 15m 12g/m over 15m 12g/m over 15m 12g/m over 20m 12g/m over 20m
Test conditions：
Cooling : Indoor: DB27℃/ WB19℃ Outdoor: DB35℃/ WB24℃
Heating: Indoor: DB20℃/ WB15℃ Outdoor: DB7℃/ WB 6℃
Remarks:
1. The above design and specifications are subject to change without prior
notice for product improvement.
2. The values given in the table for noise level reflect the levels in anechoic
chamber. Storage condition: Temperature -20~65℃
Humidity
30%~80%
units
mm
7

33..OOUUTTLLIINNEESSAANNDDDDIIMMEENNSSIIOONNSS
3. Outlines and dimensions
14K
Air inlet
Air outlet 4-11
×17 Hole
50
290
30
Drain pipe
260
290
317
125 480
730 83
278
540
260
(UNIT:mm)
Electric box
75
130
102
160
131
189
Liquid pipe
Gas pipe
8

33..OOUUTTLLIINNEESSAANNDDDDIIMMEENNSSIIOONNSS
18K
150 510
810 83
Air inlet 50
314
Drain pipe
37
280
310
338
Air outlet 4-11
×17 Hole
297
584
87
285
(UNIT:mm)
Electric box
101
159
127
186
Liquid pipe
Gas pipe
9

33..OOUUTTLLIINNEESSAANNDDDDIIMMEENNSSIIOONNSS
24K (UNIT:mm)
10

33..OOUUTTLLIINNEESSAANNDDDDIIMMEENNSSIIOONNSS
27K (UNIT:mm)
11

33..OOUUTTLLIINNEESSAANNDDDDIIMMEENNSSIIOONNSS
36K
12

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.
Power supply Applicable voltage ELB
Outdoor
unit
Voltage(V) PH Frequency Umin
(V)
Umax(V)
l
Nominal
Current(A)
Nominal
Sensitive
Current(mA)
14K 2 20-240 50 176 253 40 30
18K 2 20-240 50 176 253 40 30
24K 2 20-240 50 176 253 40 30
27K 2 20-240 50 176 253 40 30
36K 2 20-240 50 176 253 40 30
1
1
1
1
1
13

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:
①Pipe length / height difference : 5m / 0m ②Compressor at rated inverter frequency
③Indoor fan speed at high fan speed ④Capacity loss due to white frost and defrost
operation is not included.
14K
COOLING CAPACITY(kW)
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
14
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
Indoor temperature Outdoot air intake temp ℃WB
(℃DB) -10 -5 0 5 10 15 20
16 3.60 3.96 4.14 4.55 4.64 4.86 4.50
20 3.69 4.05 4.28 4.59 4.73 4.95 4.59
24 3.38 3.51 3.69 4.01 4.28 4.05 3.83
HEATING CAPACITY(kW)
Indoor temperature Outdoot air intake temp ℃DB
(℃WB) (℃DB) 15 20 25 30 35 40 45
16 22 3.36 3.36 3.36 3.40 3.49 3.20 3.08
19 27 3.98 3.98 4.02 4.06 4.10 3.73 3.28
22 30 4.35 4.39 4.43 4.47 4.59 3.90 3.49

5. CAPACITIES AND SELECTION DATA
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
24K
COOLING CAPACITY(kW)
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
18K
COOLING CAPACITY(kW)
15
HEATING CAPACITY(kW)
Indoor temperature Outdoot air intake temp ℃WB
(℃DB) -10 -5 0 5 10 15 20
16 4.80 5.28 5.52 6.06 6.18 6.48 6.00
20 4.92 5.40 5.70 6.12 6.30 6.60 6.12
24 4.50 4.68 4.92 5.34 5.70 5.40 5.10
Indoor temperature Outdoot air intake temp ℃DB
(℃WB) (℃DB) 15 20 25 30 35 40 45
16 22 5.74 5.74 5.74 5.81 5.95 5.46 5.25
19 27 6.79 6.79 6.86 6.93 7.00 6.37 5.60
22 30 7.42 7.49 7.56 7.63 7.84 6.65 5.95
Indoor temperature Outdoot air intake temp ℃DB
(℃WB) (℃DB) 15 20 25 30 35 40 45
16 22 4.26 4.26 4.26 4.32 4.42 4.06 3.90
19 27 5.04 5.04 5.10 5.15 5.20 4.73 4.16
22 30 5.51 5.56 5.62 5.67 5.82 4.94 4.42

5. CAPACITIES AND SELECTION DATA
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
HEATING CAPACITY(kW)
16
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
Indoor temperature Outdoot air intake temp ℃WB
(℃DB ) -10 -5 0 5 10 15 20
16 7.20 7.92 8.28 9.09 9.27 9.72 9.00
20 7.38 8.10 8.55 9.18 9.45 9.90 9.18
24 6.75 7.02 7.38 8.01 8.55 8.10 7.65
Indoor temperature Outdoot air intake temp ℃WB
(℃DB) -10 -5 0 5 10 15 20
16 6.40 7.04 7.36 8.08 8.24 8.64 8.00
20 6.56 7.20 7.60 8.16 8.40 8.80 8.16
24 6.00 6.24 6.56 7.12 7.60 7.20 6.80
27K
COOLING CAPACITY(kW)
HEATING CAPACITY(kW)
Indoor temperature Outdoot air intake temp ℃DB
(℃WB) (℃DB) 15 20 25 30 35 40 45
16 22 6.56 6.56 6.56 6.64 6.80 6.24 6.00
19 27 7.76 7.76 7.84 7.92 8.00 7.28 6.40
22 30 8.48 8.56 8.64 8.72 8.96 7.60 6.80

5. CAPACITIES AND SELECTION DATA
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
36K
COOLING CAPACITY(kW)
(℃ DB) : Dry Bulb Temperature (℃)
(℃ WB) : Wet Bulb Temperature (℃)
17
HEATING CAPACITY(kW)
Indoor temperature Outdoot air intake temp ℃WB
(℃DB) -10-5 0 5 10 15 20
16 8.80 9.68 10.12 11.11 11.33 11.88 11.00
20 9.02 9.90 10.45 11.22 11.55 12.10 11.22
24 8.25 8.58 9.02 9.79 10.45 9.90 9.35
Indoor temperature Outdoot air intake temp ℃DB
(℃WB) (℃DB) 15 20 25 30 35 40 45
16 22 8.20 8.20 8.20 8.30 8.50 7.80 7.50
19 27 9.70 9.70 9.80 9.90 10.00 9.10 8.00
22 30 10.60 10.70 10.80 10.90 11.20 9.50 8.50

5. CAPACITIES AND SELECTION DATA
5.2 Piping length correction factor
Indoor unit Pipe length L
Height difference H
Outdoor unit
The correction factor is based on the equivalent piping length in meters (EL) and the
height between outdoor and indoor units in meters (H).
H:
Height between indoor unit and outdoor unit (m).
•H>0: Position of outdoor unit is higher than position of indoor unit (m).
•H<0: Position of outdoor unit is lower than position of indoor unit (m).
Cooling ：
EL 5m 10m 15m 20m
14K 1.0 0.95 0.9
18K 1.0 0.95 0.9
24K 1.0 0.95 0.9 0.85
27K 1.0 0.95 0.9 0.85
36K 1.0 0.95 0.9 0.85
Gas Diameter (mm/inch)
90° Elbow 0.15 0.2 0.25 0.35
9.52 (3/8') 12.7 (1/2') 15.88 (5/8') 19.05 (3/4')
L:
Actual one-way piping length between indoor unit and outdoor unit (m).
EL:
Equivalent one-way piping length between indoor unit and outdoor unit (m).
18
Heating ：
EL 5m 10m 15m 20m
14K 1.0 0.95 0.9
18K 1.0 0.95 0.9
24K 1.0 0.95 0.9 0.85
27K 1.0 0.95 0.9 0.85
36K 1.0 0.95 0.9 0.85