Hisense AMS-09UR4SNZA3, AMD-18UX4SJC, AMD-09UX4SJC, AMD-12UX4SJC, AMW2-16U4SGC Service Manual
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MULTI-SPLIT TYPE AIR CONDITONER
SERVICE MANUAL
V: 3.0
●
INDOOR UNIT:
AMS-07UR4SNZA3
AMS-09UR4SNZA3
AMS-12UR4SNZA3
AMS-18UR4SPZA3
AMD-09UX4SJC
AMD-12UX4SJC
AMD-18UX4SJC
●OUTDOOR UNIT:
AMW2-16U4SGC
AMW2-20U4SNC
AMW3-24U4SKC
AMW4-28U4SKC
Hisense Corporation
Table of contents
Page
1．OPERATING RANGE 1
2．SPECIFICATION 2
2-1 Unit specifications 2
2-2 Major component specifications 5
2-3 Other component specifications 6
3．OUTLINES AND DIMENSIONS 8
3-1 INDOOR 8
3-2 OUTDOOR 12
4．REFRIGERANT FLOW DIAGRAM 14
4-1 Refrigerant flow diagram 14
4-2 Evacuation procedures 16
4-3 Evacuation direction 17
5．ELECTRICAL DATA 18
5-1 Electric wiring diagrams 18
5-2 Electric control 19
5-3 Sensor parameter 30
6．CONTROL MODE 31
6-1 Indoor control mode 31
6-2 Outdoor control mode 34
7．TROUBLESHOOTING 38
7-1 Error codes 39
8．CHECKING COMPONENTS 40
8-1 Check refrigerant system 40
8-2 Check parts unit 42
9．PARTS LIST 46
9-1 Indoor 46
9-2 Outdoor 51
11.. OOPPEERRAATTIINNGG RRAANNGGE
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1
T emperature Indoor Air Intake Temp. Outdoor Air Intake Temp
Maximum
32℃ D.B./23℃ W.B. 43 ℃ D.B./26℃ W.B.
COOLING
Minimum
21℃ D.B./15℃ W.B. 21 ℃ D.B./15℃ W.B.
Maximum
27℃ D.B./18℃ W.B. 24℃ D.B./18℃ W.B.
HEATING
Minimum
20℃ D.B/≤15℃ W.B -7℃ D.B./-8℃ W.B.
22.. SSPPEECCIIFFIICCAATTIIOONNSS
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2-1. Unit specifications
2-1-1.OUTDOOR UNIT
NOTE :Test conditions：
Cooling : Indoor: DB27℃/ WB19℃ Outdoor: DB35℃/ WB24℃
Heating: Indoor: DB20℃/ WB15℃ Outdoor: DB7℃/ WB 6℃
Model AMW4-28U4SKC AMW3-24U4SKC AMW2-20U4SNC AMW2-16U4SGC
Function Cooling Heating Cooling Heating Cooling Heating Cooling Heating
Power supply a.c 220V~240V/50Hz
Capacity k
W
8.2 9.0 7.0 8.0 5.8 6.4 4.6 5.3
Dehumidification
l /h
---- ---- ---- ---- ---- ---- ---- ----
Capacity
Air flow
m
3
/
h
---- ---- ---- ---- ---- ---- ---- ----
Rated current A 10.7 11.1 9.7 10.1 7.7 8.0 6.1 5.7
Rated input k
W
2.4 2.49 2.18 2.21 1.7 1.75 1.4 1.3
Auxiliary heater A -----Power factor %
99.9％ 99.9％ 99.9％ 99.9％
Electrical data
Max. current A 15.0 15.0 14.5 14.5
SEER/HSPF ----
Model
ATL165SD-C9AU
DA130S1C-20FZ DA130S1C-20FZ
Compressor
Winding resistance
Ω 0.590
(at75℃) 0.95（20℃） 0.95（20℃）
Model YDK70-6H-3 YDK55-6I-8 YDK29-6I-22 Outdoor
fan motor
Winding resistance (at20℃)
Ω
M:78;A:80 M:185;A:200 M:283.5;A:180
Net size
L×W×H
cm
109×41×84 98×35×64
80×26×57
Package size
L×W×H
cm
112×46×98 108×42×72
94×36×64
Net weight kg 67 66 46.2 37.5
Gross weight kg 77 72 52.5 41
Liquid pipe m
m
6.35×4 6.35×3 6.35×2 6.35×2
Gas pipe m
m
9.52×4 9.52×3 9.52×2 9.52×2
Refrigerant
piping
Connection method Flare Flare Flare
Air direction ---- ---- ---- ----
Sound level (Hi) dB 57 57 56
Fan speed (Hi) rp
m
840 840 900
Fan speed regulator 3 3 3
Refrigerant filling
capacity(R410a)
kg 2.1 2.4 1.4 1.0
Special
remarks
Throttle mode
EEV EEV EEV EEV
22.. SSPPEECCIIFFIICCAATTIIOONNSS
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2-1-2.INDOOR UNIT
NOTE :Test conditions：
Cooling : Indoor: DB27℃/ WB19℃ Outdoor: DB35℃/ WB24℃
Heating: Indoor: DB20℃/ WB15℃ Outdoor: DB7℃/ WB 6℃
Model
AMS-07UR4SNZA3
AMS-09UR4SNZA3
AMS-12UR4SNZA3
AMS-18R4SPZA3
Function Cooling Heating Cooling Heating Cooling Heating
Power supply a.c 220V~240V/50Hz
Capacity kW 2.6 3.0 3.2 3.8 4.8 5.5
Dehumidification l /h 1.1 ---- 1.4 ---- 1.5 ----
Capacity
Air flow m3/h 420 520 450 560 700 800
Running current A 0.18 0.18 0.18 0.18 0.2 0.18
Rated input kW 40 40 40 40 45 40
Auxiliary heater A ---Power factor % ----
Electrical data
Starting current A ----
SEER/HSPF ----
Model ----
Compressor
Winding resistance (at25℃)
Ω ----
Model YYW16-4-532 YYW28-4-2085BIndoor
fan motor
Winding resistance (at20℃)
Ω M:364;A:400.5; M:246.2;A:191;
Model ---- Outdoor
fan motor
Winding resistance (at20℃)
Ω ----
Net size L×W×H cm
75×25×19
87×23×31
Package size L×W×H cm
84×31×27
96×40×34
Net weight kg 8.0 12.0
Gross weight kg 9.5 14.0
Liquid pipe mm 6.35
Gas pipe mm 9.52
Refrigerant
piping
Connection method ---Air direction 6 6
Sound level (Hi) dB 37 49
Fan speed (Hi) rpm 1200 1300
Fan speed regulator 3 3
Refrigerant filling
capacity(R410a)
kg ----
Special
remarks
Throttle mode ----
22.. SSPPEECCIIFFIICCAATTIIOONNSS
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NOTE :Test conditions：
Cooling : Indoor: DB27℃/ WB19℃ Outdoor: DB35℃/ WB24℃
Heating: Indoor: DB20℃/ WB15℃ Outdoor: DB7℃/ WB 6℃
Model AMD-09UX4SJC AMD-12UX4SJC AMD-18UX4SJC
Function Cooling Heating Cooling Heating Cooling Heating
Power supply a.c 220V~240V/50Hz
Capacity kW 2.6 3.0 3.2 3.7 5.0 5.5
Dehumidification l /h 1.5 ---- 1.5 ---- 1.9 ----
Capacity
Air flow m3/h 440 520 440 520 600 700
Running current A 0.2 0.2 0.2 0.2 0.3 0.3
Rated input kW 44 44 44 44 66 66
Auxiliary heater A ----
Power factor % ----
Electrical data
Starting current A ----
SEER/HSPF ----
Model ----
Compressor
Winding resistance (at25℃)
Ω ----
Model
YSK25-4G
YSK40-4E
Indoor
fan motor
Winding resistance (at20℃)
Ω M:247;A:150 M:247;A:150
Model ---- Outdoor
fan motor
Winding resistance (at20℃)
Ω ----
Net size L×W×H mm
770×600×190
770×600×190
Package size L×W×H mm
946×692×236
946×692×236
Net weight kg 20 21
Gross weight kg 24 25
Liquid pipe mm 6.35
Gas pipe mm 9.52
Refrigerant
piping
Connection method ----
Air direction ---- ----
Sound level (Hi) dB 35 37
Fan speed rpm
10pa：980/850/700
30pa：1150/1070/940
10pa：1290/1150/1010
30pa：1400/1310/1150
Fan speed regulator 6 6
Refrigerant filling
capacity(R410a)
kg ----
Special
remarks
Throttle mode ----
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2-2. Major component specifications
2-2-1.INDOOR FAN MOTOR
PARAMETER
ELECTRIC
PERFORMANCE
AMS-07UR4SNZA3
AMS-09UR4SNZA3
AMS-12UR4SNZA3 AMS-18R4SPZA3
Motor model YYW16-4-532
YYW28-4-2085B
Rated power source 220V 50Hz 220V 50Hz
Phases/Poles 1/4 1/4
Rated load output(W) 16 28
Rated speed(r/min) -- 1250
Ambient
temperature(℃)
-5℃～+43℃. -5℃～+43℃
PARAMETER
ELECTRIC
PERFORMANCE
AMD-09UX4SJC AMD-12UX4SJC AMD-18UX4SJC
Motor model YSK25-4G YSK40-4E
Rated power source 220V 50Hz 220V 50Hz
Phases/Poles 1/4 1/4
Rated load output(W) 25 44
Rated speed(r/min) 1150/1070/940(Red)
980/850/700(White)
1400/1310/1150(Red)
1290/1150/1010(White)
Ambient
temperature(℃)
-5℃～+43℃. -5℃～+43℃
2-2-2 OUTDOOR FAN MOTOR
PARAMETER ELECTRIC
PERFORMANCE
AMW3-24U4SKC
AMW4-28U4SKC
AMW2-20U4SNC AMW2-16U4SGC
Motor model YDK70-6H-3
YDK55-6I-8
YDK29-6I-22
Rated power source 220V 50Hz 220V 50Hz 220V 50Hz
Phases /Poles 1/6 1/6 1/6
Rated load output(W) 65 47 28
Ambient
temperature(℃)
-5℃～+43℃ -5℃～+43℃ -5℃～+43℃
2-2-3. COMPRESSOR
PARAMETER ELECTRIC
PERFORMANCE
AMW3-24U4SKC
AMW4-28U4SKC
AMW2-20U4SNC
AMW2-16U4SGC
Compressor model ATL165SD-C9AU DA130S1C-20FZ
Compressor type Rotary Rotary
Rated power 1550W 990W
Current (A) 10.7 4.97
22.. SSPPEECCIIFFIICCAATTIIOONNSS
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Motor type DC brushless motor DC brushless motor
Starting type DC Inverter DC Inverter
Motor
Winding resistance
0.59/0.59/0.59
Ω
(at 75℃)
U-V/V-W/W-U
0.95/0.95/0.95Ω(at 20℃)
U-V/V-W/W-U
Number of cylinder 2 2
Oil type
α68HES-H or equivalent
ESTER OIL VG74
Oil charge (cc) 880 500
Ambient temperature(℃) -5℃～+43℃. -5℃～+43℃
2-3. Other component specifications
2-3-1. INDUCTANCE
PARAMETER
ELECTRIC
PERFORMANCE
AMW3-24U4SKC
AMW4-28U4SKC
AMW2-20U4SNC
AMW2-16U4SGC
Inductance model R2550HSA R2050HSB
Rated power source 220V 50Hz 220V 50Hz
Rated current(A) 25 20
Rated inductance
5.0(mH)±10% 5.2（mH）±10%
Ambient
temperature(℃)
-20℃～+70℃. -20℃～+70℃.
2-3-2. FILTER
ELECTRIC
PERFORMANCE
AMW3-24U4SKC
AMW4-28U4SKC
AMW2-20U4SNC
AMW2-16U4SGC
Filter model
RTNF-250T10X-3LF
RTNF250-25T068X-03LF
Rated current(A) 20 20
Rated power
source
AC 220V—50Hz AC 220V—50Hz
Filter frequency
range
150K—30MHHz 150K—30MHHz
Temperature
range(℃)
-25℃～+85℃. -25℃～+85℃.
22.. SSPPEECCIIFFIICCAATTIIOONNSS
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2-3-4. STEPPER MOTOR
PARAMETER
ELECTRIC
PERFORMANCE
AMS-07UR4SNZA3
AMS-09UR4SNZA3
AMS-12UR4SNZA3 AMS-18UR4SPZA3
Stepper Motor model 24BYJ48-CP 24BYJ48-B1
Voltage(DC) 12V 12V
Number of phase 4 4
Drive mode 1-2phase excitation unipolar drive 1-2phase excitation unipolar
drive
Resistance per phase
300Ω±7% 300Ω±7%
Temperature
range(℃)
-10℃～+40℃ -10℃～+40℃
2-3-5. OVERLOAD PROTECTION
NONE.
33.. OOUUTTLLIINNEESS AANNDD DDIIMMEENNSSIIOO
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3-1. INDOOR（MODEL: AMS-07UR4SNZA3、AMS-09UR4SNZA3、AMS-12UR4SNZA3）
23mm631mm
94mm
190mm
250mm
750mm
50mm
50mm
50mm
65mm
33.. OOUUTTLLIINNEESS AANNDD DDIIMMEENNSSIIOO
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3-2. INDOOR（MODEL: AMS-18UR4SPZA3）
50mm
50mm
50mm
271
195
779
33.. OOUUTTLLIINNEESS AANNDD DDIIMMEENNSSIIOO
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3-3. INDOOR（MODEL: AMD-09UX4SJC/AMD-12UX4SJC/AMD-18UX4SJC）
47
57
508
740
780
808
595
630.2
740
190
688
676
140
168.4
145.5
122
33.. OOUUTTLLIINNEESS AANNDD DDIIMMEENNSSIIOO
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3-3.OUTDOOR（MODEL: AMW2-16U4SGC）
33.. OOUUTTLLIINNEESS AANNDD DDIIMMEENNSSIIOO
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3-4.OUTDOOR（MODEL: AMW2-20U4SNC）
33.. OOUUTTLLIINNEESS AANNDD DDIIMMEENNSSIIOO
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3-5.OUTDOOR（MODEL: AMW3-24U4SKC、AMW4-28U4SKC）
44.. RREEFFRRIIGGEERRAANNTT FFLLOOWW DDIIAAGGRRAAM
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4-1. Refrigerant flow diagram ：
MODEL：AMW3-24U4SKC、AMW4-28U4SKC
Filter
B机
A机
A机
C机
B机
D机
C机
D机
Remark： The part is only for AMW4-28U4SKC
COOLING CYCLE
HEATING CYCLE
44.. RREEFFRRIIGGEERRAANNTT FFLLOOWW DDIIAAGGRRAAM
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MODEL：AMW2-20U4SNC AMW2-16U4SGC
EEV B
EEV A
4-way valve
Filter
B
机
A机
A机
B机
Filter
44.. RREEFFRRIIGGEERRAANNTT FFLLOOWW DDIIAAGGRRAAM
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4-2. Evacuation procedures：
EVACUATION PROCEDURES
Connect the refrigerant pipes (both the liquid an
d
g
as pipes) between the indoor and the outdoor units.
Remove service port cap of the stop valve A and connect gage manifold valve and vacuum
p
ump to it.
Run the vacuum pump for more than 15 minutes and at this time confirm that the pressure
gage indicates -0.1Mpa(-76 cmHg).
Stop pump and keep the pressure for one or two minutes. Make sure the pressure is no
change(if the pressure is changed to high, there is some leakage for the pipe connection).
Remove gage manifold valve quickly from the service port of the stop valve A.
full open the stop valves A on gas and liquid pipe sides.
T ot al pi pe len gth is in the range :
N
o gas charge is needed
T ot al pipe length exceeding the limit:
Charge the prescribed amount of gas.
Tighten the cap to the service port to obtain the initial status.
Retighten the cap.
Leak test
Repeat the steps above for other valves(B\C\D), be sure all refrigerant pipes are
connected and evacuated, and all valves are full opend.
44.. RREEFFRRIIGGEERRAANNTT FFLLOOWW DDIIAAGGRRAAM
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4-3. Evacuation direction：
MAX. Refrigerant pipe length and height difference:
Modle
AMW3-24U4SKC
AMW4-28U4SKC
AMW2-20U4SNC
AMW2-16U4SGC
Pipe length per. Indoor unit（a/b/c/d） 25m 20m
Total pipe length for multi-system (a+b+c+d) 60m 40m
Height difference (I.D ~ O.D) 15m 15m
Height difference (I.D ~ I.D) 7.5m 7.5m
*Do your best to reduce the pipe length. Long pipe may cause capacity of the indoor unit incline.
Total refrigerant pipe length
Outdoor unit precharged
0m~20m 20m～60m
AMW3-24U4SKC 2100g 0g
AMW4-28U4SKC 2400g 0g
Xg = 15g / m × (Total pipe length(m) - 20)
Total refrigerant pipe length
Outdoor unit precharged
0m~15m 15m～40m
AMW2-20U4SNC 1400g
AMW2-16U4SGC 1300g
0 Xg = 15g / m × (Total pipe length(m) - 15)
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