Hisense AMS-09UR4SNZA2, AMS-12UR4SNZA2, AMW2-20U4SKB, AMW3-24U4SKB, AMW4-28U4SKB Service Manual

MULTI-SPLIT TYPE AIR CONDITONER

SERVICE MANUAL

V: 2.0

●

INDOOR UNIT:

AMS-09UR4SNZA2 AMS-12UR4SNZA2

●INDOOR UNIT:

AMW2-20U4SKB AMW3-24U4SKB AMW4-28U4SKB

Hisense Corporation

Table of contents

Page 1．OPERATING RANGE 1

2．SPECIFICATION 2 2-1 Unit specifications 2 2-2 Major component specifications 4 2-3 Other component specifications 5 3．OUTLINES AND DIMENSIONS 6 3-1 INDOOR 6 3-2 OUTDOOR 7 4．REFRIGERANT FLOW DIAGRAM 9 4-1 Refrigerant flow diagram 9 4-2 Evacuation procedures 11 4-3 Evacuation direction 12 5．ELECTRICAL DATA 13 5-1 Electric wiring diagrams 13 5-2 Electric control 15 5-3 Sensor parameter 18 6．CONTROL MODE 20 6-1 Indoor control mode 16 6-2 Outdoor control mode 25 7．TROUBLESHOOTING 31 7-1 Error codes 31 8．CHECKING COMPONENTS 33 8-1 Check refrigerant system 33 8-2 Check parts unit 35 9．PARTS LIST 39 9-1 Indoor 39 9-2 Outdoor 44

11.. OOPPEERRAATTIINNGG RRAANNGGE

E

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

2

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 AMW3-24U4SKB

AMW4-28U4SKB AMW2-20U4SNB

Function Cooling Heating Cooling Heating Cooling Heating Power supply a.c 220V~230V/50Hz

Capacity kW 7.0 8.0 8.2 9.0 5.8 6.4 Dehumidification

l /h

---- ---- ---- ---- ---- ----

Capacity

Air flow m

3

/h ---- ---- ---- ---- ---- ---Rated current A 9.7 10.7 10.7 11.1 7.73 8.0 Rated input kW 2.18 2.22 2.4 2.5 1.7 1.75 Auxiliary heater A -----Power factor % 99.9％ 99.9％ 99.9％

Electrical data

Max. current A 15.0 15.0 14.5

SEER/HSPF ----

Model JU1015D5 JU1015D5 SNB130FGYM

Compressor

Winding resistance (at25℃)

Ω 0.661/0.650/0.639 0.661/0.650/0.639 0.58（20℃）

Model YDK70-6H-3 YDK70-6H-3 YDK55-6I-8 Outdoor

fan motor

Winding resistance (at20℃)

Ω M:78;A:80 M:78;A:80 M:185;A:200 Net size L×W×H cm 75×19×25 103×34×84 98×35×64 Package size

L×W×H cm 84×27×31 112×46×98 108×42×72

Net weight kg 8.0 67 45 Gross weight kg 9.5 72 51

Liquid pipe mm 6.35 6.35 Gas pipe mm 9.52 9.52

Refrigerant piping

Connection method Flare Flare Air direction ---- ---- ----

Sound level (Hi) dB 57 57 57 Fan speed (Hi) rpm 830 830 840 Fan speed regulator 3 3 3

Refrigerant filling capacity(R410a)

kg 2.2 2.5 1.4

Special remarks

Throttle mode

EEV EEV EEV

22.. SSPPEECCIIFFIICCAATTIIOONNSS

3

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-09UR4SNZA2 AMS-12UR4SNZA2 Function Cooling Heating Cooling Heating Power supply a.c 220V~230V/50Hz

Capacity kW 2.6 3.0 3.2 3.8 Dehumidification l /h 1.1 1.1 1.4 ----

Capacity

Air flow m3/h 420 520 450 560 Running current A 0.18 0.18 0.18 0.18 Rated input kW 40 40 40 40 Auxiliary heater A ---Power factor % ----

Electrical data

Starting current A ----

SEER/HSPF ----

Model ----

Compressor

Winding resistance (at25℃)

Ω ----

Model YYW16-4-532 YYW16-4-532 Indoor

fan motor

Winding resistance (at20℃)

Ω M:364;A:400.5; M:364;A:400.5;

Model ---- Outdoor

fan motor

Winding resistance (at20℃)

Ω ----

Net size L×W×H cm

75×25×19

Package size L×W×H cm

84×31×27

Net weight kg 8.0 8.0 Gross weight kg 9.5 9.5

Liquid pipe mm 6.35 Gas pipe mm 9.52

Refrigerant piping

Connection method ---Air direction 6 6

Sound level (Hi) dB 37 37 Fan speed (Hi) rpm 1200 1300 Fan speed regulator

Refrigerant filling capacity(R410a)

kg ----

Special remarks

Throttle mode ----

22.. SSPPEECCIIFFIICCAATTIIOONNSS

4

2-2. Major component specifications

2-2-1.INDOOR FAN MOTOR

PARAMETER

ELECTRIC

PERFORMANCE

AMS-09UR4SNZA2 AMS-12UR4SNZA2

Motor model YYW16-4-532 YYW16-4-532

Rated power source 220V 50Hz 220V 50Hz

Phases/Poles 1/4 1/4

Rated load output(W) 16 16

Rated speed(r/min) -- --

Ambient temperature(℃)

-5℃～+43℃. -5℃～+43℃.

2-2-2 OUTDOOR FAN MOTOR

PARAMETER ELECTRIC

PERFORMANCE

AMW3-24U4SKB

AMW4-28U4SKB

AMW2-20U4SNB

Motor model YDK70-6H-3

YDK55-6I-8

Rated power source 220V 50Hz 220V 50Hz

Phases /Poles 1/6 1/6

Rated load output(W) 65 47 Ambient temperature(℃) -5℃～+43℃. -5℃～+43℃.

2-2-3. COMPRESSOR

PARAMETER ELECTRIC

PERFORMANCE

AMW3-24U4SKB

AMW4-28U4SKB

AMW2-20U4SNB

Compressor model JU1015D5 SNB130FGYM

Compressor type Rotary Rotary

Rated power 1585W 1190W

Current (A) 8.8 8.1

Motor type DC brushless motor DC brushless motor

Starting type DC Inverter DC Inverter

Motor

Winding resistance

0.661/0.650/0.639Ω(at 25℃)

U-V/V-W/W-U

0.58/0.58/0.58Ω(at 20℃)

U-V/V-W/W-U

Number of cylinder 2 2

Oil type HAF68D1 or HAF68D1U

or α8HES-H

FV50S

Oil charge (cc) 840 350 Ambient temperature(℃) -5℃～+43℃. 5℃～+43℃

22.. SSPPEECCIIFFIICCAATTIIOONNSS

5

2-3. Other component specifications

2-3-1. INDUCTANCE

PARAMETER

ELECTRIC

PERFORMANCE

AMW3-24U4SKB

AMW4-28U4SKB

AMW2-20U4SNB

Inductance model

RC800HS-3

R2050HSB

Rated power source 220V 50Hz 220V 50Hz

Rated current(A) 20 20

Rated inductance

800(μH)±20% 5.2（mH）±10%

Ambient temperature(℃)

-30℃～+155℃. -30℃～+220℃.

2-3-2. FILTER

PARAMETER ELECTRIC

PERFORMANCE

AMW3-24U4SKB

AMW4-28U4SKB

AMW2-20U4SNB

Filter model RTNF250-25T068X-03LF 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℃.

2-3-4. STEPPER MOTOR

PARAMETER ELECTRIC

PERFORMANCE

AMS-09UR4SNZA2 AMS-12UR4SNZA2

Stepper Motor model 24BYJ48-CP 24BYJ48-CP

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

6

3-1. INDOOR（MODEL: AMS-09UR4SNZA2、AMS-12UR4SNZA2）

23mm631mm

94mm

190mm

250mm

750mm

50mm

65mm

33.. OOUUTTLLIINNEESS AANNDD DDIIMMEENNSSIIOO

7

3-2.OUTDOOR（MODEL: AMW2-20U4SNB）

33.. OOUUTTLLIINNEESS AANNDD DDIIMMEENNSSIIOO

8

3-3.OUTDOOR（MODEL: AMW3-24U4SKB、AMW4-28U4SKB）

44.. RREEFFRRIIGGEERRAANNTT FFLLOOWW DDIIAAGGRRAAM

M

9

4-1. Refrigerant flow diagram ：

MODEL：AMW3-24U4SKB、AMW4-28U4SKB

Filter

B机

A机

C机

B机

D机

C机

D机

Remark： The part is only for AMW4-28U4SKB COOLING CYCLE HEATING CYCLE

44.. RREEFFRRIIGGEERRAANNTT FFLLOOWW DDIIAAGGRRAAM

M

10

MODEL：AMW2-20U4SNB

EEV B

EEV A

4-way valve

Filter

B

机

A机

B机

Filter

44.. RREEFFRRIIGGEERRAANNTT FFLLOOWW DDIIAAGGRRAAM

M

11

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

M

12

4-3. Evacuation direction：

MAX. Refrigerant pipe length and height difference:

Modle

AMW3-24U4SKB AMW4-28U4SKB

AMW2-20U4SNB

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 AMW3-24U4SKB 2200g 0g AMW4-28U4SKB 2500g 0g

Xg = 15g / m × (Total pipe length(m) - 20)

Total refrigerant pipe length

Outdoor unit precharged

0m~15m 15m～40m AMW2-20U4SNB 1400g 0 Xg = 15g / m × (Total pipe length(m) - 15)

55.. EELLEECCTTRRIICCAALL DDAATTAA

13

5-1.Electrical wiring diagrams

INDOOR：AMS-09UR4SNZA2、AMS-12UR4SNZA2

OUTDOOR： 1）AMW4-28U4SKB

3( )

WHT

BLK

AUXILIARY HEATER

CN10

C

N

9

CN201

T-DISS

CN205

SUC-D

REDYEL

22211

12 1

EXPANSION VALVE D

ELECTRONIC

5

CN404 D-EV BLU

432

2341166

S

I

-

D

WHT

T02

1

YLW/GRN

4(SI)

2(N)

TERMINAL

1(L)

PANEL D

BLU

BRN

CONNECTION

CAPACITOR

1310785

BLU

RED

4(SI)

2(N)

1(L)

4(SI)

2(N)

1(L)

2(N)

1(L)

FAN MOTOR

4-WAY VALVE

ELECTRIC WIRING DIAGRAM

COMPRESSOR

BLUWHT

V

W

449

9

8

7

6

5

IPM BOARD

-

BRN

BLU

BRIDGE

AC

+

-

ELECTROLYTIC

+

BLU

BRN

C

N

4

CN1

PRESSUR

CN8 WHT

321

7

654

5648

899

10

RECTIFYING

VA

FILTER

CN7 FM WHT

1221

CN6 VA BLK

21

4

3

4

3

CN5

CN3

CN2

POWER FILTER BOARD

P2

+

P1

CAPACITOR

YLW

1

2

12 1

114423

23

8

65

5677 9910

10

BLU

2

BRN

2

L2

ORG

331

2

1

2

889

9

4

C

N

5

0

1

W

H

T

553

2

3

2

116

7

6

7

6 6

CN301 WHT

CN901 WHT

CN702 RED

INDUCTOR

L1

T1 T2 T3T1 T2T3T2 T3

6

123

456

4

65

54321

32154

654

56

4

T1

121

11222112233

CN202

YEL

CN203

BLU

GREEN

6 6

11432

234

12345

4321 5

CN402 B-EV WHT

WHT BLK

T05

BLK

RED

1

T

0

4

1

S

I

-

A

S

I

-

B

S

I

-

C

2

CN401 A-EV RED

11543

345

BLU

T

0

1

ORG

T03

6 6

CN204

T-DEF CN207

PIP-D

CN206

T-PIP-A -B -C T-COIL T-SUC T-OUTT-SUC-A -B -C

CONTROL BOARD

CN403 C-EV BLK

5 5

YLW/GRN

N

-

U

RED

W

H

T

EXPANSION VALVE B

EXPANSION VALVE A

ELECTRONIC

ELECTRONIC ELECTRONIC

EXPANSION VALVE C

CM

FM

POWER

PANEL

TERMINAL

BLU

FUSEBRN

CONNECTION

BRN

BLU

PANEL C

1(L)

TERMINAL

YLW/GRN

2(N)

4(SI)

CONNECTION

YLW/GRN

PANEL B

TERMINAL

B L

U

BRN

CONNECTION

PANEL A

TERMINAL

YLW/GRN

B L U

BRN

YLW/GRN

BRN

Hisense AMS-09UR4SNZA2, AMS-12UR4SNZA2, AMW2-20U4SKB, AMW3-24U4SKB, AMW4-28U4SKB Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual