Haier MVAH018MV2AA User manual

SYJS-07-2017 REV.A Edition: 2017-07
Constant Air Volume Duct
Service Manual

CONTENTS
1. Feature............................................................................................................................................................... 1
2. Specication ..................................................................................................................................................... 2
3. Dimension ......................................................................................................................................................... 4
4. Piping diagram.................................................................................................................................................. 7
5. Wiring diagram ................................................................................................................................................. 8
6. Electric characteristics .................................................................................................................................. 10
7. Airow and static pressure curves............................................................................................................... 11
8. Sound pressure level ..................................................................................................................................... 14
9. Installation....................................................................................................................................................... 15
9.1 Parts and functions.................................................................................................................................. 15
9.2 Safety......................................................................................................................................................... 15
9.3 Maintenance.............................................................................................................................................. 18
9.4 Fault checkup ........................................................................................................................................... 19
9.5 Installation procedures............................................................................................................................ 20
9.6 Electrical wiring........................................................................................................................................ 28
10. PCB Photo..................................................................................................................................................... 31
11. Dip switch setting......................................................................................................................................... 33
11.1 0151800244 PCB .................................................................................................................................... 33
11.2 0151800227A PCB ................................................................................................................................. 34
12. Indoor unit control........................................................................................................................................ 35
13. Failure code .................................................................................................................................................. 38
14. Troubleshooting ........................................................................................................................................... 39
15. Capacity......................................................................................................................................................... 45

1
1. Feature
• DC constant air ow fan motor, getting higher efciency and 0-200Pa auto adjusted ESP
• Capacity from 2.2kW to 16kW, suitable for variable demands.
• Built-in high lift drain pump
• Pre-set lter and fresh air inlet to improve indoor air quality.
• Only 280mm thickness makes it possible for installation in limited spaces

2
2. Specication
MVAH018MV2AA MVAH024MV2AA MVAH030MV2AA
Rated Cooling Capacity Btu/hr 18,000 24,000 30,000
Rated Heating Capacity Btu/hr 20,000 27,000 34,000
Voltage,Cycle,Phase V/Hz/- 208/230-60-1 208/230-60-1 208/230-60-1
Fan Speed Stages 5+Auto 5+Auto 5+Auto
Airow (Turbo/High/Med/Low/
Quiet) CFM 618/529/482/435/347 765/647/588/529/424 941/824/735/647/529
Motor Speed (Turbo/High/Med/
Low/Quiet) RPM 1178/1038/968/891/748 1015/864/786/720/626 1190/1077/990/864/720
Max. External Static Pressure
in.W.G (Pa) 0.80(200) 0.80(200) 0.80(200)
Indoor Sound Level dB (Turbo/
High/Med/Low/Quiet) 45/40/38/36/32 41/38/35/33/30 44/42/40/38/34
Dimension: Height in (mm) 11 (280) 11 (280) 11 (280)
Dimension: Width in (mm) 29 1/2 (750) 37 3/8 (950) 37 3/8 (950)
Dimension: Depth in (mm) 25 (635) 25 (635) 25 (635)
Weight (Ship/Net)- lbs (kg) 75/63.9 (34/29) 86/75 (39/34) 86/75 (39/34)
Connections Flare Flare Flare
Liquid O.D. in 1/4 3/8 3/8
Suction O.D. in 1/2 5/8 5/8
Drainpipe Size O.D. in 111
Internal Condensate Pump Standard Standard Standard
Max. Drain-Lift height in(mm) 23 5/8 (600) 23 5/8 (600) 23 5/8 (600)

3
MVAH036MV2AA MVAH042MV2AA MVAH048MV2AA
Rated Cooling Capacity Btu/hr 36,000 42,000 48,000
Rated Heating Capacity Btu/hr 40,000 47,000 54,000
Voltage ,Cycle,Phase V/Hz/- 208/230-60-1 208/230-60-1 208/230-60-1
Fan Speed Stages 5+Auto 5+Auto 5+Auto
Airow (Turbo/High/Med/Low/
Quiet) CFM 1078/988/888/824/720 1200/1129/1047/953/860 1330/1235/1129/1047/960
Motor Speed (Turbo/High/Med/
Low/Quiet) RPM 1390/1193/943/823/721 1400/1200/950/830/728 1448/1250/1110/958/825
Max. External Static Pressure
in.W.G (Pa) 0.80(200) 0.80(200) 0.80(200)
Indoor Sound Level dB (Turbo/
High/Med/Low/Quiet) 46/43/41/39/35 47/44/42/40/36 49/46/44/41/37
Dimension: Height in (mm) 11 (280) 11 (280) 11 (280)
Dimension: Width in (mm) 53 7/8 (1370) 53 7/8 (1370) 53 7/8 (1370)
Dimension: Depth in (mm) 29 1/8 (740) 29 1/8 (740) 29 1/8 (740)
Weight (Ship/Net)- lbs (kg) 136.7/119 (62/54) 136.7/119 (62/54) 136.7/119 (62/54)
Connections Flare Flare Flare
Liquid O.D. in 3/8 3/8 3/8
Suction O.D. in 5/8 5/8 5/8
Drainpipe Size O.D. in 2 3 4
Internal Condensate Pump Standard Standard Standard
Max. Drain-Lift height in(mm) 23 5/8 (600) 23 5/8 (600) 23 5/8 (600)

4
3. Dimension
MVAH018MV2AA dimension
)
)
)
11/16( ) 11/16( )
)
)
()
)
)
6( ) )
( )
( )
)
6 11/16
()(
(111) ( ) (111)
( )
1 11/16 ()
)
( )
Air outlet
(）
)
（）
))
( )
( )
( )
11()
1
( )
( )
Unit:inch(mm)

5
MVAH024/302MV2AA dimension
29 1/8（740)
2 9/16
(65)
7 5/16
(185)
1 5/8 (41)
7 7/8 (200)
1 9/16 (39)
Air return
32 11/16(830)
3 1/8
(80)
3 1/8
(80)
2(50)
9/16(15)
1 11/16(43)
Air outlet
Gas pipe
Liquid pipe
Drainage hole
Name
Drainage hole of drain pan
Hanging bolt
A
B
C1
C2
E
DWires connection hole
Fresh air inlet
Fresh air outlet
F
G
29 1/2(750)
11/16(18)11/16(18)
82
Electrical box
1 1/8(28)
18 9/16(472)
5 5/16 (135)
2 5/16(58)
2 5/8(67)
6(152)10 5/16(262)
4 7/16 (113)
5 1/2 (139)
3 9/16
(90)
4-Ø3/16(4)
Ø4 7/8(124)
Ø6 11/16
(170)
44-Ø3/16(4)
Ø6 11/16
(170)
18 3/8
(467）
25(635)1 3/16
（30）
20 1/16(510))
18 9/16(471)
4 1/8 (105)
9 13/16 (250)
6 7/8 (175)
11(280)
1
Unit:inch(mm)

6
MVAH024/302MV2AA dimension
Gas pipe
Liquid pipe
Drain hole
Drain hole of drain pan
A
B
C1
Name
C2
Wiring connector hole
Hanging bolt
F
G
Fresh air inlet
Fresh air outlet
D
E
Air return
Air outlet
Electrical box
50 3/8(1280) 2 1/2(64)
2 1/2(64)
9 1/4(235)
15/16(23.5)
7/8(21.5)
55 1/4(1404)
53 7/8(1368)11/16(18) 11/16(18)
3 1/4(82)
1 1/8(28)
7 1/8(180)20 7/8(530)
47 1/4(1200)
4 1/8(104)4 1/8(104)
6 3/4(170)
2(50)
1 11/16(43)
9/16(15)
4-Φ3/16(4)
Φ5 1/16
(124)
6(152) 11 1/4(285)
4-Φ3/16(4)
5 1/2 (139)
Φ6 3/4(170)
Φ6 3/4(170)
4 1/2 (113)
29 1/16(738)
1 3/16(30)
72 5/8 (1845)
53(1845)
18 7/16(468)
16(405)
16(405)
11(280)
9 7/8(250)
18 3/8(467)
1 3/16(30)
3 9/16(90)
2 5/16(59)
2 13/16(71)
Unit:inch(mm)

7
4. Piping diagram
TC2
EEV
Liquid pipe Gas pipe
TC1
Fan
TA
 
Filter Filter
Indoor heat exchanger

8
5. Wiring diagram
LED1、2
LED3、4
LED5
C
B
A
LN
Y/G
1PH,220-240V
(208/230V)，～ 50/60Hz
CN1 CH1
FUSE
250
VACT5A
C
B
A
Q
P
CN15 CN22-1
2
1
2
1
WH
CN36
1 1
CN13 R
3 3
2 2
12
12
CN16 BL
1 12
25 4
3
5 4
3
6 6
CN10 R
SW01
SW03
123
CN18 G
123
CN19 B
12
CN20
G
BL
CN4
2
1
2
1
123
123
123
123
TC2
TC1
12
12
TA
CN18GCN19 BG 02NC
CN21
CN31 R
WH
LED4
LED3
LED5
LED6
LED7
CN35
WH
1
12
25 4
3
5 4
3
CN11
BL
1
12
25 4
3
5 4
3
PUMP
PCB
123
CN23 WH
4
C B A
CN22 WH
To PowerSupply
Transmission
(To O.D unit)
Wired Controller
Room Card
Float Switch
Ambient
Sensor
Left/Right Swing2
Up/Down Swing1
Gas Pipe
Sensor
Liquid Pipe
Sensor
EEV
PMV
M
~
DC Slim Duct Wiring Diagram
BL
125 4
3
CN11-1
Up/Down
*Dashed parts are optional
12
CN17 WH
Colours:
B : Black
BL: Blue
Y : Yellow
G : Green
R : Red
WH: White
LED Definition
tinuroodnI&rellortnocderiW
Indoor unit &Outdoor unit
Error indicate
L-RXD
LED1LED2
12
CN38 TC5
Y
Dcfan1-L
Dcfan1-N
Heater-N
CH5 CH3
CH2
Heater-L
CH4
DCFAN
CN6
WH
5
3
1 1
3
5
66
22
44
1 1
WH
33
2 2
CN9
5V
COM
GND
Y/G
1PH,220-240V (208/230V),50/60H
z
MVAH018/024/030MV2AA