Haier MRV SII AU042FNEUA User manual

Service Manual
MRV SII
SYJS-02-2021 REV.A Edition: 2021-02

2
CONTENTS
1. General Information...............................................................................................................................................1
2. Specification ..........................................................................................................................................................4
3. Dimension .............................................................................................................................................................8
4. Function Parts layout ............................................................................................................................................9
5. Center of gravity .................................................................................................................................................10
6. Refrigerant Circuit ............................................................................................................................................... 11
7. Wiring Diagram....................................................................................................................................................13
8. Performance Curves ...........................................................................................................................................15
9. Selection Procedure ............................................................................................................................................19
10. Operation Range ...............................................................................................................................................20
11. Noise Level ........................................................................................................................................................21
12. Outdoor Installation ...........................................................................................................................................22
12.1 Safety ...........................................................................................................................................................22
12.2 Installation instruction...................................................................................................................................24
13. PCB Photo.........................................................................................................................................................39
14. Dip Switch Setting .............................................................................................................................................40
15. Monitor Tools .....................................................................................................................................................42
16. Outdoor Unit Control .........................................................................................................................................44
17. Failure Code......................................................................................................................................................47
18. Troubleshooting.................................................................................................................................................50

1
1. General Information
1.1 Indoor units
4-WAY CASSETTE TYPE/PB-700lB
AB052MCERA
AB072MCERA
AB092MCERA
AB122MCERA
AB162MCERA
AB182MCERA(C)
ROUND-WAY SMART AIR FLOW CASSETTE/ PB-
950KB
AB072MRERA
AB092MRERA
AB122MRERA
AB162MRERA
AB182MRERA
AB242MRERA
AB282MRERA
AB302MRERA
AB382MRERA
AB482MRERA
AB602MRERA
4-WAY CASSETTE TYPE/PB-950JB
AB182MCERA
AB242MCERA
AB282MCERA
AB302MCERA
AB382MCERA
AB482MCERA
MINI 4-WAY CASSETTE TYPE/PB-620KB
AB052MCERA(M)
AB072MCERA(M)
AB092MCERA(M)
AB122MCERA(M)
AB162MCERA(M)
AB182MCERA(M)
ONE WAY CASSETTE TYPE/P1B-1050IB
AB052MAERA
AB072MAERA
AB092MAERA
AB122MAERA
2-WAY CASSETTE TYPE/ P1B-1055IB
AB072MBERA
AB092MBERA
AB122MBERA
AB162MBERA
AB182MBERA
LOW ESP DUCT TYPE
AD072MLERA
AD092MLERA
AD122MLERA
AD162MLERA
AD182MLERA
AD242MLERA
SLIM LOW ESP DUCT
AD072MSERA
AD092MSERA
AD122MSERA
AD162MSERA
AD182MSERA
AD242MSERA
DC SLIM LOW ESP DUCT
AD072MSERA(D)
AD092MSERA(D)
AD122MSERA(D)
AD162MSERA(D)
AD182MSERA(D)
AD242MSERA(D)

2
MED ESP DUCT TYPE (80/120Pa)
AD182MZERA
AD242MZERA
AD282MZERA
AD302MNERA
AD382MNERA
AD482MNERA
MED ESP DUCT TYPE (50/96Pa)
AD182MMERA
AD242MMERA
AD282MMERA
AD302MMERA
AD382MMERA
AD482MMERA
MED ESP DUCT TYPE (50/100Pa)
AD052MJERA
AD072MJERA
AD092MJERA
AD122MJERA
AD162MJERA
AD182MJERA
AD242MJERA
AD282MJERA
AD302MJERA
AD382MJERA
AD482MJERA
CONSTANT AIR VOLUME DUCT TYPE
AD072MQERA
AD092MQERA
AD122MQERA
AD152MQERA
AD182MQERA
AD242MQERA
AD282MQERA
AD302MQERA
AD362MQERA
AD422MQERA
AD482MQERA
AD542MQERA
HlGH ESP DUCT TYPE
AD182MHERA
AD242MHERA
AD282MHERA
AD302MHERA
AD382MHERA
AD482MHERA
CONVERTlBLE TYPE
AC092MCERA
AC122MCERA
AC162MCERA
AC182MCERA
AC242MCERA
AC282MFERA
AC302MFERA
AC382MFERA
AC482MFERA
EK HIGH WALL
AS072MGERA
AS092MGERA
AS122MGERA
AS162MGERA
AS182MGERA
AS242MGERA
BUILIT-IN FLOOR STANDING
AE072MLERA
AE092MLERA
AE122MLERA
AE162MLERA
AE182MLERA
AE242MLERA

3
N HIGH WALL
AS052MNERA AS052MFERA
AS072MNERA AS072MFERA
AS092MNERA AS092MFERA
AS122MNERA AS122MFERA
AS162MNERA AS162MFERA
AS182MNERA AS182MFERA
AS242MNERA AS242MFERA
AS282MNERA
AS302MNERA
CONSOLE
AF052MAERA
AF072MAERA
AF092MAERA
AF122MAERA
AF182MAERA
NEW CONSOLE
AF052MBERA
AF072MBERA
AF092MBERA
AF122MBERA
AF182MBERA
CONVERTlBLE TYPE(New)
AC092MDERA AC282MDERA
AC122MDERA AC302MDERA
AC162MDERA AC382MDERA
AC182MDERA AC482MDERA
AC242MDERA

4
2. Specication
Model AU042FNERA
Power supply Ph/V/Hz 1/220~240/50/60
Cooling
Rated capacity kW 12.10
Rated capacity kBtu/h 41.3
Rated power input kW 4.25
Max. power input kW 6.0
EER 2.85
Rated current A 20.3
Max. current A 28.3
Heating
Rated capacity kW 12.10
Rated capacity kBtu/h 41.3
Rated power input kW 4.10
Max. power input kW 5.80
COP 2.95
Rated current A 19.6
Max. current A 27.9
Compressor
Brand Mitsubishi
Model MNB42FFAMC-L
Type Rotary
Compressor quantity 1 INV
Capacity W 13780
Power Input W 4130
Rated current(RLA) A 15.8
Speed rps 60
Crankcase Heater W 28
Refrigerant oil brand Itochu.,LTD.,Shanghai
Refrigerant oil type FV50S
Refrigerant oil charge ml 1400
Outdoor fan
motor
Brand NIDEC/BROAD OCEAN
Model SIC-88FWJ-F1180-1/ZWK511D000001
Voltage 310V
IP Class IP44
Type DC
Insulation class E
Safe class I
Power Input W 225*2
Output W 180*2
Rated current A 0.40
Capacitor μF /
Speed rpm 770
Outdoor fan
Brand SHUNWEI
Model /
Material Plastic
Type Axial
Diameter mm 550
Height mm 200

5
Model AU042FNERA
Outdoor coil
Number of rows 2
Tube pitch(a)x row pitch(b) mm 21*18.186
Fin spacing mm 1.4
Fin type (code) Corrugated
Fin Coating Type optional Hydrophilic aluminum
Salt Spray Test Duration Hour 500
Tube outside dia.and type Internal thread copper tube
mm Ф7
Coil length x height mm 1005*924
Number of circuits 7
Cabinet coating
Coating type Powder Coating
Salt Spray Test Duration Hour 500
Sheet Metal Material Hot zinc plate
Sheet Metal Thickness mm 0.8
Control panel enclosure IP class
Outdoor air ow
standard IP24
m3/h 5400
Outdoor sound level(sound pressure level ) dB(A) 66
Outdoor sound level(sound power level ) dB(A) 77
Outdoor unit
Dimension(W*H*D) mm 950/965/370
Packing (W*H*D) mm 1010/990/458
Net weight kg 90
Gross weight kg 97
Refrigerant Type R410A
Charged volume kg 3.3
Throttle type EEV
Design pressure MPa 4.15
Refrigerant piping
Liquid pipe mm Φ9.52
Gas pipe mm Φ15.88
Total pipe lenth m 120
Max. pipe length(Equivalent/
Actual) m 70
Max.Diff. indoor/outdoor unit m "30
20"
Max.Diff. indoor/indoor unit m 10
Connectable indoor unit ratio % 50-130
Maximum indoor units Piece 5
Connection wiring Power wiring mm212
Signal wiring mm2shield wire：(0.75-2）*2
Operation Range oCCooling: -5~52
Heating: -15~21
Nominal condition:
Indoor temperature (cooling): 27 DB(°C)/19 WB(°C), indoor temperature (heating): 20 DB(°C)/14.5 WB(°C).
Outdoor temperature (cooling): 35 DB(°C)/24 WB(°C), outdoor temperature (heating): 7 DB(°C)/6 WB(°C).
The data is measured with 7.5m equivalent pipe and 0m height difference.
The noise level will be measured in the third octave band limited values in the semi-anechoic chamber, using a
real time analyser calibrated sound intensity meter. It is a sound pressure noise level.

6
Model AU052FNERA
Power supply Ph/V/Hz 1/220~240/50/60
Cooling
Rated capacity kW 14.00
Rated capacity kBtu/h 47.8
Rated power input kW 5.00
Max. power input kW 6.4
EER 2.80
Rated current A 23.9
Max. current A 29.3
Heating
Rated capacity kW 14.00
Rated capacity kBtu/h 47.8
Rated power input kW 4.83
Max. power input kW 6.40
COP 2.90
Rated current A 23.1
Max. current A 29.3
Compressor
Brand Mitsubishi
Model MNB42FFAMC-L
Type Rotary
Compressor quantity 1 INV
Capacity W 13780
Power Input W 4130
Rated current(RLA) A 15.8
Speed rps 60
Crankcase Heater W 28
Refrigerant oil brand Itochu.,LTD.,Shanghai
Refrigerant oil type FV50S
Refrigerant oil charge ml 1400
Outdoor fan
motor
Brand NIDEC/BROAD OCEAN
Model SIC-88FWJ-F1180-1/ZWK511D000001
Voltage 310V
IP Class IP44
Type DC
Insulation class E
Safe class I
Power Input W 225*2
Output W 180*2
Rated current A 0.40
Capacitor μF /
Speed rpm 770
Outdoor fan
Brand SHUNWEI
Model /
Material Plastic
Type Axial
Diameter mm 550
Height mm 200

7
Model AU052FNERA
Outdoor coil
Number of rows 2
Tube pitch(a)x row pitch(b) mm 21*18.186
Fin spacing mm 1.4
Fin type (code) Corrugated
Fin Coating Type optional Hydrophilic aluminum
Salt Spray Test Duration Hour 500
Tube outside dia.and type Internal thread copper tube
mm Ф7
Coil length x height mm 1005*924
Number of circuits 7
Cabinet coating
Coating type Powder Coating
Salt Spray Test Duration Hour 500
Sheet Metal Material Hot zinc plate
Sheet Metal Thickness mm 0.8
Control panel enclosure IP class
Outdoor air ow
standard IP24
m3/h 5400
Outdoor sound level(sound pressure level ) dB(A) 68
Outdoor sound level(sound power level ) dB(A) 79
Outdoor unit
Dimension(W*H*D) mm 950/965/370
Packing (W*H*D) mm 1010/990/458
Net weight kg 90
Gross weight kg 97
Refrigerant Type R410A
Charged volume kg 3.3
Throttle type EEV
Design pressure MPa 4.15
Refrigerant piping
Liquid pipe mm Φ9.52
Gas pipe mm Φ15.88
Total pipe lenth m 120
Max. pipe length(Equivalent/
Actual) m 70
Max.Diff. indoor/outdoor unit m "30
20
Max.Diff. indoor/indoor unit m 10
Connectable indoor unit ratio % 50-130
Maximum indoor units Piece 6
Connection wiring Power wiring mm212
Signal wiring mm2shield wire：(0.75-2）*2
Operation Range oCCooling: -5~52
Heating: -15~21
Nominal condition:
Indoor temperature (cooling): 27 DB(°C)/19 WB(°C), indoor temperature (heating): 20 DB(°C)/14.5 WB(°C).
Outdoor temperature (cooling): 35 DB(°C)/24 WB(°C), outdoor temperature (heating): 7 DB(°C)/6 WB(°C).
The data is measured with 7.5m equivalent pipe and 0m height difference.
The noise level will be measured in the third octave band limited values in the semi-anechoic chamber, using a
real time analyser calibrated sound intensity meter. It is a sound pressure noise level.

8
3. Dimension
AU042FNEUA AU052FNEUA