Haier MRV III-RC User manual

SYJS-08-2016 REV.A Edition: 2016-08
Service Manual
MRV III-RC (T1 208-230V)

CONTENTS
1. General Information.................................................................................................................. 1
1.1 Feature ................................................................................................................................. 1
1.2 Products Lineup.................................................................................................................. 10
2. Outdoor Units ......................................................................................................................... 15
2.1 Specification ....................................................................................................................... 15
2.2 Dimension........................................................................................................................... 37
2.3 Piping diagram.................................................................................................................... 39
2.4 Wiring diagram.................................................................................................................... 51
2.5 Operation range.................................................................................................................. 53
2.6 Capacity calculation due to capacity modification coefficient ............................................. 54
2.7 Sound pressure level .......................................................................................................... 58
2.8 Outdoor installation............................................................................................................. 59
2.9 Branch pipe dimensions ..................................................................................................... 84
2.10 Gather pipe dimension...................................................................................................... 86
2.11 Trial operation ................................................................................................................... 87
3. Valve Pipe Box ....................................................................................................................... 97
3.1 Specification ....................................................................................................................... 97
3.2 Dimension........................................................................................................................... 98
3.3 Wiring diagram.................................................................................................................... 99
3.4 Valve box installation ........................................................................................................ 100
4. Outdoor Unit Electric Control................................................................................................ 120
4.1 PCB photo and dip switch setting ..................................................................................... 120
4.2 Outdoor unit parameters observation ............................................................................... 128
4.3 Outdoor unit control .......................................................................................................... 135
5. Maintenance......................................................................................................................... 138
5.1 Failure code ...................................................................................................................... 138
5.2 Troubleshooting ................................................................................................................ 148
AppendixI: Sensor Resistance Table........................................................................................ 181

1
General Information
1. General Information
1.1 Feature
1.1.1
Variable Operation Mode in One System
Heating Heating Heating Cooling Cooling CoolingStop
Cooling
only
Cooling & Heating
High pressure gas pipe
Suction gas pipe
Liquid pipe
Refrigerant pipe not ow
All Cooling Circuit
Q
=ï ~ó=î ~äî É
=
^Å
Åì =í~åâ=
s m=_ lu==
K=
láä
ëÉéK=
láä
ëÉéK=
`çãéK= J==
•12/14/16HP double compressor module for example
High pressure gas pipe Suction gas pipe Liquid pipe
Accu tank
4way valve
oil
sep
oil
sep
comp.
comp.
Gas-liquid sep
VP BOX

2
SYSTEM INTRODUCTION
All Heating Circuit
•12/14/16HP double compressor module for example
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
Cooling > Heating Circuit
12/14/16HP double compressor module for example
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
Cooling = Heating Circuit
12/14/16HP double compressor module for example
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipeLiquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
001 002

3
General Information
•12/14/16HP double compressor module for example
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
Cooling > Heating Circuit
12/14/16HP double compressor module for example
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
Cooling = Heating Circuit
12/14/16HP double compressor module for example
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipeLiquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
001
002
Cooling < Heating Circuit

4
SYSTEM INTRODUCTION
Light Part Load Cooling
12/14/16HP double compressor module for example, little indoor heating, others off
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
Light Part Load Heating
12/14/16HP double compressor module for example, little indoor heating, others off
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
USER FRIENDLY OUTDOOR STRUCTURE
Core Technologies and Parts
Model name Power Supply Dimension
Max.
indoor units
Max.capacity
of indoor(kw)
Patent fan design and DC fan motor
A ir flow improved by 17.5% with patent
fan design
N oise reduced 3 dB(A) with DC fan motor
4 way air return
Reduce the heat exchanger
height(650mm), and the upper and lower
wind speed uniform and high efficiency
Double EEV design
The double EEV control the 2 stages heat
exchanger separately, which can adjust
the condenser volume
DC Inverter scroll Compressor
D C inverter scroll compressor from Mitsubishi electric
F or big module, also with another
fixed-speed compressor from mitsubishi electric
2 stages heat exchanger
Separate control and heat exchanger
size can be adjusted, effectively cope
with small load operation, to ensure
reliable operation
Forced heat dissipation fan
Forced heat dissipation fan inside the
electric control box, to ensure the stable
Internal temperature and stable system
operation
002
Light Part load Cooling

5
General Information
OUTDOOR STRUCTURE
Light Part Load Cooling
12/14/16HP double compressor module for example, little indoor heating, others off
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
Light Part Load Heating
12/14/16HP double compressor module for example, little indoor heating, others off
4 way valve
Accu tank
VP BOX
High pressure gas pipe Suction gas pipe Liquid pipe
Comp.
Oil
sep.
Oil
sep.
Comp. Gas-liquid sep
USER FRIENDLY OUTDOOR STRUCTURE
Core Technologies and Parts
Model name Power Supply Dimension
Max.
indoor units
Max.capacity
of indoor(kw)
Patent fan design and DC fan motor
A ir flow improved by 17.5% with patent
fan design
N oise reduced 3 dB(A) with DC fan motor
4 way air return
Reduce the heat exchanger
height(650mm), and the upper and lower
wind speed uniform and high efficiency
Double EEV design
The double EEV control the 2 stages heat
exchanger separately, which can adjust
the condenser volume
DC Inverter scroll Compressor
D C inverter scroll compressor from Mitsubishi electric
F or big module, also with another
fixed-speed compressor from mitsubishi electric
2 stages heat exchanger
Separate control and heat exchanger
size can be adjusted, effectively cope
with small load operation, to ensure
reliable operation
Forced heat dissipation fan
Forced heat dissipation fan inside the
electric control box, to ensure the stable
Internal temperature and stable system
operation
002
USER FRIENDLY OUTDOOR STRUCTURE
DC Inverter scroll compressor
100
0
Mode Heat Recovery system operation Part Load
Energy
Saving
(10HP outdoor
each indoor 2HP)
Cooling only
(10HP outdoor)
Heating only
Cooling>Heatinng
Cooling=Heatinng
Cooling<Heatinng
Indoor required
Load
Comp.Load Condenser Load
100
0
Indoor required
Load
Comp.Load Condenser Load
100
0
Indoor required
Load
Comp.Load Condenser Load
6HP
100
0
Indoor required
Load
Comp.Load Condenser Load
4
H
P
2
H
P
100
0
Indoor required
Load
Comp.Load Condenser Load
6HP
2
HP
2HP
Cooling
2HP
Cooling
2HP
Cooling
2HP
Cooling
2HP
Cooling
2HP
Cooling
2HP
Cooling
2HP
Cooling
2HP
Heatinng
2HP
Cooling
2HP
Cooling
2HP
Cooling
2HP
Heatinng
2HP
Heatinng
2HP
Heatinng
2HP
Cooling
2HP
Cooling
2HP
Heatinng
2HP
Heatinng
2HP
Heatinng
2HP
Heatinng
2HP
Heatinng
2HP
Heatinng
2HP
Heatinng
0%
0%
20%
50%
40%
TYPICAL 3 PIPE SYSTEM
The heat discharged from outdoor unit can be used to cooling
Indoor units. It can save energy above 30% averagely
Indoor required
load
Indoor required
load
Indoor required
load
Indoor required
load
Indoor required
load
Comp.load
Comp.load
Comp.load
Comp.load
Comp.load
Condenser Load
Condenser Load
Condenser Load
Condenser Load
Condenser Load
Part Load Energy
Saving
Heat Recovery system operation
Mode
Cooling<Heatinng
Cooling=Heatinng
Cooling>Heatinng
Heating only
Cooling only
(10HP outdoor)
(10HP outdoor
each indoor 2HP)
2HP2HP
2HP
2HP
2HP
2HP
2HP
2HP
2HP2HP
2HP
2HP2HP
2HP 2HP2HP
2HP
2HP
2HP
2HP
2HP
2HP
2HP
2HP

6
1.1.2 High efciency DC inverter scroll compressor, high efciency, low noise.
The highly efcient scroll compressor is equipped with a "Frame Compliance Mechanism" that allows movement
in the axial direction of the frame supporting the cradle scroll. This greatly reduces both leakage and friction loss,
ensuring very high efciency throughout the speed range.
1.1.3 User friendly outdoor structure
Pressure passway
Frame
Scroll back-pressure
chamber
UP
Suction
Discharge
Flexible back-pressure
Chamber
Pressure
increase
Start
Pressure increase
High pressure
Core technologies and parts
Patent fan design and DC fan motor
1
1
2
5
3
3
Double EEV design
4
4 way air return
4
2 stages heat exchanger 5
6
6
-Air flow improved by 17.5% with patent
fan design
-Noise reduced 3 dB/A with DC fan
Motor.
-Reduce the heat exchanger
height(650mm),and the upperand lower
wind speed uniform and high efficiency.
-DC inverterscroll compressorfrom Mitsubishi
Electric
-For big module, also with another fixed-speed
compressorfrom Mitsubishi Electric.
2
-separate control and heat exchanger
size canbe adjusted ,effectivelycope
with small load operation, to ensure
reliable operation .
Forced heat dissipation fan
-Forced heat dissipation fan inside the
Electriccontrol box, to ensure the stable
Internal temperature and stablesystem
Operation.

7
General Information
1.1.4 New big diameter "aviation" fan
The new fan could reduce air loss, air resistance and noise, increase heat exchange efciency. The unit adopts
the 4-way air returned heat exchanger technology. The compressor and condenser are placed in separated
compartments. This structure of outdoor unit can realize lower air resistance, higher heat efciency and lower
noise level.
1.1.5 High efciency DC fan motor
■Efciency increase 45% comparing with AC motor and power input largely decrease
■64 stage speed adjustment plus DC inverter drive, stabilizing compressor discharge pressure and suction
pressure to ensure high system reliability

8
1.1.6 Flexible installation and design
Connected indoor unit quantity can be up to 64 sets in maximum. And the total indoor capacity can be 50% ~ 130%
of outdoor capacity.
If there are multiple outdoor units, the outdoor units will be in running by turns with much longer life. Multiple types
of indoor unit can be chosen for different requirements.
1.1.7 The rst oil 2-stages separation and cross oil return technology in the industry
■1st stage oil separation: built-in oil separating unit, greatly reduced the oil from the compressor discharge
■2nd stage oil separation: external oil separator to separate the small amount oil from discharge
■Cross oil return: on the one hand to ensure the own compressor oil (green line), on the other hand to supply the
redundant oil to other compressor (dotted line)
1.1.8 Heat exchanger adopts the sub-cooling technology, to keep the refrigerant in indoor unit flowing
normally, further to enhance the unit efciency greatly.
Two stage deep sub cooling technology
■1st stage sub cooling added a sub cooling coil to condenser
■2nd stage sub cooling added a stand alone sub cooler
■After further cooling, sub-cooling degree can be up to 30with the heat exchanging capacity per unit mass of
refrigerant improved by 46% and ow resistance reduced by 55%, and running efciency improved by 9%
Conde
nser
1
st
Stage
2
nd
Stage
Running Running
Inverter
Compressor
Oil Separator
Fixed
Compressor

9
General Information
1.1.9 Intelligent defrost
1) Conventional defrost control (left) heating operation after all the outdoor nish the defrost.
2) Amazon outdoor defrosting (right) help each other to accelerate defrosting, not only accelerate defrosting speed,
but also reach rapid heating.
Module1 Heat supply
Module2
0 t1 t2 t3 0 t1 t2 t3 ’t3
Module3
Condenser heat absortion
Condenser heat dissipation
△t
Condenser heat dissipation
1.1.10 Valve pipe (VP)
There are 3 models valve boxes connected between outdoor units and indoor units. The indoor unit can exibly
run cooling or heating as need by connected with the VB device.
One VP device can connect with max.8 sets indoor units. However all the indoor units connected with the same
VP device should run same mode.
High pressure liquid connection
High pressure gas connection
Low pressure gas connection
Indoor liquid connection
Indoor gas connection

10
1.2 Products Lineup
1.2.1 Outdoor Units
Appearance Power supply
(Ph, V, Hz) Model Capacity (kW) Refrigerant
3Ph, 280~230V,
60HZ
AV08CMVUSA 22.4
R410A
AV10CMVUSA 28
AV12CMVUSA 33.5
AV14CMVUSA 40
AV16CMVUSA 45
AV18CMVUSA 50.4
AV20CMVUSA 56
AV22CMVUSA 61.5
AV24CMVUSA 68
AV26CMVUSA 73
AV28CMVUSA 80
AV30CMVUSA 85
AV32CMVUSA 90
AV34CMVUSA 96
AV36CMVUSA 101
AV38CMVUSA 108
AV40CMVUSA 113
AV42CMVUSA 118
AV44CMVUSA 123.5
AV46CMVUSA 130
AV48CMVUSA 135

11
General Information
1.2.2 Indoor units Lineup
4-WAY CASSETTE TYPE/PB-700lB
AB092MCERA
AB122MCERA
AB162MCERA
ROUND-WAY SMART AIR FLOW CASSETTE/
PB-950KC
AB072MRERA
AB092MRERA
AB122MRERA
AB162MRERA
AB182MRERA
AB242MRERA
AB282MRERA
AB302MRERA
AB382MRERA
AB482MRERA
AB602MRERA
4-WAY CASSETTE TYPE/PB-950JB
AB182MCERA
AB242MCERA
AB282MCERA
AB302MCERA
AB382MCERA
AB482MCERA
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)
MED ESP DUCT TYPE (80/120Pa)
AD182MZERA
AD242MZERA
AD282MZERA
AD302MNERA
AD382MNERA
AD482MNERA
MED ESP DUCT TYPE (50/96Pa)
AD182MMERA
AD242MMERA
AD282MMERA
AD302MMERA
AD382MMERA
AD482MMERA

12
HlGH ESP DUCT TYPE
AD182MHERA
AD242MHERA
AD282MHERA
AD302MHERA
AD382MHERA
AD482MHERA
AD722MHERA
AD962MHERA
CONVERTlBLE TYPE
AC092MCERA
AC122MCERA
AC162MCERA
AC182MCERA
AC242MCERA
AC282MFERA
AC302MFERA
AC382MFERA
AC482MFERA
HIGH WALL EEV INSIDE
AS072MGERA
AS092MGERA
AS122MGERA
AS162MGERA
AS182MGERA
AS242MGERA
BUILIT-IN FLOOR STANDING
AE072MLERA
AE092MLERA
AE122MLERA
AE162MLERA
AE182MLERA
AE242MLERA

13
General Information
1.2.3 Appendix Lineup
# Photo Name Model Function Application Comments
1Remote
controller YR-HD Indoor unit operating
Standard for high wall,
console, and optional for
cassette, convertible, duct
2Remote
controller YR-H71 Indoor unit operating
Standard for high wall,
console, and optional for
cassette, convertible, duct
3
Remote
controller
receiver
RE-02 Infrared signal receiver
for remote controller Optional for duct
4Wired
controller YR-E17
Indoor unit operating
and group control
(Max. 16 indoor units)
Standard for cassette,
convertible, duct and built-in
oor standing
5Wired
controller YR-E14
Indoor unit operating
and group control
(Max. 16 indoor units)
Standard for cassette,
convertible, duct and built-in
oor standing
6Wired
controller YR-E16
Indoor unit operating
and group control
(Max. 16 indoor units)
Standard for cassette,
convertible, duct and built-in
oor standing
7Wired
controller YR-E16A
Indoor unit operating
and group control
(Max. 16 indoor units)
Standard for cassette,
convertible, duct and built-in
oor standing
8
Compact
wired
controller
YR-F02
Indoor unit operating
and group control
(Max. 16 indoor units)
Optional for cassette,
convertible, and duct
9Small central
controller YCZ-G001
Indoor unit group
control
(Max. 32 indoor units)
All indoor units
10
Touch screen
central
controller
YCZ-A003
Indoor unit group
control and monitoring
(Max. 128 indoor
units)
All indoor units

14
# Photo Name Model Function Application Comments
11 Touch screen
central controller YCZ-A004
Indoor unit group
control and monitoring
(Max. 256 indoor
units)
All indoor units
12
Touch screen
central controller
gateway
IGU05
Connection between
YCZ-A003, YCZ-A004
and outdoor unit
All indoor units
13
Central
controller with
monitor software
HCM-01
Indoor unit group
control and monitoring
(Max. 400 indoor
units)
All indoor units
14 BacNet/IP
converter HCM-03 BacNet/IP protocol converting All indoor units
15
Remote
monitoring
version 5 BMS
system
HCM-05
BACnet IP and
modbus, monitor and
control to the whole
MRV system, max 250
indoor units
All indoor units
16
Remote
monitoring
version 5 BMS
system
HCM-05A
BACnet IP and
modbus, monitor and
control to the whole
MRV system, max 500
indoor units
All indoor units
17 BacNet gateway IGU02 Protocol translator All indoor units
18 LonWorks
gateway IGU07 LonWorks protocol converting All indoor units
19 Modbus
gateway IGU06 Protocol adapter and data storage All indoor units
20 VP box
VP1-112A
VP1-180A
VP1-280A
Connection with 3
Pipe Outdoor Unit and
Indoor Unit in heat
recovery system.
MRVIII-RC
(heat recovery)

15
Outdoor Unit
Model AV08CMVUSA AV10CMVUSA
Combination / /
Power supply Ph/V/Hz 3Ph/208-230V/60Hz 3Ph/208-230V/60Hz
Cooling
Rated capacity kW 22.4 28
Rated capacity kBtu/h 76.4 95.5
Rated power input kW 5.81 7.55
Max. power input kW 12.5 14.5
EER 3.86 3.71
Rated current A 16.40 21.31
Max. current A 38.6 44.7
Heating
Rated capacity kW 25 31.5
Rated capacity kBtu/h 85.3 107.5
Rated power input kW 6.1 7.97
Max. power input kW 12.5 14.5
COP 4.10 3.95
Rated current A 17.21 22.49
Max. current A 38.6 44.7
Compressor
Brand MITSUBISH ELECTRIC MITSUBISH ELECTRIC
Model ANB52F ANB52F
Type DC INV. SCROLL DC INV. SCROLL
Compressor quantity 1 INV 1 INV
Capacity W 17200 17200
Power Input W 5250 5250
Rated current (RLA) A 18.5 18.5
Speed rps 60 60
Crankcase heater W 33 33
Refrigerant oil brand IDEMITSUKOSAN CO., LTD IDEMITSUKOSAN CO., LTD
Refrigerant oil type FV50S FV50S
Refrigerant oil charge ml 2300+1000 2300+1000
Outdoor fan
motor
Brand PANASONIC PANASONIC
Model DMSB18P80AS3 DMSB18P80AS3
Voltage 208-230 208-230
IP class IP23 IP23
Type DC DC
Insulation class B B
Safe class I I
Power input W 1000 1000
Output W 750 750
Rated current A 4.4 4.4
Capacitor μF / /
Speed rpm 825 825
Outdoor fan
Brand Haier Haier
Model / /
Material Plastic Plastic
Type Axial Axial
Diameter mm 642 642
Height mm 198 198
2. Outdoor Units
2.1 Specication

16
Model AV08CMVUSA AV10CMVUSA
Outdoor coil
Number of rows 2 2
Tube pitch (a)×row pitch (b) mm 19.05*22 19.05*22
Fin spacing mm 1.70 1.70
Fin type (code) Hydrophilic aluminum Hydrophilic aluminum
Fin coating type Optional Clear lacquer Clear lacquer
Salt spray test duration Hour 168 168
Tube outside dia.and type INNERGROOVE TUBE INNERGROOVE TUBE
mm Ф8 Ф8
Coil length×height mm (1340×660)*2 (1340×660)*2
Number of circuits 10 10
Cabinet
coating
Coating type Powder coating Powder coating
Salt spray test duration Hour 72 72
Sheet metal material Hot zinc plate Hot zinc plate
Sheet metal thickness mm 0.8 0.8
Control panel enclosure IP class Standard IP24 IP24
Outdoor air ow m3/h 11100 11100
External static pressure Pa 50 50
Outdoor sound level (sound pressure level) (H) dB (A) 57 57
Outdoor sound level (sound power level ) (H) dB (A) 73 73
Outdoor unit
Dimension (W*H*D) mm 990×1808×750 990×1808×750
Packing (W*H*D) mm 1090×1990×860 1090×1990×860
Net weight kg 240 240
Gross weight kg 268 268
Refrigerant Type R410A R410A
Charged volume*3 kg 10 10
Throttle type EXV EXV
Design pressure MPa 4.15 4.15
Refrigerant
piping
Liquid pipe mm Ф9.52 Ф9.52
Gas pipe mm Ф19.05 Ф22.2
High pressure pipe mm Ф19.05 Ф19.05
Oil pipe mm 9.52 9.52
Total pipe lenth m 300 300
Max. pipe length
(Equivalent/ Actual) m175/150 175/150
Max. Diff. indoor/outdoor unit m50 (Outdoor higher than indoor)
40 (Indoor higher than outdoor)
Max. Diff. indoor/indoor unit m 15 15
Connectable indoor unit ratio % 50~130% 50~130%
Maximum indoor units Piece 13 16
Connection
wiring
Power wiring mm210 16
Signal wiring mm2Shield wire: (0.75-2)*2 Shield wire: (0.75-2)*2
Operation range °C
Cooling: -5°C-43DB (°C)
Cooling&Heating: -8°C-18WB (°C)
Heating: -15°C-15.5WB (°C)
Norminal condition:
Indoor temperature (cooling): 27DB (°C)/19WB (°C), indoor temperature (heating): 20DB (°C)/14.5WB (°C).
Outdoor temperature (cooling): 35DB (°C)/24WB (°C), outdoor temperature(heating): 7DB (°C)/6WB (°C).
The data is measured with 7.5m equivalent pipe and 0 m 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.