MegaLife ARV Series User manual

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
Service Manual
ARV Outdoor Unit
ARV 6 All DC Inverter T1
ARV-H250/SR1MV
ARV-H280/SR1MV
ARV-H330/SR1MV
ARV-H400/SR1MV
ARV-H450/SR1MV
ARV-H500/SR1MV
ARV-H560/SR1MV
ARV-H610/SR1MV

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
2018.8
CONTENT
Part1 Refrigerant Circuit.........................................................................4
1. Cooling Operation ..................................................................................................... 6
2. Heating Operation ..................................................................................................... 8
3. Component introduce ...............................................................................................11
Part2 Installation ...................................................................................13
1. Preface of installation .............................................................................................. 14
2. Installation of Outdoor Unit ...................................................................................... 15
3. Pipes Laying............................................................................................................ 21
4. Welding ................................................................................................................... 30
5. Gas Tightness Test.................................................................................................. 33
6. Vacuum Drying ........................................................................................................ 38
7. Insulation ................................................................................................................. 42
8. Additional refrigerant................................................................................................ 45
9. Electrical Wiring....................................................................................................... 47

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
Part3 Commissioning ...........................................................................50
1. Preparatory work ..................................................................................................... 51
2. Master unit setting ................................................................................................... 54
3. Commissioning........................................................................................................ 54
4. Parameter Setting (Main PCB) ................................................................................ 63
5. Commissioning Based on Monitoring Software ....................................................... 72
6. IDU Parameter setting by Controller.......................................................................109
35 ...............................................................................................................................109
Part4 Special Control..........................................................................119
1. Special Control.......................................................................................................120
Part5 Trouble shooting .......................................................................132
1. IDU Error code table (No.16)..................................................................................134
2. ODU Error code table (No.65) ................................................................................136
3. Indoor unit error code display .................................................................................146
4. Outdoor unit error code display ..............................................................................148
5. Outdoor unit trouble shooting .................................................................................155
6. Appendix.................................................................................................................165

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
Part1 Refrigerant Circuit

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
1. Cooling Operation .....................................Error! Bookmark not defined.
2. Heating Operation......................................Error! Bookmark not defined.
3. Component introduce ...............................Error! Bookmark not defined.

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
1. Cooling Operation
ARV-H250/SR1MV, ARV-H280/SR1MV, ARV-H330/SR1MV
ARV-H400/SR1MV, ARV-H450/SR1MV
NO.
Component
(Sensors)
Full name
1
Tho2
Outlet temperature of PMV3
2
Tdef2
Outlet temperature of sub-cooler
3
Tao
Environment temperature
4
Ts
Gas-liquid separator outlet/Suction temperature
5
Tho1
Condenser outlet temperature
6
Tdef1
Defrost temperature
7
Td1
Discharge of compressor 1#
8
Td3
Oil temperature
9
Td4
Liquid piping temperature of ODU
Refrigerant
cooling
liquid
stop valve
4-Way Valve
LGS
Condensor
DC Inverter
HPSensor
OS
gas stop valve
PMV1
service valve
LP Sensor
storage tank
Cooling G as forhigh tem p.& high pressure
Liquid for high tem p.& high pressure
Low tem p.& low pressure
S ub-cooling/E V I
HP Switch
plate heater
Filter
Filter
SV1
PMV 3
SV3
SV5
Tdef2
Tho2
Td4
Tao
Ts
Tho1
Tdef1
Td1
Td3

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
ARV-H500/SR1MV, ARV-H560/SR1MV, ARV-H610/SR1MV
NO.
Component
(Sensors)
Full name
1
Tho2
Outlet temperature of PMV3
2
Tdef2
Outlet temperature of sub-cooler
3
Tao
Environment temperature
4
Ts
Gas-liquid separator outlet/Suction temperature
Refrigerant cooling
liquid
stop valve
4-Way Valve
LGS
Condensor
DC Inverter
HP Sensor
OS
gas stop valve
EXV1
service valve
LP Sensor
storage tank
G as forhigh tem p.& high pressure
Liquid forhigh tem p.& high pressure
Low tem p.& low pressure
S ub-cooling
HP Switch
plate heater
PMV 3
Filter
Filter SV1
1#2#EXV2
Cooling
SV3SV6SV5
Td1 Td2
Td3 Ts
Tao
Tdef1 Tho1
Tho2
Tdef2
Td4

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
5
Tho1
Condenser outlet temperature
6
Tdef1
Defrost temperature
7
Td1
Discharge of compressor 1#
8
Td3
Oil temperature
9
Td4
Liquid piping temperature of ODU
10
Td2
Discharge of compressor 2#
2. Heating Operation
ARV-H250/SR1MV, ARV-H280/SR1MV, ARV-H330/SR1MVARV-H400/SR1MV,
ARV-H450/SR1MV
NO.
Component
(Sensors)
Full name
Refrigerant
cooling
liquid stop valve
4-Way Valve
LGS
Condensor
DC Inverter
HP Sensor
OS
gas stop valve
PMV 1
service valve
LP Sensor
storage tank
Heating G a s fo rh ig h te m p .& hig h p re ssu re
Liquid for high tem p.& high pressure
Low tem p.& low pressure
S ub-cooling /E V I
HPSwitch
plate heater
PMV 3
Filter
Filter
SV1
SV3
SV5
Tdef2
Tho2
Td4
Tao
Ts
Tho1
Tdef1
Td1
Td3

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
1
Tho2
Outlet temperature of PMV3
2
Tdef2
Outlet temperature of sub-cooler
3
Tao
Environment temperature
4
Ts
Gas-liquid separator outlet/Suction temperature
5
Tho1
Condenser outlet temperature
6
Tdef1
Defrost temperature
7
Td1
Discharge of compressor 1#
8
Td3
Oil temperature
9
Td4
Liquid piping temperature of ODU
ARV-H500/SR1MV, ARV-H560/SR1MV, ARV-H610/SR1MV
Refrigerant cooling
liquid stop valve
4-Way Valve
LGS
Condensor
DC Inverter
HP Sensor
OS
gas stop valve
PMV1
service valve
LP Sensor
storage tank
Heating G as for high tem p.& high pressure
Liquid forhigh tem p.& high pressure
Low tem p.& low pressure
S ub-cooling
HP Switch
plate heater
PMV3
Filter
Filter SV1
SV3
1#2#PMV2
SV6SV5
Td1 Td2
Td3 Ts
Tao
Tdef1 Tho1
Tho2
Tdef2
Td4

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
NO.
Component
(Sensors)
Full name
1
Tho2
Outlet temperature of PMV3
2
Tdef2
Outlet temperature of sub-cooler
3
Tao
Environment temperature
4
Ts
Gas-liquid separator outlet/Suction temperature
5
Tho1
Condenser outlet temperature
6
Tdef1
Defrost temperature
7
Td1
Discharge of compressor 1#
8
Td3
Oil temperature
9
Td4
Liquid piping temperature of ODU
10
Td2
Discharge of compressor 2#

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ·
11
3. Component introduce
Component name
Main function
DC Inverter
DC inverter Compressor :
Compressor work frequency range is 20~120 Hz.
HP Switch
High Pressure Switch:
When refrigerant high pressure value over the target pressure
value , switch valve is disconnected, signal is interrupted ,then stop
running to protect the refrigerant system
OS
Oil Separator:
To separate refrigeration oil and high pressure refrigerant
Filter
Filter impurities to avoid blockage of electronic expansion valve
SV1
Unload Valve
SV5/ SV6
Enhance vapor injection Valve
HP sensor
High Pressure Sensor:
Detecting refrigerant system high pressure value
4-way valve
Change the refrigerant flow direction to achieve cooling or heating
mode
Plate Heater
Sub-cooler:
5.5℃sub-cooling by plate heat exchanger make sure liquid
refrigerant flow into evaporator Instead of gas-liquid refrigerant flow
into evaporator , reduce Airflow noise and temperature fluctuation
and support long piping length
SV3
Sub-cooling Valve
Refrigerant Cooling
Well cooled by refrigerant, ensuring the long life time of the PCB

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ·
12
PMV
EXV: throttling and reducing refrigerant pressure
LGS
Liquid-gas separator:
To separate gas refrigerant and liquid refrigerant
LP Sensor
Low Pressure Sensor:
Detecting refrigerant system low pressure value

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
13
Part2 Installation
1. Preface of installation ...............................Error! Bookmark not defined.
2. Installation of Outdoor Unit ......................Error! Bookmark not defined.
3. Pipes Laying...............................................Error! Bookmark not defined.
4. Welding .......................................................Error! Bookmark not defined.
5. Gas Tightness Test ....................................Error! Bookmark not defined.
6. Vacuum Drying...........................................Error! Bookmark not defined.
7. Insulation ....................................................Error! Bookmark not defined.
8. Additional refrigerant ................................Error! Bookmark not defined.
9. Electrical Wiring.........................................Error! Bookmark not defined.

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
14
1. Preface of installation
Caution
The proper design and installation is a critical element of ARV system, installation of
piping and electrical works must be carried out by suitably qualified, certified
professionals and in accordance with all applicable legislation.
In this service manual, the term “applicable legislation” refers to all national, local and
other laws, standard, codes, rules, regulations and other legislation that apply in a given
situation.
Confirm project Check Drawing
Installoutdoorunit Installindoorunit
Installdrainage pipe
Installducts
Pipeslaying
AirTightnessTest
Insulation
Elec tric a l wiring
Commissioning
C hec k a nd ha nd over
Charging
additionalrefrigerant
Vacuum drying
Flushing
Welding

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
15
2. Installation of Outdoor Unit
2.1Installation Location and Foundation
1. Ensure that the outdoor unit is installed in a dry, well-ventilated place.
2. Ensure that the noise and exhaust ventilation of the outdoor unit do not affect the
neighbors of the property owner or any surrounding ventilation.
3. Ensure that the outdoor unit is installed in a cool place without direct sunlight exposure
or direct radiation of a high-temp heat source.
4. The outdoor unit should be installed as close as possible to the indoor unit.
5. The installation location must be far from waste and oil mist.
6. The foundation should be strong enough to support the outdoor unit.

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
16
2.2 Pre tools
Tape measure
Spanner
Electric hammer
Screw driver
Nut gasket
Level meter
2.3 Maintenance and Ventilation Space
2.3.1 Ensure necessary installation and maintenance space.

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
17
2.3.2 If there are two rows of outdoor units, we suggest face to face installation for easy
maintenance, and avoid air short circuit.
2.3.3 If miscellaneous articles are piled around the outdoor unit, it should be at least
1000mm higher than the top of outdoor unit. Otherwise, a mechanical discharge device
must be added to improve the ventilation.
Front FrontFront
D
C
B
A
A＞300 mm B＞ 45 ℃ C＞ 1000 mm DGuide vane

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
18
2.4 Installation of Outdoor Unit
2.4.1 Tighten outdoor unit on mounting support with M10 bolt and nut, and keep it
horizontal. The bolt should have a proper length of 20mm more than base surface.
2.4.2 If the system has more than two outdoor units. The largest capacity unit should be
set as the master unit, while the others should be set as slave units, as shown in the
following example.
Outdoorunit
Concrete
basement
Solid ground /
roofing
Rub b e rsho c kin g
p ro o fm a t
Φ10 Expension bolt

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
19
2.4.3 The installation space for a fixed bolt, please refer to the following drawing.
2.4.4 The foundation can be made of channel steel or concrete. Reserve the space for
discharging the condensate water from outdoor units.
2.4.5 Install drainage channels to ensure condensed water flow out smoothly.
Masterunit
16HP Slave unit
12HP
2# 3# 4# 5#
FirstBra nc h Pip e
Liquid Side
GasSide
1#
8H P,10H P,12H P 14H P,16H P,18H P,20H P,22H P

MegaLife ARV OUTDOOR UNIT –ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
20
2.4.6 Don’t use four-square base to support outdoor unit.
2.4.7 Rubber anti-vibration pads are necessary to avoid vibration.
2.4.8 If the outdoor unit need side air flow outlet by a duct, it is necessary to remove out
the wind grille.
Airflow
Airexhausted duct
If duct isneeded,please
remove the wind grille before
doing the duct work
Channel Steel
Concrete
Space for discharging
the condensate water