Gree Heat Pump Water Heater User manual

Heat Pump Water Heater（
（（
（Northern Europe）
））
）
Service Manual
GREE ELECTRICAPPLIANCES INC. OF ZHUHAI

CONTENTS
RODUCT INTRODUCTION .....................................................................................2
1 MODELS LIST............................................................................................................................. 2
2 NOMENCLATURE......................................................................................................................2
3 FUNCTION ..................................................................................................................................3
4 PRODUCT DATA.........................................................................................................................4
4.1 Product Data at Rated Condition........................................................................................ 4
4.2 Ambient Temp Range.........................................................................................................4
4.3 Electrical Data....................................................................................................................5
5 PIPING DIAGRAM......................................................................................................................6
UNITS CONTROL......................................................................................................8
1 OPERATION FLOWCHART.......................................................................................................8
2 MAIN LOGIC............................................................................................................................. 10
2.1 Heating Mode...................................................................................................................10
2.2 Defrosting Mode..............................................................................................................10
3 WIRED CONTROLLER ............................................................................................................ 11
3.1 Dimension........................................................................................................................ 11
3.2 Function ........................................................................................................................... 11
3.3 Installation........................................................................................................................14
4 CONTROLWIRING DESIGN...................................................................................................16
UNITS INSTALLATION..........................................................................................18
1 UNITS INSTALL........................................................................................................................18
1.1 Installation Positions........................................................................................................18
1.2 Matters need Attention.....................................................................................................18
1.3 Dimension Date................................................................................................................18
1.4 Installation Clearance Date..............................................................................................19
2 ELECTRIC WIRING WORK.....................................................................................................21
2.1 Wiring Principle............................................................................................................... 21
2.2 Electric Wiring Design.....................................................................................................21
2.3 Specification of Power Supply Wire and Air Switch.......................................................22
UNITS MAINTENANCE..........................................................................................24
1 ERROR CODE LIST.................................................................................................................. 24
2 FLOW CHART OF TROUBLESHOOTING ............................................................................. 25
3 DISASSEMBLYAND ASSEMBLY PROCEDURE OF MAIN PARTS.................................... 31
4 EXPLODED VIEWS AND PART LIST.....................................................................................37
4.1 Single Fan ........................................................................................................................37
4.2 Double Fan.......................................................................................................................38

GREE COMMERCIALAIR CONDITIONERS HEAT PUMP WATER HEATER (NORTHERN EUROPE)
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PRODUCT

HEAT PUMP WATER HEATER (NORTHERN EUROPE) PRODUCT
2
RODUCT INTRODUCTION
1 MODELS LIST
Model
Refrigerant Model Name
Nominal
Capacity
(kW)
Power Supply
(V,Ph,Hz)
Appearance
KFRS-9/Na-M 9.0
R410A
GRS-S16/Na-M(O) 16
380～415V
3Ph 50Hz
Note:1Ton =12000Btu/h = 3.517kW
2 NOMENCLATURE
K
F
RS
-
9
/
Na
-
M
1
2
3 4
5 6

HEAT PUMP WATER HEATER (NORTHERN EUROPE) PRODUCT
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NO. Description Options
1 Air Source
2 Split Type F= Split Type, Default= Integral Type
3 Heat Pump Water Heater
4 Heating Capacity 9KW
6 Refrigerant Na=R410A, Default=R22
7 Voltage M=380～415V 3Ph 50Hz
G
RS
-
S
16
/
Na
-
M
(0)
1 2 3
4 5 6 7
NO. Description Options
1 GREE
2 Heat Pump Water Heater
3 Static S= Static ,C =Circulating
4 Heating Capacity 16KW
5 Refrigerant Na=R410A, Default=R22
6 Voltage M=380～415V 3Ph 50Hz
7 Outdoor Unit O= Outdoor Unit ,I=Indoor Unit
3 FUNCTION
Function Description
Heating
Memory restart
High efficiency and energy saving
Environmentally friendly
Healthy and comfortable
Friendly man-machine interface
Easy installation
Low noise design
Safety and reliability thanks to advance compressor balance control

HEAT PUMP WATER HEATER (NORTHERN EUROPE) PRODUCT
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4 PRODUCT DATA
4.1 Product Data at Rated Condition
Technical parameters of host unit
Models KFRS-9/Na-M GRS-S16/Na-M(O)
kW 9 16
Btu/h 30708 54592
Nominal Capacity Heating
RT 2.56 4.55
Power Consumption Heating kW 3 5.5
Power Supply 380~415V,3Ph,50Hz
Safeties High/Low pressure switch, compressor thermal
protection, over current protection, lose of
phase/anti-phase protection, antifreeze protection,
Type R410A
Refrigerant Charge kg 3.3 4.5
Type scroll
Compressor NO. 1 1
Heat Exchanger Aluminum fin-copper tube
Liquid mm 1/2" 1/2"
Evaporator
Connection
Pipe
Gas
mm
3/4" 3/4"
Height mm 840/985 1250/1405
Width mm 1018/1110 1032/1110
Unit/
Packing
Dimension Depth mm 412/450 412/450
Net / Gross Weights
kg 90/100 132/145
NOTE：Testing condition of heating :Setting temp of outlet water: 45℃, outdoor ambient temp : DB7℃/WB6
℃.
4.2 Ambient Temp Range
Ambient temp range of unit during operation: -15~28℃.

HEAT PUMP WATER HEATER (NORTHERN EUROPE) PRODUCT
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4.3 Electrical Data
Fan Motor
Compressor
Outdoor
Total
Model
Rated
Power
Supply NO.
LRA
each
（A）
MRC
each
（A）
NO. MRC
（A）
MRC
（A）
NRC
（A）
KFRS-9/Na-M
1 48 10.8 1 1.5 12.3 8.2
GRS-S16/Na-M(O)
380~415V
3Ph 50Hz 1 74 15.0 2 2 19.5 12.0
Notes:
LRA: Locked rotor amps (A)
MRC: Maximum running current (A)
NRC: Nominal running current (A)

HEAT PUMP WATER HEATER (NORTHERN EUROPE) PRODUCT
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5 PIPING DIAGRAM
Hot water
Citywater
Thermal expansionvalve
Liquid-gasseparator
Low-pressure
switch
Compressor
High-pressure
switch
Watertank
Four-wayvalve
Aluminumfin-copper tubecoil
Highpressure
tank

GREE COMMERCIALAIR CONDITIONERS HEAT PUMP WATER HEATER (NORTHERN EUROPE
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CONTROL

GREE COMMERCIALAIR CONDITIONERS HEAT PUMP WATER HEATER (NORTHERN EUROPE)
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UNITS CONTROL
1 OPERATION FLOWCHART

HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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2 MAIN LOGIC
2.1 Heating Mode
When press ON button, if the temperature of water tank meets the heating running requirements,
it starts the fans of outdoor unit. Then the compressor will run after 15s.
If the temperature of water tank is over the set temperature , the unit will stop, and turn off all
loads .The fans of outdoor unit will stop after 15s.
Turn on
Fan 1
Compressor
Turn off
Four-way Valve
15S
Fan 2
When it is turned off
15S
5S
30S
When it is turned off
2.2 Defrosting Mode
The condition of start defrosting mode:
Under heating mode, if the accumulative running time of compressor is over the set interval time
of defrosting（default 45min），and the defrosting temperature is lower than the set starting
temperature(default -4℃) ,the unit will start running defrosting mode, and the 4-way valve will shut

HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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off and the outdoor fan will stop after 2s.
The condition of quit defrosting mode:
Under defrosting mode, if the continual defrosting time is over the set continual time of defrosting
（default 8min），and the defrosting temperature is over the set stopping temperature(default 20℃) ,the
unit will restart running heating mode, and the 4-way valve will turn on and the outdoor fan will run.
3 WIRED CONTROLLER
3.1 Dimension
3.2 Function
3.2.1 Operation View

HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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OFF
QUIT
ON
CHECK
MODE
NO. Name Function description
1
MODE button This button is available only on heating unit.
2
CHECK button
Press it once under normal state to enter check mode,
under check mode, press this button when “17” is
displayed can change the value of “17”. Under parameter
set mode, press this once can switch the adjusting objection
between parameter and value, press this button for long
(about 5s) to save and quit this parameter setting.
3
Increasing button To increase present set value or change set/check object.
4
Decreasing button To decrease present set value or change set/check object.
5
QUIT button
Under Set and Check mode, press it once to quit this mode.
Under parameter set mode, this set value would not be
saved. Press this button for long (about 5s) to set sound,
and make sound switches between always on and always
off.
6
ON button To turn on the unit; press it once to quit compel operation
when the unit is under compel operation.
7
OFF button To turn off the unit; press it once to quit compel operation
when the unit is under compel operation.
8
LCD display Display information of the unit.

HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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Note：
(1) Turn On, Off Auxiliary Heater: It is only available for heat pump unit. Press CHECK once to enter
Check mode. Press ▲and ▼to change check object, press CHECK again till the present check
object becomes “17”, value “17” switches between 01/03 (auxiliary heater on) and 00/02 (auxiliary
heater off). That is 00 Off —>01 On —>00 Off, or 02 Off —>03 On —>02 Off.
(2) Check Parameter: After electrify for 20s, press QUIT then ▲to enter parameter checking mode.
Under this mode, Auxiliary display area shows the checking object, Main display area displays the
value for the checking object. Press ▲and ▼to change the checking object. Press QUIT to quit
from the check mode.
3.2.2 Display View
NO. Name Function description
1 Running mode display : heating mode
2 Temp display It shows temperature value displays at main display area.
3 Auxiliary display area It contains 2 numbers and a comma, for showing temperature and
number of parameter at main display area. It only displays when under
Check mode and Parameter checking mode.
4 Main display area
It contains a minus, 2 numbers and 1 temperature unit, for displaying
value of temperature and parameter (temperature or time value) and error
code. When temperature value is displayed, it shows value in algorism
and temperature unit; when time is displayed, it shows algorism value but
no temperature unit (default unit is min); when it is code, it displays
specific error (refer to Malfunction Error List) but no temperature unit.

HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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Individual temperature or parameter may exceed 99, then adopt AX for
100～109, bX for 110～119, CX for 120～129, dX for 130～139, EX for
140～149, FX for 150～159, and X stands for a number between 0～9.
Under normal state, it shows temperature for back water.
5 Parameter display It means the value shown at present main display area is parameter. It
shows only under Parameter Check mode.
6 Defrost display It displays when defrosting, otherwise it doesn’t displays.
7 System ID It displays when system or compressor orders, for showing which system
is defrosting.
8 Testing display For testing, it displays under compel operation.
9 Error code display It shows the error code displayed on Main Display Area. It displays when
there is error at system or communication.
Caution:
When unit is off, it displays only temperature of water tank. When unit is on, under normal state, if
there is no error, it displays temperature of water tank, if there is error, it displays error code; when
there is no operation after 60s of pressing the button, it quit back to normal state display automatically.
Auto antifreeze operation display (only for heat pump unit)
When auto antifreeze function is started and relevant conditions are satisfied, unit begins auto
antifreeze operation. At this time, LCD main display area displays code d2 (if there is error it displays
error code).
3.3 Installation
First select an installation position. According to the size of the communication line of the wire
controller, leave a recess or a embedded wire hole to bury the communication line.
If the communication line between the wire controller (85×85×20) and the indoor unit is
surface-mounted, use 1# PVC pipe and make matching recess in the wall (refer to Figure 6); If
concealed installation is adopted, 1# PVC pipe can be used (Refer to Figure 7).
No matter if surface mounting or concealed mounting is selected, it is required to drill 2 holes (in
the same level) which distance shall be the same as the distance (60mm) of installation holes in the
bottom plate of the wire controller. Then insert a wood plug into each hole. Fix the bottom plate of the
wire controller to the wall by using the two holes. Plug the communication line onto the control panel.
Lastly install the panel of the wire controller.

HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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Caution:
During the installation of the bottom plate of the wire controller, pay attention to the direction of
the bottom plate. The plate’s side with two notches must be at the lower position, and otherwise the
panel of the wire controller cannot be correctly installed.
PVC pi pe
Fig6 ： Surface Mounting of Cable Fig7 ： Concealed mounting of Cable
1 32 4
Fig 8 Schematic Diagram of Installation
No. Name
1 Wall Surface
2 Bottom Plate of Wire Controller
3 Screw M4X10
4 Panel of Wire Controller

HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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Caution:
The communication distance between the main board and the wire controller can be as far as 20m
(The standard distance is 8m).The wire controller shall not be installed in a place where there is water
drop or large amount of water vapor.
4 CONTROL WIRING DESIGN
WIRED CONTROLLER
Manual Unit Controller Outdoor Unit Controller
CN1 CN2
J1 X17
twisted-pair twisted-pair
The controllers of the unit include manual controller, wired controller and outdoor unit controller.
The wired controller communications with manual controller and outdoor unit controller in RS485.
The wired controller connects manual controller with 4-line twisted-pair. Similarly, wired controller
connects outdoor unit controller with 4-line twisted-pair.

HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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INSTALLATION

HEAT PUMP WATER HEATER (NORTHERN EUROPE) INSTALLATION
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UNITS INSTALLATION
1 UNITS INSTALL
1.1 Installation Positions
For outdoor unit:
The installation is frost-free.
The space around the unit is adequate for servicing.
The space around the unit allows for sufficient air circulation.
There is no danger of fire due to leakage of flammable gas.
All piping lengths and distances have been taken into consideration.
1.2 Matters need Attention
At delivery, the unit should be checked and any damage should be reported immediately to the
carrier claims agent.
1.3 Dimension Date
KFRS-9/Na-M
950 340
840
378
412572