enertik BC-F20HWR2-200L User manual

All in one type heat pump water heater
Installation and user manual

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Content
1. Safety information .................................................................................. 2
2. Preparations of installation .................................................................... 3
3. Installations ............................................................................................ 6
4. Trial-running .......................................................................................... 11
5. Unit parameters ................................................................................... 12
6. Operation .............................................................................................. 13
7. Troubleshooting ................................................................................... 15
8. Maintenance ......................................................................................... 17
9. Wi-Fi Function ...................................................................................... 18
9.1 Software installation .............................................................. 18
9.2 Software registration and configuration ................................ 18
9.2.3 Wi-Fi module configuration steps ...................................... 21
9.2.5 Device Removal ................................................................ 27

-- 1 --
If you cannot confirm that your house power supply is earthed well,please do not install the unit before carefully check it.
Please have a qualified person to check the reliable earthing connection and install the unit.
Examples of a qualified person include:Licensed plumbers,Authorized electric company personnel,and Authorized service
personnel.
Part names:
WARNING
The heat pump unit is required reliable earthing connection before usage;otherwise
it might cause death or injury.

2
WARNING
CAUTION
1. Safety information
Please carefully read thoroughly all of the instructions before installing or operating the unit.
Following safety symbols are very important,please carefully read and always obey all safety symbols.
CAUTION
It maybe cause that people is injured if not obey the instructions.
WARNING
It maybe cause that people is seriously injured or killed if not obey the
instructions.
DANGER
It maybe cause that people is seriously injured or killed immediately if not
obey the instructions.
The unit must be earthed effectively and reliably.
A residual current operated circuit-breaker R(CCB)must be installed adjacent to the power supply.
Do not remove,cover or deface any permanent instructions,labels or the data labels from either the outside of the unit
or inside of unit panels.
Only the qualified person can perform the installation of this unit in accordance with local national regulations and this
installation manual.Improper installation may result in water leakage,electric shock or fire.
Only the qualified person can relocate,repair and maintain the unit.Improper installation and repairing may result in
water leakage,electric shock or fire.
Electric connection work should obey the instructions of local power company,local electric utility and this manual.
Never use the wire and fuse with wrong rated current,otherwise unit may breakdown and cause fire furthermore. Do
not insert fingers,rods or other objects into the air inlet or outlet.When the fan is rotating at high speed,it will cause
injury.
Never use a flammable spray such as hair spray,lacquer paint near the unit,because it may cause a fire.
The heat pump unit is not intended for use by persons (including children) with reduced physical,sensory or mental
capabilities,or lack of experience and knowledge,unless they have been given supervision or instruction concerning
use of the unit by a person responsible for their safety.Children should be supervised to ensure that they do not play
with the unit.
Once the power supply cord is damaged,it must be replaced by service agent or the manufacturer or a similarly
qualified person.
Do not dispose this unit as unsorted municipal waste.Collection of such waste separately for special treatment is
necessary.
Do not dispose of electrical appliances as unsorted municipal waste, use separate collection
facilities. Please contact local government for information regarding the collection systems
available.
If electrical appliances are disposed of the landfills or dumps,hazardous substances can leak into
the groundwater and get into the food chain,damaging your health and well-being.
The ground wire’s pole of socket must be grounded well,make sure that power supply socket and plug are enough
dry and connected well.
To check the power supply socket and plug are qualified -
Step 1:Turn on the power supply.
Step 2:Keep the unit running for a half hour.
Step 3:Turn off the power supply and plug out.
Step 4:Check whether the socket and plug is hot or not.

3
Very hot water.
Burns or injury may occur.
CAUTIONS
Before cleaning,be sure to stop the operation and turn the breaker off or pull out the power supply plug.Otherwise,
an electric shock and injury may be caused.
Produced hot water temperature can reach over 50℃. It can cause severe burns instantly or death form scalds.
Children,disabled and elderly persons are at highest risk of being scalded.Feel water is necessary before bathing or
showering.So,water temperature limiting valves are recommended.
Do not operate the unit with a wet hand;otherwise,an electric shock may be caused.
The installation height of power supply should be over 1.8m,if there is any water spattered,separate the power supply
from water.
It is normal if some water drops from the hole of PTR valve during operation.But if there is a great amount of water,
call the service agent for instruction.
After a long term use,check the unit base and fittings.If damaged,the unit may sink and result in injury.
Arrange the drain pipe to ensure smooth draining. Improper drainage work may cause wetting of the building,
furniture,etc.
Do not touch the inner parts of the controller.Do not remove the front panel.Some parts inside are dangerous to
touch,otherwise the unit malfunction may be caused.
Do not turn off the power supply.System will stop or restart heating automatically during the standby mode.A
continuous power supply for the unit is necessary,except service and maintenance.
If the unit has not been used for a long period of time 2(weeks or more),hydrogen gas will be produced in the water
piping system.
Hydrogen gas is extremely flammable.To reduce the risk of injury under these conditions,it is recommended that
open the hot water tap for several minutes at the kitchen sink before using any electrical appliance connected to the
hot water system.When hydrogen is present,there will probably be an unusual sound such as air escaping through
the pipe as the water begins to flow.There should be no smoking or open flame near the tap at the time it is open.
2. Preparations of installation
2.1 Transport
In order to avoid scratch or deformation of the unit surface,please use guard boards to contacting surface.
No contact of fingers and other things with the vanes.
Do not incline the unit more than 45° to move.When install the unit,please keep the unit vertical.
＞45°
Gradient limit should be more than 45°
Because the unit is very heavy,it needs two or more persons to carry the unit,and otherwise,it might cause
injury and damage of the unit.
2.2 Packing list
Item
Quantity
Heat pump water heater
1
Installation &user manual
1
Relief valve(0.8MPa)
1

4
CAUTION
WARNING
2.3 Installation site requirements
Enough space for the unit installation and maintenance should be preserved.
The surrounding of air inlet and outlet should be free from obstacles and strong wind.
The base surface should be flat,surface should be inclined no more than 2° and able to bear the weight of the unit
and suitable for installing the unit without increasing noise or vibration.
The operation noise and air flow expelled shall not affect neighbors.
No flammable gas is leaked nearby.
It is convenient for piping and wiring.
If it is installed in indoor space,it might cause indoor temperature decreased or noise.Please take preventive
measures for this.
If the unit has to be installed on a metal part of the building,make sure that the reliable electric insulation which
should meet the relevant local electric standard.
The ambient air temperature must also be considered when installing this unit,in heat pump mode the ambient air
temperature must be above 7-℃ and below 43℃. If the ambient air temperature falls outside these upper and lower
limits,the electrical elements will be activated to meet the hot water demand and the heat pump does not operate.
The unit should be located in an area not subject to freezing temperatures.The unit located in unconditioned space
(garages,basements,etc.)may require the water piping condensate piping,and drain piping to be insulated to shelter
against freezing.
When installing the unit in the following places,it may lead to the malfunction of the unit:(If it is inevitable,please
consult with the unit supplier.)
The place contains mineral oils,for example,lubricant of cutting unit.
Seaside where the air contains salt.
Hot spring area where there are some corrosive gases like sulfide gas.
Factories where the high voltage power fluctuates seriously.
Inside a car or cabin.
The place with direct sunlight and other heat supplies.If it is not avoid,please install a covering or take other
measurement.
Place where is contained by oil permeates like kitchen.
Strong electromagnetic wave surrounding.
The place filling with danger or flammable gases or materials.
The place filling with acid or alkali gases.
The unit must be securely installed;otherwise some noise and shaking may be produced.
Confirm that there is no any obstacle around the unit.
If there is strong wind like seashore,please fix the unit in the place where is protected from the wind.
2.4 Maintenance space requirements

5
F L ON OF
SET TIMER
MODE
ON/OFF
LOCK
H
If the unit is installed in an enclosed space:
The heat pump unit must be placed in a space which is more than 15m³ ,and must have unrestricted air flow.For
example,the space of the installed unit is one room with 2.5m height ceiling and with 3m length by 2m width.
2.5 Unit dimension
D
Parameter Model
BC-F20HWR2-200L
BC-F25HWR2-250L
BC-F25HWR2-300L
Diameter D(mm)
570
640
640
High H(mm)
1802
1802
2020
≥800mm
≥600mm
≥600mm

6
CAUTION
WARNING
3. Installations
The circulating air flow of every unit should be more than 450m³/h.Please make sure that there is enough installation
space.
3.1 Water system piping diagram
Notes:
(1) The PTR valve is only
available for some models.
(2) The temperature limiting valve
is required on the hot water
usage terminal.
(3) The relief valve as
assess must be
connected.Drainage pipe
connected with the relief
valve should be
connected with
atmosphere.
Barrel-drain
Water piping system as the above figure.When install the unit at a place where outside temperature below freezing
point,the insulation must be provided for all hydraulic components.
The handle of PTR valve should be pulled out once per half a year to confirm that there is no jam of the valve.At the
same time,please take care of hot water from the valve and burning.
The outlet drain pipe should be insulated well in order to prevent water which is kept inside the pipe from freezing in
cold conditions.
Handle
Outlet
drain
pipe
It will cause explosion and injury,if do not comply with the following instruction:
Do not dismantle the PTR valve.
Do not block off the outlet drain pipe.
The specifications of water inlet and outlet pipes as following:
Internal thread D(N15).
Pipes must be heat-insulated well.
Installation of the pipe of PTR valve’s thread is RC3/4" (external thread). When finish the installation, it must
be confirmed that the outlet drain pipe of the PTR valve is exposed in the air.
The relief valve is necessary.It can prevent the supplied water from flowing backwards.
Power supply
User
Water leaving
PTR valve (1)
Temp.limiting
valve (2)
Sewage outlet
Condensate
drainage
Relief valve (3)
Water entering
Tap water
Barrel-drain
Shut-off valve
Drainage pipe (3)

7
After water system piping work,turn on the cold water inlet valve and hot water outlet valve and start effusing the
tank.When water flow smoothly out from tap of water outlet,it means the tank is full.Please turn off all valves and
check pipeline to make sure there is without any leakage.
If the inlet water pressure is less than 0.15MPa,a pump should be installed at the water inlet pipe.
For the safety usage of water tank at the condition of water supply pressure higher than 0.65MPa,a reducing valve
should be installed at the water inlet pipe.
Condensate may be leaked from the unit if condensate drainage pipe is blocked or it operates in high humidity
environment,a drainage pan is recommended as shown as the following figure:
Unit
Drainage pan
3.2 Connection of duct
When the ducts of both air inlet and outlet,a+ b+ c+ d≤10m.
a
Air outlet
b
Air
inlet
When the duct only air inlet,b+ c≤10m.( fig1）
When the duct only air outlet,a+ d≤10m.( fig2）
Air inlet Air outlet
( fig1） ( fig2）
d
c
Air
outlet
FA
a
b
SET TIMER
MODE ON/OFF
LOCK
Air
inlet
c
d
SET TIMER
MODE ON/OFF
LOCK
SET TIMER
MODE ON/OFF
LOCK

8
WARNING
Condensate
drainage
The duct specifications:
Duct type
Round duct
Rectangle duct
Dimensions
Φ177mm
177mmx77mm
Pressure drop
Straight
≤2Pa/m
≤2Pa/m
Bent
≤2Pa/m
≤2Pa/m
Bent quantity
≤3
≤3
NOTES
When the air duct is connected, the unit capacity will be decreased because of the decreased air flow by the
resistance of the duct.
If the duct is connected,the duct total length should be not more than 10m,or the maximums static pressure should be
within 25Pa.By the way,the quantity of bending should be not more than 3.
When the unit with duct operates,condensate water will be generated around the out surface of the duct.So please
wrap the thermal insulated layer around the duct.
The unit should be installed in the indoor space,and it is not allow installing the unit at the rainy place.
Please avoid the water entering to the internal of the unit because the water will cause the component inside the unit
damage or physical danger.
If the unit is connected with duct which is reaching to outdoor,it is necessary to supply a reliable water-resistant
measure on the unit to prevent water dropping from outside to internal of the unit.
× √
3.3 Condensate water drainage
To smoothly drain the condensate water,please install the unit at a horizontal floor.At the same time,please ensure
the drainage joint is at the lowest level.Recommending the inclination angle of the unit to the ground should be no
more than 2°
≤2
SET TIMER
MODE ON /OF F
LOCK

9
CAUTION
WARNING
3.4 Electric connection
The power supply should be an independent circuit with rated voltage.
Power supply circuit should be earthed effectively. The wiring must be performed by professional technicians in
according with nation wiring regulations and the unit circuit diagram.
An all-pole disconnection device which has at least 3mm separation distance in all poles and a residual current device
(RCD)with the rating of above 10mA shall be incorporated in the fixed wiring according to the national rules. Set
the electric leakage protector according to the relevant electric technical standards of the state.
The power supply cord and signal cord shall be laid out neatly and properly without mutual interference or contacting
the connection pipes.
After wires connection,check it again and make sure the correctness before power on.
3.4.1 Electric wiring diagram
3.4.2 Specifications of power supply
Power supply
220-240V / 50Hz
Min.diameter of power supply cord
2.5mm2
Earth cord
2.5mm2
Manual switch capacity Fuse
40A 3/0A
Creepage Breaker
30mA,≤0.1Sec
Please choose the power supply cord according to the above table,and it should comply with local electric
standard.
The power supply cord model, recommended power supply cord is H05RN-F/H05RR-F.
The unit must be installed with a creepage breaker near the power supply and must be effectively earthed.

10
NOTES
3.5 Installation checking
3.5.1 Location checking
The flooring beneath the water heater must be able to support the weight of the unit when filled with water.
Located indoors (such as a basement or garage) and in a vertical position. Sheltered from the freezing
temperatures.
Provisions made to shelter the area from water damage.Metal drain pan installed and piped to an adequate
drain.
Sufficient space to service the water heater.
Sufficient air for the heat pump to function,the water heater must be located in a space which is more than
15m3,and must have unrestricted air flow.
For optimal efficiency and service ability,the following clearances should be maintained:800mm on the air inlet side ,
800mm on the air outlet side,600mm in the back,and 600mm in the front.
The unit cannot be placed into any type of closet or small enclosure.
The site location must be free from any corrosive elements in the atmosphere such as sulfur,fluorine and
chlorine.These elements are found in aerosol sprays,detergents,bleaches,cleaning solvents,air
fresheners, paint and varnish removes, refrigerants and many other commercial and household products.
In addition excessive dust and lint may affect the operation of the unit and require more frequent cleaning.
The ambient air temperature must be above -7℃ and below 43℃.If the ambient air temperature falls outside
these upper and lower limits the electrical elements will be activated to meet the hot water demand.
3.5.2 Checking of the water system piping
PTR valve (Temperature and pressure relief valve)properly installed with a discharge pipe run to an adequate
drain and sheltered from freezing.
All piping properly installed and free of leaks.
Unit completely filled with water.
Water temperature limit valve or mixer tap (Recommended)installed per manufacturer’s instructions.
3.5.3 Checking of condensate drain pipe
Must be located with access to an adequate drain or condensate pump.
Condensate drain lines installed and piped to an adequate drain or condensate pump.
3.5.4 Checking of the electrical connections
The water heater requires 220-240VAC for proper operation.
Wiring size and connections comply with all local applicable codes and the requirements of this manual.
Water heater and electrical supply are properly grounded.
Proper overload fuse or circuit breaker protection installed.
3.5.5 Post installation review
Understand how to use the controller to set the various parameters and functions.
Understand the importance of routine inspection/maintenance of the condensate drain pan and lines.This is to
help prevent any possible drain line blockage resulting in the condensate drain pan overflowing.
IMPORTANCE:Water coming from the plastic shroud is an indicator that both condensation drain lines may
be blocked.Immediate action is required.
To maintain optimal operation check,remove and clean the air filter.

11
Hot water outlet
Cold water inlet
Open the cold water inlet valve
and the water outlet valve.
Close the cold water inlet valve,and open the
hot water outlet valve and drainpipe.
Open
Close
Hot water outlet
Cold water inlet Open
Sewage outlet nut
Open
Open
CAUTION
4. Trial-running
4.1 Water perfusion before operation
If the unit is used for the first time or used again after emptying the water tank,please make sure that the tank is full of
water before turning on the power.
Method:please refer to the figure.
Water perfusion
Operation without water in water tank may result in the damage of the boost E-heater (electric heater).Due to such
damage,manufacturer will not be responsible for any damages caused by this issue.
After powered on,the display lights up.Users can operate the unit through the buttons under the display.
4.2 Water emptying before cleaning
If the unit needs cleaning,moving,etc,the water tank should be emptied.
Method:please refer to the figure.
Empty
4.3 Trial-running
Checking list before commisioning:
Correct installation of the system.
Correct connection of the water/air and wiring.
Condensate draining smoothly well insulation work for all hydraulic part.
Correct power supply.
No air in the water pipeline and all valves opened.
Effective electric leakage protector installation.
Sufficient inlet water pressure (Between 0.15MPa and 0.65Mpa).
=-0987654321;/”
When water flows out from the hot
water outlet,the tank is full.Turn
off the hot water outlet valve and
water perfusion is finished.
Close
Hot water outlet
Water out
After emptying
,please fix the drain nut.
Close
Sewage outlet nut

12
5. Unit parameters
Model:
BC-F20HWR2-200L
BC-F25HWR2-250L
BC-F25HWR2-300L
*Test Condition:Ambient Temperature: (DB/WB) 20°C / 15°C；Water Temperature from 15°C to 55°C
Rated Heating Capacity（kW）
1.80
2.42
2.42
Rated input power（kW）
0.47
0.62
0.62
COP
3.82
3.88
3.88
Hot Water Volume（L/h）
39.00
52.00
52.00
Operation Range（℃）
-7~43
Rated Outlet Water Temp.
（℃）
55
Max.Outlet Water Temp.（℃）
75
Max. Power Input（kW）
2.69
2.93
2.93
Max. Running Current（A）
12.20
13.40
13.40
Power Supply（V/Ph/Hz）
220-240V~/50Hz
Electric Heating（kw）
2
2
2
Water Connection
G1/2"(female)
G3/4”(female)
G3/4”(female)
Noise（dB(A)）
≤52
≤53
≤53
Refrigerant
R134a
Water Tank Volume（L）
200
250
300
Water Proof Level
IPX4
Net weight（kg）
96
123
141
Net Dimensions(L/W/H)（mm）
Φ570×1802
Φ640×1802
Φ640×2020

13
Icons
Name
SETTING
TIME
ELECTRIC HEATER
6. Operation
6.1 Controller panel explanation
6.2 Explanation of icons
6.3 Explanation of buttons
After the unit is powered on,the display screen will display all the icons for 3 seconds,and it will be display the regular
interface automatically.
Sign
Name
Sign
Name
ERROR sign
BATH sign
STANDBY TIMING key
CYCLIC VENTILATION sign
LOCK sign
ELECTRIC HEATER sign
DEFROSTING sign
HEATING sign
Icons
Name
ON/OFF
UP
DOWN

14
6.4 Operation guidance table
NO.
Item
Operation Method
1
Unlock
Touch both the UP key and the DOWN key for 5s to unlock.when unlocking, the
LOCK sign is off.when locking, the LOCK sign is on.
2
ON/OFF
Touch the ON/OFF key, the unit will turn off if the panel is on and turn on if the panel
is off.
3
Check Operation Parameters
The main interface displays the outlet water temperature by default, touch SETTING
key, then touch the UP key and DOWN key to check each parameter.Short press the
ON/OFF key or no operation in 10s, exit the query state.
4
Select Mode
Touch the SETTING key and STANDBY TIMING key for 5s to enter forced manual
defrost mode.
5
Temperature Adjustment
Press the SETTING key 5S to enter the system parameter query, and query each
parameter by combining the UP key and DOWN key. In the system query parameter
state, press the SETTING key to set the parameter, and set each parameter by
combining the UP key and DOWN key. The parameter serial number 0 is the default
setting temperature of the water tank, and the parameter serial number 1 is the setting
temperature of the heating return difference.
6
Time Adjustment
Touch the TIME key, hour flashes, touch the UP key and DOWN key to change the
hour, touch the TIME key again, minute flashes, touch the UP key and DOWN key to
change the minute. Touch the TIME key again to save the change and exit the clock
setting.
7
Timing Adjustment
Touch the TIME key 5s, hour of Period 1 start flashes, touch the UP key and DOWN
key to modify hours. Touch the TIME key again, minute flashes, touch the UP key and
DOWN key to modify minutes.Continue to touch the TIME key to enter the time setting
of Period 1 end, the operation is the same . Period 2 and period 3 are set in the same
way . If the start and end time settings of the time period are the same, the time period
is deemed to be canceled .
8
Manual Turn On Electric
Heater
In the state of power on or off, press the ELECTRIC HEATER key to enter or exit
manual electric heating. When manual electric heater is on, the electric heater symbol
lamp will be on.
9
Ventilation Mode
Long press the ELECTRIC HEATER key to enter and exit the ventilation mode.
10
Restore Defaults
In the shutdown state, long press the ELECTRIC HEATER key and SETTING key to
restore factory setting parameters.
6.5 Operation parameter table
NO.
State Name
Name
Display Range
Reservations
A
Water tank inlet temp.
℃
-9~99℃
Error code P1
B
Water tank outlet temp.
℃
-9~99℃
Error code P2
C
Coil temp.
℃
-9~99℃
Error code P3
D
Suction temp.
℃
-9~99℃
Error code P4
E
Ambient temp.
℃
-9~99℃
Error code P5
F
EEV opening
℃
10~48
N*10
H
Solar water tank temp.
℃
0~125(C7)℃
Error code P6
I
Exhaust temp.
℃
0~125(C7)℃
Error code P7

15
7. Troubleshooting
7.1 Non-error tips
Q: Why compressor cannot start immediately after setting?
A: Unit will wait for 3 minutes to balance the pressure of the refrigerant system before starting compressor again.It is a
self protection logic of the unit.
Q: Why sometimes the temperature shown on the display decreased while unit is running？
A: When the temperature of layer water inside the tank is much higher than the bottom part,upper hot water will be
mixed by the bottom cold water which is continually flow from the inlet tap water so that will decrease the water
temperature of upper part .
Q: Why sometimes the temperature shown on the display decreased but the unit still keeps off？
A: To avoid the unit turning on/off frequently,the unit will activate heat pump only when the water temperature in the
bottom of the tank is lower than the setting temperature.
Q: Why sometimes the unit shows ‘PA’ on the display?
A: The heat pump available running ambient temperature is from -7℃ to 43℃.If the ambient temperature range is out of this
range,the unit will show the PA to let user notice it.
Q: Why sometimes there is some water flowed from drainage pipe of PTR valve? W(hen the unit with PTR valve)
A: Because the water tank is pressure-bearable one,when water is heated inside the tank,water will expand,so the
pressure inside the tank will increase.If the pressure goes up more than 1.0MPa,PTR valve will activate to relief the
pressure and hot water drop will be discharged correspondingly.If water drop is continually discharged from PTR
valve drainage pipe,it is abnormal,please contact qualified stuff to repair.
7.2 Something about self-protection of unit
When the self-protection happens,the unit will be stopped and start self-check,and restart when the protection
resolved.
In the following circumstance,self-protection may happen:
Air inlet or outlet is blocked;
The coil is covered with too much dust;
Incorrect power supply (Exceeding the range of 220-240V).
7.3 Error phenomenon
Error phenomenon
Possible reason
Solution
Cold water tapped
out and display
screen
extinguished
Bad connection between
power supply plug and
socket.
Plug in again.
Setting water temperature is too low.
Set the water temperature higher.
Temperature sensor or PCB is broken.
Contact service center.
No hot water
tapped out
Public water supply is ceased.
Wait for water supply recover.
Cold water inlet pressure is too low.
(less than 0.15MPa)
Wait for inlet water pressure
increase.
Cold water inlet valve is closed.
Open the water inlet valve.
Water leakage
Hydraulic pipeline joints are not
sealed well.
Check and reseal all joints.
7.4Error code and trouble shooting table
Code
Description
Corrective action
P01
Lower water
temperature sensor
error
Maybe:the connection is not well.
Maybe:the sensor is broken.
Maybe:the PCB is broken.
P02
Upper water
temperature sensor
error
Maybe:the connection is not well.
Maybe:the sensor is broken.
Maybe:the PCB is broken.

16
Code
Description
Corrective action
P03
Coil temperature sensor error
Maybe:the connection is not well.
Maybe:the sensor is broken.
Maybe:the PCB is broken.
P04
Suction temperature
sensor error
Maybe:the connection is not well.
Maybe:the sensor is broken.
Maybe:the PCB is broken.
P05
Outdoor ambient
temperature sensor error
Maybe:the connection is not well.
Maybe:the sensor is broken.
Maybe:the PCB is broken.
P06
Anti-freezing protection
This protection is normal.The unit which is under standby
state will trigger this protection when the water tank
sensor detects the water temperature is lower than 5℃.
P07
Discharge
temperature sensor
error
Maybe:the connection is not well.
Maybe:the sensor is broken.
Maybe:the PCB is broken.
E01
High pressure protection
Maybe:the high pressure switch connection is not well.
Maybe:the pressure switch is broken.
Maybe:the refrigerant system is block.
Maybe:the refrigerant is too much.
Maybe:the PCB is broken.
E02
Low pressure protection
Maybe:the low pressure switch connection is not well.
Maybe:the pressure switch is broken.
Maybe:the refrigerant system is block.
Maybe:leakage in the refrigerant system.
Maybe:the refrigerant is not enough.
Maybe:the PCB is broken.
E03
Over-heat protection
Maybe:the E-heater protector’s connection is not well.
Maybe:the protector is broken.
Maybe:the E-heater is broken.
Maybe:the PCB is broken.
E04
Over-high protection of
discharge temperature
Maybe:the discharge temperature sensor connection
is not well.
Maybe:the discharge temperature sensor is broken.
Maybe:the refrigerant system is block.
Maybe:the refrigerant is too much.
Maybe:the PCB is broken.
PA
It is normal and no need repair.The heat pump available running ambient temperature
is from -7℃ to 43℃.If the ambient temperature is out of this range,the unit will show the
PA to let user notice it.During this period,the boost electrical heater can be used.
E08
Communication error
Maybe:the connection between PCB and controller is
not well.
Maybe:the controller is broken.
Maybe:the PCB is block.

17
NOTE
The diagnostic codes listed above are the most common.If a diagnostic code not listed above is displayed,please
contact residential technical assistance.
If any of E01/E02/E04 continuously appear 3 times within 30 minutes,the unit will consider it as heat pump system
error,and the unit will stop running.The unit will run until the power supply is reset.
8. Maintenance
8.1 Maintenance
Check the connection between power supply plug,socket and ground wiring regularly.
In some cold area b(low 0℃),if the unit will be stopped for a long time,all the water should be released in case of
freezing of inner tank and damage of boost electric heater.
It is recommended to clean the inner tank and boost E-heater every half year to keep an efficient performance.
Check the anode rod every half year and change it,if it has been used out.For more details,please contact the
supplier or the after-sale service.
It is recommended to set a lower temperature to decrease the heat release,prevent scale and save energy if the
outlet water volume is sufficient.
Clean the air filter every month in case of any inefficiency on the heating performance.
Before shutting off the heat pump the system off for a long time,please:
Shut off the power supply;
Release all the water in the water tank and the pipeline.Close all the valves; Check
the inner components regularly.
8.2 How to change the anode rod
Turn off the power supply,and turn off the water inlet valve.
Open hot water tap,and decrease the pressure of the inner tank.
Open the drainage valve,and drain out the water,until there are no water flow out. Take
out the anode rod.
Replace it with a new one,and make sure effective sealed.
Open cold water inlet tap until water flows out from outlet tap then close water outlet tap.
Power on and restart the unit.
Unit Anode rod
8.3 Recommended regular maintenance table
Item
Checking content
Check frequency
Action
1
Anode rod
Every 6 months
Replace it if it has been used out.
2
Inner tank
Every 6 months
Clean the tank.
3
Boost E-heater
Every 6 months
Clean E-heater.
4
PTR valve (If the unit
with PTR valve)
Every 1 year
Operate the hander of the PTR valve to
ensure that water can be flowed out.
If water does not flow freely when operating the hander,replace
PTR valve with a new one.