Duratech HEAT Dura+i User manual

DURA+10i
DURA+13i
DURA+18i
DURA+20i
DURA+25i
DURA+28Ti
Manual
+i
DURA+25i
DURA+28Ti

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ENG
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Dimensions.....................................................................................................................
1. Speci cations .............................................................................................................
1.1 Performance Data Dura+i .............................................................................
2. Preface .......................................................................................................................
3. Installation and Connection ........................................................................................
3.1 Installation Illustration....................................................................................
3.2 Swimming Pool Heat Pumps Location ..........................................................
3.3 How Close To Your Pool?..............................................................................
3.4 Swimming Pool Heat Pumps Plumbing.........................................................
3.5 Filter Pump Connection.................................................................................
3.6 Swimming Pool Heat Pumps Electrical Wiring..............................................
3.7 Initial Start-up of the Unit...............................................................................
3.8 Commisioning the LinkDongleTM ...................................................................
3.9 Connecting the Wi module ..........................................................................
3.10 Connecting the LinkTouchTM ........................................................................
4. Use and Operation Instruction....................................................................................
4.1 Interface Display ...........................................................................................
4.2 Time setting...................................................................................................
4.3 Setting the On/Off timer ................................................................................
4.4 Adjust setpoint...............................................................................................
4.5 Mode selection ..............................................................................................
4.6 Locking and unlocking the touch screen .......................................................
4.7 Silent function settings ..................................................................................
4.8 Troubleshooting guide...................................................................................
4.9 Parameter List and Breakdown Table ...........................................................
4.10 Interface drawing.........................................................................................
5. Maintenance and Inspection.......................................................................................
6. Appendix.....................................................................................................................
6.1 Caution & Warning ........................................................................................
6.2 Cable Speci action .......................................................................................
6.3 Comparison Table of Refrigerant Saturation Temperature............................
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Table of Contents
DURA+10i / DURA+13i
Dimensions
DURA+18i

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DURA+20i / DURA+25i / DURA+28Ti
1.1 Performance Data Dura+i
* Advised pool volume for an entirely insulated pool, with cover, free from wind and exposed to the sun.
UNIT DURA+10i DURA+13i
Advised Pool Volume* m330 - 55 40 - 70
Operating Air Temperature °C -10 ~ 43
Available Operation Mode Heating & Cooling
Air 27°C / Water 26°C / Humidity 80%
Heating Capacity kW 1,9 - 9,5 2,4 - 13
Btu 6483 - 32415 8189 - 44358
Consumed Power kW 0,118 - 1,39 0,145 - 1,96
COP 16,1 - 6,8 16,5 - 6,6
Air 15°C / Water 26°C / Humidity 70%
Heating Capacity kW 1,4 - 7,0 1,6 - 9,1
Btu 4777 - 23885 5459 - 31050
Consumed Power kW 0,205 - 1,48 0,238 - 1,89
COP 6,8 - 4,7 6,7 - 4,8
Power Supply 230V / 50Hz / 1 Phase
Casing Type Aluminium-alloy
Electronic Controller DuralinkTM ready with colour LCD
Nominal Running Current A2,8 4,3
Max Current A8,85 11
Condensor Titanium Heat Exchanger
Compressor Quantity 1
Compressor Type Rotary - Mitsubishi DC Inverter
Refrigerant R32 (HFK-32)
Refrigerant weight kg 0,45 0,50
GWP 675
CO2 equivalent ton 0,304 0,338
Fan Quantity 1
Fan Motor Type DC Brushless
Fan Power Input W 40 40
Fan Rotary Speed RPM 450 - 750 400 - 800
Air Flow m3/h 2000 - 2300 2000 - 2300
Fan Direction Horizontal both sides
Noise at 10m dB(A) 16,5 - 27 19 - 28,5
Water Connection mm 50
Nominal Water Flow m3/h 3,2 4,2
Water Pressure Drop (max): kPa 5 6
Unit Net Dimensions (L*W*H) mm See the drawing of the units
Unit Shipping Dimensions (L*W*H) mm See package label
Net Weight kg See nameplate
Shipping Weight kg See package label
1. Speci cations
Additional information:
This product contains a  uorinated greenhouse gas.
The refrigerant in the product is hermetically sealed.

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* Advised pool volume for an entirely insulated pool, with cover, free from wind and exposed to the sun. * Advised pool volume for an entirely insulated pool, with cover, free from wind and exposed to the sun.
UNIT DURA+18i DURA+20i
Advised Pool Volume* m350 - 85 60 - 100
Operating Air Temperature °C -10 ~ 43
Available Operation Mode Heating & Cooling
Air 27°C / Water 26°C / Humidity 80%
Heating Capacity kW 2,5 - 17,8 3,5 - 20
Btu 8530 - 60736 11942 - 68243
Consumed Power kW 0,151 - 2,78 0,214 - 3,07
COP 16,5 - 6,4 16,3 - 6,5
Air 15°C / Water 26°C / Humidity 70%
Heating Capacity kW 2,3 - 12,8 2,5 - 14,7
Btu 7848 - 43675 8530 - 50158
Consumed Power kW 0,353 -2,66 0,357 - 3,19
COP 6,5 - 4,8 7 - 4,6
Power Supply 230V / 50Hz / 1 Phase
Casing Type Aluminium-alloy
Electronic Controller DuralinkTM ready with colour LCD
Nominal Running Current A6,0 7,5
Max Current A 16 17,5
Condensor Titanium Heat Exchanger
Compressor Quantity 1
Compressor Type Rotary - Mitsubishi DC Inverter
Refrigerant R32 (HFK-32)
Refrigerant weight kg 0,65 0,80
GWP 675
CO2 equivalent 0,439 0,54
Fan Quantity 1
Fan Motor Type DC Brushless
Fan Power Input W 75 75
Fan Rotary Speed RPM 450 - 750 500 - 750
Air Flow m3/h 2700 - 3200 4300 - 5000
Fan Direction Horizontal both sides
Noise at 10m dB(A) 20 - 30 21 - 31
Water Connection mm 50
Nominal Water Flow m3/h 5,3 6,6
Water Pressure Drop (max): kPa 3 4
Unit Net Dimensions (L*W*H) mm See the drawing of the units
Unit Shipping Dimensions (L*W*H) mm See package label
Net Weight kg See nameplate
Shipping Weight kg See package label
UNIT DURA+25i DURA+28Ti
Advised Pool Volume* m370 - 120 90 - 160
Operating Air Temperature °C -10 ~ 43
Available Operation Mode Heating & Cooling
Air 27°C / Water 26°C / Humidity 80%
Heating Capacity kW 6,0 - 24 7,8 - 27,8
Btu 20473 - 81892 26615 - 93834
Consumed Power kW 0,375 - 3,99 0,488 - 4,71
COP 16,0 - 6,0 16,0 - 5,9
Air 15°C / Water 26°C / Humidity 70%
Heating Capacity kW 4,3 - 18,2 5,0 - 21,2
Btu 14672 - 62101 17061 - 72338
Consumed Power kW 0,661 - 4,04 0,769 - 4,81
COP 6,5 - 4,5 6,5 - 4,4
Power Supply 230V / 50Hz / 1 Phase 380V / 3N / 3Phase
Casing Type Aluminium-alloy
Electronic Controller DuralinkTM ready with colour LCD
Nominal Running Current A0,76 - 5,0 0,64 - 5,7
Max Current A3,5 - 22,3 1,3 - 9,3
Condensor Titanium Heat Exchanger
Compressor Quantity 1
Compressor Type Rotary - Panasonic DC Inverter
Refrigerant R32 (HFK-32)
Refrigerant weight kg 1,2 1,3
GWP 675
CO2 equivalent ton 0,81 0,878
Fan Quantity 1
Fan Motor Type DC Brushless
Fan Power Input W 150 150
Fan Rotary Speed RPM 500 - 600 700 - 750
Air Flow m3/h 4000 - 4800 4200 - 5000
Fan Direction Horizontal
Noise at 10m dB(A) 23 - 33 25 - 34
Water Connection mm 50
Nominal Water Flow m3/h 7,8 9,1
Water Pressure Drop (max): kPa 7 8
Unit Net Dimensions (L*W*H) mm See the drawing of the units
Unit Shipping Dimensions (L*W*H) mm See package label
Net Weight kg See nameplate
Shipping Weight kg See package label
Additional information:
This product contains a uorinated greenhouse gas.
The refrigerant in the product is hermetically sealed.
Additional information:
This product contains a uorinated greenhouse gas.
The refrigerant in the product is hermetically sealed.

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- In order to provide our customers with quality, reliability and versatility, this product has been
made to strict production standards. This manual includes all the necessary information about
installation, debugging, discharging and maintenance. Please read this manual carefully before
you open or maintain the unit. The manufacturer of this product will not be held responsible if
someone is injured or the unit is damaged, as a result of improper installation, debugging, or
unnecessary maintenance. It is vital that the instructions within this manual are adhered to at all
times. The unit must be installed by quali ed personnel.
2. Preface 14. This heat pump is not intended for use by persons 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 heat pump by a person responsible for their safety.
15. Children should always be supervised to ensure that they do not play with the heat pump.
16. Disconnect electricity when the heat pump is not in use and before cleaning.
17. The heat pump should be serviced only by quali ed service personnel. Contact your nearest
authorized service facility for examination, repair or adjustment.
18. If the supply cord is damaged, it must be replaced by the manufacturer or your service agent
or similarly quali ed person in order to avoid a hazard.
19. Please contact your dealer if your swimming pool heat pump is not working properly. There
might be a leakage when the heat pump does not heat the swimming pool water. The R32
refrigerant gas is safe when there is a leakage although  re can occure when a  ame, heating
device or stove gets in contact with the gas. Stop using your swimming pool heat pump until a
quali ed service technician has con rmed that the leak has been repaired.
20.Make sure that there is a circuit breaker for the unit, lack of a circuit breaker can lead to
electrical shock or  re.
21. The heat pump is equipped with an over-load protection system. It does not allow for the unit
to start for at least 3 minutes from a previous stoppage.
22. The condens water is not suitable for a potable water connection.
Please read these instructions carefully before using the heat pump and keep them for future
reference:
1. Always keep the unit upright. If the unit has been tilted or put on its side, wait 24h before
starting the heat pump.
2. Put the unit on a  at, solid base. Tilting the heat pump for max 3° is accepted.
3. Do not drop the heat pump.
4. The heat pump must always be installed outdoors.
5. Check if the voltage indicated on the heat pump corresponds to the local mains voltage before
you connect the unit. Please  nd more information about the electrical connection in section 3.5
6. Do not pull any electrical cable, sensor or tubing with unnecessary force.
7. Do not wrap any cable around the heat pump.
8. Do not use the heat pump in combination with a transformer.
9. If the heat pump is damaged during transportation, it must be replaced, please contact your
service centre or similarly quali ed persons in order to avoid a hazard.
10. Always make sure the water connections of the heat pump are properly locked before you
start using the machine.
11. Make sure the  ow sensor is installed properly after maintenance.
12. Use supply wires suitable for 75°C.
13. The evaporator  ns must not be damaged.
The heat pump will always perform very well, provided the following elements are present
1. Fresh air 2. Electricity 3. Swimming pool water

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3. Installation and Connection
3.1 Installation Illustration
Attention:
Please follow these steps when using for the  rst time
1.Open valve and charge water.
2.Make sure that the pump and the water-in pipe have been  lled with water.
3.Close the valve and start the unit.
ATTN: It is necessary that the water-in pipe is higher than the pool surface.
Put the heat pump on a  at, solid base. Tilting the heat pump for max 3° is allowed.
Install silent blocks in order to avoid vibrations and noise.
All feeding of water treatment to the pool water has to be done downstream of the heat pump.
It is normal for condens water to come out of the heat pump. This is not a leak or fault with the
unit. If the humidity is very high, the condens water could be a number of liters a day.
Always keep the heat pump in upright position. If the unit has been tilted, then wait 24h before
starting the heat pump.
It is recommended to install a by-pass for easy maintenance.
When using automatic chlorine and pH dosage systems, it is of uttermost importance to protect
the heat pump from high concentrations of these chemicals that could corrode the heat exchanger
after long term use. Therefore, such systems should add the chemicals in the conduits located
DOWNSTREAM of the heat pump and it is recommended to install a check-valve in order to
prevent back ow when there is no water circulation.
Damage to the heat pump caused by disregarding any of these recommendations will invalidate
the warranty.
3.2 Swimming Pool Heat Pumps Location
The unit may be installed virtually anywhere outdoors. For indoor pools please consult the
supplier. DO NOT place the unit in an enclosed area with a limited air volume, where the units
discharge air will be re-circulated.
DO NOT place the unit next to shrubs which can block air inlet. These locations prevent the unit of
having a continuous source of fresh air which reduces its ef ciency and may prevent adequate
heat delivery.
The heat pump should be located maximum 7,5m away from the swimming pool. The longer the
distance from the pool, the greater the heat loss from the piping. For longer distances it is highly
recommended to insulate the piping to avoid excessive heat loss.
3.3 How Close To Your Pool?

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It is recommended to install a by-pass for easy maintenance.All feeding of water treatment to the
pool water has to be done downstream of the heat pump. Give serious consideration to adding a
quick coupler  tting at the unit inlet and outlet to allow easy draining of unit for winterizing and to
provide easier access should servicing be required.
Condensation: Since the Heat pump cools down the air about 4 -5°C, water may condense on the
 ns of the horseshoe shaped evaporator. If the relative humidity is very high, this could be as
much as several litres an hour. The water will run down the  ns into the basepan and drain out
through the barbed plastic condensation drain  tting on the side of the basepan. This  tting is
designed to accept 20mm clear vinyl tubing which can be pushed on by hand and run to a suitable
drain. It is easy to mistake the condensation for a water leak inside the unit.
Before the installation, remove the top panel as shown in
3.9. Push the  lter pump connection cables through the
cable glant. Afterwards connect the cable to the connector
clamps one and two. The  lter pump will be regulated
automaticly after this installation.
3.4 Swimming Pool Heat Pumps Plumbing
3.5 Filter Pump Connection
NB: A quick way to verify that the water is condensation is to shut off the unit and keep the
pool pump running. If the water stops running out of the basepan, it is condensation. AN EVEN
QUICKER WAY IS to TEST THE DRAIN WATER FOR CHLORINE - if the is no chlorine present,
then it’s condensation.
Check if the electrical mains voltage corresponds with the operating voltage of the heat pump
prior to hooking up the unit. It is recommended to use a separate fuse as well as adequate wiring.
The unit has a separate molded-in junction box with a standard electrical conduit nipple already in
place. Just remove the screws and the front panel, feed your supply lines in through the conduit
nipple and wire-nut the electric supply wires to the three connections already in the junction box.
To complete electrical hookup, connect Heat Pump by electrical conduit, UF cable or other
suitable means as speci ed (as permitted by local electrical authorities) to a dedicated AC power
supply branch circuit equipped with the proper circuit breaker, disconnect or time delay fuse
protection.
Disconnect - A disconnect means (circuit breaker , fused or un-fused switch) should be located
within sight of and readily accessible from the unit, This is common practice on commercial and
residential air conditioners and heat pumps. It prevents remotely-energizing unattended
equipment and permits turning off power at the unit while the unit is being serviced.
Start up Procedure - After installation is completed, you should follow these steps:
1. Turn on your  lter pump. Check for water leaks and verify  ow to and from the pool.
2. Turn on the electrical power supply to the unit, then press the key ON/OFF on the wire
controller, It should start in several seconds.
3. After running a few minutes make sure the air leaving the side of the unit is cooler.
4. With the unit operating turn the  lter pump off. The unit should also turn off automatically,
5. Allow the unit and pool pump to run 24 hours per day until desired pool water temperature is
reached. When the water-in temperature reaches this setting, the unit will slow down for a period
of time, if the temperature is maintained for 45 minutes the unit will turn off. The unit will now
automatically restart (as long as your pool pump is running)when the pool temperature drops
more than 0.2 below set temperature.
Time Delay- The unit is equipped with a 3 minute built-in solid state restart delay included to
protect control circuit components and to eliminate restart cycling and contactor chatter. This
time delay will automatically restart the unit approximately 3 minutes after each control circuit
interruption. Even a brief power interruption will activate the solid state 3 minute restart delay and
prevent the unit from starting until the 3 minute countdown is completed.
3.6 Swimming Pool Heat Pumps Electrical Wiring
3.7 Initial Start-up of the Unit
NOTE: Although the heat pump is electrically isolated from the rest of the pool equipment, this
only prevents the passage of electricity to or from the pool water. Grounding the unit is still
required to protect yourself from short circuits inside the unit. Provide an adequate ground
connection.
NOTE: In order for the unit to heat the pool or spa, the  lter pump must be running to
circulate water through the heat exchanger.
NOTE: Power off the heat pump and disconnect from mains (230 VAC), prior to the installation.

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3.8 Commissioning the LinkDongleTM
Remove the cable tie
Place the LinkDongleTM on the
pump using the magnet so
that it sticks above the pump.
Note the ‘this side up’ sticker
so that the LinkDongleTM is
correctly positioned
NOTE: Correct positioning of the LinkDongleTM is necessary for the LinkTouch to function properly.
This chapter explains which steps are necessary to make the LinkDongleTM ready for use.
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3.9 Installing the Wi module
This chapter explains which steps are necessary to instal the Wi module.
Remove the three screws on the back of
the heat pump. Then remove the top lid by
a sliding and pulling motion.
Remove the screws at the top and bottom
of the front of the heat pump. Then remove
the front panel.
NOTE: Power off the heat pump and disconnect from mains (230 VAC), prior to the installation.
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Remove the screws and open the
electronics lid.
Insert the wi module through the grill on
the right side of the pump. Mount the wi
module on the outside.
Push the connector
through the plug.
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4
Connect the wi module with one half of the
splitter, reconnect the display cable with the
other half.
Wi module
Display cable
Display cable
Splitter Circuit
board
Circuit
board
NOTE: Reconnect the heat pump to mains (230 VAC), after the installation.
NOTE: For connecting the WiFi module to your device see Wi module manual.
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Disconnect the display cable from the
circuit board.

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3.10 Connecting the LinkTouchTM
To operate the pump with the LinkTouchTM, perform the following steps:
Select “Pair Start”-mode from the
settings menu, on your LinkTouchTM.
Touch the screen once to put the
LinkTouchTM in pairing mode.
Make sure the LinkTouchTM is in close proximity (<2m) of the device which you would like to pair with
wirelessly. Select “Pair Start” on the LinkTouchTM. Power on the device.
The device will be in pairing mode for about 2 minutes after switched on.
The LinkTouchTM will now be pairing with the device.
SETTINGS
Pair
start
Pairing
4.Use and Operation Instruction
4.1 General presentation
Number Function
1Auto mode
2Cooling mode
3Heating mode
4Compressor’s ON indicator
5Fan
6Timer
7Defrost mode
8Alarm
9Lock screen
10 Water input temperature
11 Water output temperature
12 On/Off/Back
13 Main screen
14 Setpoint temperature
15 System time
16 Operating mode selection
17 Adjust setpoint
18 Setting silent mode timer
19 Activate silent mode
20 Set On/Off timers
21 Parameter menu
22 Acces list of faults
23 Set data and time
24 Con rm
25 Back (changes not con rmed)
The heat pump is equipped with a digital control panel with a touch screen, electronically connected
and pre-set at the factory in heating mode.
123456789
15 10
19
16 17
18
2425
11
12
2022
2123
14
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To switch from OFF to ON mode and vice versa, press the button.
OFF mode
When the heat pump is idle (in stand by mode),
OFF is displayed as shown on the screen.
The black screen indicates that the heat pump
is idle; settings can be adjusted in this mode.
ON mode
When the heat pump is running or priming
(setpoint reached), the screen turns blue.
4.2 Time setting
1x
After you’ve pressed OK, press once to return to the main screen.
The date and time can be set either in ON or in OFF mode.
Swipe the main screen to the right Press on the Time Setting icon
Swipe up or down to set the desired date,
afterwards press OK
Swipe up or down to set the desired time,
afterwards press OK

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4.3 Setting the On/Off timers
Setting this function is usefull if you would like to run the heat pump for a shorter period than what is
de ned by the  ltration clock. Therefore, you can program a deferred start and an anticipated stop
or simply stop a certain timeframe from running (at night, for example).
lt is possible to set one Start Timer and one Stop Timer.
The setting step is “hour to hour”.
Blue highlighting = Activated
Grey = Deactivated
Press twice to return to the main screen.
Swipe the main screen to the right
Setting the Start timer
Setting the Stop timer
Press on the ON timer
Press on the OFF timer
Swipe up or down to set the desired time,
afterwards activate the timer in the top
right corner
Swipe up or down to set the desired time,
afterwards activate the timer in the top
right corner
After you have set the Start and Stop timer, you can activate or deactivate them by pressing the
slider on the right next to the timers.
Press on the Timer icon

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4.4 Adjust setpoint
The setpoint can be changed either in ON or in OFF mode with an accuracy of 0.5° C.
4.5 Mode selection
Swipe the main screen to the left Swipe the main screen to the left Press on the Mode iconPress on the Temp Setting icon
Swipe up or down to set
the desired temperature Press OK Swipe left or right to choose the desired mode Press OK
After you’ve pressed OK, press once to return to the main screen. After you’ve pressed OK, press once to return to the main screen.

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4.6 Locking and unlocking the touch screen
The screen can be locked or unlocked either in ON or in OFF mode.
Lock activated
Lock deactivated
4.7 Silent function settings
Silent mode enables the heat pump to be used in economy and very silent mode when the need
for heating is low (maintaining the pool temperature or need for ultra-silent operation).
This function can be Activated/Deactivated manually or using a Timer.
Press 5 seconds on button
If the screen is successfully locked, you’ll
see a lock icon in the top right corner
Press 5 seconds on button
Locking
If the screen is successfully unlocked, the
lock icon in the top right corner will be gone
Unlocking
Manual activation
Swipe the main screen
to the left
Silent Mode is activated The icon appears in the top right
corner of the main screen
Press the Silent Mode icon to activate the
silent mode
Press once to return to the main screen.

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Setting the Start silent mode timer
Swipe the main screen to the left
Press on the ON timer
Press the Silent Timing icon
Swipe up or down to set the desired time,
afterwards press OK
Manual deactivation
Swipe the main screen
to the left
Press the Silent Mode icon to deactivate
the silent mode
Silent Mode is deactivated
Press once to return to the main screen.
The icon appears in the top right
corner of the main screen

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Setting the Stop silent mode timer
NOTE: The setting step is “hour to hour”.
Once the Timer is activated, it is active for all seven days of the week.
Press on the ON timer
Swipe up or down to set the desired time,
afterwards press OK
Activate the timer by pressing the slider in
the middle
Press once to return to the main screen.
To delete the error list, press on the icon.
NOTE: Certain operations must be carried out by an authorized technician.
NOTE: When the problem is resolved, the error is automatically acknowledged l.D and the
triangle disappears.
4.8 Troubleshooting guide
lf a fault occurs with the heat pump, the icon appears in the top right corner of the screen.
To delete the error list, press on the icon.
Error codes
Description
Date and time
of occurance
Press twice to return to the main screen.
Swipe the screen to the left Press the Fault icon
Looking up the fault list

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4.9 Parameter List and Breakdown Table
ELECTRONIC CONTROL FAULT TABLE:
Can be judged according to the remote controller failure code and troubleshooting
Protect/fault Fault
display
Reason Elimination methods
Inlet Temp. Sensor Fault P01 The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Outlet Temp. Sensor
Fault
P02 The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Ambient Temp. Sensor
Fault
P04 The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Coil 1 Temp. Sensor
Fault
P05 The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Coil 2 Temp. Sensor
Fault
P15 The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Suction Temp. Sensor
Fault
P07 The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Discharge Temp. Sensor
Fault
P081 The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Exhaust Air over Temp
Prot.
P082 The compressor is overload Check whether the system of the compressor
is running normally
Antifreeze Temp. Sensor
Fault
P09 Antifreeze temp sensor is
broken or short circuited
Check and replace this temp sensor
Pressure sensor Fault PP The pressure Sensor is broken Check or change the pressure Sensor
or pressure
High Pressure Prot. E01 The high-pressure switch is
broken
Check the pressure switch and cold circuit
Low Pressure Prot. E02 Low pressure1 protection Check the pressure switch and cold circuit
Flow Switch Prot. E03 No water/little water in
water system
Check the pipe water ow and water pump
Waterway Anti-freezing
Prot.
E05 Water temp.or ambient temp.
is too low
Inlet and outlet temp.
too big
E06 Water ow is not enough
and low differential pressure
Check the pipe water ow and whether
water system is clogged or not
Anti-freezing Prot. E07 Water ow is not enough Check the pipe water ow and whether
water system is clogged or not
Winter Primary Anti-free-
zing Prot.
E19 The ambient temp. Is low in winter
Winter SecondaryA
nti-freezing Prot.
E29 The ambient temp. Is low in winter
Comp. Overcurrent Prot E051 The compressor is overload Check whether the system of the compressor
is running normally
Communication Fault E08 Communication failure between
wire controllerand main board
Check the wire connection between
remote wire controller and main board
Communication Fault
(speed control module)
E081 Speed control module and main
board communication fail
Check the communication connection
Low AT Protection TP Ambient temp is too low
EC fan feedback Fault F051 There is something wrong with fan
motor and fan motor stops running
Check whether fan motor is broken or locked
or not
Fan Motor1 Fault F031 1. Motor is in locked-rotor state
2.The wire connection between
DC-fan motor module and fan
motor is in bad contact
1.Change a new fan motor
2.Check the wire connection and make sure
they are in good contact
Fan Motor2 Fault F032 1. Motor is in locked-rotor state
2.The wire connection between
DC-fan motor module and fan
motor is in bad contact
1.Change a new fan motor
2.Check the wire connection and make sure
they are in good contact
Protection/fault Fault
display
Reason Elimination methods
Drv1 MOP alarm F01 MOP drive alarm Recovery after 150 seconds
Inverter ofine F02 Frequency conversion board and
main board communication failure
Check the communication connection
IPM protection F03 IPM modular protection Recovery after 150 seconds
Comp. Driver Failure F04 Lack of phase,step or drive
hardware damage
Check the measuring voltage check frequency
conversion board hardware
DC Fan Fault F05 Motor current feedback open
circuit or shortcircuit
Check whether current return wires connected
motor
IPM Overcurrent F06 IPM Input current is large Check and adjust the current measurement
Inv. DC Overvoltage F07 DC bus voltage > DC bus
overvoltage protection value
Check the input voltage measurement
Inv. DC Lessvoltage F08 DC bus voltage < DC bus
overvoltage protection value
Check the input voltage measurement
Inv. Input Lessvolt. F09 The input voltage is low, causing
the input current is high
Check the input voltage measurement
Inv. Input Overvolt. F10 The input voltage is too high, more
than outage protection current
RMS
Check the input voltage measurement
Inv. Sampling Volt. F11 The input voltage sampling fault Check and adjust the current measurement
Comm. Err DSP-PFC F12 DS Pand PFC connect fault Check the communication connection
Input Over Cur. F26 The equipment load is too large
PFC fault F27 The PFC circuit protection Check the PFC switch tube shortcircuit or not
IPM Over heating F15 The IPM module is overheat Check and adjust the current measurement
Weak Magnetic Warn F16 Compressor magnetic force is not
enough
Inv. Input Out Phase F17 The input voltage lost phase Check and measure the voltage adjustment
IPM Sampling Cur. F18 PM sampling electricity is fault Check and measure the current adjustment
Inv. Temp. Probe Fail F19 Sensor is short circuit or open
circuit
Inspect and replace the sensor
Inverter Overheating F20 The transducer is overheat Check and adjust the current measurement
Inv. Overheating Warn F22 Transducer temperature is too
high
Check and adjust the current measurement
Comp. OverCur. Warn F23 Compressor electricity is large The compressor overcu rrent protection
Input Over Cur. Warn F24 Input current is too large Check and adjust the current measurement
EEPROM Error Warn F25 MCU error Check whether the chip is damaged, replace
the chip
V15V over/under
voltage fault
F28 The V15V is overload or
undervoltage
Check the V15V input voltage in range
13.5v~16.5v or not

35
ENG
34
PARAMETER LIST:
Meaning Default Remarks
Refrigeration target temperature set point 27°C Adjustable
Heating the target temperature set point 27°C Adjustable
Automatic target temerature set point 27°C Adjustable
4.10 Interface drawing
Wire control interface diagram and denition
Sign Meaning
V 12V (power +)
R No use
T No use
A 485A
B 485B
GGND (power -)
V
R
T
A
B
G
Main board of the input and output interface instructions below
Number Sign Meaning
01 R01 Compressor (output 220-230VAC)
02 R02 Water pump (output 220-230VAC)
03 R03 4-way valve (output 220-230VAC)
04 R04 High speed of fan (output 220-230VAC)
05 R05 Low speed of fan (output 220-230VA)
06 L Live wire (input 220-230VAC)
07 N Neutral wire (input 220-230VAC)
08 AI/DI01 Emergency switch (input)
09 AI/DI02 Water ow switch (input)
10 AI/DI03 System low pressure (input)
11 AI/DI04 System high pressure (input)
12 AI/DI05 System suction temperature ( input)
13 AI/DI06 Water input temperature (input)
14 AI/DI07 Water output temperature ( input)
15 AI/DI08 System fan coil temperature ( input)
16 AI/DI09 Ambient temperature ( input)
17 AI/DI10 Mode switch (input)
18 AI/DI11 Master-slave machine switch/ Antifreeze temperature
(input)
19 AI12(50K) System Exhaust temperature (input)
20 0_5V_IN Compressor current detection/Pressure sensor(input)
21 PWM_IN Master-slave machine switch/ Feedback signal of EC
fan ( input)
22 PWM_OUT AC fan control (output)
23 0_10V_OUT EC fan control (output)
24 +5V +5V (output)
25 +12V +12V (output)
26 GND
485_B1
485_A1
12V
Frequency conversion board communications
27
28
29
30 GND
485_B2
485_A2
12V
Color line controller communication
31
32
33
34 CN9 Electronic expansion valve
35 GND
485_B3
485_A3
12V
The port forcentralized control
36
37
38
39 CN12 Program download interface

37
ENG
36
L N 12
P
N
22 0-24 0 V~/50Hz
L
N
R ED
BLU
TO P OWER
SUPP LY
N
Y/G
K2
L
T O P UM P
CN11
P14 L
P13 L
CN99
PL
FS
LP
CN30
5
EE V
ACL
ACN
GND
CN15
reactor
GND
COMP
UVW
UW
V
RED B LK WHT
U W
V
L
DCFAN
CN97
HP
BRN
B LU
AT：Am bie nt tem pe ra tu re
COMP：C om press o r
CT：C oil te mp er at ur e
FM：Fan m oto r
IT：Inlet water temperature
LP：Lo w pr essu re p ro tect io n
OT：Outl et wa te r t em pe ra tur e
FS：Flow switch
HP：High pr e ss ure p ro te cti on
4V：4 way valve
ET：Exh au st te mp er at ur e
EE V：Electronic expansion valve
SUT：Suction temperature
K2：R ea ly of pum p
FM
t
5K t
50K
t
5K
t
5K
CN13CN18CN66
CN42
485B1
485A1 12V
GND
GND
485A1
485B1
RS485-
2(CC)
RS485
4V
K2
OT
(R ED )
AT
(WHT)
IT
(BLU)
S UT
(GRN)
CT
(YEL)
ET
(GRY)
t
5K
t
5K
MO DE
34
Remote
ON/OFF
CODE:20201216-0006
DURA+10i
5 6 7
RED
WHT B LK
3
12V
12 V
8
4
Y EL
B LK
RED
DURAT ECH
WHT
Y EL
B LK
RED
WHT
Y EL 485 B-
BLK GND R E D 12V
W H T 485 A+
4
Controller
U W
L N 12
L
N
R ED
BLU
Y/G
K2
CN13
H EA T
CN18
E MV
CN66
RY
CN11
FOU R
OT
(R ED )
P14 L
P13 L
CN30 CN42
CN15
E EV
AT
(WHT)
4V K2
ACL
ACN
L
N
reactor
EE V
5
GND
COM P
UVW
UW
V
RED B LK WHT
FM
V
CODE：20201216-0007
F I L TE R
L
BLU
B RN
N
IT
(BLU)
S UT
(GRN)
CT
(YEL)Magetic ring
t
50K
ET
(GRY)
DCFAN
CN97
L
N
P
N
TO P UM P
CN99
PL
P03
t
5K
t
5K
t
5K
t
5K
t
5K
DURA+18i
FS
LP
485B1
485A1 12V
GND
GND
485A1
485B1
RS485-
2(CC)
RS485
HP
HP OHP
OHP
HP OHP
GRN
2 20 -2 40 V~/50Hz
TO P OWER
SU P PLY MO DE
CN10
34
Remote
ON/OFF
OT：Outl et wa te r t em pe ra tur e
4V：4 way valve
AT：Am bi e nt tem pe ra tu re
COMP：C om press o r
CT：C oil te mp er at ur e
FM：Fan m oto r
IT：Inlet water temperature
LP：Lo w pr essu re p ro tect io n
FS：Flow switch
HP：High pr e ss ure p ro te cti on
ET：Exh au st te mp er at ur e
EE V：Electronic expansion valve
K2：Rea ly of pum p
OHP：Overheat protection
SUT：Suction temperature
RED
WHT
B LK
3
678
5
12 V
12 V
4
Y EL
B LK
RED
WHT
Y EL 485 B-
BLK GND R E D 12 V
W H T 485 A+
4
Controller
and DURA+13i
U W
L N 12
L
N
R ED
BLU
Y/G
K2
CN13
H EA T
CN18
E MV
CN66
RY
CN11
FOU R
OT
(R ED )
P14 L
P13 L
CN30 CN42
CN15
E EV
AT
(WHT)
4V K2
ACL
ACN
L
N
reactor
EE V
5
GND
COMP
UVW
UW
V
RED B LK WHT
FM
V
CODE：20201216-0008
F I L TE R
L
BLU
B RN
N
IT
(BLU)
S UT
(GRN)
CT
(YEL)Magetic ring
t
50K
ET
(GRY)
DCFAN
CN97
L
N
P
N
TO P UM P
CN99
PL
P03
t
5K
t
5K
t
5K
t
5K
t
5K
FS
LP
485B1
485A1 12V
GND
GND
485A1
485B1
RS485-
2(CC)
RS485
HP
HP OHP
OHP
HP OHP
GRN
2 20 -2 40 V~/50Hz
TO P OWER
SU P PLY MO DE
CN10
34
Remote
ON/OFF
DURA+20i
OT：Outl et wa te r t em pe ra tur e
4V：4 way valve
AT：Am bie nt tem pe ra tu re
COMP：C om press o r
CT：C oil te mp erat ur e
FM：Fan m oto r
IT：Inlet water temperature
LP：Lo w pr essu r e p ro tect io n
FS：Flow switch
HP：High pr e ssure p ro te ction
ET：Exh au st te mp er at ur e
EE V：Electronic expansion valve
K2：R ea ly of pum p
OHP：Overheat protection
SUT：Suction temperature
RED
WHT
B LK
3
678
5
12 V
4
Y EL
B LK
RED
WHT
12 V
Y EL 485 B-
BLK GND R E D 12 V
W H T 485 A+
4
Controller
DURA+25i

39
ENG
38
DURA+28Ti
5. Maintenance and Inspection
- Check the water supply device and the release often. You should avoid the condition of no water
or air entering into system, as this will in uence unit’s performance and reliability. You should clear
the pool/spa  lter regularly to avoid damage to the unit as a result of the dirty of clogged  lter.
- The area around the unit should be dry, clean and well ventilated. Clean the side heating
exchanger regularly to maintain good heat exchange as conserve energy.
- The operation pressure of the refrigerant system should only be serviced by a certi ed
technician.
- Check the power supply and cable connection often. Should the unit begin to operate
abnormally, switch it off and contact the quali ed technician.
- Discharge all water in the water pump and water system ,so that freezing of the water in the
pump or water system does not occur. You should discharge the water at the bottom of water
pump if the unit will not be used for an extended period of time. You should check the unit
thoroughly and  ll the system with water fully before using it for the  rst time after a prolonged
period of no usage.
- Checks to the area
Prior to beginning work on systems containing  ammable refrigerants, safety checks are
necessary to ensure that the risk of ignition is minimised. For repair to the refrigerating system,
the following precautions shall be complied with prior to conducting work on the system.
- Work procedure
Work shall be undertaken under a controlled procedure so as to minimise the risk of a  ammable
gas or vapour being present while the work is being performed.
- General work area
All maintenance staff and others working in the local area shall be instructed on the nature of work
being carried out. Work in con ned spaces shall be avoided. The area around the workspace shall
be sectioned off. Ensure that the conditions within the area have been made safe by control of
 ammable material.
- Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work,
to ensure the technician is aware of potentially  ammable atmospheres. Ensure that the leak
detection equipment being used is suitable for use with  ammable refrigerants, i.e. non-sparking,
adequately sealed or intrinsically safe.
- Presence of  re extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated parts,
appropriate  re extinguishing equipment shall be available to hand. Have a dry powder or CO2
 re extinguisher adjacent to the charging area.
- No ignition sources
No person carrying out work in relation to a refrigeration system which involves exposing any pipe
work that contains or has contained  ammable refrigerant shall use any sources of ignition in such
a manner that it may lead to the risk of  re or explosion. All possible ignition sources, including
cigarette smoking, should be kept suf ciently far away from the site of installation, repairing,
disposal, during which  ammable refrigerant can possibly be released to the surrounding space.
Prior to work taking place, the area around the equipment is to be surveyed to make sure that there
are no  ammable hazards or ignition risks. “No Smoking” signs shall be displayed.
- Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before breaking into the system
or conducting any hot work. A degree of ventilation shall continue during the period that the work is
carried out. The ventilation should safely disperse any released refrigerant and preferably expel it
externally into the atmosphere. prolonged period of no usage.
- Checks to the refrigeration equipment
Where electrical components are being changed, they shall be  t for the purpose and to the correct
speci cation. At all times the manufacturer’s maintenance and service guidelines shall be followed.
If in doubt consult the manufacturer’s technical department for assistance.
The following checks shall be applied to installations using  ammable refrigerants:
The charge size is in accordance with the room size within which the refrigerant containing
parts are installed;
The ventilation machinery and outlets are operating adequately and are not obstructed;
If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the
presence of refrigerant;