Maxinverter-21S Full Inverter Pool Heat Pump Instruction Manual

Maxinverter-21S Full Inverter Pool Heat Pump

Specifications

• Product: Full Inverter Pool Heat Pump

• Models: Maxinverter-13S, Maxinverter-17S, Maxinverter-21S

• Refrigerant: R32 (HFC-32) with a Global Warming Potential (GWP)
  of 675

• Features: Meticulously designed with high-quality materials and
  components for durability

Product Usage Instructions

1. Safety Precautions

Before proceeding with the installation and operation of the
pool heat pump, it is crucial to adhere to the following safety
precautions:

• Installation should be carried out by a licensed electrician in
  compliance with national electrical standards to prevent electrical
  hazards.

• Keep the heat pump away from children, elderly, or
  physically/mentally handicapped persons to avoid accidents and
  warranty nullification.

• Avoid inserting objects into the fan blade and ensure proper
  grounding of the electrical system.

• If installing in an area prone to lightning strikes, implement
  lightning protection measures.

2. Installation of the Unit

Refer to the provided installation manual for detailed steps on
installing the pool heat pump. Ensure proper positioning,
electrical connections, and adequate ventilation for optimal
performance.

3. Operation and Maintenance

To operate the pool heat pump efficiently and prolong its
lifespan, follow these guidelines:

• Refer to the operation manual for instructions on adjusting
  settings and initial operation.

• Maintain regular maintenance checks as per the manufacturer’s
  recommendations to prevent malfunctions.

• Monitor error codes displayed on the unit and refer to the
  manual for troubleshooting solutions.

Frequently Asked Questions (FAQ)

Q: Can I install the pool heat pump myself?

A: Installation of the pool heat pump should be done by a
licensed electrician to ensure safety and compliance with
electrical standards.

Q: What refrigerant does the heat pump use?

A: The heat pump uses R32 refrigerant with a Global Warming
Potential (GWP) of 675. It is essential for the device to function
properly.

Installation & Operation Manual
Full Inverter Pool Heat Pump
Maxinverter-13S/Maxinverter-17S/Maxinverter-21S
Thank you very much for purchasing our product,please keep and read this manual carefully before you install heat pump.

Dear Customer We really appreciate that you have chosen our swimming pool heat pump. Meticulously designed, using only the highest quality materials and components, your pool heat pump is designed to last longer. To enable your swimming pool heat pump to give you many years of perfect trouble-free service, we would recommend you to follow the instructions of the service manual carefully.
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-IMPORT SAFETY PRECAUTIONS
IMPORTANT NOTICE:
This guide provides installation and operation instructions for the pool heat pump. Please consult the technical for any questions regarding this equipment.
ATTENTION INSTALLER:
This guide contains important information about the installation, operation and safe use of this product. This Information should be given to the owner and operator of this equipment after installation.
ATTENTION USER:
This manual contains important information that will help you in operating and maintaining this heat pump. Please retain it for further reference.
WARNING- Before installing this product, read and follow all warning notices and instructions which are included. Failure to follow safety warnings and instructions can result in severe injury, death, or property damage.

DANGER

—– RISK OF ELECTRIC SHOCK OR ELECTROCUTION.

The electrical supply to this product must be installed by a licensed or certified electrician in accordance with national electrical standard. Improper installation will create an electrical hazard which could result in death or Serious injury to heat pump uses, installers or others due to electrical shock, and may also cause damage to Property. Read and follow the specific instructions inside this guides.
WARNING- This pool heat pump is not intended to operated or adjusted by young children, elderly, infirm or Physically/mentally handicapped persons, violating the warning will be annulled warranty of the product.

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Fluorinated greenhouse gas ­ (R32)

The device contains the fluorinated greenhouse gas (R32) which is required for the device to work.

Industrial designation

HFC-32

Common designation

R32

Global warming potential (GWP) 675

Further information can be found on the device itself or the Specifications.

WARNING!
Risk of fire and explosion through leaking finned heat exchanger! The refrigerant circuit of the finned heat exchanger contains highly pressurised, easily flammable, odourless gas. Risk of fire and explosion in the event of uncontrolled gas leakage. – Action of filling gas must be conducted by professional with R32 operating license. – Keep the heat pump away from heat sources and naked flames. – Do not drill into or scorch the heat pump. – Do not use any objects apart from those permitted by the manufacturer to speed up the defrosting process. – Immediately shut off the heat pump if you suspect a gas leakage. – The refrigerant is odourless. Always keep ignition sources away from the installation site of the heat pump. – Contact an authorized expert if you suspect a gas leakage.

WARNING!
Risk of electric shock! A faulty electrical installation or a mains voltage that is too high can lead to electric shock. – Have the installation, initial start-up and maintenance of the heat pump carried out by authorized technician only. – Please always cut the power supply if you want to open the cabinet to reach inside the heat pump as there is high voltage electricity inside. – Only start work on the heat pump after checking all safety regulations. – Only connect the heat pump if the mains voltage from the power socket matches the voltage indicated on the rating plate. – Do not operate the heat pump if there is visible damage or the mains cable or the mains plug is defective. – Do not open the housing. Leave repairs to qualified specialists. Liability and warranty claims are

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excluded in the event of repairs carried out on your own, improper operation. – Ensure that children do not insert any objects into the fan blade and heat pump. – Ensure that the electrical system to which the heat pump is connected has an earth conductor. – If the unit would be installed where is vulnerable to lightning stroke, lightning protection measurements must be carried out.
ATTENTION! – The manufacturer declines any responsibility for the damage caused with the people,objects and of the errors due to the installation that disobey the manual guideline. Any use that is without conformity at the origin of its manufacturing will be regarded as dangerous. – Please always keep the heat pump in the ventilation place and away from anything which could cause fire. – Don’t weld the pipe if there is refrigerant inside machine. Please keep the machine out of the confined space when make gas filling by the authorized technician. – Please always empty the water in heat pump during winter time or when the ambient temperature drops below 0, or else the Titanium exchanger will be damaged because of being frozen, in such case, it will be out of warranty for this machine. – Please well keep the display controller in a dry area to protect the display controller from being damaged by humidity.
*CONTENT 1. Accessories description 2. Attention for safety 3. Installation of the unit 4. Specifications 5. Electrical Wiring 6.Instruction of operation 7. Adjusting and Initial operation 8. Operation and maintenance 9. Error codes & Solutions 10. WiFi-Function
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1. Accessories description

Each unit produced by our factory is with the following accessories:

No.

Name

1 Instruction Manual

2 Drain-pipe

3 Drain-pipe connector

4 Rubber shock absorber

5 Heat pump unit

6 Water connection

Qty. 1 PC 1 PC 1 PC 4 PCS 1 SET 2 SET

Use Guide users to install the system Used for draining the condensate water Connect the drain pipe to the heat pump unit Reduce vibration and reduce noise For heating water Connect the piping system

For function you need to purchase at least the following parts for each unit:

No.

Name

1 Water pump

2 Filter system

3 Water pipes system

Qty.

Use

1 Cycle the heated water

1 Protect the heat pump from pool water

1 Connect the equipment and make circulation

NOTE
The types and quantity of the water pipes, valves, filter equipment, sterilizing equipment which used for the swimming pool heating/circulation pipe system, depend on the project design. We suggest not to install auxiliary electric heaters in the system. If must install auxiliary electric heaters, it should be operated by the specialized persons, and our company has no responsibility for all the problem cause by the auxiliary electric heater.
Illustrations of machine

5

2. Attention for safety
Range of application: 1.Power supply: 220~240V/1N~50/60Hz. 2.Environment temperature: -15°C43°C 3.Water temperature range: 8°C~40°C in Heating function
8°C~28°C in Cooling function Confirm the ground connection, if the ground connection is not correctly done, it may cause electric shock. And please cut off the power in the lightning storm weather.
If install the heat pump in a small room, it must keep good ventilation. The main power switch should be out of the reach of Children. Don’t put finger or stick into the air inlet or air outlet as the high-speed rotor may cause injury. When an exception happened (burning smell etc..), turn off the manual power switch immediately and contact with after-sale service department. When the unit needs to be removed or re-installed or repaired, please entrust after-sale service department and specialized personnel to do it. If the installation/ maintainence is not well done, it may cause unit operation failure, electric shock, fire, hurt, leaking, etc. Must not be unauthorized reformed, otherwise it may cause electric shock or fire. Must not install the unit with combustible around. Confirm the installation base is strong enough to avoid falling of the heat pump. Confirm leakage protection switch is installed to avoid electric shock or other issues. When cleaning the unit, the operation should be stopped, and power switch should be turned off.
6

3. Installation of the unit
3.1 Installation Illustration
Above illustration is just for the reference, please take the advice of authorized installers. 3.2 Advised installation space Keep the following indicated space for operation and maintenance when make the installation.
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3.3 Additional By-pass kits The additional By-pass kits is suggested to be put into the piping system to get the better adjustment of water flow.
3.4 Heat pump unit size

Maxinverter13S/17S/21S

A

B

C

D

E

F

G

H

I

J

K

641

896

389

363

128

640

128

107

340

26

11

8

3.5 Heat Pump Exploded View

No.

Parts

No.

Parts

1

Fan protective gill

15

Water flow switch

2

Front panel

16

Titanium heat exchanger

3

Fan blade

17

Right structure

4

Fan motor

18

Manometer

5

Left panel

19

Right panel

6

Left structure

20

Control panel

7

Evaporator

21

Electrical terminal cover

8

Fan motor mount

22

Electrical terminal block

9

Upper structure

23

Electrical cable support

10

Electric box cover

24

Electronic expansion valve

11

Electrical box

25

Reactive resistance

12

Top cover

26

Bottom panel

13

Plastic net

27

Four-way valve

14

Middle panel

28

Compressor

9

3.6 Electrical connection * Suggested power cable specification
Model
Maxinverter13S/17S/21S Maxinverter-30S
Terminal

Power Cable Specification
32.5 mm²
34 mm² Terminal cable max. 4 mm²

• Electrical connection

Position L,N and is for the power connection of our heat pump. Position P1 and P2 is for the Single phase water pump.

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4. Specifications

4.1 Specifications

Model No.

Maxinverter-13S

Maxinverter-17S

Advised pool volume(m³)

20~60

30~80

Heating Capacity at Air 26, Humidity 80%, Water 26 in, 28 out

Heating CapacitykW)

12.83.09

173.88

Maxinverter-21S 50~120
21.24.85

Power InputkW)

2.130.19

COP

16.1~6.8

Heating Capacity at Air 15, Humidity 70%, Water 26 in, 28 out

3.050.24 15.8~6.8

3.960.36 15.8~6.8

Heating CapacitykW)

10.122.29

Power InputkW)

2.10.28

COP

7.6~5

Cooling Capacity at Air 35, Water 29 in, 27 out

Cooling CapacitykW)

7.251.82

Power InputkW)

1.890.26

12.782.89 2.670.33
7.6~4.9
9.472.35 2.510.34

15.913.59 3.850.47
7.6~4.9
11.582.96 3.070.43

EER
Power suply
Rated Power InputkW) Rated Current(A) (Air 15°C /Water 26°C) Compressor Heat Exchanger Casing Material Fan Motor Working temperature range Water Proof Level Refrigerant Refrigerant volume (g)
Water Flow Volumem3/h) Water collection (mm) Net Weight(kg) Gross Weight(kg) Noise at 1 m dB(A) Noise at 10 m dB(A) Net Dimensions (mm) (L x W x H) Package Dimensions (mm) (L x W x H)

6.953.83 2.2 10.2
720 4.5 53 64 40~48 21~29

6.893.78 220~240V/1/50~60Hz
2.6
12
Mitsubishi DC Inverter compressor Screwed titanium tube Rust-free ABS Brushless DC type
-1543
IPX4 R32 850 5.5 50
54 65 41~50 23~31 925364642
990435760

6.873.77 3.4 15
850 6.5 58 69 42~52 24~32

*Above data are subjects to modification without notice.

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5.1 Electric wiring diagram
Maxinverter-13S/17S/21S

5. Electrical wiring

12

6.Instruction of operation
6.1 Wire controller (Function of buttons)
6.2 Definition of display
13

6.3 Start up & Locking

Press the button main interface.

to switch the heat pump on or off. This button is also used to return to the

When the heat pump is in operation, hold the button

for 3 seconds to lock or unlock the

controller. (The lock is activated automatically after 60 seconds of inactivity). When the display is

locked, the logo

appears.

• Please unlock the controller before the other operations every time.

Attention: Before you start, make sure the filtration pump is running and that water is flowing through the heat pump.

6.4 Operation Mode Selected

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Hold the button for 3 seconds to change the below four operating modes each time:
:Mode ECO Inverter: Choose this heating mode that the heat pump operates silently. :Mode Boost Inverter: Choose this heating mode that the heat pump operates powerfully. : Mode Cooling Inverter: Choose this cooling mode that the heat pump intelligently cools the water of your pool. : Mode Auto: The heat pump can switch Heating and Cooling function automatically
6.5 Set the required temp.

On the main interface, press

and

press the

to save the setting.

to adjust the desired water temp. of your pool, then

When setting the water temp., the icon `SET’ will light on, the left one is Setting temp., the right one is the Outlet water temp.

After finished the setting, the icon `SET’ will extinguish, the left one will become Inlet water temp., the right one Outlet water temp.

15

6.6 Clock setting

Press the button to enter the clock setting interface. Clock display on right bottom flashes.

Change the hours using

and

minutes using the

and .

, then press again

to go to minute setting, change the

Press again

to confirm the setting and return to the main menu.

6.7 Timer setting Hold the button for 3 seconds to enter the setting of Timer ON & Timer Off groups.

1

ON

2

3

OFF

will flash, then set the Turn On and Off timer like the Clock setting.

Pay attention: There are 3 groups Timer for your every day setting. You can press to save the current setting and go back to the main interface. Cancel the Timer: Hold the button for 3 seconds to cancel all the timer setting.

6.8 Definition of other icons

: Defrosting

:Compressor

: 4-way va

16

A Fan Speed

: Signal of Water pump

: Wi-Fi function

Attention: With the indication of the functions or key parts, it is helpful for service team to maintain or repair the heat pump.

6.9 Manual defrosting

Hold and

for 3 seconds to start Manual defrosting function.

6.10 Factory setting recovery

Hold and and

and

for 5 seconds to recover factory setting.

6.11 Running Parameter checking

Press

to enter the Running parameters checking, then press

and

to check the

below parameters as below:

N° Description

Unit

C01 Ambient temperature

°C

C02 Evaporator coil temperature

°C

C03 Exhaust temperature

°C

C04 Return temperature

°C

C05 Reserved

°C

17

C06 Reserved

°C

C07 Titanium heat exchanger temperature

°C

C08 Water inlet temperature

°C

C09 Water outlet temperature

°C

C10 Reserved

C11 Reserved

C12 Reserved

C13 Temperature sensor failure

C14 Refrigerant system failure

C15 Inverter driver failure

C16 Device output

C17 Running status

C18 AC voltage

V

C19 DC voltage

V

C20 Actual frequency

Hz

C21 EEV open degree

C22 Reserved

C23 Heat pump current

A

C24 Compressor current

A

C25 DC fan motor1 speed

Rpm

C26 Compressor target frequency

Hz

C27 DC fan motor2 speed

Rpm

C28 Control system software version

C29 Driver software version

C30 Controller software version

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7.Adjusting and Initial operation
7.1 Attention Open the valve of water system, inject water into the system, and exhaust air inside. Do adjustment after electrical safety inspection. After the power is switched on, start the test running of heat pump, to check if it can function well. To avoid dangerous accident, the forced operation is forbidden. 7.2 Preparation Before Adjustment The system is installed correctly. Tubes and lines are putted in the right place. Accessories are installed. Ensure the smooth drainage. Ensure the perfect insulation. Correct connection of ground lead. The supply voltage can meet the requirement of rated voltage. Air inlet and outlet function can work well. Electrical leakage protector can work well. 7.3 Adjustment Process Check if the switch of the controller can work well. Check if the function keys of the controller can work well. Check if the drainage system can work well. Check if the system can work well after starting up. Check if the water outlet temperature is in correct situation. Check if there is vibration or abnormal sound when the system is functioning. Check if the wind, noise and condensate water produced by the system affect the environment around. Check if there is refrigerant leakage. If any Error codes occur, please check the instructions for the detailed info.
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8. Operation and maintenance
8.1 To ensure the well functioning, the system should be checked and maintained after a period of time. During the maintenance, please pay attention to some points below: When you need open the cabinet and make inside inspection, please do cut off the electricity power in advance. To ensure the stable running, please do not adjust any setting. Pay close attention to whether all the operation parameters is normal during system working. Examine regularly whether the electrical connection is loose, if yes, fasten it on time. Examine regularly the reliability of the electrical components, change all the failed or unreliable components on time. The dirt retention on the surface of evaporator fin should be cleaned every 6 months. After long downtime, if we restart the equipment, we should make following preparations: examine and clean the equipment carefully, clean the water pipeline system, examine the water pump, and fasten all the wire connections. Replacement parts must use the original accessories, can not be replaced by other similar accessories.
8.2 Refrigerant filling Examine the refrigerant filling condition through reading the data of gauge, also the air suction and exhaust pressure. If there is leakage or changing components of the refrigeration circulation system, please ask for the assistant of professional technicians. 8.3 Leak detection During leak detection and air tightness experiment, never let the refrigeration system filling oxygen, ethane or other flammable harmful gas, we can only adopt compressed air, fluoride or refrigerant for such experiment. 8.4 Drainage water in heat exchanger If the heat pump will be not used for a long time or in winter season, please do drain the water inside heat exchanger to avoid broken when freezing. 8.5 To remove the compressor, please follow the following steps Turn off the power supply Exhaust the refrigerant from the low pressure end, attention to reduce the exhaust speed, and avoid frozen oil leakage. Remove the compressor air suction and exhausting pipe.
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Remove the compressor power cables. Remove the compressor fixing screws. Remove the compressor. 8.6 Conduct regular maintenance according to the user manual instruction, to make sure the unit running in good condition. Fire prevention: if there is a fire, please turn off the power switch immediately, put the fire out with fire extinguisher. To prevent flammable gas: the unit working environment should stay away from gasoline, ethyl alcohol and other flammable materials, to avoid explosion accident.
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9. Error codes & Solutions

Code Description

Potential reasons

Solutions

Insufficient water flow

Check the water circuit system, the opening of by-pass kits, the running of water pump

E03 Water flow protection

Check the wiring and reconnect water flow Water flow switch disconnected
switch

Water flow switch defective

Change a new one

E04 Antifreeze protection

Ambient/Inlet water temp. is too The unit will be re-started when the low and the unit is on standby ambient/inlet water temp. goes up.

Insufficient water flow

Check the water circuit system, the opening of by-pass kits, the running of water pump

Ambient/ Water temp. is too high

E05 High pressure protection

Fan motor speed is abnormal or fan Check the fan motor
motor has damaged

Excess refrigerant gas

Readjust the refrigerant volume

High pressure switch disconnected Reconnect or replace high pressure switch
or defective

Piping system jammed

Check the piping system

Check the installation circumstance. Clean

Bad ventilation

the evaperator. Check the running situation

of fan.

Low pressure switch disconnected Reconnect or replace low pressure switch
or defective

E06 Low pressure protection

Gas leakage (Check the gauge)

Detect the leakage point and make the maintainence

Fan motor speed is abnormal or fan Check the fan motor
motor has damaged

EEV blocked or piping system jammed

Check the piping system

Bad wire connection

Connection failure between PCB

E09

Defective controller

and controller

Defective PCB

Check the wiring Change a new controller Change a new PCB

Communication failure between Bad wire connection

E10

PCB and driver module

Defective PCB

Check the wiring Change a new PCB

Insufficient water flow

Check the water circuit system/ water flow switch

E12 Exhause temp. too high

Lack of gas Piping system jammed

Check if there is a gas leakage Check the piping system

Exhause piping temp. sensor (Purple connector) detective

Change a new sensor

E15 Inlet water temp. sensor (Blue Sensor disconnected or defective Reconnect or replace sensor

22

connector) failure Outer piping temp. sensor E16 (White connector) failure Exhause piping temp. sensor E18 (Purple connector) failure Ambient temp. sensor (Black E21 connector) failure

Sensor disconnected or defective Sensor disconnected or defective Sensor disconnected or defective

Insufficient water flow

Difference of outlet and inlet E22
water temp. too high

Outlet water temp. sensor (Red connector) failure Inlet water temp. sensor (Blue connector) failure

Insufficient water flow

Overcooling protection under

E23

cooling mode

Outlet water temp. sensor (Red

connector) failure

Outlet water temp. sensor (Red

E27

Sensor disconnected or defective

connector) failure

Suction piping temp. sensor E29
(Yellow connector) failure

Sensor disconnected or defective

Beyond the scope of using temp.

E30 Low ambient temp. protection Ambient temp. sensor (Black

connector) failure

Insufficient water flow

Overheating protection under

E32

heating mode

Outlet water temp. sensor (Red

connector) failure

Ambient/water temp. is too high

Piping temp. too high

E33

under cooling mode

protection under cooling mode

Refrigerant system is abnormal

Bad wire connection for

compressor

E34 Compressor start up failure Wrong phase connection for

compressor

PCB failure

E35 Compressor over current

Power supply is abnormal

E36 Compressor output failure

Wrong phase connection for compressor

Inner piping temp. sensor E42
(Green connector) failure

Sensor disconnected or defective

E46 DC fan motor malfunction

Bad wire connection Fan motor defective

Reconnect or replace sensor
Reconnect or replace sensor
Reconnect or replace sensor Check the water circuit system/ water flow switch Change a new sensor
Change a new sensor Check the water circuit system/ water flow switch Change a new sensor
Reconnect or replace sensor
Reconnect or replace sensor Stop using Change a new sensor Check the water circuit system/ water flow switch Change a new sensor
Check the scope of using Check the piping system Check the wiring
Check the wiring Change a new one Check the power supply Check the wiring
Reconnect or replace sensor Check the wiring of fan motor Change a new fan motor

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10. Wifi-Function
1. Download the Tuya Smart’ App Scan the QR code below to download the mobile APP. Or searchTuya Smart’ in App Store (IOS) or Google play (Android) 2. Sign up for the first time
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3. Press +’ to add a device 4. ChooseOthers’ and `Other Wifi’ on the interface
5. Put your mobile phone close to the pool heat pump, which are under the same Wifi area
25

6. Make sure the device is reset, then enter the WIFI account and password to connect Wifi.

Reset the Wifi function: Hold the

and

and

for 3 seconds.

26

7. Press Confirm’ to start the connection after completing. The device is successfully added if it’s connect, then pressFinish’.
27

8. App Main Interface
9. Functions Remark: The heat pump APP function includes:
Turn On/Off the machine Temperature setting and display Mode Selection Failure status display

Customer Care
If your heat pump does not operate normally, please turn off the unit and cut off the power supply at once, then contact our service center or technical department.

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