Astrapool 71245 Troubleshooting guide

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MINI HEATER
User and Service manual

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Mini Heater
User and Service manual
INDEX
1. Specifications
2. Dimension
3. Installation and connection
4. Electrical Wiring
5. Display Controller Operation
6. Exploded Diagram
7. Maintenance
Thank you for using Mini Heater for your pool heating, it will heat your pool water and keep the constant
temperature when the air ambient temperature is above 12 ℃
ATTENTION: This manual includes all the necessary information with the use and the installation of your
heat pump.
The installer must read the manual and attentively follow the instructions in implementation and maintenance.
The installer is responsible for the installation of the product and should follow all the instructions of the
manufacturer and the regulations in application. Incorrect installation against the manual implies the exclusion of
the entire guarantee.
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.
WARNING: Please always keep the heat pump in the ventilation place and away from anything which could cause
fire.
WARNING: Don’t weld the pipe if there is refrigerant inside machine. Please keep the machine out of the confined
space when make gas filling.
WARNING: 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, your
warranty will be lost.
WARNING: Please always cut the power supply if you want to open the cabinet to reach inside the heat pump,
because there is high voltage electricity inside.
WARNING: Please well keep the display controller in a dry area to protect the display controller from being
damaged by humidity.

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1. Specifications
1.1 Technical data pool heat pumps
Item
71245
71258
71606
Air 28℃, Water 28℃, Humidity 80%
Heat Output (kW)
kW
2.5
4.2
5.5
Power Consumption (kW)
kW
0.59
1
1.31
COP
4.2
4.2
4.2
Air 15℃, Water 26℃, Humidity 70%
Heat Output (kW)
kW
1.9
3.2
4.2
Power Consumption (kW)
kW
0.56
0.91
1.2
COP
3.4
3.5
3.5
Voltage
220-240V~50Hz/1PH
Rated Current
A
2.6
4.4
5.8
Fuse Current
A
7.5
13
16
Advised Pool Volume
m³
0-10
5-16
10-20
(with pool cover)
Advised water flux
m3/h
2
2
2.5-3.2
Water Pressure Drop
KPa
15
15
15
Condenser
Titanium exchanger in PVC
Water Pipe in-out
mm
38/32
Fan Speed
RPM
2500
1100
1100
Noise Level(10m)
dB(A)
48
46
46
Noise Level(1m)
dB(A)
57
55
55
Refrigerant Type
R32
Net Weight
kg
18
26
26
Gross Weight
kg
19
28.5
28.5
Net Dimension
mm
310*356.5*375
434*432.5*460
434*432.5*460
Packing Dimension
mm
360*415*413
475*475*500
475*475*500
* Above data are subjects to modification without notice.

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2. Dimension (mm)
Item
A
B
C
D
E
F
G
71245
103
103
51
375
310
300
356.5
71258/71606
131.5
168
50.7
460
434
371
432.5

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3. Installation and connection
3.1 Notes
The factory supplies only the heat pump. All other components, must be provided by the user or the installer.
Install a bypass if the water flow from the swimming pool pump is more than 20% greater than the allowable flow
through the heat exchanger of the heat pump.
Always place the heat pump on a solid foundation and use the included rubber mounts to avoid vibration and
noise.
Always hold the heat pump upright. If the unit has been held at an angle, wait at least 24 hours before starting the
heat pump.
3.2 Heat pump location
The unit will work properly in any desired location as long as the following three items are present:
1. Fresh air – 2. Electricity – 3. Swimming pool filters
The unit may be installed in virtually any outdoor location as long as the specified minimum distances to other
objects are maintained (see drawing below). Please consult your installer for installation with an indoor pool.
Installation in a windy location does not present any problem at all, unlike the situation with a gas heater (including
pilot flame problems).
ATTENTION: Never install the unit in a closed room with a limited air volume in which the air expelled from the unit
will be reused, or close to shrubbery that could block the air inlet. Such locations impair the continuous supply of
fresh air, resulting in reduced efficiency and possibly preventing sufficient heat output.
See the drawing below for minimum dimensions.
3.3 Distance from your swimming pool
The heat pump is normally installed within a perimeter area extending 7.5 m from the swimming pool. The greater
the distance from the pool, the greater the heat loss in the pipes. As the pipes are mostly underground, the heat
loss is low for distances up to 30 m (15 m from and to the pump; 30 m in total) unless the ground is wet or the
groundwater level is high. A rough estimate of the heat loss per 30 m is 0.6 kWh (2,000 BTU) for every 5 ºC
difference between the water temperature in the pool and the temperature of the soil surrounding the pipe. This
increases the operating time by 3% to 5%.

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3.4 Check-valve installation
Note: If automatic dosing equipment for chlorine and acidity (pH) is used, it is essential to protect the heat pump
against excessively high chemical concentrations which may corrode the heat exchanger. For this reason, equipment
of this sort must always be fitted in the piping on the downstream side of the heat pump, and it is recommended to
install a check-valve to prevent reverse flow in the absence of water circulation.
Damage to the heat pump caused by failure to observe this instruction is not covered by the warranty.
3.5 Electrical connection
Note: Although the heat pump is electrically isolated from the rest of the swimming pool system, this only
prevents the flow of electrical current to or from the water in the pool. Earthing is still required for protection
against short-circuits inside the unit. Always provide a good earth connection.
Before connecting the unit, verify that the supply voltage matches the operating voltage of the heat pump.
The RCD plug has been included with power cable, which can offer electrical protection.
3.6 Initial operation
Note: In order to heat the water in the pool (or hot tub), the filter pump must be running to cause the water to
circulate through the heat pump. The heat pump will not start up if the water is not circulating.
After all connections have been made and checked, carry out the following procedure:
1. Switch on the filter pump. Check for leaks and verify that water is flowing from and to the swimming pool.
2. Connect power to the heat pump, the unit will start up after the time delay expires .
3. After a few minutes, check whether the air blowing out of the unit is cooler.
4. When turn off the filter pump , the unit should also turn off automatically , if not, then adjust the flow switch.
Time delay - The heat pump has a built-in 3-minute start-up delay to protect the circuitry and avoid excessive
contact wear. The unit will restart automatically after this time delay expires. Even a brief power interruption will
trigger this time delay and prevent the unit from restarting immediately. Additional power interruptions during this
delay period do not affect the 3-minute duration of the delay.
3.7 Condensation
The air drawn into the heat pump is strongly cooled by the operation of the heat pump for heating the pool water,
which may cause condensation on the fins of the evaporator. The amount of condensation may be as much as
several liters per hour at high relative humidity. This is sometimes mistakenly regarded as a water leak.

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4. Electrical Wiring
4.1 SWIMMING POOL HEAT PUMP WIRING DIADRAM
71245

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71258/71606
NOTE:
(1)Above electrical wiring diagram only for your reference, please subject machine posted the wiring diagram.
(2)The swimming pool heat pump must be connected ground wire well, although the unit heat exchanger is
electrically isolated from the rest of the unit .Grounding the unit is still required to protect you against short circuits
inside the unit .Bonding is also required.

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5. Display Controller Operation
5.1 The buttons of LED wire controller
5.2 When the heat pump is running, the LED display shows the water inlet temperature.
LED 1 is on when compressor is running.
LED 2 is on if trouble.
5.3 Turn on/off the heat pump
Press to turn on the heat pump, the LED display shows the water setting temperature for 5s, then show
water inlet temperature.
press again to turn off the heat pump.
5.4 Set the water temperature
Press or directly to adjust water temperature (range:.10—42℃)
Press to save the setting then exit.
5.5 parameter checking
Press ，it will enter the parameter checking, Press or to choose the code d0/d1,，press
again, it will show the measured value. Lastly press to save the setting then exit.
5.6 Trouble shooting.
Malfunction
Code
Reason
Solution
Low ambient temperature
protection
P0
Ambient temperature is too
low
Can be used only when the
ambient temperature rises
Water temperature sensor
failure
P1
Water temperature sensor
open circuit or short circuit
Replace water temperature
sensor
Ambient temperature
sensor
P2
Ambient temperature sensor
open circuit or short circuit
Replace ambient temperature
sensor
Low pressure switch alarm
EL
Low pressure switch
disconnected
Performance failure, should be
done by the professional
Parameter
Code
Unit
range
Remark
Ambient temperature
d0
℃
0—99
It will flash and show oU if out of range
Water temperature
d1
℃
0—99
It will flash and show oU if out of range

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6.Exploded Diagram
71245
No.
Spare parts
No.
Spare parts
1
Top cover
15
Front panel
2
Pillar
16
Base
3
Ambient temp. sensor
17
Titanium exchanger
4
Transition tube
18
Coupling tube
5
Gas collecting pipe
19
Water in temp. sensor
6
Capillary
20
Globe valve panel
7
Electric box
21
Gas collecting pipe
8
Clip
22
Global valve
9
Compressor capacitance
23
Transition tube
10
Fan motor top plate
24
Gas return piping
11
Controller
25
Low pressure switch
12
Front grill
26
Globe valve capillary
13
Power cord buckle
27
Compressor
14
Fan motor assembly
28
Evaporator

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71258/71606
No.
Spare parts
No.
Spare parts
1
Pillar
15
Power cord buckle
2
Top cover
16
Base
3
Evaporator
17
Titanium exchanger
4
Ambient temp. sensor
18
Water in temp. sensor
5
Electric box
19
Global valve
6
Fan capacitor
20
Gas collecting pipe
7
Capillary
21
Globe valve panel
8
Controller
22
Transition tube
9
Clip
23
Globe valve capillary
10
Compressor capacitance
24
Low pressure switch
11
Front panel
25
Gas return piping
12
Motor
26
Exhaust pipe
13
Fan motor assembly
27
Transition tube
14
Front grill

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7. Maintenance
(1) You should check the water supply system regularly to avoid the air entering the system and occurrence of low
water flow, because it would reduce the performance and reliability of HP unit.
(2) Clean your pools and filtration system regularly to avoid the damage of the unit as a result of the dirty of
clogged filter.
(3) You should discharge the water from bottom of water pump if HP unit will stop running for a long time
(especially during the winter season).
(4) In another way, you should check the unit is water fully before the unit start to run again.
(5) After the unit is conditioned for the winter season, it is recommended to cover the heat pump with special
winter cover.
(6) When the unit is running, there is all the time a little water discharge under the unit.
(7) The pipe must be vacuumed before filling R32 gas from the shut off valve inside machine.
(8) Action of filling gas must be conducted by professional with R32 operating license.

A0158MHS03