AQUA FORTE SC997 Troubleshooting guide

Mini Heat Pump for Swimming Pool
User and Service Manual

Contents
I. Unit Parameters........................................................................................................................................................ 1
II. System Specification...............................................................................................................................................4
1. Specification................................................................................................................................................. 4
2. Unit Dimensions........................................................................................................................................... 5
3. Explosion View............................................................................................................................................. 6
III. Installation Instructions..........................................................................................................................................7
IV. Running Test........................................................................................................................................................... 9
1. Inspection Before Running Test................................................................................................................ 9
2. Control Function Description................................................................................................................... 10
2.1. The buttons of LED wire controller............................................................................................. 10
2.2. Controller display instructions..................................................................................................... 10
2.3. Definition of function keys............................................................................................................ 10
2.4. Reset operation............................................................................................................................. 10
2.5. Parameter checking...................................................................................................................... 10
2.6. Parameter list................................................................................................................................. 11
2.7. Error code....................................................................................................................................... 11
V. Maintenance...........................................................................................................................................................12

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I. Unit Parameters
1. Appearance
2. Statement
To keep users under safe working condition and property safety, please follow the instructions
below.
Wrong operation may result in injury or damage;
Please install the unit in compliance with local laws, regulations and standards;
Confirm power voltage and frequency;
The unit is only used with grounding sockets;
Independent switch must be offered with the unit.
3. The following safety factors need to be considered:
Please read the following warnings before installation;
Be sure to check the details that need attention, including safety factors;
After reading the installation instructions, be sure to save them for future reference.
⚠Warning
Make sure that the unit is installed safely and reliably.
If the unit is not secure or not installed, it may cause damage. The minimum support weight
required for installation is 21g/mm2.

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If the unit was installed in a closed area or limited space, please consider the size of room and
ventilation to prevent suffocation caused by refrigerant leakage.
Use a specific wire and fasten it to terminal block so that the connection will prevent pressure
from being applied to parts.
Wrong wiring will cause fire.
Please connect power wire accurately according to wiring diagram on the manual to avoid burnout of the
unit or fire.
Be sure to use correct material during installing.
Wrong parts or wrong materials may result in fire, electric shock, or falling of the unit.
Install on the ground safely, please read installation instructions.
Improper installation may result in fire, electric shock, falling of the unit, or water leaking.
Use professional tools for doing electrical work.
If power supply capacity is insufficient or circuit is not completed, it may cause fire or electric shock.
The unit must have grounding device.
If power supply does not have grounding device, be sure not to connect the unit.
The unit should be only removed and repaired by professional technician.
Improper movement or maintenance of the unit may cause water leakage, electric shock, or fire. Please
find a professional technician to do.
Don't unplug or plug power during operation.It may cause fire or electric shock.
Don't touch or operate the unit when your hands are wet. It may cause fire or electric shock.
Don't place heaters or other electrical appliances near the power wire.It may cause fire or
electric shock.

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The water must not be poured directly from the unit. Do not let water to permeate into the
electrical components.
4. ⚠Warning
Do not install the unit in a location where there may be flammable gas.
If there is flammable gas around the unit, it will cause explosion.
According to the instruction to carry out drainage system and pipeline work. If drainage system or pipeline
is defective, water leakage will occur. And it should be disposed immediately to prevent other household
products from getting wet and damage.
Do not clean the unit while power is on. Turn off power before cleaning the unit. If not it
may result in injury from a high-speed fan or electric shock.
Stop operating the unit once there is a problem or an fault code.
Please turn off power and stop running the unit. Otherwise it may cause electric shock or fire.
Be careful when the unit is not packed or not installed.
Pay attention to sharp edges and fins of heat exchanger.
After installation or repair, please confirm refrigerant is not leaking.
If refrigerant is not enough, the unit will not work properly.
The installation of external unit must be flat and firm.
Avoid abnormal vibration and noise.
Don’t put your fingers into fan and evaporator.
High speed running fan will result in serious injury.
This device is not designed for people who is physically or mentally weak (including
children) and who does not have experience and knowledge of heating and cooling
system. Unless it is used under direction and supervision of professional technician, or
has received training on the using of this unit. Children must use it under supervision of

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an adult to ensure that they use the unit safely. If power wire is damaged, it must be
replaced by a professional technician to avoid danger.
II. System Specification
1. Specification
Model
SC997
SC998
Test Condition: Ambient 27℃, Inlet/Outlet: 26/28℃, Humidity 80%
Heating Capacity (kW)
3
5
Power Input (kW)
0.57
0.806
COP
5.2
6.2
Test Condition: Ambient 15℃, Inlet/Outlet: 26/28℃, Humidity 70%
Heating Capacity (kW)
2.2
3.68
Power Input (kW)
0.53
0.78
COP
4.1
4.7
General Info
Max Power Input (kW)
0.9
1.5
Max Current (A)
4.1
7.1
Advised Pool Size (m³)
5~15
10~25
Controller
LED Controller
Power Supply
220-240V~/50Hz
Water Temp. Heating Mode (℃)
10~40
Running Ambient Temp. (℃)
5~43
-5~43
Refrigerant
R32
Compressor Type
Rotary
Gas Control
Capillary
Heat Exchanger
Titanium Heat Exchanger
Water Pipe Connection (mm)
32 or 38
Casing Material
ABS
Water Flow (m³/h)
2.0
2.5
Water Pressure Drop (kPa)
10
10
The technical specification of our heat pumps is provided for information purpose only. We reserve
the right to make change without notice in advance.
Calculate according to an in-ground private swimming pool covered with bubble

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2. Unit Dimensions
Unit: mm
Model: SC997
Unit: mm
Model: SC998

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3. Explosion View
1
Fan motor cover
8
Compressor
15
Handle
2
Front plate
9
Titanium tube heat exchanger
16
Back net
3
Fan blade
10
Pipe assembly
17
Top cover
4
Fan motor
11
Power supply waterproof connector
18
Top cover
5
Motor support
12
Water flow switch
19
Pillar
6
Chassis
13
Right plate
20
Wire controller
7
Rubber feet
14
High efficiency finned heat exchanger

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III. Installation Instructions
WARNING: Installation must be carried out by a qualified engineer.
This section is provided for information purpose only and must be checked and adapted if
necessary according to actual installation condition.
1. Pre-Requirements
Needed equipment for installation of heat pump:
Suitable power supply cable for unit’s power.
A by-pass kit and an assembly of PVC tube, stripper, PVC adhesive and sandpaper.
A set of wall plug and expansion screw.
We recommend to use flexible PVC pipe in order to reduce transmission of vibration.
Suitable fastening studs may be used to raise unit.
2. Location
Please comply with the following rules about heat pump location choosing.
1. The unit’s location must be convenient for operation and maintenance in the future.
2. It must be installed and fixed on flat concrete floor. The floor is stable to support the weight of the
unit.
3. A water drainage device must be provided close to the unit in order to protect the area where it is
installed.
4. If necessary, mounting pads could be used to support the weight of unit.
5. Confirm the unit is under well-ventilated condition; air outlet port is not facing to the windows of
nearby buildings and the outlet air can not be returned. In addition, provide enough space around the
unit for repair and maintenance.
6. The unit must not be installed in an area exposed to oil, flammable gases, corrosive products,
sulphurous compounds or close to high frequency equipment.
7. To prevent mud splashes, do not install the unit near road or track.
8. To avoid noise to neighbours, please make sure the unit is installed in less noise sensitivity area
or good sound isolation area.
9. Keep the unit as far as possible away from children.
10. Installation space

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Unit: mm
Anything could not be placed within at least 1m in front of heat pump.
Leave at least 500mm of empty space around the sides and rear of heat pump.
Do not put any stuff on or in front of heat pump!
3. Installation Layout
* The installation diagram is for reference only, please refer to the actual installation situation.

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4. Electrical Connection
Power Supply Wires Size
Model
Power Supply Wires
Electricity Supply
Cable Diameter
Specification
SC997
220-240V~/50Hz
3G 1.5mm²
AWG 14
SC998
3G 1.5mm²
AWG 14
⚠WARNING: Power supply of heat pump must be disconnected before any operation.
Please comply with the following instruction to connect heat pump.
Step 1: Detach electrical side panel by a screwdriver to access electrical terminal block.
Step 2: Insert cable into heat pump unit port.
Step 3: Connect power supply cable to terminal block.
IV. Running Test
1. Inspection Before Running Test
a. Running test can begin after completing all installation;
b. Before running test, confirm below items and write √ in block;
● Correct unit installation □ ● Power supply voltage is the same as unit rated voltage □
● Correct piping and wiring □ ● Air inlet & outlet port of unit is unblocked □
● Drainage and venting is unblocked and no water leaking □
● Leakage protector is working □
● Piping insulation is working □ ● Ground wire is connected correctly □
c. All wiring and piping should be connected well and carefully checked, then fill water tank with water
before power is switched on;
d. Emptying all air within pipes and water tank, press “on-off” button on control panel to run the unit at
setting temperature;
e. Items need to be checked during running test:
During the first running, unit current is normal or not;
Each function button on control panel is normal or not;
Display screen is normal or not;
Are there any leakage in the whole heating circulation system ;

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Condensate drain is normal or not;
Are there any abnormal sound or vibration during running.
2. Control Function Description
2.1. The buttons of LED wire controller
2.2. Controller display instructions
The red light lights up when heating mode
The green light flashes when defrosting
2.3. Definition of function keys
2.3.1 " " key
Under the main interface, press this button to turn on or off the heat pump.
Under the parameter checking interface, press this button to return to the main interface.
2.3.2 "▲" and "▼" key
Under the main interface, press keys to adjust the current target water temperature.
Combine with “M” to set parameters.
2.3.3 "M" key
Press "M" key for 5 seconds to check the parameters. Press "▲" and "▼" to turn the pages to check
different parameters.
Press "M" key under the parameter-checking status to enter the enter the status of parameters
setting. Press "▲" and "▼" to change the parameter value. Press "M" button to confirm the
parameter value and return to the parameter-checking status.
In shutdown state, long press this button for 5 seconds to switch between Fahrenheit and Celsius.
When the switch is completed, the corresponding temperature mode will be displayed on the main
interface for 3 seconds (Fahrenheit shows F, Celsius shows C).
2.4. Reset operation
When pressing the "M" key + " " key for 10 seconds, the parameter values can be recover to
default values.
2.5. Parameter checking
Press the "Ml" button for 5 seconds to check the parameters. And you can press "▲" and "▼" to turn
the pages to check different parameters.

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2.6. Parameter list
Parameter
Description
Range
Default Value
Remarks
A
Inlet water temperature
-19~99℃
Measured
b
Coil temperature
-19～99℃
Measured
c
Ambient temperature
-19～99℃
Measured
d
Inlet water temperature setting value
when heating
15℃～40℃
27℃(81℉)
Adjustable
E
Interval time of defrosting
10～80Min
40 Min
Adjustable
F
Exit time of defrosting
5～30Min
6 Min
Adjustable
H
Heat pump restart temperature difference
1℃～10℃
2℃(4℉)
Adjustable
J
Power off protection
0～1
1（Yes）
Adjustable
O
Ambient temperature of antifreeze
protection
0℃～15℃
5℃(41℉)
Adjustable
P
Coil temperature of entering defrosting
-19℃～0℃
-3℃(27℉)
Adjustable
U
Coil temperature of exiting defrosting
1℃～30℃
2℃(36℉)
Adjustable
t
Inlet water temperature of anti-freezing
(Reservation)
1℃～15℃
4℃
Adjustable
2.7. Error code
Malfunction
Code
Inlet water temperature sensor’s fault
P 1
Coil temperature sensor’s fault
P 3
Ambient temperature sensor’s fault
P 5
Super-cooling protection for outlet water
P 7
Low pressure protection fault
E 6
Water flow protection fault
E 7
Defrost
Defrosting indicator (Green light)

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V. Maintenance
You should check the water supply system regularly to avoid the air entering into water
system and occurrence of low water flow, it would reduce the performance and reliability of
the heat pump.
Clean your pools and filtration system regularly to avoid the damage of the unit because of a
dirty or clogged filter.
Discharge the water from the bottom of the water pump if the heat pump will stop running for
a long time (specially in winter).
On any other moment, check the water flow to confirm there is enough water before the unit
starts to run again.
After the unit is conditioned in winter, it is preferred to cover the unit with the special winter
heat pump cover.

106-10018-380