IQ Theratherm Inverter Series Troubleshooting guide

Swimming Pool Heat Pump
User and Service Manual

1 A Division of:
Swimming Pool Heat Pump
User and Service Manual
INDEX
1. Specifications
2. Dimensions
3. Installation and connection
4. Accessories
5. Electrical wiring
6. Display controller operation
7. Troubleshooting
8. Exploded diagram
9. Maintenance
10. Warranty
11. Wifi instruction
Thank you for using Theratherm swimming pool heat pump for your pool heating, it will heat your pool water and
keep the constant temperature when the air ambient temperature is at -12 to 43℃
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 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 by an incorrect installation that do not follow the
manual guidelines.
WARNING:
1. Please always keep the heat pump in a well ventilated place and away from anything which could cause fire.
2. Don’t weld the pipe if there is refrigerant inside the unit. Please keep the heat pump out of a confined space when
re-gassing.
3. Please always empty the water out of the heat pump during winter time, or when the ambient temperature drops
below 0℃. Or the Titanium exchanger will be damaged because of being frozen, in such case, your warranty will
be lost.
4. 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.
5. Please keep the display controller in a dry area, or close to the insulation cover, to protect the display controller
from being damaged by humidity.

2 A Division of:
1. Specifications
1.1 Technical data
Model
Theratherm 17iv
Theratherm 30iv
* Performance at Air 28℃, Water 28℃, Humidity 80%
Heating capacity
kW
16-3.8
28.5-6.8
Power consumption
kW
2.67-0.23
4.75-0.43
C.O.P.
16-6
16-6
* Performance at Air 15℃, Water 26℃, Humidity 70%
Heating capacity
kW
11.2-3
19.6-5.6
Power consumption
kW
2.43-0.42
4.26-0.78
C.O.P.
7.2-4.6
7.2-4.6
Compressor type
Inverter Compressor
Voltage
220~240V / 50Hz or 60Hz /1PH
Rated current
A
11.8
21.0
Minimum fuse
A
20
32
Advised pool volume
(with pool cover)
m³
25-85
75-180
Advised water flow
lpm
76.7
166.7
Water pressure drop
Kpa
15
25
Heat exchanger
Twist-titanium tube in PVC
Water connection
48.3mm
Fan quantity
1
1
Ventilation type
Horizontal
Fan speed
550-850
450-600
Power input of Fan
W
10-120
Noise level(10m)
dB(A)
/
/
Noise level(1m)
dB(A)
41-54
42-60
Refrigerant
R410A
Net weight
kg
98
130
Gross weight
kg
113
148
Net dimension
mm
600*663*948
700*750*1152
Packing dimension
mm
650*715*1095
810*750*1295
* Above data are subjects to modification without notice.

3 A Division of:
2. Dimension (mm)
Model Theratherm 17iv

4 A Division of:
Model Theratherm 30iv

5 A Division of:
3. Installation and connection
3.1 Notes
Theralux supplies only the heat pump itself. All other components, including a bypass if necessary, must be provided
by the user or the installer.
Attention:
Please observe the following rules when installing the heat pump:
1. Any dosing of chemicals must take place in the piping located downstream from the heat pump.
2. Install a bypass in all installations.
3. Always place the heat pump on a solid foundation and use the included rubber mounts to avoid vibration
and noise.
4. Always keep 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

6 A Division of:
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%.
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 Typical arrangement
Note: This arrangement is only an illustrative example.

7 A Division of:
3.6 Adjusting the bypass
Use the following procedure to adjust the
bypass:
1. Open Valve 1 & 2 half way.
2. Close valve 2 until control shows
NO Or EE3 screen.
3. Slowly open Valve 2 until pool
Temp shows on screen.
4. If it shows ‘ON’ or ‘EE3’ on display,
it means the water flow into heat
pump is not enough, then you
need adjust the valves to increase
the water flow through the heat
pump.
Must not have Valves open Full.
How to get the optimum water flow:
Please turn on the heat pump under heating function, firstly close the by-pass then open it slowly to start the heat
pump (the heat pump can't start running when the water flow is insufficient).
Continue to adjust the by-pass, at the meantime to check the Inlet water temp. & Outlet water temp, it will be
optimum when the difference is around 2 degrees.
3.7 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. It is
recommended to connect the heat pump to a circuit with its own fuse or circuit breaker and to use the appropriate
wiring.
Connect the electrical wires to the terminal block marked ‘ POWER SUPPLY ’.
A second terminal block marked ‘WATER PUMP ’ is located next to the first one. The filter pump (max. 5 A / 240 V)
can be connected to the second terminal block here. This allows the filter pump operation to be controlled by the
heat pump.
3.8 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 and press the On/Off button on the electronic control panel. The unit will
start up after the time delay.
Out
Heat
Pump
To
pool

8 A Division of:
3. After a few minutes, check whether the air blowing out of the unit is cooler.
4. When the filter pump is turned off, the unit should also turn off automatically, if not, then adjust the flow switch.
Depending on the initial temperature of the water in the swimming pool and the air temperature, it may take several
days to heat the water to the desired temperature. A good swimming pool cover can dramatically reduce the required
length of time.
Water Flow Switch:
It is equipped with a flow switch for protecting the HP unit running with adequate water flow rate. It will turn on when
the pool pump runs and shut it off when the pump shuts off. If the pool water level is higher than 1 m above or below
the heat pump’s automatic adjustment knob, your dealer may need to adjust its initial start-up.
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.
3.9 Condensation
The air drawn into the heat pump is cooled by the operation of the heat pump to heat the pool water, which may
cause condensation on the fins of the evaporator. The amount of condensation may be as much as several litres per
hour at high relative humidity. This is sometimes mistakenly regarded as a water leak.
3.10 Operating modes for optimal use
POWER: Used primarily at the beginning of the season because this mode allows for very rapid temperature rise.
SMART: The heat pump has completed its primary task, in this mode; the heat pump is in a position to maintain the
pool water in an energy efficient manner. By automatically adjusting speed of compressor and fan the heat pump
delivers a higher efficiency.
SILENT: In the summer months when the heat output is minimal required, the heat pump in this mode is even more
economic. Added benefit; when the heat pump heats. It does so with minimal noise.

9 A Division of:
4. Accessories
4.1 Accessories list
Anti-vibration base, 4 pcs
Draining jet, 2 pcs
Water drainage pipes, 2 pcs
4.2 Accessories Installation
Anti-vibration bases
1. Take out 4 Anti-vibration bases
2. Put them one by one on the bottom of
machine like the picture.
Draining jet
1. Install the draining jet under the
bottom panel
2. Connect with a water pipe to drain out
the water.
Note: Lift the heat pump to install the jet.
Never overturn the heat pump, it could
damage the compressor.

10 A Division of:
Water Inlet & outlet junction
1. Use the pipe tape to connect the
water Inlet & outlet junction onto the
heat pump
2. Install the two joints like the picture
shows
3. Screw them onto the water Inlet &
outlet junction
Cable wiring
1. Connect the power supply wire
through the white hole like the picture
shows.
2. Fix the other side on joints inside the
electric box.
Dry contact timer connection
Timer

11 A Division of:
Dry contact pump connection

12 A Division of:

13 A Division of:
5. Electrical Wiring
5.1 SWIMMING POOL HEAT PUMP WIRING DIADRAM
Theratherm 17iv

14 A Division of:
Theratherm 30iv
NOTE:
(1)Above electrical wiring diagram for your reference.
(2)The swimming pool heat pump must be connected earthed, although the unit heat exchanger is electrically isolated
from the rest of the unit. Grounding the unit is still required to protect against short circuits inside the unit. Bonding
is also required.
(3)It is recommended that your pool filtration pump and your heat pump are wired independently.
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 heat pumps. It prevents
remotely-energizing unattended equipment and permitsturning off power at the unit, while the unit is being serviced.

15 A Division of:
5.2 Installation of the display
Photo(1) Photo(2) Photo(3) Photo(4) Photo(5)
-The side with plug connects with the control panel (photo 1)
-The other side of the signal wire. (photo 2)
-Open the wiring panel and put the side without plug through the electrical box. (photo 3, 4)
-Insert the wiring into the designated position (code:COM 1 or COM-L) on the PC board. (photo 5)

16 A Division of:
6. Display Controller Operation
6.1 Guide for operation
6.2 The keys and their operations
6.2.1 button
Press to start the heat pump unit.
Press to stop the heat pump unit.
6.2.2 and button
Water temperature setting:
Press or to set the water temperature directly.
Press and at the same time to check water in temperature, water out temperature and set
temperature.
6.2.3 button
Press to change the working mode, Powerful, silent and smart. The default mode is smart mode.

17 A Division of:
6.2.4 button
Press for 2 seconds to enter secondary page.
Press and to select the functions and press to enter.
6.2.5 Heating/Cooling/Auto mode
Select and press to enter, press and to choose Heating/ Cooling/ Auto mode, press
again to exit. The default mode is Heating mode.
Working mode
Set temperature range
Heating/Auto
6-41℃
Cooling
6-35℃
Logic of auto mode
T1=Water inlet temperature /Tset= set temperature=28℃
NO
Condition
Current
working Status
Water inlet Temperature
Working mode
1
When the heat pump starts
Startup
T1≤27℃
Heating mode
When the heat pump is
running
Heating mode
T1≥29℃, last for 3 minutes
Standby
Standby
T1≥30℃
It switches to cooling mode
Cooling mode
T1=28℃, last for 3 minutes
Standby
Standby
T1≤27℃, last for 3 minutes
It switches to heating mode
2
When the heat pump starts
Startup
27℃<T1≤29℃
Heating mode
When the heat pump is
running
Heating mode
T1≥29℃, last for 3 minutes
Standby
Standby
T1≥30℃
It switches to cooling mode
Cooling mode
T1=28℃, last for 3 minutes
Standby

18 A Division of:
Standby
T1≤27℃, last for 3 minutes
It switches to heating mode
6.2.6 Parameter checking
Select and press to enter, press and to check d0-d11 value.
Code
Condition
Scope
Remark
d0
IPM mould temperature
0-120℃
Real testing value
d1
Inlet water temp.
-9℃～99℃
Real testing value
d2
Outlet water temp.
-9℃～99℃
Real testing value
d3
Ambient temp.
-30℃～70℃
flash if Real value<-9
d4
Frequency limitation code
0,1,2,4,8,16
Real testing value
d5
Piping temp.
-30℃～70℃
flash if Real value<-9
d6
Gas exhaust temperature
0℃～C5℃(125℃)
Real testing value
d7
Step of EEV
0～99
N*5
d8
Compressor running frequency
0～99Hz
Real testing value
d9
Compressor current
0～30A
Real testing value
d10
Current fan speed
0-1200 (rpm)
Real testing value
d11
Error code for last time
All error code
Remark:
d4: Frequency limitation code,