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SWIMMING POOL
HEAT PUMPModel SPHP19II
(380V/60HZ, three phase)
INSTALLATION
OPERATION
MAINTENANCE
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THIS MANUAL MUST BE READ AND
UNDERSTAND BY A QUAL IFIED PERSON OR
PERSONS BEFORE INSTALLATION.
CONTENT
1. Introduction-------------------------------------------------------------------------------- 2
1.1 Heat Pump Technology ---------------------------------------------------------21.2 Heat Pump Features-------------------------------------------------------------3
2. Safety Precautions ----------------------------------------------------------------------3
2.1 General -----------------------------------------------------------------------------4
2.2 Transportation and Storage ---------------------------------------------------4
3. Installation -------------------------------------------------------------------------------- 4
3.1 Remarks----------------------------------------------------------------------------4
3.2 Technical Data --------------------------------------------------------------------5
3.3 Dimensions-------------------------------------------------------------------------6
3.4 Location of the Heat Pump -----------------------------------------------------73.5 Pool/Pond Connection Diagram ----------------------------------------------8
3.6 Electric Hook-Up ------------------------------------------------------------------8
3.7 Condensation ----------------------------------------------------------------------9
3.8 First Time Start-Up ----------------------------------------------------------------9
4. Operating Illustration --------------------------------------------------------------------10
4.1 The Explain for the Interface and Key-Press ------------------------------10
4.2 Operation Explanation -----------------------------------------------------------10
4.3 Parameter settings and inquiries----------------------------------------------12
5. Maintenance and inspection -----------------------------------------------------------15
5.1 The preparation work before the test running------------------------------15
5.2 Testing running---------------------------------------------------------------------16
5.3 Maintenance -----------------------------------------------------------------------16
5.4 Common Faults and debugging------------------------------------------------17
5.5. Electrical wiring diagram--------------------------------------------------------19
5.6. Note for electrical wiring--------------------------------------------------------20
6. Warranty services-------------------------------------------------------------------------20
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INTRODUCTION
1. Introduc tion
Thank you for purchasing our reversible heat pump water heater for your
Swimming Pool/Pond. Our heat pump was produced in accordance with the
current European Standard and it is now ready to be used. Please read this
manual carefully before install the heat pump, otherwise it may lead to damage
to the heat pump or may injure operators as well as cause financial loss.
The heat pump should be installed by a professionals or qualified technicians.
1.1 Heat Pump Technology
Heat pumps utilize the sun's free heat by collecting and absorbing energy
from the outside air. This energy is then compressed and transferred to the
pool/pond water. Your existing water pump circulates the water through the
heater, usually next to the pool equipment, and the water warms up.
The unit contains a fan that draws in outside air and directs it over the
surface of the EVAPORATOR (energy collector).The liquid refrigerant within
the EVAPORATOR coil absorbs the heat from the outside air becomes a
gas.
The warm gas in the coil passes through the COMPRESSOR concentrating
and increasing the heat to form a very hot gas which then passes to the
CONDENSER (water heat exchanger).It is here that the heat exchange
occurs as the hot gas gives off heat to the cool swimming pool water
circulating through the coil. The pool water becomes warmer, and the hot
gas cooling as it flows through the CONDENSER coil returns to its liquid
form and, after passing on through the CAPILLARY TUBE the whole process
begins again.
The state of the heat pump technology can efficiently collect heat from the
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SAFETY PRECAUTIONSoutside air down to the 7 to 10 range. For tropic and subtropical climates,
this means that the pool can be maintained at 26 to 32 .
1.2 Heat Pump Features
►High Efficiency
With a COP value up to 6.0 our heat pumps are very efficient when transferring
heat from the air to the swimming pool water.With the DC Inverter technology
and heat pump technology, you can save as much as 80% of cost compared to
an electrical heater.
►Long Life-SpanThe heat exchanger is made of PVC & Titanium tube, which can withstand and
prolong exposure to swimming pool/pond water
►Easy Control and Operation
The unit is very easy to operate: simply switch it on and set the desired pool
water temperature.
The system includes a micro-computer controller, allowing all operation
parameters to be set. Operation status can be displayed on the controller with
LCD display.
2. Safety Precaution s
2.1 General
1) Before install the heat pump, please confirm the local power supply is in
accordance with the requirement of the heat pump, refer to the Technicaldata and the Wiring diagram provided in this manual.
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SAFETY PRECAUTIONS
2) Connecting the heat pump to a ground wire is necessary, in order to
prevent electrical shock caused by an unexpected short circuit inside unit.
3) Please install electrical protection devices according to local regulations.4) The unit must be installed on reliable base or supporting framework.
5) If the unit is to be installed on the floor, its base or supporting framework
should be heightened, to avoid ingression of accumulated water in rainy
season. In snowy areas, it is important to prevent accumulated snow from
blocking up the air-out. The recommended height is 20cm to 30cm.
6) Install the drainage pipe before fix the heat pump to the ground. There are
two drainage hole on the heat pump base, which could be connected to
the drainage pipe with a pipe arches which contains in spareparts.
7) Drain ditch or other facilities should be arranged under the heat pump, to
avoid the environment influence because of water discharge.8) Ensure the unit is well ventilated, direction of air exhaust is kept away
from windows of neighboring buildings, and the exhaust air cannot flow
back.
Moreover, adequate service clearance should be kept around the unit.
9) DO NOT put fingers or sticks into the ventilative fan.
10)The unit should not be installed at places accompanied with oil,
inflammable gas, corrosive components e.g. sulfur compound, or
high-frequency equipment.
11) The heat pump is usually placed next to a house, which gives a directedsound distribution that should be considered, so it should take proper
action to reduce the noise impact.
12) Cut off the power supply before maintaining the unit, and the maintenance
work should be carried out by professional.
13) If any abnormity occurs in the heat pump, such as abnormal noise or
burned smell, cut off the power supply immediately, and contact
professionals for check and repair.
14) Clean the heat pump with follow instructions:
►Before cleaning, cut off power supply firstly to avoid potential danger.
►Don't rinse the unit by water because it may lead to electric shock.
2.2 Transportation and Storage
The heat pump MUST be transported and stored VERTICALLY!
3. Installation
3.1 Remarks
►The factory only provides the heat pump unit the other parts including a
contingent by pass are to be provided by the user or the installer.►Connect the drainage pipe with a pipe arches which contains in spare
parts to heat bottom base of the heat pump before install the heat pump
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INSTALLATION3.2 Technical Data
When unit power off , open the drain valve , drain out all the water in heat exchanger to
avoid freezing and cracking (With automatic anti-freezing function , when unit is standby)
Model SPHP19II
Rated heating capacity(KW) 20KW
Rated produce hot water capacity (L/h) 1322L/h
Rated outlet water temperature(℃) 28
Max outlet water temperature(℃) 35
Electricity
parameter
Rated power (KW) 4KW
Rated Current (A) 7.15A
Maximum power (KW) 5.8KW
Maximum-current(A) 10.36A
Refrigerant (R22) 2900g
Unit Dimenstions L(mm) 772 x 686 x 938mm
Power Supply 380V~3N/60HZ
Heat exchanger
Type PVC & Titanium tube
Pipe specification DN50
Circulating water flow
(M3/h)≥8.6
Water pressure drop ≤ 50KPa
Unit control type Microcomputer central processor (line control)
Water side Max. pressure-bearing 0.8Mpa
Air Outlet Side Max. Working Pressure 2.8Mpa
Air Inlet Side Max. Working Pressure 0.7Mpa
Waterproof Grade IPX4
Electric Shock Protection Type I
Fan Type External rotor motor Alloy Blades
Unit Control Microcomputer central processor ( line control )
Protection function
High pressure protection、Low pressure protection 、
Anti-phase/Open phase protection、Water flow switch 、
Freeze protection
Suit Environment temperature (℃) -10 ~ 43
Unit weight(Kg) 160
Noise dB(A) ≤60
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INSTALLATION3.3 Dimensions
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INSTALLATION
3.4 Location of the Heat Pump
The unit will perform well on any location provided three factors are present:
Fresh air - Electricity - Pool fi lter piping
The unit may be installed virtually anywhere outdoors providing minimum
distance requirements are met with respect to other objects (see diagram
below).
For indoor pools please consult your installer.
If the unit is placed in a windy area, no problems occur with e.g. the pilot light,
as opposed to what is often the case with gas heaters.
At tent io n: Do not place the unit in an enclosed area with a limited air volumewhere the unit's discharged air will be re-circulatedor near shrubs that could
block the air inlet. These locations deny the unit a continuous fresh air supply,
which reduces its efficiency and may prevent adequate heat yield.
See diagram below for minimum required
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INSTALLATION3.5 Pool/Pond Connection Diagram
(Just for reference, can adapt according to reality.)
3.6 Electric Hook-Up
Although the heat pump is electrically isolated from the rest of the unit, this only prevents
the passage of electricity to or from the pool/pond water. Grounding the unit is still
required to protect yourself from short circuits inside the unit. Make for adequate groundconnection.Check if the electrical mains voltage corresponds with the operating voltage of
the heat pump prior to hooking up the unit.
Note:
1. Customer could choose to use the Gang Switch and Electrical Heating. If not
needed, just leave it free without connecting.
2. For Interlock Switch, please make sure it is connected, otherwise the compressor
will not start. (Before leaving our factory, we have short connected it. Leave it like
this if you do not need to use it.)
3. If need electrical heating, and with power larger than 1KW, please do not connect
the electrical heating directly to PCB controller, but should be controlled by a A.C.
contactor.
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INSTALLATION3.7 Condensatio n
When the swimming pool water is being heated by the heat pump, the
incoming air is cooled down quite a bit, which can cause condensation on the
fins of the evaporator. Condensed volumes can attain several liters per hour under high atmospheric humidity. Sometimes, this is wrongfully interpreted as
a water leak.
3.8 First Time Start-Up
When all connections have been made and checked, you should follow these
steps:
1)Turn on the filter pump. Check for leaks and verify flow to and from the pool
2)Turn on the electrical power supply to the uni, then press the ON/OFF key on
the electronic control panel. The unit should start when the time delay period
has lapsed3)When the unit has been running for a couple of minutes, check if the air
leaving the unit is cooler.
4)Check the performance of the flow switch as follows: with the unit running,
turn the filter pump off. The unit should also switch off automatically. If not, the
flow switch must be readjusted.
5)All the unit and filter pump to run 24 hours a day until the desired pool water
temperature is reached.When the set temperature is reached, the unit
switches itself off. The unit will now automatically restart as long as your filter
pump is running) when the temperature of the pool water experiences a dropof more than 1°C below the set temperature.
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OPERATION
4. Operating Illustration
4.1 The explain for the Interface and Key-Press
4.2 Operation Explanation
With the operation panel on power, the buzzer sounding, the monitor display,
and its back light brightening slight, the feel touch keys are locked and be
invalid with touching any keys of it.
4.2.1 Lock moving
With your fingers touching the "Power" key approximately 3 seconds and
removing it until hearing "beep" sound at the same time seeing the backlight
bright, the keypad is unlocked. There is not a symbol for locking. (Keys will be
automatically locked without key operation about 60 seconds).
4.2.2 On/off
With your finger touching the "Power" key, if the panel is turned on, it will be
LCD display Touch key
Unlock, on/ off
increase, compulsory cooling
Decrease, Compulsory
defrosting
Inquire, parameter setting,
password setting
Timer setting, timer
cancel, time setting
Locking key displayTimer display,
clock display
Water Temperature,
fault code, parameter
display
Output conditions
Running mode
Water level
Brand display
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OPERATIONshut down; if the panel is turned off, it will be start work.
4.2.3 Water tank temperature setting
With your finger touching"▲" key, "setting temperature" sign begins to glitter
and display the water tank setting temperature, and then using the finger touch
the "▲" key, then the water tank setting temperature increased.
With your finger touching the "▼" key, "setting temperature" sign began to glitter
and display the setting temperature of the water tank, and touching the "▼"key,
the setting temperature decreases. The temperature setting ranges from 20
degrees to 60 degrees (the maximum temperature can be set to 99 degrees, and
you can acquire more details from the functional test table)
4.2.4 Timer setting (you can set two time stage to choose the performance of
the units)
With your finger touching the "timer" key,entering the way of timer setting.
◆Adjusting the timing of the first stage:
Adjust timing on "hour", then touch "timer" key again, to adjust the timing on
"minute".
Then touch the "timer" key again, to adjust the timing off "hour", and touch the
"timer"
key again to adjust the timing off "minute".
◆Adjusting the timing of the second stage:
After the first stage timer setting, touch the "timer" key, to enter the second stage of
the timer setting. Adjust the timing as the ways above.
Exist the setting after finish all the timer setting. The panel will display the icon of the
timer.
Note:
(1). If only one timer stage needed, setting the first stage timer
according to the above steps. White for the second stage timer setting,
set the same time for timing on and off.
(2). If only setting the time in the first stage and not in the second, it
will exist setting automatically after about 8 seconds.
(3). The timer key in the stage 1 and 2 are timing on/off key. While in
the 3 and 4 stage, the timer key is for water supply pump. If without
water supply pump, this function is useless. However, during timer
on/off setting, must occupy all the 4 stages but no number request on
stage 3 and 4.
4.2.5 The timing cancellation
With your finger touching the "timer" key more than 3 seconds and removing it
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OPERATION
until hearing "beep" sound, then the timer is cancelled.
4.2.6 The clock settings
With your finger touching the "timer" key more than 8 seconds and removing it until
hearing "beep" sound, you enter the clock setting mode. First, adjusting the "hour";
then touching "timer" button, adjusting the "min"; and touching "timer" button again,
completing the setting and exiting the mode.
Note: The clock can be set only in the case of timing setting out.
4.2.7Compulsory defrosting
When the system boots and the press starts, with your fingers touching the "▼"
key more than 8 seconds, and removing your finger until hearing "beep" sound,
then entering defrosting system. The defrosting will exit until the arrival of platetube temperature or the end of the defrosting time.
4. 3 Parameter settings and inquiries
A: Function Query:
Under the state of heat pump running (switch on), with your fingers touch the
"setting" key, the query code by A1 to A9, if it is single-system model, and then
finger touch "setting" key to exist inquire. If it is dual-system model, and then
finger touch "setting" button, the query code by b1 to b9, then finger touch
"setting" button to exist. Accordingly stated as follows:
B Function setting:Under the state of heat pump running (switch on), touch “setting” button over 3
seconds, when you hear beeping, please remove your hand, the system will enter into
Cod
e
Meaning( single
system)
Meaning( double
system)Code
Meaning
(double system)
A1 coil pipe temperature coil pipe temperature1 b1 coil pipe temperature2
A2 Return gas temperature Return gas temperature1 b2Return gas
temperature2
A3 Exhaust temperature Exhaust temperature 1 b3 Exhaust temperature 2
A4Environment
temperature
Environment
temperatureb4
Environment
temperature
A5Outlet water
temperature
Outlet water
temperatureb5
Outlet water
temperature
A6Return water
temperature
Return water
temperatureb6
Return water
temperature
A7 00 00 b7 00
A8 Compressor current Compressor current 1 b8 Compressor current 2
A9Expansion valve open
angle
Expansion valve open
angle 1b9
Expansion valve
open angle 2
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OPERATION
setting state. After setting the parameters, your finger touching the “Function” key,
enter the next parameter setting, until all the parameters having setted.
C Error code and alarm:
Code Double system Single system Household unit
1 Wrong phase Wrong phase
2 lack of phase lack of phase
3 water flow switch water flow switch
4 High Pressure Switch 1 High Pressure Switch High Pressure Switch
5 Low Pressure Switch 1 Low Pressure Switch Low Pressure Switch
6 High Pressure Switch 2
7 Low Pressure Switch 2
8 Communication Communication Communication
Code
Parameter name Adjustmentrange
Initial value
/
/
Water tank temperature setting 20℃─60℃ 28℃
L1 bias between tank and display temperature 0℃─15℃ 0℃
L2 bias between compressor start and set
temperature
3℃─18℃ 3℃
L3 Set outlet water temperature 35℃─99℃ 35℃
L4 Maximal water tank temperature 30℃─99℃ 40℃
L5 Environment temperatureallowing electric heater start
0℃─35℃ 0(no electricheat)
L6 Return water temperature 30℃─65℃ 45℃
L7 Supplement water temperature 20℃─60℃ 20℃(no
supplement)
L8 Compressor current 0-48A 0 (no testing)
h1 Defrosting cycle 20-99minuter 50min
h2 Permission temperature for defrosting -15℃─1℃ -3℃
h3 Defrosting time 5-20min 8min
h4 Defrosting quit temperature 1℃─40℃ 20℃
p1 Electric expansion valve adjust period 20-180 30s
p2 Difference temperature between A1 and A2 -8─15 0
p3 Permission for exhaust temperature protection 70℃─135℃ 98℃
p4 Electric expansion valve open
angel when defrosting
6-55degree 50
p5 Minimal electric expansion valve open angel 6-30degree 15
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9 Limit time Limit time Limit time
10High exhaust
temperature1
High exhaust
temperature
High exhaust
temperature
11High exhaust
temperature2
High exhaust
temperature
High exhaust
temperature
12
Water tank
temperature sensor
broken
Water tank
temperature sensor
broken
Water tank
temperature sensor
broken
13Coil pipe1 temperature
sensor broken
Coil pipe1
temperature sensor
broken
Coil pipe1
temperature sensor
broken
14Coil pipe2 temperature
sensor broken
15
Exhaust gas
temperature sensor1
broken
Exhaust gas
temperature sensor
broken
Exhaust gas
temperature sensor
broken
16Exhaust gas
temperature sensor2
17Environment sensor
broken
Environment sensor
broken
Environment sensor
broken
18Return water sensor
broken
Return water sensor
broken
19 Input water sensor
20Water level switch
broken
Water level switch
broken
21 High input temperature
22Outlet water sensor1
broken
Outlet water sensor1
broken
23Outlet water sensor2
broken
24Return gas sensor1
broken
Return gas sensor
broken
25Return gas sensor2
broken
26Water pressure sensor
broken
Water pressure
sensor broken
27Low cooling water
temperature
Low cooling water
temperature
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MAINTENANCE & INSPECTION
5. Maintenance and inspection
5.1. The preparation work before the test running(1) Heat pump hot water units inspection:
◇Check whether the appearance of units or the machine pipeline system is
damaged during transporting.
◇Check whether there is air in the water pipe, if any, should emitting it using
the exhaust valve in the units or on the pump.
◇Check whether the fan blades interfere to the its fixed plate or its protecting
network.
(2) Checking Distribution System
◇Check whether the power supply complies with the manual or the unit
nameplate required.
◇Check whether all the power and control circuits connect absolutely; the
wires connects correctly according to the diagram; and whether ground
connection reliable, or all terminals solid.
(3) Checking piping system
◇Checking whether the piping system, filling pipes, backwater pipes,pressure
gauge, thermograph, valves, level switches and other equipment is installed
correctly.
◇Checking whether the valves needed opening are open and those needed
closed close.
◇Checking piping system for keeping warm is good.
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MAINTENANCE & INSPECTION5.2. Testing running
Units test must be professional to operate.
◇Conduct the overall testing running, until a comprehensive inspection in
entire system meeting the requirements,
◇With the power on and start the heat pump, the main machine starts 3
minutes later. For the three-phase power supply units, checking whether the
fan and the pump install correctly.
◇Checking whether the unit meets the requirements, if does ,it can be put into
normal use after running for a time (usually 1 day) after having been put into
normal use.
5.3. Maintenance
The heat pump is high automatic equipment which is needed inspection
regularly. If the maintenance is long-term and effective, it would increase
the operation reliability and the service life would be longer.
1. When Users are in the use and maintenance of the unit, please pay
attention to the following: no adjusting any security protection setting on
your own, as they have completed before leaving the factory.
2. Checking whether the power of unit and electrical system wiring is solid
regularly, and there are unusual between electrical components. If does,
maintenance and replacement timely.
3. Always checking whether the water supply of water, the pool valve, liquid
level controllers and exhaust device are working properly, so as to avoid
causing air into the system reduced the water cycle to affecting the heat
capacity of units and the reliability of its running.
4. Keeping units in the clean, dry and well-ventilated environment, also regular
cleaning (1-2 months) of side air-heat exchanger for the good effect.
5. Checking whether the components of units working properly, pneumatic
pipe fittings existing oil and refrigerant no leaking.
6. No putting odds around units in order to avoid blocking draft exit.
7. Let the water go in the pipe, cutting off the power and setting a good
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MAINTENANCE & INSPECTIONprotective cover, if the downtime is long. A comprehensive inspection is
necessary when the unit restart.
8. Please connecting with the local special maintenance department of our
company for the repairs in time if you have no ways to the failures.
9. The condenser cleaning, starting the circulating pump of units to clean the
condenser for 3 hours by the hot phosphoric acid of 50 ℃ to 60 ℃, whose
concentration is 15%, and finally washing it 3 times with tap water. (Pipe
installation proposes to set aside 3 interfaces, with the wire plug to seal an
interface, to prepare to take over cleaning).No using corrosive fluid to clean
the condenser.
5.4. Common Faults and debugging
If there are problems with the units during their performance, please connect
with the dealer, and the following table can be referred to.
Fault conditionThe possible cause of the
malfunctionTreatment measures
Unit no
operating
Power failure
Unit power cable loose
Control Power Fuse
Unit
The power off, check the
power supply
Pinpoint the cause and fix
Replacement fuse
Water
pump
operation but
water not
circulating or
water pump
noise Toolarge
Shortage of water in
water systems Water systems with air
Not all valves in water
system open Dirty water filter
Plugging Large
Inspection system
replenishment device, to
the system replenishment
Exclude water systems in
the air water system valve
open enough to
Cleaning water filters
Low heating
capacity of the
unit
Insufficient of
refrigerant
Water system for keep
warm not good
Dry filter plugging
Air heat exchanger
heat not well
Lack of water flow
System leak detection and
refrigerant charging
Strengthen the water
system insulation
Replace the filter drier
Clean air heat exchanger
Cleaning water filters
Power failure
Compressor contactor
Identify the causes of
power failure to resolve
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Compressor no
operation
damage
Loose wiring
Compressor
over-temperature
protection
Water temperature istoo high
Lack of water flow
Replace the contactor
Loose points to identify and
fix
Identify the causes of fever
after the start
troubleshooting Setting out water
temperature again
Cleaning water filters to
exclude the air system
Compressor
operating with
large noise
Liquid preparations into
the compressor
Compressor damage
to internal parts
Check whether the
expansion valve failure
Replacement of
compressor
No operation of
fan
Fan set screws
loosening
Fan motor burning
Contactor damage
Fastening set screws
Replace the fan
Replace the contactor
Compressor
operation, but
the unit no
heating
All refrigerant leaks
Compressor failure
System leak detection and
refrigerant charging
Replace the compressor
Unit water flow
is too low to
protect
System, lack of water
flow
Target-type flowcontroller is not reset
Cleaning water filter
system to exclude the air
Adjustment or replacementof target-type flow
controller
Exhaust
pressure is too
high
Refrigerant too much
Fluoride-way system
has non-condensable
gas
Water flow is not
enough
Excess refrigerant
discharged
Discharge
non-condensable gas
Check water systems,
increased water flow
Suction
pressure is too
low
Dry filter plugging
solenoid valve to open
at the end
Big buck through the
heat exchanger
Replace the filter drier
Repair or replace the
solenoid valve
Check thermal expansion
valve opening degree of
appropriateness
Compressor oil
loss Insufficient lubrication Adding oil
MAINTENANCE & INSPECTION5.5. Electrical wirin g diagram
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5.6. Note for electrical wirin g:
1. Customer could choose to use the Gang Switch and Electrical Heating. If not
needed, just leave it free without connecting.
2. For Interlock Switch, please make sure it is connected, otherwise the compressor
will not start.
3. If need electrical heating, and with power larger than 1KW, please do not connect
the electrical heating directly to PCB controller, but should be controlled by a A.C.
contactor.
W ARRANTY
6. Warranty services
1.The free warranty of our swimming pool heat pump is 12 months, starts from
the date of purchase. The after-sale service department of our companywill provide consumers free services due to the failure of the product quality
under warranty.
2. Warranty certificate
The heat pump units are free to repair during the warranty period, if the
users have the purchase invoice and products warranty card. If not, the
units are regarded as products surpassing the warranty period. These
products are free to repair, but provided the paid services.
3. The damages caused below are not in the free warranty coverage, but can
pursue life-long maintenance services.
3.1 Damage due to the consumer installing, dismantling and repairing.
3.2 Damage due to transportation and maintenance by consumer
themselves, or not using referring to the manual.
3.3 Failure due to power supply not meet requirements and natural
disasters.
3.4 Failure duo to the dirty of the outdoor exchanger and the water system,
also the irregular clearing the exchanger and filter.
3.5 Not properly equipping filter for the refilling cold water pipe and water
inlet pipe.
3.6 Equipment failure caused by forced running for large water production
seriously exceeds the heat pump capacity.
3.7 The warranty card number of the product maintained not matched with
the product number.
3.8 Warranty card with an eraser.
3.9 No warranty card and purchase invoices.
3.10 Over warranty period products.