Hisense BCD-720WP1BF1Z9/HC1(H) User manual

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产品
名称:
冷藏冷冻箱
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型号：
BCD-720WP1BF1Z9/HC1(H)
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名称：
售后服务技术资料
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编号：
BSSJ00004644
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日期：
2022 年1月3日
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Refrigerator
Service Manual
MODEL：
BCD-720WP1BF1Z9/HC1(H)

BSSJ00004644..................................................................................................................................0
1. Warning and precautions for safety...............................................................................................1
2. Appearance and structure..............................................................................................................2
2.1 View of the appliance..........................................................................................................2
2.2 Wind channel structure........................................................................................................3
2.3 Evaporator structure............................................................................................................3
2.4 Compressor room structure.................................................................................................4
3. Basic parameters ...........................................................................................................................5
4. Operation and functions ................................................................................................................6
4.1 Display controls ..................................................................................................................6
4.2 Using your Appliance..........................................................................................................9
4.3 Defrost mode.....................................................................................................................28
4.3.1 Start condition........................................................................................................28
4.3.2 Defrost flow ...........................................................................................................28
4.4 Error display......................................................................................................................29
4.4.1 Error Code..............................................................................................................29
4.4.2 Checking method ...................................................................................................32
5. Troubleshooting ..........................................................................................................................36
5.1 Common problem and checking .......................................................................................36
5.2 Faulty start.........................................................................................................................38
5.3 Refrigeration failure..........................................................................................................39
5.3.1 Freezer compartment.........................................................................................39
5.3.2 Refrigerator compartment .................................................................................40
5.4 Thick frost in freezer compartment ...................................................................................41
5.5 Dew in refrigerator compartment......................................................................................42
5.6 Breaking of light ...............................................................................................................43
5.7 Pipe noise..........................................................................................................................44
5.8 PANEL PBA operates abnormally ....................................................................................45
6. Circuit and checking ...................................................................................................................46
6.1 Circuit diagram .................................................................................................................46
6.2 Mainboard.........................................................................................................................46
6.2.1 Checking method ...................................................................................................46
6.2.2 Removing the mainboard .......................................................................................46
6.3 Compressor .......................................................................................................................47
6.3.1 Basic parameters ....................................................................................................47
6.3.2 Checking method ...................................................................................................47
6.3.3 Removing the drive board......................................................................................48
6.4 Fan motor ..........................................................................................................................48
6.4.1 Basic parameters ....................................................................................................48
6.4.2 Checking method ...................................................................................................48
6.4.3 Removing the freezer fan motor.............................................................................49
6.4.4 Removing the condenser fan motor .......................................................................50
6.5 Damper..............................................................................................................................51

6.5.1 Basic parameters ....................................................................................................51
6.5.2 Checking method ...................................................................................................51
6.5.3 Removing the damper ............................................................................................51
6.6 Light..................................................................................................................................52
6.6.1 Basic parameters ............................................................................................................52
6.6.2 Checking method ...........................................................................................................52
6.6.2.1 Check the connecting wiring between light and mainboard is well or not. Repair if it is
broken. ....................................................................................................................................52
6.6.2.2 Checking method ........................................................................................................52
6.6.3 LED light removal..................................................................................................53
6.6.3.1 Removing the refrigerator top light.............................................................................53
6.6.3.12 Removing the refrigerator side light .........................................................................53
6.7 Door switch.......................................................................................................................53
6.7.1 Basic parameters ....................................................................................................53
6.7.2 Checking method ...................................................................................................54
6.8 Defrost heater....................................................................................................................54
6.8.1 Basic parameters ....................................................................................................54
6.8.2 Checking method ...................................................................................................55
6.9 Removing the Display Component ...................................................................................55
6.9.1 Basic parameters ............................................................................................................55
6.9.2 Checking method ...........................................................................................................55
6.9.3 Removing the Display Component ................................................................................56
6.10 Dispenser motor ..............................................................................................................56
6.10.1 Basic parameters ..........................................................................................................56
6.10. 2 Checking method ........................................................................................................56
6.11 Lever switch....................................................................................................................58
6.11.1 Basic parameters ..........................................................................................................58
6.11.2 Checking method..........................................................................................................58
6.11.3 Removing the lever switch...........................................................................................58
6.12 Water system ...................................................................................................................59
6.12.1 Schematic diagram of water system.....................................................................59
6.12.2 Water system out of the freezer room...................................................................60
6.12.3 Water system in the fridge room ..........................................................................61
6.13 Ice maker & Ice crusher motor assembly........................................................................64
6.13.1 Checking method .........................................................................................................64
6.13.2 Ice crusher motor assembly checking method .............................................................64
6.13.2 Remove the ice maker part...........................................................................................66
6.13.3 Remove the ice crusher motor......................................................................................67
6.13.4 Remove the water nozzle .............................................................................................68
6.14 Checking the electromagnetic valve ...............................................................................70
6.15 Maintenance mode ..........................................................................................................71
6.16 Sensor..............................................................................................................................72
7. Cooling system repairing ............................................................................................................75
7.1 Refrigeration system .........................................................................................................75

7.2 Summary of repair ............................................................................................................76
7.3 Regulation of repair ..........................................................................................................77
7.4 Practical work of repair.....................................................................................................78
7.5 Brazing reference drawing ................................................................................................79
8. Ice maker& Water dispenser .......................................................................................................80
8.1 Ice maker...........................................................................................................................80
8.2 Water dispenser .................................................................................................................82
9 Fault table ....................................................................................................................................84
9.1 Fault table..........................................................................................................................84

1
1. Warning and precautions for safety
Please observe the following safety precautions in order to use safely and correctly the
refrigerator and to prevent accident and danger during repair.
1. Be care of an electric shock. Disconnect power cord from wall outlet and wait for more
than three minutes before replacing PCB parts. Shutoff the power whenever replacing and
repairing electric components.
2. When connecting power cord, please wait for more than five minutes after power cord
was disconnected from the wall outlet.
3. Please check if the power plug is pressed down by the refrigerator against the wall. If
the power plug was damaged, it may cause fire or electric shock.
4. If the wall outlet is over loaded, it may cause fire. Please use its own individual electrical
outlet for the refrigerator.
5. Please make sure the outlet is properly earthed, particularly in wet or damp area.
6. Use standard electrical components when replacing them.
7. Make sure the hook is correctly engaged. Remove dust and foreign materials from the
housing and connecting parts.
8. Do not fray, damage, machine, heavily bend, pull out or twist the power cord.
9. Please check the evidence of moisture intrusion in the electrical components. Replace
the parts or mask it with insulation tapes if moisture intrusion was confirmed.
10. Do not let the customers repair, disassemble and reconstruct the refrigerator for
themselves. It may cause accident, electric shock, or fire.
11. Do not store flammable materials such as ether, benzene, alcohol, chemicals, gas, or
medicine in the refrigerator.
12. Do not put flower vase, cup, cosmetics, chemicals, etc., or container with full of water
on the top of the refrigerator.
13. Do not put glass bottles with full of water into the freezer. The contents shall freeze and
break the glass bottles.
14. When you scrap the refrigerator, please disconnect the door gasket first and scrap it.

2
2. Appearance and structure
2.1 View of the appliance
Note!
Due to unceasing modification of our products, your refrigerator may be slightly different
from this instruction manual, but its functions and using methods remain the same.
To get the best energy efficiency of this product, please place all shelves, drawers and
baskets on their original position as the illustration above.

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2.2 Wind channel structure
2.3 Evaporator structure
1－Fuse
2－Accumulator

4
3－Sensor
4－Heater
5－Evaporator
2.4 Compressor room structure
1－Dry filter
2－Motorized valve
3－Power cord
4－Compressor
5－Fan Motor
6－Bottom condenser
7－Evaporation dish
8－Motorized valve
9－Connector(180°)
10－Connector(90°)
11－Water tube (white, flow to the icemaker in fridge room)
12－Water tube (white, flow to the dispenser on fridge door)
13－Water tube (white, flow to the icemaker in freezer)
14－Water tube(grey, connect with the water filter)
1
2
3
4
5
6
7
8
9
10
11
12
13
14

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3. Basic parameters
SPECIFICATIONS
DESIGN PRESSURE
HIGH SIDE / LOW SIDE
250 psig / 88 psig
REFRIGERANT / AMOUNT
R600a (62g)
VOLUME (Refrigerator / Freezer)
25.4 (17.6 / 7.8) cu.ft
RATED VOLTAGE
AC115V
RATED FREQUENCY
60Hz
RATED CURRENT
3.0A
DEFROST POWER
220W
FOAMING AGENT
Cyclopentane
NET WEIGHT
131kg
GROSS WEIGHT
142kg
W×D×H (with hinges)
91.4×85.4×177.8cm
W×D×H (without hinges)
91.4×85.4×177.8cm

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4. Operation and functions
4.1 Display controls
Your product has one control panel which is installed on the top cover, it may be different
depending on the model. Use your appliance according to the following control guidelines.
When the appliance is powered on for the first time, the backlighting of the icons on the
display panel will light up immediately. If no buttons have been touched or the doors are
closed, the backlighting will turn off after 60seconds.
The control panel consists of two areas about temperature, and one area about different
modes.
Caution!
When you set a temperature, you set an average temperature for the whole refrigerator
cabinet. Temperatures inside each compartment may vary from the temperatures
displayed on the panel, depending on how much food you store and where you place it.
High or low room temperature may also affect the actual temperature inside the appliance.
Child Lock and Door Alarm
This button serves two purposes:
1. Child Lock
Press and hold “Alarm” for 3 seconds to lock the all the control panel including dispenser
function. If control panel is locked, the icon " " will be on, and none of the buttons on the
control panel work. To unlock the control panel, please press and hold “Alarm” for 3
seconds again.
2 .Door Alarm
When door opening alarm occurs, the alarm icon will be fashing , a buzzing sound will be
heard and the control panel will display" dr ". Touch the “A larm” key, the alarm icon will
change from flashing normally on and the buzzing will stop. When the door is closed or
opened for a long time, the alarm icon will turn off.
Ice Control

7
This button controls the ice maker. You can touch the "Ice Off" button to control the ice
maker. When the "Ice Off" function light is off, the ice maker is working. If you want to close
the ice maker, please touch the "Ice Off" button again until the button light is on.
Freezer Temperature Control
You can touch the “Freezer” button to activate the mode to control the freezer
temperature. When you press the button
continuously, the temperature will be set
in the following sequence.
If the temperature is switched to Celsius,
it will be displayed circularly from - 14°C
to - 24°C as shown in the figure below.
If you want to decrease the time needed
to freeze products in the freezer, please
press and hold the “Freezer” button for 3
seconds, the Super Freeze icon “ ” will
be illuminated, the freezer temperature setting displays -11°F. Super Freeze can
quickly lower the temperature and
freeze your food faster than usual. This can retain more of the vitamins and
nutrients in fresh food and keep your food longer.
The Super Freeze mode allows you to
freeze items inside with maximum speed.
We recommend that you let the appliance operate for 6 hours first.
Super Freeze automatically switches off
after 52 hours, and the freezer temperature setting will revert back to
the previous setting.
When the Super Freeze function is on,
you can touch the freezing temperature
regulating or press “Freezer” button more
than 3 seconds, " Super Freezer" will be off and the temperature setting will revert
back to the previous.
Fridge Temperature Control
You can touch the “Fridge” icon to activate the mode to control the fridge temperature.
When you touch the button continuously, the temperature will be set in the following
sequence.
If the temperature is switched to Celsius,
it will be displayed circularly from 8°C
to 2°C as shown in the figure below.

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If you want to decrease the time needed
to cool products in the Fridge, please
touch and hold this button for 3 seconds.
The Super Cool icon “ ” will be
illuminated, and the fridge temperature setting displays at 36°F(2°C).
Super cool automatically switches off after 3 hours, and the refrigerator temperature
setting will revert back to the previous setting.
When Super Cool function is on, you can
touch the “Fridge” button again to switch it
off. The fridge will not retain the Super Cool
function when powered off.
When the Super Freeze function is on,
you can touch the refrigerator temperature
regulating or press “Fridge” button more
than 3 seconds, " Super Cool" will be off and
the temperature setting will revert back to
the previous
Note:
If you want to exchange the "℉" to "℃", please press and hold the "Super Cool" and
"Energy Saving” buttons for 3 seconds.
Energy Saving
You can touch this button to turn Energy
Saver mode on and off. When you turn
Energy Saver on, the Energy Saver icon
“” lights up.
The temperature of the fridge is automatically switched to 43°F(6°C) and the freezer to
1°F(-17°C). When enter Energy Saver mode, " Super Cool" and " Super Frezeer" mode
will be off.
Energy Saving
Water Filter
In general, you should change the water filter every 6 months to ensure the highest
possible water quality.
After the refrigerator has dispensed about 300 gallons of water, the filter icon " " will blink,
reminding you to replace the water filter.
First of all, you need to purchase a new water filer. You can purchase the new filter from
the retailer where you purchased your refrigerator or the Hisense after-sales service
system.
Before that, please check that the new filter is the same filter type that came with your
fridge and can be correctly used in your refrigerator.

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After you change the water filter, touch and hold the “Eco” buttons for 3 seconds to make
the blinking stop. When you replace the water filter, some water may leak from the filter
and lines. Please let the water flow into a pan and wipe up any leakage that may have
occurred.
℉/℃
When the Child Lock is off, you can touch the "℉/℃" icon to switch between Celsius and
Fahrenheit units. The default state is Fahrenheit display. When it is switched to
Fahrenheit, the icon " " will be on.
Dispenser Control
When the Child Lock is on, the dispenser
will not work. The Ice Type button includes
“Cubed” and “Crushed” options.
You can press the " Cubed" or " Crushed"
option to choose the type of Ice to be
dispensed. You can touch the " Water"
button to activate the water mode.
When you touch the Ice Type button, the
cubed or crushed ice mode which you
choose will be activated, and the Cubed
“” or Crushed “ ” ice icon lights up.
If you don’t need ice, turn the function
off to save on water and energy
consumption(See Ice Off above). If you
need water, please touch the“Water”
button, and the water icon “ ” will light
up. The mode is then set.
Demo mode
Demo mode is for store display, and it prevents the refrigerator from generating
cool air. In this of Cooling off Mode, the refrigerator may seem like it is working but it will
not make cool air. The indicators on the control panel will show double " 0F" . To cancel
this mode, press and hold “Alarm” and “Eco" keys at the same time for 3 seconds until the
buzzer beep three times and the display panel will light for 3 seconds.
4.2 Using your Appliance
This section tells you how to use most of the useful features. We recommend that you read
through them carefully before using the appliance. It may be different depending on the
model
For proper installation, this refrigerator must be placed on a level surface of hard material
that is the same height as the rest of the flooring. This surface should be strong enough to
support a fully loaded refrigerator.

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Ventilation of appliance
In order to improve efficiency of the cooling system and save energy, it is
necessary to maintain good ventilation around the appliance for the dissipation
of heat. For this reason, sufficient clear space should be available around the refrigerator.
1. Leveling of appliance
For sufficient leveling and air circulating in the lower rear section of the appliance, the
bottom feet may need to be adjusted. You can adjust them manually by hand or by using
a suitable tool.
To allow the doors to self-close, tilt the top backwards by 10~15mm.
Caution!
Let your refrigerator stand upright for approximately4 hours before connectingit to power.
This reduces the possibility of a malfunction in the cooling system from improper handling
during transportation.
Wait for approximately 2 hours after moving your appliance or plugging it in for the first
time so that the coolant fluid settles.
If you do not level your refrigerator during installation, the doors may not close or seal
correctly which can cause cooling, frost, or moisture problems.
2. Door removal
In case your home access door is too narrow for the refrigerator to pass through, remove

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the refrigerator doors and drawers by the following instructions.
Tools you will need (Not provided):
Allen Wrench (4mm)
Wrench (8mm)
Philips Screwdriver
2.1 Disassembling the fridge door
Some models may be slightly different from pictures. If some parts shown in the picture
cannot be found in your appliance, please ignore the relevant description.
1. With the door closed, remove the 3 screws holding the top cover (A) with Philips (+)
screwdriver, and then remove the top cover with the entire-harness attached.
2. Remove the 3 screws (B) fixed on the hinges with a wrench (8mm) and 1 ground screws
(C) attached to the hinge with Philips (+) screwdriver. Remove the upper left and right door
hinges (D).
3.Use your both hands to open the door more than 90°.Lift it up and take it off.
4. Remove the 4 hex head bolts hinges (E) with an Allen wrench (4 mm).Remove the lower
left and right door hinges (F).

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Re-attaching the fridge doors
To reattach the fridge doors after you have moved the appliance to its final location,
assemble the parts in reverse order.
Caution!
In case the fridge doors can’t be self-closed, please make sure the door opened more than
90°when you remove or re-attaching the fridge doors.
2.2 Disassembling the freezer door
1. Pull out the freezer door and the upper freezer drawer (A) to the final position.
Then take out the ice box (B) by lifting it up in the direction of the arrow.
2. Take out the upper freezer drawer (A) by lifting it up from the rail system.
3. Remove the lower freezer drawer (C) by lifting it up.

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4. Remove the 4 screws attached to the supporting frame (D).
5. Pull out the freezer door and lift it up in the direction of the arrow.
Re-assembling the freezer door
To reattach the drawer after you moved the appliance to its final location, assemble the
parts in reverse order.
Remove the ice maker part
1. Open freezer door, take upper drawer out.

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2. Disassemble two fixed screws with a cross screwdriver (+).
3. Pull out the ice maker part.
4. Unplug two terminals, then take out the ice maker part.

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Remove the water pipe connector part
1. Remove the ice maker part.
2. Unplug the terminal.
3. Remove wire line from two buckles in the direction of arrow one by one.
4. Disassemble the fixed screw with a cross screwdriver (+), then pull the ice maker inlet
cover down.