Haier HB21TNN User manual

CAUTION
READ THIS MANUAL CAREFULLY TO
DIAGNOSE TROUBLE CORRECTLY
BEFORE OFFERING SERVICE .
Refrigerator
SERVICE MANUAL
Features:
1.Chill drawer for delicatessen
2.Slide-out shelf for easy food access
3.Artificial Intelligent (AI) design
4.CFC-free and frost-free deep freezing enabled by efficient air cooling system
5.Air Curtain technology
MODEL:HB21TNN
Haier Grou
p
6.Vitamin C technology for fresh food storage
7.Ice making

SAFETY PRECAUTIONS----------------------------------------------------------------1-2
SPECIFICATIONS--------------------------------------------------------------------------3-4
PARTS IDENTIFICATIONS--------------------------------------------------------------5
DISASSEMBLY------------------------------------------------------------------------------6-13
CONTROL AND DISPLAY SYSTEM--------------------------------------------------14-18
Control and display panel----------------------------------------------------------14
Function adjustment and control principle-------------------------------------14-18
Fault Display--------------------------------------------------------------------------15
REFRIGERATION PRINCIPLE----------------------------------------------------------19
System flow chart--------------------------------------------------------------------19
System flow scenograph ----------------------------------------------------------19
CIRCUIT DIAGRAM ------------------------------------------------------------------------20
Brief principle diagram--------------------------------------------------------------20
Connect diagram---------------------------------------------------------------------20
SENSOR POSITION------------------------------------------------------------------------21
ELECTRICAL CONTROL PRINCIPLE-------------------------------------------------22
Overview--------------------------------------------------------------------------------22
Main Control Board of HB21T-----------------------------------------------------22
Air Escaper Controlling Pinciple--------------------------------------------------23
Refrigerator Test Model-------------------------------------------------------------24
Fan motor control---------------------------------------------------------------------24
Defrosting Control--------------------------------------------------------------------25
TROUBLE SHOOTING--------------------------------------------------------------------27-41
Normal phenomena-not troubles for refrigerators----------------------------27
Troubles in Refrigerators and Their Remedies-------------------------------24-29
Analysis of Troubles and Troubleshooting------------------------------------30-41
CONTENTS

SAFETY RECAUTIONS
DǃPower supply: AC 220V/50HZ
If the voltage fluctuates violently (beyond 187~242V), it is necessary to use a voltage
stabilizer of 750W or above to prevent startup failure, damaged control board or
compressor, or unusual noise.
EǃThe appliance must be plugged into a dedicated outlet that is securely
grounded.
The power cord of this appliance is fitted with the three-prong plug (grounded) that complies
with the standard three-prong outlet (grounded). Never cut off or remove the third prong. The
refrigerator should be located so that the plug is accessible.
WARNING! The plug should be securely connected to the socket or otherwise
fire hazard may arise.
FǃBe careful not to damage the power cord.
1. Always pull at the plug other than the cord itself to disconnect the appliance from the outlet.
Route the power cord in a way to eliminate the risk of damage caused by the weight of
refrigerator or treading.
2. Be careful not to damage the power cord when moving the appliance away from the wall.
GǃWhen the power cord is damaged
The use of cracked cord or worn plug is strictly prohibited. If the power cord is damaged, it
should be replaced in an authorized service center.
HǃWhen there is a gas leakage
1. Shut off the gas valve.
2. Open the doors and windows for ventilation.
3. Do not plug or unplug the refrigerator or other electric appliances.
IǃAlways remember to unplug the appliance in the following cases:
1. Unplug the appliance before cleaning and reparation.
2. Unplug the appliance before replacing the old light bulb to prevent electric shock.
JǃNever store inflammable or explosive items and strong corrosive acids or
alkalis in the appliance.
KǃThis appliance is a household refrigerator, which is produced in accordance
with the specification of national standard. It is intended for food storage only,
not for storage of blood, medicine and biological products.
LǃTo prevent risk of fire, keep the appliance away from gasoline or any other
inflammables.


SAFETY RECAUTIONS
MǃTo prevent risk of electromagnetic interference or other accidents, do not
place any patch panel, voltage stabilizer and microwave oven on top of the
refrigerator or use any electric appliance (unless recommended by the
manufacturer) inside the refrigerator.
NǃChildren are not allowed to play with the door or the bottle racks. Serious
injury may occur.
OǃThe internal surface of freezer compartment is very cold when the
appliance is running. Do not touch the surface especially when hands are wet.
PǃThe gap between the doors and the gap between the doors and the
cabinet are very small. Make sure figures do not get stuck. Always keep
children away when a door is opened or closed.
QǃDo not splash water onto the refrigerator. Keep off places of high humidity
that may have adverse effect on the electric insulation performance.
RǃNo dismantlement or modification can be made without authorization.
Damage to refrigeration system is strictly prohibited. Reparation must be
carried out by authorized personnel.
SǃBottled beer or beverage should not be stored in the freezer
compartment - risk of explosion.
TǃUnplug the appliance in the event of power interruption or cleaning.
The appliance can be plugged again only after an interval of at least 5 minutes
to prevent damage to the compressor caused by frequent startups.
UǃPlease remove the door, door seal and shelves before disposal of the
old appliance and put them away in a safe place to prevent children from
being entrapped.


SPECIFICATIONS

REFRIGERATOR


 
1. Model

HB21TNN
Photo

Commercial brand

Haier
Product description REFRIGERATOR-FREEZER
Type of Appliance (FS= freestanding BI= built-in) FS
Energy efficiency class /
Climate class (N= + 18-32 °C T=+ 18-43 °C) SN/N/ST
Freezer compartment / Star rating 

2. Key features
 
Gross capacity l588
Total net capacity l 557
Defrosting (H=manual A=automatic) Fridge/Freez A
Defrost water outlet Ye s
Air circulating ventilator Yes
Kind of coolant (R134a/R600a) R134a
Foaming components C-P
3. Technical data
 
Voltage / frequency V/Hz 220-240 V~/ 50
Input power W 180
Length of cable / incl. plug cm 350
Temperature range (from>to) Fridge / Freez °C -22~7
4. Aesthetics
 
Colours (see L): 
Top cover Black
Cabinet Black
Door 
Door Frame Black
Fascia panel / Handle 
Inside door/-drawers (w=white t=transpar.) - / -
Door:  
F= Flat / R= Rounded / S= Streamline S
Hinged (r =right l =left) / reversible) 
Lock 
Shelves:  

Black
Black
- / -
- / -

Number

Type (gr=grill/g=glass/p=plastic)

g
Colour of shelves

Adjustable

S
Drawers:  
Number n°.
Crisper: 
Salad crisper(s) transparent / white transparent
5. Equipment & Accessories  
Control Panel:  
Control panel interior / exterior Exterior
Thermometer interior / exterior Ex terior
Control lamps green / yellow / red  
Over temperature ALARM LED / acoustic acoustic
Adjustable thermostat NO
Fast freeze switch YES
Interior light W25
Adjustable feet front / rear n°
Castors front / rear rear
6. Product dimensions  
Unit dimensions H / W / D mm770*910*1770
Depth with open door cm
Net weight kg 130
7. Packing dimensions & loadability  
Packing dimensions H / W / D cm 1 78x98x185.5
Gross weight kg 143
8. Recycling symbols  
Carton weight in g kg 
9. Service  
Users instruction (languages) 
10. Others  
YE
4
English-French

2
fron t

PARTS IDENTIFICATIONS
Refrigerador light
Dairy bin
Vertical beam
Cover of crisper
Gallon bin
Refrigerator compartment
Vitamin C Drawer
Shelf
Wine shelf
Movable board
Crisper
Delicatessen drawer
Front cover of
delicatessen drawer
Dairy bin
Gallon bin
Freezer compartment
Icecream bin
Semi-automatic
icemaker
Ice storage bin
Freezer drawer
Partition wall of
freezer drawer


DISASSEMBLY
1. Removing and replacing the right door of refrigerator compartment
ķUnscrew the upper right hinge cover by
means of screwdriver and then remove
the hinge cover.
ĸUnscrew the upper right hinge by means of
hexagonal screwdriver and then remove the hinge.
ĹRemove the door and place it in a proper
position.
ĺRemove the middle hinge if necessary.
ĻReplace the door in a reverse sequence of
removal.
2. Removing and replacing the left door of refrigerator compartment
ķUnscrew the upper left hinge cover by
means of screwdriver and then remove the
hinge cover.
ĸUnscrew the upper left hinge by means of
hexagonal screwdriver and then remove the
hinge.


DISASSEMBLY
ĹRemove the door and place it in a proper
position. ĺRemove the middle hinge if necessary.
ĻReplace the door in a reverse sequence of removal.
3. Removing & Replacing Freezer Drawer
ķPull out the freezer drawer entirely and
remove it from the refrigerator.
ĸRelease the buckles on both sides and pull out
the drawer door in the direction shown on the
slideway and remove it from the refrigerator.
ĹReplace the freezer drawer in a reversal sequence to removal.
4. Removing & Replacing Door Handle
Take out the door handles from the refrigerator compartment (2 longer handles to be installed on
the refrigerator and 1 shorter handle to be installed on the freezer). The following instructions
should be observed.
Removing & Replacing Refrigerator Door Handle
Get 2 fasteners out of the accessory bag and place them in 2 reserved holes in the left door.
Install a handle by attaching the reinforcing plate to the fasteners and then pushing the handle
downwards into its place. Install the right handle in the same way. To remove the handle, push it
upwards.
Fig 1 Fastener
Reinforcing plate


DISASSEMBLY
Removing & Replacing Freezer Door Handle
Get 2 fasteners out of the accessory bag and place them in 2 reserved holes in the freezer
door. Install a handle by attaching the reinforcing plate to the fasteners and then pushing the
handle leftwards into its place. To remove the handle, push it rightwards.
Fastener
Reinforcing plate
5. Installing wine shelf
Open the door of refrigerator compartment. Take out the food shelf at the upper left corner. Place
the glass shelf downward on a table. Then take out the wine shelf from the delicatessen drawer
at the bottom. Hold the wine shelf at both ends, attach it to the food shelf (as shown below in Fig 1)
and then push it in place (as shown below in Fig 3).
ı
ı
6. Installing front cover of delicatessen drawer
Open the door of refrigerator compartment. Take out the front cover of delicatessen drawer from the
crisper cover. Then place the rotary shaft at both ends of the delicatessen drawer into the supporting
slot of the slide guide, and turn the front cover of delicatessen drawer down.


DISASSEMBLY
7. Installing Bottom Trim
Open the door of refrigerator compartment and take out the bottom trim. Fasten it to the
bottom of refrigerator with screws as illustrated.
Take out the accessory bag containing the legs from the refrigerator compartment. Get the
legs to be installed. The appliance should be given a tilt by one person and the legs should
be installed as illustrated into the reserved holes by the other person.
I
8. Installing Legs
Leg
Reserved
hole
9. Height-adjustable Shelf
The height of shelf can be adjusted to meet your storage needs.
To adjust the shelf height, remove the shelf first. The steps are as follows:
tilt the shelf up at front, and lift it up and out of tracks. To replace the shelf, with shelf front
raised slightly, engage the lugs in tracks. Then lower shelf front until it locks into position.
Lift and remove
Tilt up
To remove
Engaged the lugs
To replace


DISASSEMBLY
10. Removing Crisper Cover
Take out the crisper and put it away. Lift up the cover end (1) and remove it (2).
11. Cleaning door bin
Lift the bin up (1) and pull it towards you (2). Replace the bin in the reverse sequence of
removal after cleaning.
12. Ice Cream Bin
An ice cream bin is provided to hold ice cream or similar items to be stored at low
How to use the ice cream bin
1. To take out the ice cream bin, get the handle of it and pull it towards you.
2. To clean the ice cream bin, follow these instructions:
ķPull the ice cream bin out to the stop position.
ĸLift the ice cream bin up (in the direction indicated by Arrow 1) and remove it from the
refrigerator (in the direction as indicated by Arrow 2).
ĹReplace the ice cream bin after cleaning in the reverse sequence of removal.
temperatures.
(Fig 1)
Handle on
ice cream bin
(Fig 2)


DISASSEMBLY
13. Adjustable partition wall of freezer drawer
A movable partition wall is provided in the freezer drawer to divide the drawer into two parts.
You may move the partition wall right or left to meet your storage needs.
ıˇ
ıǑıǒı
14. Replacing the Light Bulb(refrigerator)
Bulb specifications: 220V~, 25W
Socket: E14 (DO NOT use a bulb over 25W)
Unplug the appliance.
ķTo remove the light shield, press the stopper
at rear out of the square hole.
ĸPull the shield backward until the retainer is
separated from the square hole.
Turn the bulb anticlockwise and out. Replace a
bulb of the same specifications in the reverse
sequence of removal.
To replace the light shield: Engaged the retainer
into the square hole and then press the shield
rear forward until the stopper is locked in the
square hole.
Square
hole
Refrigerator
light socket
Retainer
Stopper
Light bulb


DISASSEMBLY
15. Replacing the Light Bulb
Bulb specifications: 220V~, 25W
Socket: E14 (DO NOT use a bulb over 25W)
To replace the light bulb:
1. Unplug the appliance.
ķRemove the front screw with a screwdriver.
ĸTo remove the light shield, press the stopper at front
ǂout of the square hole.
ĹPull the shield forward until the retainer is separated ǂ
from the square hole.
2. Turn the bulb anticlockwise and out. Replace a bulb of
the same specifications in the reverse sequence of
removal.
3. To replace the light shield: Engaged the retainer into the
square hole and then press the shield front backward
until the stopper is locked in the square hole. Replace
and tighten the screw.
Screw hole
Square
hole
Freezer light socket
Stopper
Retainer
Freezer light bulb
16. How to User the Crisper
The appliance is equipped with a crisper for vegetable and fruit
storage. You can set the humidity to meet your storage needs.
1. Turn the humidity regulator (located at the upper right
corner of the crisper) up to get a higher humidity suitable for
storage of cucumber, grape, kiwifruit and persimmon etc.
2. Turn the humidity regulator (located at the upper right
corner of the crisper) down to get a lower humidity suitable
for storage of strawberry, orange, bean, garlic, watermelon,
plum and tomato etc.
Up
Down
Humidity regulator
17. How to Use the Delicatessen Drawer
The appliance is equipped with a delicatessen drawer with a
temperature range from -2°C~+3°C. The temperature can be
adjusted by the air control knob to meet your storage needs.
1. Turn the air control knob leftwards (weak) to reduce the cooled
air moving in the delicatessen drawer and maintain a higher
temperature;
2. Turn the air control knob rightwards (strong) to increase the
cooled air moving in the delicatessen drawer and maintain a
lower temperature.
Air control knob
cold colder
cold colder

Humidity
High
Low
Humidity
High
Low

DISASSEMBLY
18. Icemaking
1. Pourwater in the icemaker to 3/4 of its capacity and then place it in the freezer
.
2. To get ice cubes, turn the knobs on the icemaker respectively and the ice
cubes will be collected in the ice storage bin.
3. The ice cubes in the ice storage bin are ready for use.
Knob on icemaker
Ice storage bin
Limit of water level
Icemaker


CONTROL AND DISPLAY SYSTEM
1. Control and display panel
2. Function adjustment and control principle
5
3
1
5
3
1
B
CD
F
GJ
L
AE
KI
H
A……Refrigerator temperature control button
B……Fast chill button
C……Freezer temperature control button
D……AI button
E……Fast freeze button
F……Lock / unlock button
G……Refrigerator temperature display
H……Freezer temperature display
I…… Fast chill icon
J……Lock icon
K……Fast freeze icon
L……AI icon
ǃAI Mode
The AI mode means there is no need for manual intervention and the temperature setting will
change automatically along with the ambient temperature and the inner temperature. Under the
Unlock mode, the AI button (D) may be tapped to display the AI icon (L) and activate the AI
mode. To quit the AI mode, tap the AI button (D) again. The AI icon (L) will disappear.
5
3
1
5
3
1
D
L


CONTROL AND DISPLAY SYSTEM
ǃFault Display
When a fault with a control or function is detected, the refrigerator temperature display and the
freezer temperature display will disappear while the fault codes will be displayed, i.e. E0, E1, E2,
F1, F2, F3, F5 and F6, etc. In this case, please call the service center for information and
support.
ǃLock & Unlock
Under the Unlock mode, the Lock / Unlock button (F) may be tapped to display the Lock
icon (J) and enter into the Lock mode. To quit the Lock mode, tap the Lock / Unlock button
(F) again. The Lock icon (J) will disappear.
NOTE: Controls for selecting temperatures in refrigerator and freezer compartments
and functions such as fast freeze, fast chill and AI (artificial intelligence)
cannot be operated under the Lock mode.
5
3
1
5
3
1
F
J

indication
NO. item F SET R SET content remarks
1normal Set temperature no key-press normal
2 F SNR error F2 normal F SNRshort circuit or open
circuit
3 RT SNR error F3 RT SNRshort circuit or open
circuit
4 R SNR error F1 R SNRshort circuit or open
circuit
5 D SNR error F5 D SNRshort circuit or open
circuit
Check all
sensor’sconnection
6 F FAN error E1 no signal, More than 30s
˄exclude AC motor˅
cableˈIC driverˈTR
error˄cancelling for the
time being˅
7 C FAN error E2 no signal, More than 30s
˄exclude AC motor˅
cableˈIC driverˈTR
error˄cancelling for the
time being˅
8 Defrosting error
normal
Ed cannot reach 7ćˈ2 hours

CONTROL AND DISPLAY SYSTEM
ǃFast Freeze
This function is intended for retaining nutrients contained in the food stored in the freezer
by freezing the food fully within a short period of time.
Under the Unlock mode, the Fast Freeze button (E) may be tapped to display the Fast
Free icon (K) and activate the Fast Freeze mode. The Fast Freeze mode is activated and
NOTE: The Fast Freeze mode is not available under the AI mode.
will be stopped automatically after 3 hours. To quit the Fast Freeze mode, tap the Fast
Freeze button (E) again. The Fast Freeze icon (K) will disappear.
NOTE:When making ice, you may select Fast Freeze to speed up ice-making process
and quit Fast Freeze after the ice-making process is completed.
5
3
1
5
3
1
E
K
ǃFast Chill
This function is intended for retaining nutrients contained in the food stored in the refrigerator
by chilling the food to the desired temperature within a short period of time.
Under the Unlock mode, the Fast Chill button (B) may be tapped to display the Fast Chill icon (I)
and activate the Fast Chill mode. The Fast Chill mode will be stopped automatically after 3 hours.
To quit the Fast Chill mode, tap the Fast Chill button (B) again. The Fast Chill icon (I) will
disappear.
5
3
1
5
3
1
B
I


CONTROL AND DISPLAY SYSTEM
ǃTemperature Setting & Regulation
The default operation mode is AI.To set a temperature manually, the AI button (D) may be
tapped to hide the AI icon (L).
(See the AI Mode section on Page 14 for details)
emperature setting & regulation: This function is available only when the AI mode is
deactivated. The following instructions should be observed.
To set the refrigerator temperature: Under the Unlock mode(the display screen is on), the
refrigerator temperature control button (A) may be tapped. The refrigerator temperature
display (G) will glisten. Each time the refrigerator temperature control button (A) is tapped,
the refrigerator temperature will be adjusted to the next higher setting until Setting 5 (1°C) is
reached.Tap the button once more, the refrigerator temperature will return to Setting 1 (7°C).
The display sequence is as follows:
Setting 1 (7°C) – Setting 2 (5°C) – Setting 3 (3°C) – Setting 4 (2°C) – Setting 5 (1°C) – Setting
1 (7°C)
5
3
1
5
3
1
C
G
L
A
H
To set the freezer temperature: Under the Unlock mode(the display screen is on), the freezer
button (C) may be tapped. The freezer temperature display (H) will glisten.
Each time the freezer temperature control button (C) is tapped, the freezer temperature will be
adjusted to the next higher setting until Setting 5 (-22°C) is reached. Tap the button once more,
the freezer temperature will return to Setting 1 (-16°C). The display sequence is as follows:
Setting 1 (-16°C) – Setting 2 (-17°C) – Setting 3 (-18°C) – Setting 4 (-20°C) – Setting 5
(-22°C) – Setting 1 (-16°C)
temperature control
ǃDoor-open Alarm
When the door is kept open or not properly closed, an audible alarm will be given once for a
while until the door is closed.


CONTROL AND DISPLAY SYSTEM
ǃEconomic Display Control
The display screen will go dark 30 seconds after the operation of control panel is finished. The
display is restored when any control button is tapped or any door is opened. But such button
operation will not change the present setting of the refrigerator.
ǃRefrigerator On / Off Control
Under the Lock mode, hold the refrigerator temperature control button (A) 3 seconds to turn
off the refrigerator. The refrigerator temperature display (G) will disappear while the
refrigerator light will remain functional. Hold the refrigerator temperature control button (A) 3
seconds to turn on the refrigerator. The refrigerator temperature display (G) will illuminate
and the normal operation of refrigerator compartment will be resumed.
5
3
1
5
3
1
G
A
ǃBackup Memory
The temperature settings will be memorized and, in case of a power interruption, restored
after the power interruption is over.
