Haier HRB-271 User manual

CAUTION
READ THIS MANUAL CAREFULLY TO
DIAGNOSE TROUBLE CORRECTLY
BEFORE OFFERING SERVICE
SERVICE MANUAL
Refrigerator
Features :
1. Optimized condensing system.
2. Pre-cooling for defrosting for freshness storage.
3. Intelligent operation for automatic operation.
4. Automatic problem detecting and warning system,
door cooling warning system.
MODELS :
HRB - 306
HRB - 331
HRB - 271
HRB - 331MPE

CONTENTS
CONTENTS
SAFETY PRECAUTIONS.
SPECIFICATIONS.
PARTS IDENTIFICATIONS
DISASSEMBLY.
Refrigerator door ( Gasket ).
Freezer door.
Lock Supporter.
M / F duct.
Louver freezer.
CONTROL AND DISPLAY SYSTEM.
The function of key.
The control of key.
REFRIGERATION PRINCIPLE
System flow chart.
System flow serograph.
CIRCUIT DIAGRAM
Brief principle diagram.
PCB diagram.
TROUBLE SHOOTING.
No cooling.
The compressor doesn’t stop
Cooling capacity is insufficient
The compressor doesn’t stop.
Normal phenomena-Not trouble for refrigerators.
Three essentials for checkup.
Analysis of troubles and troubleshooting.
EXPLODED VIEW
SPARE PARTS LIST.
7
6
5
2
1
11
12
14
16
42
44

SAFETY PRECAUTIONS
This appliance uses 220-240V / 50Hz Ac for power Supply
failure in operation and damage to the control panel.
the moisture of the compressor will occur if voltage is
outside the range 187-242V unless a regulator
with a capacity 750W or higher is installed
It is required to use separate dedicated outlet with
securely grounding
The power cable of this appliance is fixed with three-core
(grounding) plug complying with three-core (grounding)
outet. In no case should the third plug pin ( grounding )
of the power cable be cut or removed
In case of damaged power cable
when the power cable or plug has been warned is
profiled to continue to use il in this case. It is required
t re la e t y cor athiz d e ie h po pc i b fa t y u or e srv c so.
When there is leakage of inflammable gas
Close the valve of leaking gas
Open doors and windows
Neither try to drag nor insert any power plug for
any electrical unit such as refrigerators.
Do not damage power cable
Be sure not to pull out the plug on the appliance
By drawing the power cable. Be sure to directly pull
Out it on the outlet by rigidly grasping the plug.
Do not cause the appliance body press the power
Cable, nor should any people lead on it.
When moving the appliance from wall, be careful
Not to roll or damage power cable.
Please pull out power plug under the following
situations:
Pull out power plug prior to cleaning or repairing
When replacing damaged lamp.it is required to pull
out power plug to prevent electrical shock
2

3
It is absolutely prohibited to put inside
the appliance hazardous inflammable
or explosive articles,strong corrosive
acid,alkali,etc.
Do not keep medicine,vaccine,or
chemical reagent in the appliance.This
refrigerator is for household use,which
cannot store item with strict requirement
for temperature.
Do not store or use gasoline or other
flammable article in the vicinity of the
refrigerator to avoid fire.
Do not place any electrical plugs,
Regulators or microwaves on top of the
Refrigerator. Do not use electric
appliances (Expect those allowed by
manufacturer) inside the refrigerator.
Do not place heavy or unstable articles
or water containers on top of the
Refrigerator.
Do not play by hanging on its door, to
prevent tilting the door or toppling the
refrigerator to hurt person.
SAFETY PRECAUTIONS

4
When the refrigerator has started
Running ,take care not to touch the cold
surface of the freezer compartment with
hand,especially with wet hand.
Otherwise, your skin is liable to be stuck
on the cold surface.
It is strictly prohibited to privately
dismantle or change the appliance.
For the repair of refrigerator, it can be
carried out by professional only.
At no power supply or when carrying
out cleaning, it is required to pull out the
power plug, and to wait atleast 5
minutes for switching ON it again to
prevent damaging its compressor by
continuous starting.
Do not spray water onto the refrigerator,
or place it in wet area susceptible to be
splashed with water, so as to avoid
influencing the electric insulation
performance of the appliance.
Do not put the bottled beer or beverage
in the freeze compartment to prevent
frost crack.
When the appliance is to be discarded,
dismantle its door, as well as its door
gasket to avoid accident occurred when
a child goes inside for playing.
SAFETY PRECAUTIONS

IOPOSIT N HighMiddle MiddleHighMiddleElectronic
Mod ameel NHRB-271MPR -271MLH B HRB-271RLHRB-306MPHRB-306ML RH B-331MPE
Capa ty (Gross
ci Vol.) 240 240 240 275275 300
Ref i ato
rger r159159 159 194194 219
Freezer 8181 81 818181
Cubeeasurement M 0.61 1
0.6 0.61 0.67 0.67 0.71
ons
Packed Dimensi0x690x
59 1570590x690x1570 590x690x1570 590x690x1730590x690x1730 590x690x1840
o ( )
Pr duct Dimensions WxDxH (mm)575x680x1550 575x680x1550 575x680x1550 575x680x1710575x680x1710 575x680x1820
et ei KN W ght ( g)49 49 49 56.5 56.559.5
es & on
Featur Cveniences
ype O ooli
T f C ng Fr t FroseeFrost FreeFrost FreeFrost FreeFrost FreeFrost Free
Refrigerator Cabinet
Ref p Control Temh (InsMecide)Mech (Inside)Mech (Inside)ech (InsM ide)Mech (Ins e)
id Elect. (outsi )de
Cabiet shelfn 2 (Glass)2 (Wire)+ Trim (Blue) (
2 (Wire)+ TrimBlue) 3 (Glass)3 (Wire)+ Trim (Blue) s
3 (Glas)
Cri pers 1 (GPPS, Transparent)S1 (GPP , Transparent) ( P S, Transparent)
1GP1 (GPPS, Transparent)P S Tr parent)
1 (G P , ans S
1 (GPP , Transparent)
Crisper cover 1 (GPPS, Transparent)Spar1 (GPP , Trans ent) 1 ( P S, Transparent)
GPS1 (GPP , Transparent)P S, Tr parent)
1 (G P ans S par
1 (GPP , Trans ent)
um i
H idity Control Str pYes (2) Yes (2) Yes (2) Yes (2) Yes (2) Yes (2)
ato BTom in Sr1 (GPP , Transpa ent) --P S Tr parent)
1 (G P , ans -P S, Tr parent)
1 (GPans
ght
Interior Li Insiack(14)de,B Ek
Inside,Bac (E14)Insi ack 14)
de,B(Ek
Inside,Bac (E14)i ack 14)Ins de,B(Eik )Insde, Bac (E14
VC-FreshYSE YES S
YE YSE NOYES
eod i on
Dorzati ON NONOON NOON
Atable Thermos ontrol
djustat CCont ol hand (in fridge)
r by t
Conrol by hand (in fridge) ont
Crol by hand (in fridge) Cont ol by hand (in fridge)
r ont ol
Cr by hand (in fridge) Cont ol by hand (in fridge)
r
Refrigerator Door
Door PanelPM/V M
CCPainted Painted PM/VCM
CPainted VM/PCM
C
Door Rack Upper1 (GPPS, Transparent) S r
1 (GPP , Transpaent)1 ( PS, Transparent)G P S
1 (GPP, Transparent) PS Tr parent)1 (G P , ansS1 (GPP , Transparent)
Door Rack Big1 (GPPS, Transparent)S par )
1 (GPP , Trans ent1 ( P S, Transparent)
GPS
1 (GPP, Transparent) (P S, Tr sparent)
1 G Pan S par
1 (GPP, Transent)
oor
D Rack Bottom S
1 (GPP , Transparent)P S Tr parent)
1 (GP, ans 1 (GPPS, Transparent)S par
1 (GPP, Transent)1 ( P S, Transparent)
GPS r parent)1 (GPP, T ans
Egg Tray S ar
1 (GPP , Transpent)1 ( P S, Transparent)
GP1 (GPPS, Transparent)PS Tr parent)1 (G P , ans1 (GP S, Transparent)
PPS, Tr parent)1 (G P ans
al ii
H f Wdth Bn---(P S, Tr nsparent)1 G P a1 (GPPS, Transparent)3 ( P S, Transparent)G P
al i i overH f W dth B n C---1 ( P S, Transparent)
GP1 (GPPS, Transparent)1 (GP S, Transparent)P
Handle Yes (wth chrome deco)i o)
Yes (with chrome decY (w hr e deco)
esith c om Yes (with chrome deco) ( o)
Yeswith chrome deco)
Yes (with chrome dec
Handpele TyOutside uts
Oideuts
Oideuts
O ide Outside uts
Oide
Ref i ato Door ask
rgerr G et Knock DownK Dnnock ow K k D nnoc ow D nKnock owKk D nnoc ow K D nnock ow
Lock 1 (for both door)1 (forth door bo)1 (for both door)1 (for both door)1 (for both door)1 (fordoor both )
Braond Log Logo Logogo
Lo Logo Logo Logo
e C
Fr ezerabinet
ef
D rost Type Frost Free F t Fr
ros ee Frt Fr
os ee FFrost reeFrost Free F t F
ros ree
abi hel
Cnet S f -2 (Wire)2 (Wire)-2 (Wri e)-
e Tray
Ichi2 (PP
, W te) 2 (P hiP
, W te)2 (P hiP, W te)2 ( hiPP
, W te) 2 (P hiP
, W te) 2 (P hi
P
, W te)
e Mak s yTwist Ic er A sembl ( IP e)1 H S, Opaqu1 (HIPSpaque)
, O1 (HIPS, Opaque) 1 (HIPS paque), O 1 (HIPS, Opaque) 1 (HIPS paque), O
Ice C i
ube B n 1 ( IPSpaque)
H , O1 (HIPS, Opaque)1 (HIPS, Opaque)1 (HIPSpaque)
, O1 (HIPS, Opaque)1 (HIPS Opaque)
,
Ice-C eam oxr B1 (GP S, Transparent)P --1 (GPPS, Transparent) -1 (GPPS, Transparent)
Middl rawer
e D 1 (GPPS, Transparent)--1 (GPPS, Transparent)-1 (GPPS, Transparent)
B tom Drawoter 1 (GPPS, Transparent)1 (Wire) 1 (Wire) 1 (GPPS, Transparent)1 (Wire) S
1 (GPP , Transparent)
Freezer Compartment erior ght
Int Li No No No NoNo No
e DFr ezer oor
oor P
D anel PCM/VCM PaintedPaintedPCM/VCM PaintedVCM/PCM
oor RD ack------
andH leYS
EYES S
YEYS
EYES YES
and peH le TyOutsde
isOut ideutsO ideOutside utsO ideOutside
F er oor G et
reez D ask Knock Down D n
Knock ow D n
Knock ow Knock DownK D nnock ow DKnock own
Other
Bk Panelac Steel Steel Seel
tSteel Steel Steel
Eterior Appear e/Installationx anc
Table op/U-shell
tU-Shell -
U Shell -S l
U helU-Shell -S
U hell -
U Shell
Exterior Door Design ePr ssedP e edr ssePr ssed P e edr ss Presed
sP e edr ss
ear CR ompressor Cover NoNoo
NNooN No
e Lev egsAdjustabl eling l 2 Fr t
on 2 Front 2 Front 2 Front 2 Front 2 Front
olR lers 2 Back 2 Back2 B kac2 Back 2 Back 2 Back
S ver-Moonil Sver-Pil aint Burgundy-Red Sver-H neil airliSlver-Pnti ai seelStainles St
Note: A aier, Imp ovement is a con inuos pr pecification ge anytime withou rior otice
t H r t ocess, S s may chan t p N
O
CLOR
HRB-2 1
7HRB-3 6
0
5

6
PARTS IDENTIFICATIONS
Ice Tray
Ice Bin
Half Drawer
Middle Drawer
Bottom Drawer
Assy Cover
Vegetable Box
Vegetable Box
Shelf
Door Rack
Cover Lamp
Ref
Bottle
Separator

44 7
REFRIGERATOR DOOR
1.Remove the hinge cover by pulling it up.
2.Loosen hexagonal bolts fixing at upper hinge to the body and lift the
refrigerator door
3.Pull out the door gasket to remove from the door foam Ass'y.
DISASSEMBLY

8
DISASSEMBLY
FREEZER D OOR
1.Loosen bolts fixing the hinge M to the body and lift the freezer door.
2.Pull out the door gasket to remove from the door foam Ass'y.
LOCK SUPPORTER
1.Loosen screw fixing the lock supporter to the body.
2.To remove the lock supporter, pull out it as shown in figure.
SCREW
LOCK SUPPORTER

44 9
M/F DUCT
1.Loosen screw fixing the m/f duct to the body.
To remove the cap screw.
2.Take out the m/f duct.
DISPLAY COVER (MPE Model Only)
1.To remove the cover of the display panel,
Loosen screw fixing the display panel to the door.
DISASSEMBLY

10
DISASSEMBLY
LOUVER FREEZER
1.Loosen top screws fixing the louver freezer to the body.
2.Take out the louver freezer and disconnect the lead wire from the plug.
3.Loosen lower screws fixing the louver freezer front to the louver freezer back
and separate them.
4.Loosen screw fixing the bracket fan motor to the louver freezer back.

11
1.The function of key
1.1 The refrigerator temperature set of key A1:Set refrigerator temperature;
1.2 The time set of key A2:Set hour and minute;
1.3 Super freeze set of key A3:Get into and exit the super freeze state;
1.4 Fuzzy /energy saving/close LED of key A4:Get and exit the fuzzy and energy
saving states and close LED.
2.The control of key
2.1 The refrigerator temperature set:Press the key A1 once ,the numerical value of
refrigerator temperature set begins to flicker ,and get into the refrigerator
temperature set state . Press the key again ,the numerical value of refrigerator
temperature will add 1 . But if the temperature is 10 degrees now, after a more
press it will turn to be 2 degrees. The process is a cycle.
2.2 Time set*Press the key A2 once , the numerical value of hour begins to flicker
, and get into the hour set state .Press the key again ,the numerical value of
hour will add 1 . But if the hour is 23 now , after a more press it will turn to be
00. The process is a cycle . 5 seconds later after the number of “hour” is set,
the number will stop glittering. Meanwhile the number of “minute” begin to glitter,
one more press will increase the the number with one. If the number is 59, one
more press will turn it to be 00. it is a cycle too. 5 seconds later it will be finished
to set the number of “minute”.
2.3 Super freeze set :Press the key A3 once ,the icon of super freeze lights on ,and
get into the super freeze of state ;Press the key again , he icon of super freeze
lights off ,and exit the super freeze of state .
2.4 Fuzzy and Energy saving set : Press the key A4 once. The fuzzy lights on and
get into the state of fuzzy . Press the key A4 again , the icon light of f and exit
the state of fuzzy .At the same time ,the icon of energy saving light on and get
into the state of energy saving .Press the key A4 third , the icon of energy saving
light off and exit the state of energy saving. The process is a cycle.
A1 A2 A3 A4
CONTROL AND DISPLAY SYSTEM

1.System flow chart
12
REFRIGERATION PRINCIPLE
The Refrigeration system of cooling belongs to the category of a
single-temperature and single-control refrigerating system with one
evaporator and is controlled by a single temperature control

13
2. System flow Chart
Compressor
Evaporation tube
Heatingpipe
Condensor
Filter
Suction pipe
Defrost heater
Evapaorator
REFRIGERATION PRINCIPLE

CIRCUIT DIAGRAM
14

15
TROUBLE SHOOTING
D
1 No cooling
11
Block by ice or dirty
things,change filter and change
refrigerant again.
YES
NO
No cooling
YES
NO
Refrigerant
leak, check and
repair charge
refrigerant again.
Check and repair according to
the section of "the compessor
doesn't work".
Switch OFF the
Refrigerator and again
switch ON after 5 min.
Is Compressor Start ?
If compressor
can run naturally and
temperature rise
of condenser is
very low

16
2 The compressor doesn’t stop
NO
YES
YES
NO
Compressor doesn’t stop
Does the refrigerator
Cools the Food stuff ?
NO
NO
Check and repair according to
the section of "No cooling".
Adjest and instruct
cosumer how to use
Is cooling capacity
not sufficient
Check and repair according to
the section of “ cooling capcity
is insuffcient”.
Check and repair the
main control panel
Is the Defrost Buttom
Low Cooling
Working ?
High Cooling
NO
YES
Repair/replace
Defrost Buttom
Is Thermostat
Working ?
Repair/replace
Thermostat.
NO
Is Thermostat
set at MAX.
Position ?
YES
1. Is the
the ambient temperature
is very high or the refrigerator is
near by heat resource.?
2. The door was opened too many
times or there are more
fresh food inside?
YES

17
3 Cooling capacity is insufficient
YES
Repair & Recharge
Does the refrigerant
leak slowly?.
No
YES
Cooling capacity is
insufficient
Is the ambient
temperature lower then
o
16 C
Check the thermostat is
correct ?
YES
Adjust and instruct the consumer
How to use
the compressor.

18
4 The compressor doesn’t work
Check If thermostat is
correct ?
Check the power
source and power
cord?
Does the I/P
Power has 220V
power
Supply
Check and repair the
Input power supply
Check and repair
compressor and accessory.
YES
Is the Ambient
Temperature Lower than
o
16 C
Does
Bulb glow
when the door is
Opened?
The compressor doesn't
work.
YES
NO
YES
NO
Adjust and instruct
Consumer about uses.
NO
The Refrigerator

19
5 Normal Phenomena’s Not Troubles for Refrigerators
In a domestic refrigerator, there is not only a complicated electric control
system, but also a refrigerating system that is difficult to discern whether it
is in a good working condition. Both the systems are related and affect
each other. If a certain part of a refrigerator works abnormally, Its
refrigerating efficiency will decrease, operation properties will become
unstable ,or even it cannot be used normally for those serious cases.
Refrigerators are generally of larger volume ,once troubles appear ,to
send them to a service department is really a tough thing ,if such is the
case ,the user will always be in suspense ,sometimes normal phenomena
will be erroneously regarded as troubles .Therefore ,before we deal with
the topics of frequently occurring troubles of refrigerators and their
remedies ,we should firstly give a brief account of some normal
phenomena which are not troubles .In case any one of such phenomena
occurs ,there is no need to worry about it ,and the user can use it at total
ease .
1).When the compressor of a refrigerator has just stopped running ,a
rumbling sound can be heard from inside its evaporator .This is a sound
caused by the flowing of refrigerant in the evaporator tubing .Because the
pressure difference is still greater after the compressor has just stopped
running ,the refrigerant will flow for a certain time , therefore ,this sound is a
normal phenomenon.
2).A click sound can often be heard from the refrigerator .This is a
normal sound produced by the pull-in or release of the armature of a
current deadweight start relay when starting the compressor .The
compressor motor will produce a slight and uniform sound while it is
running .This sound is not easy to be heard in the daytime ,but of course it
can be heard distinctly at night.
3).The compressor consists of an electric motor and a compressing
apparatus. During its normal operation ,the motor!s stator core and
windings will rise to a temperature in the range of 1o
00 C
~1 o
10 C
,and the
temperature of the piston and cylinder of the compressing mechanism can
also reach as above 1o
00 C
due to the heat produced when compressing
refrigerant .Most of the heat radiates to the air through the compressor
casing ,therefore its casing is generally at a temperature between o
85 C~o 90 C
It is very hot ,particularly in summer when the ambient temperature is
higher .All these are normal phenomena .
4).For the direct cooling refrigerator ,a kind of irregular crack sound can
be often heard when the compressor is running for a certain period of time
or has just stopped its running .This sound is caused by the stress relief
due to expansion and contraction when temperature changes ,and will not
affect the normal action of refrigerator