Haier HRB-271, HRB-306, HRB-331, HRB-331MPE User Manual
CAUTION
READ THIS MANUAL CAREFULLY TO
DIAGNOSE TROUBLE CORRECTLY
BEFORE OFFERING SERVICE
Refrigerator
SERVICE MANUAL
MODELS :
HRB - 271
HRB - 306
HRB - 331
HRB - 331MPE
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.
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
1
2
5
6
7
11
12
14
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.
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
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.
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
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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.
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
SAFETY PRECAUTIONS
It is absolutely prohibited to put inside
the appliance hazardous inflammable
or explosive articles,strong corrosive
acid,alkali,etc.
Do not store or use gasoline or other
flammable article in the vicinity of the
refrigerator to avoid fire.
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 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 play by hanging on its door, to
prevent tilting the door or toppling the
refrigerator to hurt person.
Do not place heavy or unstable articles
or water containers on top of the
Refrigerator.
3
SAFETY PRECAUTIONS
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.
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.
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.
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.
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5
PARTS IDENTIFICATIONS
Cover Lamp
Ref
Shelf
Assy Cover
Vegetable Box
Vegetable Box
Ice Tray
Ice Bin
Half Drawer
Middle Drawer
Door Rack
Bottle
Separator
Bottom Drawer
6
DISASSEMBLY
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.
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7
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
8
DISASSEMBLY
DISPLAY COVER (MPE Model Only)
1.To remove the cover of the display panel,
Loosen screw fixing the display panel to the door.
M/F DUCT
To remove the cap screw.
1.Loosen screw fixing the m/f duct to the body.
2.Take out the m/f duct.
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9
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.
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CONTROL AND DISPLAY SYSTEM
1.The function of key
A1 A2 A3
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.
A4
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.
11
REFRIGERATION PRINCIPLE
1.
System flow chart
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
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