Kelon RD-42WC4SFY User manual

Service manual
Refrigerator (freezer) Double door serial
1
Refrigerator service manual
Double door serial
MODEL :RD-42WC4SFY(BCD-325WYHCE)

Service manual
Refrigerator (freezer) Double door serial
2
Content
1.Safety precautions ………………….………………………………………… 3~3
2.Specification…………………………………………………………………......4~4
3.Parts identification…………...………………………………………….………5~5
4.Refrigeration system diagram………….………………………….……….……6~6
5.Circuit diagram…………………………………………………………………6~6
6.Maintenance service and Troubleshooting …………..………………………. 7~10
7.Quality information report……………………………….………………...…11~11
8.Exploded view and part list………………………………………….…......…12~15

Service manual
Refrigerator (freezer) Double door serial
3
1.Safety precautions
Please read the following instructions before servicing your refrigerator.
1)Check the refrigerator for current leakage.
2)To prevent electronic shock, unplug before servicing.
3)Always check line voltage and amperage.
4)If you use any kind of appliance, check regular current. voltage and capacity.
5)Don’t touch metal products in the freezer with wet hands, this may cause frostbite.
6)Prevent water from following onto electric elements in the mechanical parts.
7)When tilting the refrigerator, especially the thin plates(ex. Glass shelf or books).
8)When servicing the evaporator, wear cotton gloves. This is to prevent injuries from the sharp
evaporator fins.
9)Leave the disassembly of the refrigerating cycle to a specialized service center. The gas inside
the circuit may pollute the environment.
10)Close the top door before opening the bottom door, Otherwise, you might hit your might hit
your head when you stand up.

Service manual
Refrigerator (freezer) Double door serial
4
2.Specification
Model No. RD-42WC4SFY(BCD-325WYHCE)
Type Bottom-mounted no-frost refrigerator/freezer
Capacity
Total/ (L/Cu.Ft.) 325(11.5)
Freezer/ (L/Cu.Ft.) 93(3.3)
Net
Refrigerator/ (L/Cu.Ft.) 232(8.2)
Performance
Climatic type (SN 、 N 、 ST 、 T) N, ST, T
Power V/Hz 220~240/50
Features
Temp. Control(Electronic/Mechanical) electronic
Defrosting(Automatic/Manual) automatic
Reversible Door yes
Handle(Recessed/Grip) grip
Lock no
Refrigerant R600a
General
Features
Foam Blowing Agent cyclopentane
Shelf (Material/No.) tempered glass / 4
Door Basket PS/6 (3big+3 small)
Interior Lamp yes
Vegetable Crisper yes
Vegetable Crisper Cover yes /2 small
Egg Tray yes
Can storage Dispenser no
Refrigerator
Compartment
Deodorizer optional
Star Rating 4-star
Ice Maker (Automatic/Twist/Normal) normal
Shelf (Material/No.) no
Drawer PS/4 (3big+1small)
Freezer
Compartment
Door Basket no
Dimensions
Width/mm 595
Depth /mm 664
Net
Height/mm 1960
Width/mm 648
Depth /mm 713
Packing
Height/mm 2025
Weight Net/Packing/Kg 86/94
Loading Capacity 20Ft/40Ft/40H.C. 27/54/71
End of Table.

Service manual
Refrigerator (freezer) Double door serial
5
3.Parts identification
[Refrigerator] [Refrigerator]
Control panel
Lamp port (Inside)
Air outlet
glass shelf
Vegetable drawer
Crispercover
Crisper
[Freezer]
Ice tray (Inside)
Drawer in freezer
Drawer in freezer
Caster
Door rack cover
Door rack
Egg rack (inside)
Door switch
Door rack
Door rack
[Freezer]
Note:
Due to the updated modifications of our products, your refrigerator may differ slightly from
this Instruction Manual ， but the functions and using methods remain the same 。

Service manual
Refrigerator (freezer) Double door serial
6
4.Refrigeration system diagram
when the refrigerator is just powered on. The refrigerant flows in the sequence: Compressor
Condenser Dry filter Capillary tube Evaporator .
5.Circuit diagram
The electronic-controller directly controls the start and stop of compressor and hence the
refrigerator temperature. The door switch directly controls the start and stop of the lamp.

Service manual
Refrigerator (freezer) Double door serial
7
6.Maintenance service and Troubleshooting.
DEFECT EFFECT CAUSE REMEDY
Group
partially or
completely
out of
refrigerant
charge
Evaporator dose not frost even though
motor-compressor runs continually.
An empty refrigerant system indicates
a leakage of R600a.this loss is
generally to be looked for at the
soldering points connecting the
various components or in an eventual
hole in the evaporator made by the
user.
Leakage must be
eliminated by
re-soldering the
defective point or
substituting the
damaged
evaporator.
Excessively
full
This defect is indicated by the presence
of water outside refrigerator near the
motor caused by formations of ice on
the return tube.
If in the refrigerant system a quantity
of R600a is introduced which is
greater than that indicated, the excess
gas dose not terminate its expansion
in the evaporator but proceeds into
the return tube.
The system must be
emptied and
subsequently refilled
introducing the
correct quantity of
R-600a.
Humidity in
the system
This defect is indicated by the partial
frosting of the evaporator and by
continual defrosting cycles determined
by the interruption of the flow of gas on
the evaporator. the motor compressor
keeps running.
The refrigerant system is humid when
there is a small percentage of water
present which not completely retained
by the dehydrator filter, enters into
circulation with the Freon and freezes
at the capillary exit in the evaporator.
The system must be
emptied and then
refilled after
eliminating the
humidity.
Presence of
air in the
system
Poor performance of the refrigerant
system which is indicated: on the
evaporator with a slight frost which
dose not freeze and an excessive
overheating of the condenser and
motor-compressor.
There is air in a refrigerating system
when during the filling phase vacuum
is not effected or it is not adequately
done.
Group must be
drained and
subsequently refilled
after carefully
creating vacuum.
Blocked
capillary
Because of the lack of circulation Freon
in the system, there is no frosting of the
evaporator, while a slight overheating
of the first spiral of the condenser is
noted.
Eventual impurities contained in the
Freon or in the components of the
refrigeration system before assembly
and not retained by the filter can
obstruct the capillary.
To restore the system
it must be emptied,
substitute the
capillary or the
evaporator entirely
in case the capillary
is coaxial with
respect to the return
tube, then refill it.
Motor
compressor
short-circuit
ed or
blocked
The system dose not work and the
“clixson” intervenes interrupting
delivery to the motor- compressor.
In case of short circuit the breakdown
is due to the electric winding if
blocked, there is a mechanical failure
in the motor-compressor.
The
motor-compressor
must be replaced
and then proceed
with refilling.
Motor-com
pressor
dose not
No frost forms on the evaporator even if
the motor-compressor is apparently
running regulary
In this case there is a mechanical
failure in the diaphram valves which
remaining continually open, do not
The
motor-compressor
must be replaced

Service manual
Refrigerator (freezer) Double door serial
8
compress permit the piston to suck and
compressor the which consequentely
dose not circulate in the system.
and then proceed
with refilling.
Noisy
motor-comp
ressor
In case of mechanical failure in the
motor-compressor there in an excessive
noise when the system is functioning in
case a suspension spring is unhooked
banging will be heard and there will be
especially strong vibrations when the
system starts up and stops.
The cause of the excessive noise is
normally to be sought for in a
mechanical break down and only
rarely in the unhooking of one of the
suspension springs.
The
motor-compressor
must be substituted
and then proceed
。
NO COOLING
The compressor
doesn’t run
Check the current flowing of
starting system
Shorted broken Replace the device
Check if the current flows at the main
coil of the compressor
Coil shorted
Replace the compressor
Check the components on the main
circuit
Replace the
components
Check if the current flows at the
contacting point of the thermostat
Poor contacting point Replace the thermostat
P
oor running of
the compressor
Check if the current flows at the
contacting point of the starting
system
P
oor contacting
point and broken
Replace the device
Replace the compressorShorted
Check if the current flowing of
the sub coil of the compressor
Replace the compressor
The coil of the compressor
motor is worn out
I
s the current amount of the
electric components normal
Increase the voltageLow voltageMeasure the starting voltage

Service manual
Refrigerator (freezer) Double door serial
9
YES
NO
YES
NO
NO
NO
YES
YES
NO
YES
compressor runs Frost doesn’t form at the evaporator
when operating set for more than
30min
Repair the
compressor
Refrigerant leaks poor
compressing
Power source separate the PTC-starter from the
compressor and measure the voltage
between M and C of the compressor
Equal to the applied
voltage(rating voltage ±10%)
The applied voltage is not in the
range of rating voltage±10%
Advice the customer to use in
the fixed
Check the
resistance of the
compressor
Test the resistance among M-C, S-C,
and M-S.
Replace the compressor
Check the
resistance of the
PTC
Test the resistance of the both
terminals in the PTC-STARTER
Replace the PTC-STARTER
Check OLP Check if applying a
regular OLP
OLP works within 30sec, in forcible
OLP operation by turning instant
power on and off Replace OLP
Check the
starting state
Measure minimum starting voltage after
checking steps1~3 above. And measure
the pressure balance of the PTC with the
interval of more than 5 min
Starts at the voltage
of 85% below Normal
Starts at the voltage of more than 90% Check the starting
state at the regular
Normal.
Replace the PTC
1
2
4
2
3
5
5
5
4
4
3
3
4

Service manual
Refrigerator (freezer) Double door serial
10
PTC
NO
YES
Poor starting or
no operating of
the compressor
First, separate the PTC from the compressor and
check the voltage between NO 5 and 6 in the
PTC with a multitester or Wheatstone bridge
Normal. Check another
electric component
The value is in the range of
14-28 for the 22 ΩPTC
The value is 0 Abnormal Replace the PTC
Separate the OLP from the compressor
and check resistance value between
two terminals of OLP with tester
The value is ∞Abnormal Replace the PTC
Check another electric
components
Replace OLP