Acqua GY-NE255FR User manual

REFRIGERATOR
Service manual
NO FROST
MODEL: RS-30WC4SFY
NOTE: product specifications are subject to change.
REFRIGERATOR
Service Manual
NO FROST
MODEL: GY-NE255FR
REFRIGERATOR
Service manual
NO FROST
MODEL: RS-30WC4SFY
NOTE: product specifications are subject to change.

1
■ Contents
Parts Description.......................................................................................................................................................... 1
Circuit diagram............................................................................................................................................................ 2
Cooling diagram.......................................................................................................................................................... 2
The guide for Disassembly Common parts of Refrigerator......................................................................................... 3
◆The instruction of replacing the main board and display board..................................................................... 3
◆The instruction of of replacing fan motor...................................................................................................... 4
◆The instruction of replacing temperature control capillary tube ................................................................... 4
◆The instruction of replacing evaporator temperature sensor.......................................................................... 5
◆The instruction of replacing PTC Starting relay and Overload protector. ..................................................... 5
Troubleshooting:.......................................................................................................................................................... 6
◆The solution for digital display code problem:.............................................................................................. 6
◆The common problem judgement method..................................................................................................... 9
◆The solution for the common problem..........................................................................................................11
Note: .......................................................................................................................................................................... 13
Exploded view:.......................................................................................................................................................... 13
Parts list:.................................................................................................................................................................... 18
■ Parts Description
01.Top cover supporting assembly
02. Upper drawer
03. Middle drawer

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04. Middle drawer
05. Lower drawer
■ Circuit diagram
■Cooling diagram

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■The guide for Disassembly Common parts of Refrigerator
◆The instruction of replacing the main board and display board.
Unscrew the top
Cover’s screws
Remove the top cover
Replace the display
board

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Remove the electron
box cover and replace
the main board.
◆The instruction of of replacing fan motor
Remove the wind
channel plate in
freezer chamber.
Put off the foam
Unscrew the
assembly of fan motor
◆The instruction of replacing temperature control capillary tube .
Open the sensor
cover with you finger

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Put off the sensor
cover and replace the
sensor
◆The instruction of replacing evaporator temperature sensor
Remove the wind
channel plate in
freezer chamber and
foam
Remove the screws
of Cover Board
of Wiring Area. Then
you can easy to
replace the
evaporator
temperature sensor
◆The instruction of replacing PTC Starting relay and Overload protector.
The location of the
PTC Starting relay
and Overload
protector.
take down Spring
Tap and Cover.

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Disconnect the
connecting wire of the
PTC Starting relay
and Overload
protector.
■TROUBLESHOOTING
◆The solution for digital display code problem:
There are total 2 sensors，one is near Evaporator which can be only seen when open wind channel plate
in freezer chamber,this is evaporator temperature sensor. The other is in Freezer Chamber room，
touching the temperature, which is temperature control capillary tube(the temperature sensor inside the
cabinet).
Considering the Sensor connecting or cutting problem, in order to check the problem easier, we get the
display error to distinguish the problem when we design the product.
When the digital display window shows ‘E1’ that means the circuit of the temperature sensor inside the
cabinet is open circuit or short circuit,
When the digital display window shows ‘E2’ that means the circuit of the defrost sensor(evaporator
temperature sensor) is open circuit or short circuit.
The digital display window shows ‘E3’ that means the temperature sensor inside the cabinet and the
defrost sensor occur both fault.
Both sensors are connected on the main board which realize the connection. So when display shows
Erro problem, we need to check the sensor itself have problem or not，meanwhile, need to check the
connect well or not between the sensors and main board.
Detail method show below:
The testing method of sensor：
Using the multimeter with the ohm switch to measure the resistor of sensor, normally at surrounding 25℃
the resistor should be about 2kohm and every with the temperature decreases 1℃the corresponding
resistor value would increase about 45ohm.If the measured value is not within the normal scope, the
sensor is bad and needs to repair or change.
The solution for “E1”problem
Open the door and put out the drawer

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The location of the sensor inside the cabinet
Open the sensor cover with you finger
Put off the sensor cover
Using the multimeter with the ohm switch to measure
the resistor of sensor, if sensor is bad ,change a new one.
Or else ,go on next step.
Measure the resistor of plug, If the resistance figure shows
infinity, that means connection between the main board and
plug have problem.

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Unscrew the top Cover’s screws
Remove the top cover
Remove the electron box cover
Checking the connection of main board have problem
or not.
The solution for “E2”problem:

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Open the door and put out all the drawers
Remove the wind channel plate in freezer chamber.
Put off the foam
The location of the evaporator temperature sensor always
fixed on the suction tube as attached (sometimes it fixed on
the right middle of the evaporator).
Take off the evaporator temperature sensor ,and Measure the
resistor , if sensor is bad ,change a new one.
Meanwhile, measure the resistor of wire plug, If the resistance
figure shows infinity, that means connection between the main
board and wire plug have problem. the detail method as
above.
The solution for “E3”problem:
According to above two principle, to check both above
◆The common problem judgement method
Problem Cause
Refrigerator can’t 1.1 Is the power cord connecting well？

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start 1.2 Is the power voltage too low？
1.3 Is the sensor irrational setting?
1.4 Is the ambient temperature too low?
1.5 Is the circuit on power?
1.6 Is there some default in compressor
1.7 Is the refrigeration system blocked by ice or dirty, please stop the unit and
restart after 10 minutes to see if the compressor can start.
Weak cooling effects
2.1 Is there any heat source around the refrigerator?
2.2 Is there enough space around the refrigerator for rejection of heat?
2.3 Is the setting of the temperature appropriate?
2.4 Is there too much food or overheating food in it?
2.5 Does there open the door frequently?
2.6 Is the door completely closed?
2.7 Does the gasket destroyed or distort?
2.8 Does the gas leak?
The unit can not stop
running
3.1 Is there any heat source around the refrigerator?
3.2 Is there enough space around the refrigerator for rejection of heat?
3.3 Is the setting of the temperature appropriate?
3.4 Is there too much food or overheating food in it?
3.5 Does there open the door frequently?
3.6 Is the door completely closed?
3.7 Does the gasket destroyed or distort?
3.8 Is the thermostat good operation?
3.9 Does the gas leak?
Ice up in the freezing
chamber
4.1 Is the setting of the temperature appropriate?
4.2 Is there multi-moisture food and too close to the back wall of the refrigerator?
4.3 Is the ambient temperature too low?
4.4 Is the electric parts on good condition, specially the thermostat wich will
cause the unit non-stopping .
Abnormal noise
5.1 Is the refrigerator stably placed?
5.2 Does the refrigerator bump other objects?
5.3 Whether the internal accessory of the refrigerator is in the right place.
5.4 Whether the water plate of compressor is fall from the unit.
5.5 Does the tube of the refrigeration system bump each other?
5.6 The noise sound likes Water flow inside the refrigerator ,in fact ,it is normal,
which is caused both when refrigerator start and shut-down; in addition,
frost-dissolving causes this sound, too, which is a normal phenomenon.
5.7 There will be a cracking sound in the cabinet ,when the cabinet or cabinet
accessory contracting or expanding, this sound will be made, which is normal.
5.8 The motor operation sound in the compressor is appears to be louder at night
or begin starting. which is a normal phenomenon; also the uneven placing would
lead to too much running noise.
There is a peculiar
smell in the units
6.1 Is the food with special smell sealed tight?
6.2 Does it have long time storing food or degenerated food?
6.3 Whether the internal cabinet needs cleaning.
the forefront or the
middle cabinet heats
7.1 As fridge Anti-condensation tube is placed here and caused the above
phenomenon, which is normal.

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Refrigerator’s two
sides or the back
heat
8.1 As condensation tube is placed here and caused the above phenomenon,
which is normal.
the cabinet surface
condensation 9.1 Air humidity is too large.
◆The solution for the common problem.
1.Cooling is not enough good
(Many reasons might cause that cooling not enough good, as blow :)
Reason analysis Solutions
1) Leakage of Gas
If some gas leaked unit will work not well.
Phenomenon of failure:
a. lower pressure of liquid cycle system
b. high temperature of copper tube of
discharging gas, hand feels very hot.
C. much noise, sounds like “ZZZZZ”, comes
from outlet of capillary.
d. the temperature fell down very slowly.
First find out the point of leaking
on tube, and then sealed it,
vacuuming it, finally recharge with
Gas.
Note:
If you find oil on somewhere, it is
possible that leakage point is
there.
2) The quantity of
Gas is too much
If too much Gas was charged into the cycle
system, the extra gas will occupy some
space of evaporator, so that the area of heat
exchange becomes less, unit will work not
well.
Phenomenon of failure:
a, higher pressure of liquid cycle system
than norm.
b, higher temperature of condenser.
c, larger electric current of compressor
d, there maybe ice on the suction tube.
e, when gas is too much, some gas liquid
might goes back into compressor,
compressor will be damaged by liquid.
First stop unit for several minutes,
and then open charging tube,
discharge all of gas. Change a
new filter, and then recharge gas,
finally sealed the system.
3) There is air in the
liquid cycle system
The air in system will cause lower efficiency
of cooling.
Phenomenon of failure:
a, higher pressure of liquid cycle system
than norm, but the pressure is not over the
limit.
b, higher temperature of discharging tube.
C, much noise
First stop unit for several minutes,
and then open charging tube,
discharge all of gas. Change a
new filter, and then recharge gas,
finally sealed the system.
4)Low working
efficiency of
compressor
General when a compressor works for many
years, some parts of compressor were wear,
so that compressor discharge less gas out,
unit does not work strongly.
Phenomenon of failure:
a, lower pressure of discharging, check the
Change a new compressor.

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pressure of system with pressure meter to
see if it is normal.
b, higher temperature of compressor
surface.
C, cut off the discharging tube, to see if you
can block the gas coming out of the tube
when compressor is working.
5) There is something
that blocked the liquid
cycle system
Some time there is something blocked the
filter of liquid cycle system, so that unit is not
cold.
Phenomenon of failure:
a, lower pressure of discharging
b, lower temperature of discharging.
Change a new filter
2.NO COOL
(Popular failure reasons are below):
Reason analysis Solutions:
1) Leakage of gas
Phenomenon of failure:
a, leaking fast
b, leaking slowly
c, no voice of liquid flowing
d, cut off charging tube, no gas
goes out.
First find out the point of leaking on tube,
and then sealed it, vacuuming it, finally
recharge with gas.
Note：
If you find oil on somewhere, it is possible
that leakage point is there.
2)There is some thing
that blocked the liquid
cycle system A,Ice blocking
Sometime because unknown
reason water comes into liquid
cycle system, the capillary will be
blocked by water after unit runs for
period of time.
Phenomenon of failure:
The unit works well in the
inception, after period of time the
ice appears in the capillary and
becomes more and more, till
blocks the hole of capillary
completely. In the moment you
can find the ice on the evaporator
defrosts. The noise of liquid flow
disappears. The pressure of
absorbing becomes negative
First stop unit for several minutes, and then
open charging tube, discharge all of gas.
Blow the cycle system with gas of nitrogen,
and then recharge Gas, finally sealed the
system.

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absorbing becomes higher. It is
Ice blocking.
B, there is offal block the capillary
Phenomenon of failure:
If the capillary is blocked by
something such as offal etc., the
sound of liquid flow disappears.
The ice on the evaporator defrosts
The pressure of absorbing
becomes negative.
Higher temperature of discharging
tube
The way to check offal blocking:
If you warm capillary with the way
of checking ice blocking, there is
no change. It must be offal
blocking.
First stop unit for several minutes, and then
open charging tube, discharge all of gas.
Blow the cycle system with gas of nitrogen.
Change a new capillary and filter, and then
recharge Gas, finally sealed the system.
COMPRESSOR NEVER STOPS：
Reason Solutions
1)The setting temperature is not reasonable. Readjust the temperature setting.
2) the sensor is bad. Replace the sensor.
3)Seal of door is damaged. Replace the gasket
4)Too much food in the refrigerator Please put the food properly.
5)Wind door is broken. Replace wind door.
6)Fan motor is broken. Replace fan motor
■NOTE:
●Before doing these operations above, disconnect the main power supply. Failure to do so could result
in electrical shock or personal injury.
●In case of any detailed technical information please check with the technical specifications.
■Exploded view

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■Partslist: