TCL TRF-275W User manual

Refrigerator Service Manual
TRF-275W
TCL Home Appliances (HeFei) Co., Ltd.

Contents
1.Product introduction, Technical Parameters
2.Exploded View of Product Structure
3.Product operation rules
4.Refrigeration system and electrical control
5.Maintenance guide

Product appearance structure and name of each part
1.Product introduction
Product front Front opening Product back

Product appearance structure and name of each part
Compressor compartment Display panel

TRF-275W is an air-cooled double door computer temperature controlled refrigerator, the upper part of
which is the refrigerating chamber, and the lower part is the freezer chamber.
The appearance modeling drawing is as follows:
Refrigerating light
Refrigerating shelf
Fruit and vegetable box cover
Fruit and vegetable box
Freezer drawer
Refrigerating door bottle holder
Door of refrigerating chamber
Door of freezer chamber

Product features
1. Computer temperature control: The computer temperature control system is adopted,
intelligent and convenient;
2. Three dimensional air duct system: This system is controlled by the computer with direct and
surrounding air outlets;
3. Air-cooled frost-free: The air-cooled frost-free system is adopted, safe and efficient;
4. Intelligent display control: The intelligent panel display control is adopted, thus the operation
becomes visualized;

The schematic diagram showing the structure of the TRF-275W refrigerator is as follows
2.Exploded View of Product Structure

Detailed list of refrigerator accessories
Serial number
Description
Quantity used per unit
1
Upper hinge cover
1
2
Upper hinge
1
3
Master control board assembly
1
4
Refrigerating glass shelf assembly
3
5
Fruit and vegetable box cover plate assembly
1
6
Refrigerating lower bottle holder
3
7
Refrigerating door gasket assembly
1
8
Freezing door gasket
1
9
Refrigerating chamber door body assembly
1
10
Freezing door body assembly
1
11
Fruit and vegetable box
1
12
Freezing mid drawer
2
13
Freezing glass shelf
1
14
Freezing glass shelf
1
15
Freezing lower drawer
1
16
Freezing air duct assembly
1
17
Finned-type evaporator assembly
1
18
Lower hinge assembly
1
19
Adjustable feet
1
20
Foamed cabinet
1
21
Dry filter
1
22
Water tray
1
23
Compressor base plate assembly
1
24
Compressor assembly
1
25
Mid hinge assembly
1

3. Product operation rules
I. The refrigerator will operate at 5℃ when it is powered on for the first time.
II. Manual temperature regulation function
1) Regulation of temperature inside the refrigerating chamber
Press or to regulate the temperature inside the refrigerating chamber. Each time you press the key, the
temperature will increase or decrease by 1℃. The temperature inside the refrigerating chamber will cycle
between "02" - "04" - "05" - "06" - "08" - "02". After selecting the appropriate temperature, stop the key
operation and wait for 5 seconds, then the set temperature will stop flashing and be confirmed.
III. Power off memory
When power goes off, the instantaneous working state at the time of power off will be locked. After power
on, it will still work according to the setting before power off.

Operating instructions for 275W series products (external display)
Figure 1 (Internal Display) Schematic
Diagram of Display Panel and Keys
The refrigerating chamber will run at 5℃ when it is
powered on for the first time.
Child lock function
When there is no key operation on the display panel
within 30 seconds, the display screen will go out and the
child lock function will automatically start. In this state,
any key can be pressed to wake up the display screen and
make it light up. Keep pressing the "Temperature control
switch" key for 3 seconds to unlock the keyboard.
Regulation of temperature inside the refrigerating
chamber
In the unlocked state, press the "Temperature control
switch" key to regulate the temperature inside the
refrigerating chamber. The temperature inside the
refrigerating chamber will cycle between "02" - "04" -"05"-
"06" - "08" - "Power cool" - "Smart" - "Energy saving" -
"02". After selecting the appropriate temperature, stop the
key operation and wait for 5 seconds, then the set
temperature will stop flashing and be confirmed.
Temperature
display
Temperature
of 2℃
Temperature
of 5℃
Temperature
of 6℃
Child lock
function
Door opening
reminder

Power cool function
In the unlocked state, press the "Temperature control switch" key repeatedly until the "Power cool" icon flashes, stop
the key operation and wait for 5 seconds, then the power cool function of the refrigerating chamber will start. The
corresponding temperature in the power cool state will be 2℃.
Smart function
In the unlocked state, press the "Temperature control switch" key repeatedly until the "Smart" icon flashes, stop the
key operation and wait for 5 seconds, then the smart function will start. The corresponding temperature in the smart
state will be 5℃.
Energy saving function
In the unlocked state, press the "Temperature control switch" key repeatedly until the "Energy saving" icon flashes,
stop the key operation and wait for 5 seconds, then the energy saving function will start. The corresponding
temperature inside the refrigerating chamber in the energy saving state will be 6℃.
Door alarm
If the refrigerating chamber is not closed tightly or it keeps open for more than 1 minute, the "Door alarm" icon will
flash to remind, and at the same time it will beep. Any key can be pressed to temporarily stop the alarm, but it will
alarm again 1 minute later. Close the refrigerating door tightly to stop the flashing and alarm.

Damper regulating pick
The principle for regulating the damper pick on the back of the refrigerating drawer: In general, we recommend using the
damper pick in mid gear.。
The temperature inside the refrigerator will change due to its opening and closing, the ambient temperature and the site
where it is placed.
Regulation of temperature inside the refrigerating chamber
When the damper regulating pick is adjusted to the “Cold” side, the volume of cold air blowing into the refrigerating
chamber will increase to achieve a better refrigeration effect.
Regulation of temperature inside the freezer chamber
When the damper regulating pick is adjusted to the “Coldest” side, the volume of air blowing into the refrigeration
compartment will decrease to extend the running time of the compressor and to enhance the refrigeration effect of the
freezer chamber.

Technical Parameters
Product model
TRF-275WEA+
TRF-
275WETA+
TRF-
275WEDA+
TRF-
275WETDA+
TRF-
275WEXA+
TRF-
275WEXTA+
TRF-
275WEXDA+
TRF-
275WEXTDA
+
Climate type
N,ST,T
N,ST,T
N,ST,T
N,ST,T
N,ST,T
N,ST,T
N,ST,T
N,ST,T
Anti-shock
protection category
I
I
I
I
I
I
I
I
Star sign
Total volume
307L
307L
307L
307L
307L
307L
307L
307L
Gross volume
275L
275L
275L
275L
275L
275L
275L
275L
Volume of
refrigerating
chamber
203L
203L
203L
203L
203L
203L
203L
203L
Volume of freezer
chamber
72L
72L
72L
72L
72L
72L
72L
72L
Power supply
220-
240V~/50Hz
220-
240V~/50Hz
220-
240V~/50Hz
220-
240V~/50Hz
220-
240V~/50Hz
220-
240V~/50Hz
220-
240V~/50Hz
220-
240V~/50H
z
Rated current
0.7A
0.7A
0.7A
0.7A
0.7A
0.7A
0.7A
0.7A
Freezing capacity
3.5kg/24h
3.5kg/24h
3.5kg/24h
3.5kg/24h
3.5kg/24h
3.5kg/24h
3.5kg/24h
3.5kg/24h
Power consumption
0.77kW •
h/24h
0.77kW •
h/24h
0.77kW •
h/24h
0.77kW •
h/24h
0.77kW •
h/24h
0.77kW •
h/24h
0.77kW •
h/24h
0.77kW •
h/24h
Input power of the
light
1.5W
1.5W
1.5W
1.5W
1.5W
1.5W
1.5W
1.5W
Weight
55kg
55kg
56kg
56kg
55kg
55kg
56kg
56kg
Dimensions (W × D
× H)
545*615*1825
545*615*1825
545*615*1825
545*615*182
5
545*615*1825
m
545*615*1825
545*615*1825
545*615*18
25
Refrigerant and
filling quantity
R600a,54g
R600a,54g
R600a,54g
R600a,54g
R600a,54g
R600a,54g
R600a,54g
R600a,54g
Noise
42 dB(A)
42 dB(A)
42 dB(A)
42 dB(A)
42 dB(A)
42 dB(A)
42 dB(A)
42 dB(A)

4.Refrigeration system and electrical control
Compressor
Filter drier
Capillary tube
Condenser
Anti-condensation pipe
Fin evaporator
Evaporation coil
Diagram of Refrigeration System

Physical Diagram of Refrigeration System
TRF-275W is a single-system all-air-cooled frost-free refrigerator. The components for the refrigeration system
will be compressor, evaporation coil, condenser, dew-proof tube, dry filter, capillary tube, finned-type evaporator
and return-air duct according to the refrigerant flow direction. The freezer chamber is equipped with a fan, and
the refrigeration of the interchangeable temperature chamber and refrigerating chamber is realized by
controlling the air supply with the damper.
Return-air duct assembly
Finned-type evaporator

Schematic diagram for welding of pipelines in compressor compartment:
Intubation of process
tube (copper and copper)
Connection between the
outlet of the dry filter and
the capillary tube (copper
and copper)
Connection between the
dew removable tube and
the dry filter (steel and
copper)
Connection between the outlet of the
return-air duct and the return-air
transition duct (copper and copper)
Connection between the
outlet of the evaporation
coil and the inlet of the
condenser (steel and steel)
Connection between the
compressor exhaust and
the inlet of the
evaporation coil (copper
and steel)
Welding position
of process tube

Electrical Control Circuit Diagram

Composition of electrical control system:
1. Compressor — refrigeration device;
2. Refrigerating light — used for lighting in refrigerating chamber;
3. Freezing fan — used for cooling capacity transmission and air circulation;
4. Steel tube heater — used to remove frosting on the surface of freezing evaporator;
5. Refrigerating switch — used to control the lighting in refrigerating chamber;
6. Temperature sensor — used to sense temperature;
7. Temperature fuse — used to cut off the connection between the steel tube heater and the power supply when
the defrosting temperature is abnormal.

Control of components
(1) Compressor
If refrigeration is required, turn on the compressor; if not, turn off the compressor;
The downtime of the compressor must be more than 8 minutes before it can be started again;
(2) Light
When the refrigerating door is opened, the refrigerating light will be on.
When the refrigerating door is closed, the refrigerating light will go out;
The light will go out if it is continuously on for more than 5 minutes.
(3) Fan
In normal refrigeration process, every time the compressor is turned on, the freezer fan will be turned on.
When the compressor stops, the freezing fan will be turned off.
During the freezing and defrosting process, the freezing fan will be turned off;
If the refrigerating door is detected to be open, the freezing fan remains off;
(4) Heating wire for steel tube
In the defrosting state, the steel tube heating wire will be turned on;
In other states, the steel tube heater will be turned off.

When the temperature sensor for the freezer chamber fails, the refrigeration will proceed in the following
chronological order:
25 minutes of refrigeration, and then 25 minutes of no refrigeration.
When the ambient temperature sensor fails, the temperature will be controlled at 25℃.
In case of communication failure, it will run in the gear before the failure.
Failure running program
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