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 unit1 Upper hinge cover 12 Upper hinge 13 Master control board assembly 14 Refrigerating glass shelf assembly 35 Fruit and vegetable box cover plate assembly 16 Refrigerating lower bottle holder 37 Refrigerating door gasket assembly 18 Freezing door gasket 19 Refrigerating chamber door body assembly 110 Freezing door body assembly 111 Fruit and vegetable box 112 Freezing mid drawer 213 Freezing glass shelf 114 Freezing glass shelf 115 Freezing lower drawer 116 Freezing air duct assembly 117 Finned-type evaporator assembly 118 Lower hinge assembly 119 Adjustable feet 120 Foamed cabinet 121 Dry filter 122 Water tray 123 Compressor base plate assembly 124 Compressor assembly 125 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

functionDoor 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~/50Hz

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*1825545*615*1825

545*615*1825m

545*615*1825 545*615*1825545*615*1825

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

5. Maintenance guide

Before maintenance, it is necessary to know the actual usage of the user before taking corresponding

measures:

User usage Guidance and handling

1. Installation

environment

No clearance around

Surrounding clearance: more than 10 cm at

the back and more than 30 cm at the top,

keep it ventilated.

Unstable installation Install on flat ground and adjust the

adjustable feet.

Inappropriate installation site Change the installation site or maintain

surrounding ventilation.

2. Usage

Too much food is stored It will affect the circulation of cold air in the

refrigerator. Please explain the relevant

contents in the Operation Instructions to the

user clearly.

There is too much water in the stored food

The cold air source is blocked during food

storage

The refrigerator door is opened many times Open the door of the refrigerator as little as

possible.

The setting position of the temperature

regulator is inappropriate

Set the temperature regulator in the

appropriate position.

Composition of the top light assembly (internal display)

Lamp holder

Back cover

Control board

Lamp board (The lampshade has been removed)

Display patch

Transparent lampshade

Composition of the top light assembly (external display)

Lamp holderLamp holder

Back cover

Display patch

Transparent lampshade

Control board

Lamp board (The lampshade has been removed)

Removal of the top light

Step II: Pull down the top light from the rear

as shown in the figure, and unplug the plug-

in terminal

Step I: Remove the 2 screws at the rear of the assembly

State after the removal

Top light installation

Step I: Connect the plug-in terminal, put the top light into the

groove on the top of the refrigerator liner, and clamp the front

claw into the liner first.

Step II: Hold the back with your hands, and use two 4.2*16

self-tapping screws to fix the screw holes as shown in the

figure

State after assembly

Removal of refrigerating air duct assembly

Step I: Move the refrigerating air duct assembly to one side

(such as the left side) and then break it open;

Step II: From top to bottom, remove the refrigerating air duct assembly from the body of the refrigerator,

as shown in the figure, and finally unplug the plug-in terminal

Installation of refrigerating air duct assembly

Step I: Connect the plug-in terminal shown in the figure, and install the lower end of the

refrigerating air duct assembly into the body of the refrigerator first

Step II: Install the refrigerating air duct into the body

of the refrigerator from bottom to top State after assembly

Removal and installation of freezing air duct assembly

First remove the screw at the bottom of the cover plate of the freezing air duct, then pull out the left

terminal and take out the cover plate.

Please pay attention to insert the buckle shown in the figure during installation to prevent air leakage.

Position of the screw hole

The compressor does not work:

Whether the refrigerating chamber light is on

Use a multimeter to test whether the overloading protector is on

Replace the master control boardCheck whether the master control board is normal

Whether the compressor works

Make the voltage stable and normal Plug in the power plug

Whether the voltage is normalWhether the power plug is plugged in

Test whether the PTC resistance is normal

Judge whether the compressor is normal

Replace the PTC

Replace the compressor

Replace the protector

No Yes

No

Yes

No

No

No

Yes

Yes

Yes

No

NoNo

Excessive noise:

Excessive noise

Avoid collision with objectsResonance with objects through collision

Whether the ground is flat Keep the ground level No

Yes

Yes

No

Whether the pipelines in the compressor compartment collide with each other

YesAdjust the pipeline to avoid collision

The compressor does not stop for a long time:

The compressor does not stop for a long time

Whether the gear is appropriate

Close the door of the refrigerator tightly

Whether the door of the refrigerator is closed tightly

Whether the ambient temperature is too high

Move it to a place with low ambient temperature

Adjust the gear properly

Yes

No

No

No

Yes