TCL TRF-315W User manual

Refrigerator Service Manual
TRF-315W
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

Taking TRF-315WEA + (internal display) prototype as an example, it is an air-cooled double door refrigerator,
the upper part of which is the refrigerating chamber, and the lower part is the freezer chamber.
TRF-315WEXA + (external display) and TRF-315WEA+ distinction
Model
Orifice plate
assembly
Top light
assembly
Refrigerating foam door body
Foamed cabinet
TRF-315WEXA+
3B104-000038
3B104-000088
4B191-000668
4B190-000233
TRF-315WEA+
None
3B104-000089
4B191-000285
4B190-000192
Refrigerating top 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 introduction

The schematic diagram showing the structure of TRF-315WEA + refrigerator is as follows:
Exploded View of Product Structure

Detail list of parts
Serial number
Description of the material
Quantity
1
Refrigerating chamber upper end cover and through-holes decorative cover
1
2
Display control board assembly
1
3
Refrigerating foam door body
1
4
Freezing foam door body
1
5
Refrigerating door gasket assembly
1
6
Freezing door gasket assembly
1
7
Refrigerating bottle holder
3
8
Freezing glass shelf
1
9
Freezing glass shelf
1
10
Refrigerating glass shelf assembly
3
11
Refrigerating glass shelf assembly
1
12
Fruit and vegetable box
1
13
Freezing upper drawer
2
14
Freezing lower drawer
1
15
Refrigerating air duct assembly
1
16
Freezing air duct assembly
1
17
Top light assembly
1
18
Mid hinge
1
19
Windbreak strip
1
20
Finned-type evaporator assembly
1
21
Upper hinge cover
1
22
Upper hinge
1
23
Foamed cabinet
1
24
Lower hinge assembly
1
25
Adjustable feet
1
26
Drain pipe in compressor compartment
1
27
Evaporation coil
1
28
Water tray
1
29
Compressor base plate assembly
1

Operating instructions (TRF-315WEA + internal display)
Powered on for the first time
The refrigerator will run in Gear 5 when it is powered on for the first time.
Gear adjustment
Press "+" key or "-" repeatedly. The refrigerator gear will cycle between "02" → "04" → "05" → "06" → "08" →
"02". After selecting the appropriate temperature, stop the key operation and wait for 5 seconds, then this gear
will be confirmed.
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.
Product operation rules

Operating instruction (TRF-315WEXA+)
Powered on for the first time
The refrigerator will run in Gear 5 when it is powered on for the first time.
Child lock function
When there is no key operation on the display screen within 30 seconds, the child lock function will
automatically start and the screen saver mode of the display screen will be activated. In this mode, the display
screen will go out. The first keystroke can wake up the display screen.
In the child lock state, keep pressing the "Temperature control switch" key for 3 seconds to unlock the
keyboard and make the keys effective.
Gear adjustment
When the child lock function is not activated, press the "Temperature control switch" key repeatedly. 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 this gear will be confirmed.
Power cool mode
Refer to "Gear adjustment" to set the "Power cool" mode. In this mode, the refrigerator will run in Gear 2.
Smart mode
Refer to "Gear adjustment" to set the "Smart" mode. In this mode, the refrigerator will run in Gear 4.

Energy saving mode
Refer to "Gear adjustment" to set the "Energy saving" mode. In this mode, the refrigerator will run in Gear 6.
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.
Door alarm
If the refrigerating chamber is not closed tightly or it keeps open for more than 1 minute, 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 alarm.

The refrigeration schematic diagram is as follows:
Dry filter Dew-proof
tube
Condenser
Capillary tube
Finned-type
evaporator
Compressor Evaporation coil
Refrigeration system

Schematic diagram for welding of pipelines in compressor compartment
Welding position
of process tube
Solder joints for compressor
and evaporation coil
Solder joints for
evaporation coil and dew-
proof tube
Solder joints for
dew-proof tube
and condenser
Solder joints for
condenser and dry
filter
Solder joints for
dry filter and
capillary tube
Solder joints for return-air
duct and return-air
transition duct
Solder joints for
return-air transition
duct and condenser

Schematic Diagram of Freezer chamber
Welding position of freezing evaporator

Relay cover
Running capacitor
PTC relay
Motor protector
Sealed terminal
Compressor
Earth screw
Compressor connector socket
Compressor terminal block I
Compressor terminal block II
Crosshead self-tapping screw
Compressor Wiring Diagram

Schematic Diagram of Electrical Control
Plug
Overloading protector
PTC relay
Capacitor
Compressor
Defrosting heater Temperature fuse
Temperature fuse
Refrigerating switch
Freezing fan
Refrigerating light
Refrigerating sensor
Ambient temperature sensor
Defrosting sensor
Master control board
Electrical control

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.

(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;
Control of components:

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:

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.
Maintenance guide

Composition of the top light assembly (internal display)
Lamp holder Back cover
Display patch
Transparent lampshade
Control board
Lamp board

Composition of the top light assembly (external display)
控制板
灯座
Lamp holder
Back cover
Display patch
Transparent lampshade
Control board
Lamp board
Lamp holder

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