DOWNLOAD LG GR-P207DTU Service Manual ↓ Size: 8.05 MB | Pages: 127 in PDF or view online for FREE

1. Failure diagnosis function is function to facilitate service when nonconforming matters affecting performance of product

during use of product.

2. In occurrence of failure, pressing the function adjustment button does not perform function and only alarm sound (“Ding~”) rings.
3. If nonconforming matters occurred are released during display of failure code, MICOM returns to the original state (Reset).
4. Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting

temperature for the cold storage room of LCD, which are placed at the display part of a refrigerator. All the LCD graphics
other than a failure code are turned off.

✽

In display of the failure mode, all LCDs of setting temperature for freezing/ setting temperature for cold storage are turned
off  (excluding Note1 and Note2).

- 30 -

TEMP

TEMP

OFF

ROOM

TEMP

MAX

MIN

MAX

MIN

CRUSHED

CUBED

WATER

TEMP

TEMP

OFF

ROOM

TEMP

MAX

MIN

MAX

MIN

Failure Code
display Part

High quality type
(GR-P207, L207, P247, L247)

Failure Code
display Part

Basic type
GR-C247, B247, C207, B207)

C

A

B

E

C

D

A

B

●

●

: Normal Operation

1

2

3

4

5

6

7

8

9

10

11

Er

FS

Er

RS

Setting temperature

display (Note 2)

Er

DS

Er

dH

Er

FF

Er

CF

Er

CO

Setting temperature

display (Note 1)

Setting temperature

display (Note 2)

Setting temperature

display (Note 2)

Failure of freezer
sensor

Failure of refrigerator
sensor 1

Failure of refrigerator
sensor 2

Failure of frost
removal sensor

Poor of frost
removal

Failure of BLDC FAN
at freezing room

Failure of BLDC FAN
at machine room

Failure of
Communication

Failure of
Outside Sensor

Failure of ice
removal sensor

Failure of ice
maker unit

Snapping or short-circuit of
freezer sensor

Snapping or short-circuit of
refrigerator sensor 1

Snapping or short-circuit of
refrigerator sensor 2

Snapping or short-circuit of frost
removal sensor

Snapping of frost removal heater
or temperature fuse, pull-out of
connector (indicated minimum 4
hours after failure occurs)

Poor motor, hooking of wires to
fan. Contact of structures to Fan.
Snapping or short-circuit of L/wire
(if there is no fan motor signal for
more than 60 seconds in
operation of fan motor

Connection between main PCB
and display PCB. Snapping or
short-circuit of L/wire.
Transmission between main PCB
and display PCB. Poor TR and
receiving part.

Snapping or short-circuit of outside
temperature perceiving sensor

Snapping or short-circuit of ice-
making sensor

Poor motor or Hall IC within ice-maker
unit. Snapping or short-circuit of
L/Wire. Poor main PCB drive circuit.

Standard

RPM

Standard

RPM

Standard

RPM

Standard

RPM

Standard

RPM

OFF (check every

30 minutes)

Standard

RPM

Standard

RPM

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

OFF (check

every 30 minutes)

●

●

●

●

●

●

●

●

ON for 15minutes 

OFF for 15minutes

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

No frost

removal

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

Open for 10munutes,

closing for 15 minutes

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

Note1) In error of outside sensor, setting temperature for freezing/ cold storage is normally displayed and indicated “Er” on

the outside temperature display part (normally displayed except for the outside temperature display part).

Note2) Nonconforming contents of poor R2 sensor, ice-making sensor and ice-making kit are displayed in LCD check, not

indicated on the failure display part (when pressing freezing temperature adjustment button and special freezing
button for a second or more).

Cold storage sensor 2 

Normal : (C) Part LCD graphic- ON 

(middle partition) 

Abnormal: Only (C) Part LCD graphic-OFF

Ice-making sensor

Normal: (D) Part LCD graphic-ON 
Abnormal: Only (D) Part LCD graphic-ON

ICE Maker Unit

Normal: (E) Part LCD graphic-ON
Abnormal : Only (E) Part LCD graphic-ON

1. The purpose of test function is to check function of the PWB and product and to search for the failure part at the failure

status.

2. Test button is placed on the main PCB of refrigerator (test switch), and the test mode will be finished after maximum 2

hours irrespective of test mode and then is reset to the normal status.

3. Function adjustment button is not perceived during performance of test mode but only warning sounds ring.

4. In finishing test mode, always pull the power cord out and then plug-in it again for the normal state.

5. If nonconforming contents such as sensor failure are found during performance of test mode, release the test mode and

display the failure code.

6. Even if pressing the test button during failure code display, test mode will not be performed.

- 31 -

Other LCD graphics - ON

Test 1

Test 2

Normal

Status

Press test button once
(freezing force mode)

Press test button once at
the test mode 1 status
(compulsory frost removal
mode)

Press test button once at
the test mode 2 status
(freezing force mode)

1. Continuous operation of compressor
2. Continuous operation of freezing room fan

(high speed RPM) and M/C room fan

3. Frost removal heater OFF
4. Full opening status (baffle opened) status of

electronic step motor damper

5. All display LCD graphics - ON.

1. Compressor OFF
2. Freezing room fan and M/C room fan is

turned off.

3. Frost removal heater ON
4. Full closing status (baffle closed) status of

electronic step motor damper

5. All display LCD graphics - OFF 

( (A) “Medium” status. (B) “Medium” status.
Only LCD is turned on) 

Return to the initial status.

Freezing room fan is
turned off in door open.

Compressor is operated
after 7 minutes.

✻

LCD check function: If simultaneously pressing special freezing button and cold temperature adjustment button for a

second, a back light is turned on and all display LCD graphics on. If releasing the button, the LCD
graphic displays the previous status, the back light is turned off (LCD graphic and back light ON/OFF
check).

1. This is function allowing ice and water to come outside without opening door.

2. If pressing the dispenser switch (rubber button) after selecting ice (cube ice, crushed ice) or water, ice and water

equivalent to each come out. However, the duct doors are opened by electrical solenoid valve (Duct Door Solenoid) if
pressing the press switch in case of selecting ICE. If pressing the dispenser press switch and then detaching the hands,
the duct door is closed after it is opened for 5 seconds.

3. Function allowing ice and water to come stops if freezing room doors are opened.

4. If there is no Off signal even when 3 minutes have passed while pressing the dispenser press switch after selecting ice

(cube ice, crushed ice) or water, geared motor and solenoid (Cube, Water) is automatically turned off. However, the
solenoid (duct door) is stop 5 seconds after Off (to prevent short-circuit of a coil due to overheat of solenoid).

5. Dispenser Lamp On/Off function 

Lamp on the dispenser part is turned on if pressing the dispenser press switch after selecting ice (cube ice, crushed ice)
or water. If detaching the hands, it is turned off.

6. Selection function of water/crushed/ cube ice 

1) This is function to allow selection of water/crushed/ cube ice function depending on user’s selection. Display and

selection is done if pressing the dispenser selection button.

2) In the initial Power On, cube ice is automatically selected.
3) In selecting cube ice, geared motor is operated so that crushed ice can be supplied outside if pressing the press switch

when ice is formed in the ice storage container (Bank, Ice).

4) In selecting cube ice, geared motor is operated so that cube ice can be supplied outside if pressing the press switch

when ice is formed in the ice storage container (Bank, Ice).

7. Water dispenser function

1) LCD is displayed for selection if user selects water at the function adjustment part.
2) Water dispenser function is a type directly connected to a water pipe. The water solenoid valve built-in at the right side

of the M/C room is opened so that water can be supplied if selecting Water from the function adjustment part and then
pressing the press switch.

- 32 -

LOCK

TEMP

TEMP

FRZ TEMP

REF TEMP

SUPER FRZ

MAX

MIN

MAX

MIN

LOCK

ON

OFF

ROOM

TEMP

LOCK

FRZ TEMP

FRZ TEMP

REF TEMP

REF TEMP

DISPENSER

LOCK

SUPER FRZ

SUPER FRZ

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

TEMP

TEMP

FRZ TEMP

REF TEMP

DISPENSER

LOCK

SUPER FRZ

LOCK

ON

OFF

ROOM

TEMP

MAX

MIN

MAX

MIN

CRUSHED

CUBED

WATER

- 73 -

2. No cooling.

2) Refrigeration system is clogged.

■

Check the clogged
evaporator by heating (as
soon as the cracking sound
begins, the evaporator start
freezing)

■ 

The evaporator does not cool
from the beginnig (no evidece
of misture  attached).
The evaporator is the same
as before even heat is
applied.

Moisture
clogged.

No electric
power on
therm-
ostat.

Weld joint
clogged.

Drier cloggeing.

Foreign material clogging.

Residual moisture

in the evaporator.

Residual moisture.

Insufficient drier
capacity.

Residual moisture 
in pipes.

Moisture penetration - Leave it in the air. - Moisture penetration.
into the refrigeration oil.

Caps are missed.

Air blowing.

During transportation.
During work.

Not performed.
Performed.

Too short time.
Low air pressure.
Less dry air.

Air Blowing.

Leave it in the air.

Caps are missed.

Short pipe insert.

Pipe gaps.

Too much solder.

Too large.
Damaged pipes.

Not dried in the compressor.
Elapsed more than 6 months after drying
Caps are missed.
No pressure when it is open.

During rest time.

After work.

Compressor cap is disconnected.
Foreign materials are in the pipe.

Not performed.
Too short.
Impossible moisture
confirmation.
Low air pressure.

Dry drier - Drier temperature.

Leave it in the air.

The capillary tube inserted depth. - Too much.

Capillary tube melts. - Over heat.

Clogged with foreign materials.

Reduced cross section by cutting. - Squeezed.

Desiccant powder.
Weld oxides.
Drier angle.

Check on package
condition.
Good storage after
finishing.