DOWNLOAD LG GR-349SQF Service Manual ↓ Size: 6.37 MB | Pages: 44 in PDF or view online for FREE

- 36 -

103A

103B

503B

406B

114A

102B

109C

102A

120D

120B

120E

501A

120C

120A

282B

283B

104C

106A

104A

109A

109B

103C

301A

418A

401A

104C

106A

104A

315A

315B

315C

315B

315C

319A

319C

328A

327A

420A

329C

323B

310A

308A

309A

314A

312A

317A

307A

318A

105A

304A

411A

404A

405A

329A

332A

409B

330B

405C

281B

281F

610E

108A

604F

120H

- 37 -

136E

136E

136F

155A

140A

151A

151B

241A

235A

249C

241A

249A

237A

241C

136A

125A

136B

136C

136D

233A

231A

210A

210A

249B

230A

203A

201A

200A

281D

NOTCH

TEMP(˚C)

ROOM

Min

Min/

Mid

Mid

Mid/
Max

Max

-15

-16.5

-18

-19.5 

FREEZER

-22

This description is made for GR-349, 389SQ. Please refer to overall PCB circuits for other models.

(1) The refrigerator starts from optimum condition when electric power is first on. But the operation condition changes "Mid"

➝

"Mid/Max" 

➝

"Max" 

➝

"Min" 

➝

"Min/Mid" 

➝

"Mid" whenever pressing the FREEZE TEMP button.

(2) It returns to "Mid" conditions if power off and on again.

- 17 -

(1) Function to raise the freezing speed by operating the COMP successively. As pressing the QUICK FREEZE button, the

QUICK FREEZE LED is displayed. Then after 3 hours' successive operation of COMP, the QUICK FREEZING function
will be released.

(2) Defrosting During the QUICK FREEZING operates as follow.

When the QUICK FREEZING time is below 90 minutes, defrost and then operate the QUICK FREEZING for the
remaining time. When the QUICK FREEZING time is over 90 minutes, defrost and then operate the QUICK FREEZING
for 2 hours

(3) If QUICK FREEZE button is pressed during defrosting, the QUICK FREEZE LED is lit up. But the QUICK FREEZING

operates for 3 hours after 7 minutes from the end of defrosting.

(4) If VACATION button is pressed during the QUICK FREEZING, the QUICK FREEZING LED function is released.

(5) If power off during the QUICK FREEZING and power on again, the QUICK FREEZING function is released.

(1) Function for Energy Saving. As pressing the VACATION button, the VACATION LED is displayed and this function is

operated.

(2) Freezer Compartment is not kept by compressor at the notch displayed but at -13

°

C

±

differential.

(3) Defrosting and Fan control is same as normal operation.

(4) If QUICK FREEZE button is pressed during the VACATION FUNCTION, VACATION FUNCTION is released.

(5) If power off during the VACATION FUNCTION and power on again, the VACATION FUNCTION is released.

(1) When the REFRIGERATOR DOOR is opened and won't be closed after 1 minute from the its opened, BUZZER sounds

to notify it.

(2) At frist, BUZZER sounds three times at each intervals of 0.5 second. Then makes a 0.5 second ON/OFF alarm three

times at intervals of 30 seconds.

(3) If the REFRIGERATOR door closed during ALARM, it is released.

(1) If display function button(FREEZE TEMP, QUICK FREEZE, VACATION) of the front of the TOP COVER is pushed,

BUZZER rings with "DING~ DONG~"(See the BUZZER OPERATION CHECK)

(1) If the accumulated time for the operation of the COMPRESSOR is meet with 7 hours, the DEFROSTING HEATER is

started.

(2) The first defrosting is performed at 4 hours(compressor ON) later since the power is on.

(3) If DEFROST SENSOR is over 7

°

C during DEFROSTING, end the operation of DEFROSTING with DEFROSTING

HEATER paused, And after 7 minutes, the operation for the freezing is started.
But, if DEFROST SENSOR is not reach to 7

°

C after 2 hours' operation of the defrosting heater, it represents a defrosting

trouble.(See the TROUBLE REPRESENTING FUNCTION)

(4) If DEFROST SENSOR is short or open, defrosting is not performed.

To avoid NOISE and DAMAGE, the items containing an electric parts such as COMP, DEFROSTING HEATER and FAN
MOTOR operate in order as follows.

- 18 -

CLOSE

OPEN

CLOSE

OPEN

CLOSE

BUZZER

within

1 minute

1 minute

30

seconds

30

seconds

three
times

three
times

three
times

FREEZER

DOOR

WHEN DEFROST SENSOR
TEMPERATURE IS OVER
7

°

C. (WHEN PURCHASING 

OR MOVING)

WHEN DEFROST SENSOR 
TEMPERATURE IS BELOW
7

°

C. (WHEN POWER  

FAILURE OR SERVICING)

WHEN RETURNING TO NORMAL
STATE FROM TEST MODE

after 0.5 sec.

after 0.5 sec.

after 7 min .

after 0.5 sec.

after 0.5 sec.

after 10 sec.

after 0.5 sec.

after 0.5 sec.