LG Gr P227 Ytqa Service Manual

2-6. IcingTROUBLE DIAGNOSIS
-91-
Problems Causes Checks Measures Remarks
Icing in the 1) Bad circulation of cool air. - Check the food is stored properly - Be acquainted with how to use. - Check the defrost
refrigerator  - Clogged intake port in the  (check discharge and intake port  - Sealing on connecting parts. related parts if problem
compartment. refrigerator compartment. are clogged). - Check the damper and replace is caused by faulty
- Damper icing. - Sealing is not good. - Check icing on the...

TROUBLE DIAGNOSIS
-92-
Problems Causes Checks Measures Remarks
Ice in the freezer 1) Bad cooling air circulation. - Check food storage conditions  - Be acquainted with how to use. - Check the parts related
compartment. - Intake port is colgged in the freezer visually.(Check clogging at intake  - Check defrost (Check ice on the to defrosting if the 
- Surface of fan compartment. and discharging port of cooling air.) evaporator and pipes after forced problem is caused by
grille. - Discharging port is...

2-7. SoundTROUBLE DIAGNOSIS
-93-
Problems Causes Checks Measures Remarks
Whizz sound 1. Loud sound of compressor  1.1 Check the level of the  1) Maintain horizontal level.
operation. refrigerator. 2) Replace rubber and seat if they
1.2 Check the rubber seat  are sagged and aged.
conditions (sagging and aging). 3) Insert rubber where hand contact
reduces noise in the pipe.
2. Pipes resonat sound which is  2.1 Check the level of pipes 4) Avoid pipe interference.
connected to the compressor. connected to...

TROUBLE DIAGNOSIS
-94-
Problems Causes Checks Measures Remarks
Vibration sound. 1. Vibration of shelves and foods in 1-1. Remove and replace the   1) Reassemble the vibrating parts 
(Cluck) the refrigerator. shelves in the refrigerator and insert foam or cushion where
2. Pipes interference and capillary 1-2. Check light food and container vibration is severe.
tube touching in the compressor. on the shelves. 2) Leave a clearance where parts
compartment. 2-1. Touch pipes in the compressore  interfere with...

TROUBLE DIAGNOSIS
-95-
Problems Causes Checks Measures Remarks
Sound Burping It happens when refrigerant expands 
- Check the sound of refrigerant at the  - Check the restrainer attached on the 
(almost the same at the end of capillary tube. initial installation. evaporator and capillary tube weld 
as animals crying - Check the sound when the refrigerator  joints and attach another restrainer.
sound). starts operation after forced defrosting. - If it is continuous and servere, insert 
- Check the...

2-8. OdorTROUBLE DIAGNOSIS
-96-
Problems Causes Checks Measures Remarks
Food Odor. Food (garlic, kimchi, etc) - Check the food is not wrapped. - Dry deodorizer in the shiny and 
- Check the shelves or inner  windy place.
wall are stained with food juice. - Store the food in the closed
- Check the food in the vinyl wraps. container instead of vinyl wraps.
- Chedk food cleanliness. - Clean the refrigerator and set 
button at strong.
Plastic Odor. Odors of mixed food and plastic  - Check wet food is wrapped...

2-9. MicomTROUBLE DIAGNOSIS
-97-
Problems Symptom Causes Checks Measures Remarks
Bad PCB  All display  Bad connection  Bad connector Visual check on connector  Reconnect 
electric power. LEDS are off. between Main PCB  connection from main  connection. connector.
and display circuit. PCB to display PCB.
Defective PCB trans. PCB Trans winding is  Check resistance of PCB Trans Replace PCB Trans Applicable to 
cut. input and output terminals with or PCB. model without
PCB Trans temperature a tester. (If...

TROUBLE DIAGNOSIS
-98-
Problems Symptom Causes Checks Measures Remarks
Bad cooling. Freezer  Compressor does Compressor Lead Wire Check compressor Lead Wire   Reconnect Lead 
temperature is not start. is cut. with a tester. Wire.
high. Defective compressor Measure voltage at PCB CON1 Replace relay Refer to load
driving relay. (5&7) after pressing main PCB (RY1) or PCB. driving circuit in 
test switch once. It is OK if  circuit 
voltage is normal. explanation.
Defective freezer  Defective Freezer  Check...

TROUBLE DIAGNOSIS
-99-
Problems Symptom Causes Checks Measures Remarks
Bad cooling Wrong  Defective AC Damper. Check AC damper Check if AC damper motor and Reconnect lead 
Refrigerator motor and reed switch reed switch lead wire are  wire.
temperature. and lead wire are cut. cut with a tester.
Check AC damper  Refer to AC damper in parts  Replace AC damper
part. repair guide. or refrigerator control
box  Assembly.
Check AC damper  Refer to AC damper in parts Replace relay or  Refer to single
Motor...

TROUBLE DIAGNOSIS
- 100 -
Problems Symptom Causes Checks Measures Remarks
Bad defrost. Defrost is not Defrost lead wire is cut. Check if defrost lead wire is cut with a  Reconnect Lead 
working. tester. Wire.
Defective defrost driving relay. Check the voltage of CON2 Replace relay  Refer to load
with a tester after pressing main  or PCB. driving conditions
PCB test switch twice.  check in circuit 
If the voltage is normal then it is OK. explanation.
Defective defrost sensor parts. Check the resistance of...