LG LRSC26980TT Service Manual - Page 59

Defect diagnosis function

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OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 2-5. Function TEST 1. This is a compulsory operation for TEST, SVC, cleaning, etc. It is operated by pressing the water supply control KEY for 3 seconds. 2. It operates in the Icemaking mode, but not in the Ice-Removing mode or water supply process. (If there is an ERROR, it can only be checked in the TEST mode.) 3. If the water supply control KEY is pressed for 3 seconds in the Icemaking mode (no matter what condition the Ice-Making tray is in) the Ice-Removing operation starts immediately. Water is not yet frozen, so water is poured instead of ice. If the control doesn't operate normally in the TEST mode, check and repair as needed. 4. After water is supplied, the normal CYCLE is followed: Icemaking → Dump → Fill → Park Position. 5. When Stage 5 is completed in the TEST mode, minimize MICOM in 5 seconds, the time needed to supply water resets to the previous status in the TEST mode. Diagnosis TABLE STAGE ITEMS 1 HEATER 2 MOTOR INDICATOR REMARKS Five seconds after heater starts, heater will go off if temperature recorded by sensor is 10°C or lever is in up position. Five seconds after heater starts, you can confirm that motor is moving. 3 HALL IC (detection of position) I You can confirm Hall IC detection of position. 4 VALVE (Detection of ICE-FULL) Two seconds after detection of initial position, you can confirm that valve is on. HALL IC (Detection 5 of ICE-FULL) II You can check whether hall is sensing Full ice condition. (If there is a ICE-FULL error, the fifth LED is not on.) 6 reset 5 seconds after the last step is completed, Mark previous status on TEST mode the icemaker resets itself to its initial state. 3. Defect diagnosis function 3-1. ERROR CODES shown on Ice Maker water supply control panel NO DIVISION INDICATOR CONTENTS 1 Normal Mark time to supply None Icemaking 2 Sensor malfunction Cut or short-circuited wire 3 Icemaker Kit malfunction When ejector blades doesn't reach park position in 18 minutes after Dump Mode starts. ERROR indicators in table can be checked only in TEST mode. - 59 - REMARKS Display switch operates properly Make sure that the wire on each sensor is connected. Defects of HALL IC/MOTOR/ HEATER/RELAY/ STALLED EJECTOR.

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2-5. Function TEST
1.
This is a compulsory operation for TEST, SVC, cleaning, etc. It is operated by pressing the water supply control KEY for 3 seconds.
2. It operates in the Icemaking mode, but not in the Ice-Removing mode or water supply process. (If there is an ERROR, it
can only be checked in the TEST mode.)
3. If the water supply control KEY is pressed for 3 seconds in the Icemaking mode (no matter what condition the Ice-Making
tray is in) the Ice-Removing operation starts immediately. Water is not yet frozen, so water is poured instead of ice. If the
control doesn
’
t operate normally in the TEST mode, check and repair as needed.
4. After water is supplied, the normal CYCLE is followed:
Icemaking
→
Dump
→
Fill
→
Park Position
.
5. When Stage 5 is completed in the TEST mode, minimize MICOM in 5 seconds, the time needed to supply water resets to
the previous status in the TEST mode.
Diagnosis TABLE
3. Defect diagnosis function
3-1. ERROR CODES shown on Ice Maker water supply control panel
ERROR indicators in table can be checked only in TEST mode.
OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER
- 59 -
STAGE
ITEMS
INDICATOR
REMARKS
1
2
3
4
5
6
HEATER
MOTOR
HALL IC (detection
of position)
I
VALVE
(Detection of
ICE-FULL)
HALL IC (Detection
of ICE-FULL)
II
reset
Five seconds after heater starts, heater will
go off if temperature recorded by sensor is
10
°
C or lever is in up position.
Five seconds after heater starts, you can
confirm that motor is moving.
You can confirm Hall IC detection of position.
Two seconds after detection of initial
position, you can confirm that valve is on.
You can check whether hall is sensing Full
ice condition. (If there is a ICE-FULL error,
the fifth LED is not on.)
5 seconds after the last step is completed,
the icemaker resets itself to its initial state.
NO
DIVISION
INDICATOR
CONTENTS
REMARKS
1
2
3
Normal
Icemaking
Sensor
malfunction
Icemaker Kit
malfunction
Mark time to
supply
Mark previous status on TEST mode
None
Cut or short-circuited wire
When ejector blades doesn
’
t
reach park position in 18 minutes
after Dump Mode starts.
Display switch
operates properly
Make sure that the wire
on each sensor is
connected.
Defects of
HALL IC/MOTOR/
HEATER/RELAY/
STALLED EJECTOR.