LG LSC27918ST, Service Manual

Page: 19 / 84

1-17. Test Function
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.
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.
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1-18. Function of dispenser and water dispenser built-in
1)While the refrigerator Door is opened, Dispenser function can’t be used.
2) There are 2 dispenser pads: first pad is for get water and second is for get ice.
3) In order to get ice after select ICE/CRUSH option then press the dispenser ICE pad.
4) When pressing Ice Pad, duct door is opened, this will remain opened 5 second after release dispenser pad
5) While using dispenser Ice or Water function and the door is opened the operation will be stoped.
6)If the water or ice Pad exceeds 3 minutes this will turn OFF automatically but the duct door will remain opened 5
seconds after this interruption.
7) While pressing a water pad the water will be dispensed and then water pad is released the water dispensing will stop.
MODE OPERATION CONTENTS REMARKS
1. COMP ON
2. Drive FAN high-speed RPM
3. Defrost and H/bar, TP Heater OFF
4. R-stepping motor damper
All the BAFFLE opened
5. All the Display ON
1. COMP OFF, Cooling FAN OFF
2. Defrost Heater ON
3. H/bar. TP HEATER OFF
4. R-stepping motor damper
All the BAFFLE closed
5. Only F/R room NOTCH ON ("22" "22")
BETTER 1 (Only F/R "normal" LED) Only
F/R Notch normal LED
NORMAL STATUS
Press test switch
button once at the test
mode 2 status
Return to the initial status (Comp is operated after 7 minutes)
TEST 1
Press test button once
(freezing force mode)
Under the TEST 1, if the
test circuit is shorted
continuosly, stay to keep
the Test 1
TEST 2
Press test button once
at the test mode 1
(compulsory frost
removal mode)
Defrosting Sensor= -5°C
Defrosting Heater ON
Defrosting Sensor= +5°C:
Return to the original
status (COMP is operated
after 7 minutes).