Micom Function & Pcb Circuit Explanation - LG LRBP1031W Service Manual

MICOM FUNCTION & PCB CIRCUIT EXPLANATION
This description is made for GR-349 & 389. Please refer to overall PCB circuits for other models.
1 FUNCTION EXPOSITION
1) FUNCTION
(1) The refrigerator starts from optimum condition when electric power is first on. The operation condition changes
Mid Mid/Max Max
(2) It returns to Mid conditions if power off and on again.
VACATION
2) QUICK FREEZER
(1) This raises the freezing speed by operating the compressor continuously. Press the QUICK FREEZE button and
the QUICK FREEZE LED is displayed. Then after 3 hours' successive operation of compressor operation, the QUICK
FREEZING function will be released.
(2) Defrosting during the QUICK FREEZING operates as follows!
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. 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 is interrupted during QUICK FREEZING, the QUICK FREEZING function is released.
3) VACATION FUNCTION
(1) Function for Energy Saving. Press the VACATION button, and 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 are same as normal operation.
(4) If QUICK FREEZE button is pressed during the VACATION FUNCTION, VACATION FUNCTION is released.
(5) If power is interrupted during VACATION FUNCTION, the VACATION FUNCTION is released.
Min Min/Mid Mid whenever you press the FREEZE TEMP button.
Min/
NOTCH Min
Mid
TEMP(˚C)
-15 -16.5
ROOM
FREEZE TEMP
Mid/
Mid Max
Max
-18 -19.5 -22
FREEZER
- 17 -
QUICK FREEZE