LFC21770ST (AST2LGA) LG Refrigerator - Overview

Sections of the LFC21770ST

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Parts for the LFC21770ST

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Refrigerator Door Switch

★★★★★

(2)

PartSelect #: PS3529268

Manufacturer #: 6600JB1010A

This door switch is used in refrigerators. It is activated by the closing and opening of the door

$46.15

Temperature Sensor

★★★★★

(1)

PartSelect #: PS3529340

Manufacturer #: 6615JB2005H

Keep your refrigerator running efficiently with this defrost sensor and thermistor assembly. It monitors the evaporator coil temperature to help regulate the defrost cycle, preventing frost buildup an...

$54.95

Refrigerator Lamp Cover

★★★★★

(1)

PartSelect #: PS3519843

Manufacturer #: 3550JA1388B

We know how inconvenient it can be when a minor issue affects the functioning of your LG refrigerator, so allow us to present the LG Refrigerator Light Lens Cover. Designed to secure the light bulb in...

$33.23

Defrost Heater

PartSelect #: PS12368655

Manufacturer #: 5300JK1005K

This sheath heater is a genuine OEM replacement part manufactured by LG for select refrigerator models. It plays a critical role in preventing frost buildup by gently warming the evaporator area, help...

$110.24

Drain Tube Assembly

PartSelect #: PS3527689

Manufacturer #: 5251JA3003D

$20.85

Refrigerator Push Button Switch

★★★★★

(1)

PartSelect #: PS3529285

Manufacturer #: 6600JB3007K

$47.07

SOCKET,LAMP

PartSelect #: PS3643279

Manufacturer #: EAG62831801

This part is a replacement light socket for your refrigerator. This model is white in color, and it has two sockets that will fit two separate light bulbs. The light socket connects to the power sourc...

Stopper,Compressor

PartSelect #: PS3523075

Manufacturer #: 4620JA3015A

$13.15

Light Bulb

PartSelect #: PS3530408

Manufacturer #: 6912JB2004M

Freezer Fan Assembly

PartSelect #: PS8749044

Manufacturer #: ADP73694301

Feel the difference a premium part like the FAN ASSEMBLY from LG can make in getting your appliance back in optimal shape. This isn't your run-of-the-mill replacement - this is an original OEM item de...

$18.65

Display Case

PartSelect #: PS3518271

Manufacturer #: 3110JA1096A

Let's get your LG refrigerator looking and working like new again with our genuine LG Electronics Dispenser Display Assembly. This assembly is more than just a white plastic trim piece'it's a key part...

$54.95

Ice Gear

PartSelect #: PS3522982

Manufacturer #: 4470JA2008A

$13.15

Common Symptoms of the LFC21770ST

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Light not working

Fixed by
these parts

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Freezer not defrosting

Installation Instructions of parts on the LFC21770ST

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Remove and replace light switch

Video makes it look easy. Kenmore refrigerator does not have "groove" along the right hand side of switch that allows for pushing down on release. Used a thin screwdriver to get under to push while holding switch edge with pliers. Kept slipping. Tape sides to avoid scratching inside of refrigerator.

Parts Used:

Refrigerator Door Switch

Debbie from Waltham, MA
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers

45 of 89 people found this instruction helpful.

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Replace Thermistor in back of freezer

Turn off power, remove upper and lower drawers (may need to open upper refrigerator doors to remove large freezer bin,) remove drawer supports (upper and lower), remove rear freezer panel (trick is to loosen 4 screws on fan bumpout to get the panel to come free from the freezer side wall), test thermistor with multimeter (should have continuity or near zero resistance across 2 orange fuse wires) before cutting zip ties, cut zip ties holding Thermistor in place, remove old Thermistor, install new Thermistor, install new zip ties, replace rear freezer panel, install upper and lower drawer supports, install drawers, turn on power, should be fixed if error code doesn't return after 6 hours.

Parts Used:

Temperature Sensor