LG & Kenmore Refrigerator Defrost Control Assembly Parts — Models & Compatibility

If your LG or Kenmore French door refrigerator is building up excessive frost in the freezer compartment, running constantly, or failing to maintain proper temperatures, the defrost control assembly (part ACM73919214) is often the culprit. This hub covers replacement options for 40+ compatible LG and Kenmore refrigerator models, including the popular LFX and LFXS series.

Is This the Right Part for Your Model?

The ACM73919214 defrost control assembly fits French door refrigerators manufactured by LG between approximately 2010-2018. To verify compatibility, locate your model number on the interior left wall of the fresh food compartment, just above the top shelf. Match it against the complete compatibility list below — this part replaces LG factory numbers AP6004251, ACM73919202, and 6615JB2005S.

About This Replacement Part

The defrost control assembly is the brain of your refrigerator's defrost system. It monitors temperature sensors and controls the defrost heater cycle to prevent frost buildup on the evaporator coils. When this component fails, you'll typically notice thick frost accumulation in the freezer, inconsistent temperatures, or the compressor running non-stop trying to compensate. The ACM73919214 is a direct OEM-quality replacement that restores proper defrost cycling. Installation requires disconnecting power, removing the freezer's rear panel to access the control board mounted near the evaporator, and transferring the wire harness connections — plan for 45-60 minutes if you're comfortable with basic appliance repair.

Compatible LG & Kenmore Models

This defrost control assembly works with the following refrigerator models:

• LFX33975ST/04 — LG French door with door-in-door
• LFX31945ST — LG 31 cu. ft. French door
• LFX31915ST — LG French door with ice/water dispenser
• LFXS30786S — LG 30 cu. ft. InstaView French door
• LFXS29626S/01 — LG 29 cu. ft. French door
• LFXS32736D — LG 32 cu. ft. mega-capacity model
• LSFXC2496S — LG counter-depth French door
• LSFXC2476D — LG counter-depth with craft ice
• 79573153610 — Kenmore Elite French door
• 79573157610 — Kenmore Elite 30 cu. ft.
• 79573163610 — Kenmore Elite with dual ice makers
• 79573165610 — Kenmore Elite stainless French door
• 79573167610 — Kenmore Elite bottom freezer
• 79572042313 — Kenmore French door refrigerator
• 79572042112 — Kenmore 4-door flex model
• 79575053712 — Kenmore counter-depth French door
• 79572183211 — Kenmore French door with water filter

Plus 25+ additional LG and Kenmore models manufactured during the 2010s. Always verify your exact model number before ordering.

Why This Part Fails

Defrost control assemblies typically fail after 5-8 years due to thermal cycling stress and humidity exposure. The control board's solder connections can crack from repeated heating and cooling, or moisture can corrode the circuit traces. You'll know it's failed when frost builds up so thick it blocks airflow from the freezer to the fresh food section, or when the refrigerator can't hold temperature despite the compressor running constantly.

What's Included

The ACM73919214 replacement includes the complete defrost control assembly with integrated circuit board and mounting bracket. Wire harness connectors are pre-attached — you simply unplug the old unit and plug in the new one. No programming or calibration required; the control assembly auto-detects your refrigerator's configuration on first power-up.