Can I replace fridge parts myself?
Yes. On the LG LDC22720SW bottom-mount refrigerator, we recommend DIY replacement for many non-sealed-system parts (handles, gaskets, switches, shelves, drawer hardware, and some ice maker and water parts) as long as you unplug the refrigerator and follow the LDC22720SW owner's manual. For sealed-system or advanced electrical repairs, use a service technician.
Here’s a practical way to decide.
- Usually DIY-friendly: door switch, door gaskets, door handle, shelves and drawers, slide rails, drain tube
- Often DIY but more involved: ice maker assembly, water inlet valve (requires shutting off water and checking for leaks)
- Technician-only: compressor, evaporator, sealed refrigerant lines, complex wiring diagnostics
| Repair type | What you’ll handle | Typical risk level |
|---|---|---|
| Mechanical (doors, drawers, shelves) | Screws, clips, alignment | Low |
| Water/ice (valves, ice maker) | Water shutoff, leak checks | Medium |
| Cooling system (compressor/evaporator) | Refrigerant system work | High |
These are examples of parts available for LG LDC22720SW that are commonly replaced during DIY repairs:
- LG refrigerator door switch 6600JB1010A (light not working, door alarm issues)
- LG kenmore refrigerator freezer door gasket ADX73350925 (warm spots, frost, moisture)
- Ice maker assembly (AEQ72909602) - refrigerator ice maker part by LG AEQ72909602 (no ice, small cubes)
- LG refrigerator water inlet valve AJU73753101 (no water to ice maker, slow fill)
- Unplug the refrigerator (or switch off the breaker).
- Turn off the household water supply if you’re working on water/ice parts.
- Take photos of wire connectors and tubing routing before disconnecting anything.
- Keep screws organized by step; many LG assemblies use different lengths.
- After reassembly, restore power and confirm: door seals close evenly, fans run normally, and no water leaks.
Choosing the right repair level prevents repeat failures and protects the cooling system. Simple parts like a door gasket or door switch can fix temperature swings and condensation without the cost of a service call.
Last updated: February 2026
What is the most common problem with an LG refrigerator?
Cooling problems are the most common issue we see with LG refrigerators, including the LG LDC22720SW; symptoms include warm fresh food, a freezer that will not hold temperature, or inconsistent temps. Ice maker and water dispensing issues are also frequent, often tied to water supply, valves, or freezing in the fill system.
- Fresh food section warm but freezer seems OK (airflow or evaporator fan issue)
- Freezer warm and refrigerator warm (sealed system or compressor-related issue)
- Clicking, buzzing, or repeated start attempts (start device or compressor circuit)
- Heavy frost on the freezer back wall (defrost system problem)
- No ice or slow ice production (ice maker, fill valve, or water pressure issue)
- Confirm settings: refrigerator about 37°F, freezer about 0°F.
- Make sure vents are not blocked by food packages.
- Clean condenser coils and verify the condenser fan runs.
- Check door sealing and alignment; a poor seal causes temperature swings and frost.
- If the unit has a water/ice system, confirm household water pressure and that the supply valve is fully open.
| Symptom | Common area to inspect | Example part for this model |
|---|---|---|
| Warm temps, poor airflow | Freezer airflow | Refrigerator evaporator fan motor 4681JB1027N |
| Frost buildup, warm temps | Defrost system | Refrigerator defrost sensor assembly 6615JB2005C and refrigerator defrost heater 5300JB1100J |
| No ice, no water fill | Water supply control | LG refrigerator water inlet valve AJU73753101 or refrigerator water inlet valve assembly AJU55759303 |
A refrigerator that is not cooling correctly can spoil food quickly and forces the compressor and fans to run longer. Catching airflow, defrost, or water-supply problems early often prevents bigger failures and reduces energy use.
Use the LDC22720SW owner’s manual to confirm temperature control locations, airflow paths, and any model-specific troubleshooting steps. For ice maker symptoms, we also recommend following common refrigerator ice maker problems and solutions to narrow the cause before replacing assemblies.
Last updated: February 2026
Is it hard to get parts for LG appliances?
No. For LG appliances, parts availability is usually good when you match the exact model number and use the correct part ID or part number. For the LG LDC22720SW bottom-mount refrigerator, we stock common repair parts like switches, gaskets, valves, and ice maker components; check the LDC22720SW owner's manual for model-specific part identification and diagrams.
- The model number suffix matters (for example, color and revision); always match LDC22720SW exactly.
- Some parts are model-specific (door bins, shelves, drawer rails) and won’t fit close model families.
- Names vary (a “water valve” might be listed as an inlet valve or inlet valve assembly).
- Older models can have more substitutions as parts get updated.
- Shipping time can vary by part type (cosmetic parts often differ from functional parts).
Use this checklist before you buy:
- Confirm the full model number from the rating label inside the fresh food section.
- Compare the part name and ID to the symptom (for example, no ice vs. leaking water).
- Cross-check the exploded-view diagram in the manual.
- If the issue is water or ice related, verify your home water supply is on and the line is not kinked.
| Symptom | Likely part category | Example part for this model |
|---|---|---|
| Light stays off or won’t turn off | Door switch | LG refrigerator door switch 6600JB1010A |
| No ice or slow ice production | Ice maker or water valve | Ice maker assembly, inlet valve |
| Water leaking or puddles | Drain system | Refrigerator drain tube |
| Frost buildup, warm temps | Defrost system | Defrost sensor, defrost heater |
Ordering by brand alone leads to wrong-fit parts and repeat repairs. Ordering by LG model LDC22720SW plus the correct part ID improves fit, restores cooling performance, and reduces downtime.
Last updated: February 2026
How does LG's Knock-Knock fridge work?
LG’s “knock-knock” feature is the InstaView Door-in-Door design: you double-tap the glass panel so the interior lights turn on, letting you see inside without opening the door. The LG LDC22720SW bottom-mount refrigerator is not typically an InstaView model; use the LDC22720SW owner’s manual to confirm which door and lighting features your unit has.
On InstaView models, the glass panel acts like a window when activated.
- Double-tap the glass panel (usually two quick knocks)
- The compartment light turns on for a short time
- You can check frequently used items without opening the main door
- Less door opening helps reduce warm air entering the fresh food section
- The feature relies on the door’s light circuit and control logic
Because features vary by series and production run, verify what your specific refrigerator includes.
| Item to verify | Where to look | What it tells you |
|---|---|---|
| Door style | Door has glass panel or standard door | Whether InstaView is even possible |
| Control panel options | Display labels and settings | Whether “InstaView” or Door-in-Door is supported |
| Interior light behavior | Light turns on with door open | Confirms basic lighting circuit operation |
| Door switch operation | Light turns off when door closes | Helps rule out a stuck switch |
If your interior light does not behave normally (stays off or stays on), a common fix is replacing the LG refrigerator door switch 6600JB1010A.
Seeing inside without opening the door can help temperature stability and reduce moisture swings, which supports food freshness and can reduce frost buildup over time.
Last updated: February 2026
How to reset an LG refrigerator?
For the LG LDC22720SW bottom-mount refrigerator, the most reliable reset is a power reset: unplug the refrigerator (or switch the circuit breaker off) for 1 minute, then restore power. This reboots the control board and often clears minor glitches after a power outage or control-panel odd behavior.
- Power reset (recommended): Power off for 60 seconds, then power back on.
- Control lock check: If buttons do not respond, turn off Control Lock (if enabled) and retry.
- Filter indicator reset: Use the filter reset method shown in the LDC22720SW owner’s manual.
- Ice maker reset: If ice production is stuck, reset the ice maker and confirm the shutoff arm is down.
- Door switch check: If the interior lights or fan behavior seems wrong, a failed door switch can mimic control issues; see the LG refrigerator door switch 6600JB1010A.
- Move any perishable items to a cooler if you expect the doors to be open for long.
- Unplug the refrigerator, or turn the breaker off.
- Wait 60 seconds (this lets the control fully power down).
- Restore power.
- Allow 5 to 10 minutes for the compressor and fans to resume normal cycling.
| Symptom | Reset helps most when | If it comes back quickly, check |
|---|---|---|
| Control panel frozen or beeping | After a brief power interruption | Door not closing, door switch, loose wiring |
| Ice maker not cycling | After a jam or temporary glitch | Water supply, inlet valve, ice maker assembly |
| Temps drifting briefly | After doors were left open | Dirty condenser area, fan issues, gasket leaks |
A reset clears temporary logic faults in the electronic control and restarts normal cooling and defrost timing. If the same symptom returns, the refrigerator is usually reacting to an input problem (door switch, temperature sensing, airflow, or water supply) rather than needing repeated resets.
Last updated: February 2026
What are the most commonly replaced parts in a refrigerator?
In an LG bottom-mount refrigerator like model LDC22720SW, the most commonly replaced parts are the ones that handle sealing, airflow, defrosting, and water delivery. These parts wear out from normal use, ice buildup, or mineral deposits long before major sealed-system components.
- Door gaskets: keep warm air out; worn seals cause frost and temperature swings (example: LG kenmore refrigerator freezer door gasket ADX73350925).
- Door switch: turns the interior light off and helps the unit “know” the door is closed (example: LG refrigerator door switch 6600JB1010A).
- Water inlet valve: feeds water to the ice maker and dispenser; can clog or fail electrically (examples: LG refrigerator water inlet valve AJU73753101, refrigerator water inlet valve assembly AJU55759303).
- Ice maker parts: common when ice production stops or cubes are misshapen (example: ice maker assembly (AEQ72909602) - refrigerator ice maker part by LG AEQ72909602).
- Defrost system parts: prevent ice from choking airflow (example: refrigerator defrost heater 5300JB1100J, refrigerator defrost sensor assembly 6615JB2005C).
- Fan motors: move cold air through the compartments (example: refrigerator evaporator fan motor 4681JB1027N).
| Symptom | Most likely part area | Example part for LDC22720SW |
|---|---|---|
| Frost buildup, doors not sealing | Door gasket | ADX73350925 |
| Light stays on, door alarm issues | Door switch | 6600JB1010A |
| No ice or slow ice | Ice maker or water valve | AEQ72909602, AJU55759303 |
| Warm fridge, freezer OK (or vice versa) | Evaporator fan or defrost | 4681JB1027N, 5300JB1100J |
| Water leaking inside or under unit | Drain system | 5251JA3003D |
Replacing common wear parts early helps protect food temperatures and reduces strain on expensive components like the compressor. For model-specific diagrams and part locations, use the LDC22720SW owner's manual.
Last updated: February 2026
What are the disadvantages of LG refrigerators?
LG refrigerators, including the LG LDC22720SW bottom-mount style, are often criticized for higher-cost cooling-system repairs and more frequent ice maker and water system complaints than simpler, no-dispenser models. The biggest practical downside is that when a key sealed-system or airflow part fails, food temperatures can rise quickly.
- Cooling problems: Warm refrigerator section, warm freezer, or wide temperature swings.
- Compressor or start issues: Clicking, repeated attempts to start, or the unit not cooling.
- Ice maker performance: Slow ice production, clumping, or no ice.
- Water system leaks or no water: Drips behind the unit, low flow, or no fill to the ice maker.
- Frost buildup: Excess frost on the evaporator area leading to restricted airflow.
- Higher repair complexity: More sensors, valves, and fans means more potential failure points.
Start with the basics that cause the most “it stopped cooling” and “no ice” calls.
| Symptom | Most likely area | Parts that commonly relate |
|---|---|---|
| Lights work but not cooling well | Airflow or defrost | Evaporator fan motor, defrost heater, defrost sensor |
| No ice or small cubes | Water supply or fill | Water inlet valve, ice maker assembly |
| Water under/behind fridge | Drain or water line | Drain tube, water inlet valve |
| Interior light stays off/on incorrectly | Door sensing | Door switch |
If your symptom matches, these model-compatible parts are common starting points:
- Refrigerator defrost sensor assembly 6615JB2005C (helps the control manage defrost and prevent heavy frost)
- Refrigerator defrost heater 5300JB1100J (melts frost off the evaporator during defrost)
- Refrigerator evaporator fan motor 4681JB1027N (moves cold air through the compartments)
- LG refrigerator water inlet valve AJU73753101 (controls water flow to dispenser and ice maker)
- Ice maker assembly (AEQ72909602) - refrigerator ice maker part by LG AEQ72909602 (ice production and harvesting)
Most “disadvantages” show up as temperature instability or water/ice interruptions. Catching early signs (odd noises, frost, slow ice, puddles) helps prevent food loss and can reduce the scope of a repair.
Use the LDC22720SW owner's manual to confirm your temperature settings, control features, and the correct troubleshooting steps for your specific door, ice maker, and water setup.
Last updated: February 2026





