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Frigidaire NFTR18X4LS6 refrigerator Parts

Here are the diagrams and repair parts for Frigidaire NFTR18X4LS6 refrigerator, as well as links to manuals and error code tables, if available.

Frigidaire NFTR18X4LS6 refrigerator
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Browse Parts for NFTR18X4LS6 Refrigerators

  • Refrigerator Control Box for Frigidaire NFTR18X4LS6 - Part 240352703

    Shelves diagram

    Refrigerator Control Box

    Part #240352703

    The manufacturer no longer makes this part, and there's no substitute part

Frigidaire Refrigerator NFTR18X4LS6 FAQs

To tell which Frigidaire model you have, find the model/serial label on the refrigerator cabinet (not on a removable drawer or shelf). On a Frigidaire top-mount like model NFTR18X4LS6, the label is typically inside the fresh food compartment near the door opening.

Where to look on a top-mount refrigerator

Check these common label locations first:

  • Inside the refrigerator section on the side wall (near the front)
  • Along the door frame or cabinet opening when the door is open
  • On the ceiling of the fresh food compartment (near the light)
  • Behind the toe grille area (less common)
  • On the back exterior panel (sometimes)
What the model number looks like (and what to write down)

The label usually includes both a model number and a serial number.

  • Model number: identifies the exact design so you get the right parts (gasket, shelf, fan motor)
  • Serial number: helps identify production details used in some manuals and parts lookups
Quick checklist
  • Copy the model number exactly (letters, numbers, and any dashes)
  • Take a clear photo of the label for reference
  • Use the model number when ordering parts or checking diagrams
Why it matters

Parts can vary by model even when refrigerators look similar. Using the exact model number helps match the correct items such as a refrigerator gasket, crisper drawer, or evaporator fan motor for your unit.

Helpful references for this model

Use these resources to confirm labeling and model-specific details:

Resource Best for When to use it
NFTR18X4LS6 owner's manual Model/serial info, use and care When you need operating and identification details
NFTR18X4LS6 installation guide Setup and placement details When you are moving, leveling, or installing the refrigerator

Last updated: February 2026

The most common Frigidaire refrigerator problem is a cooling complaint: the freezer stays cold but the fresh food section warms up. On the Frigidaire NFTR18X4LS6, this usually traces to airflow issues (evaporator fan), dirty condenser area, or a defrost problem that lets frost block airflow.

What to check first (fast, no tools)
  • Confirm the controls were recently changed; after adjustments, wait 24 hours before changing again.
  • Make sure vents in the fresh food section are not blocked by food packages.
  • Listen for the evaporator fan running when the compressor is on (a failed fan often means weak or no airflow).
  • Check for heavy frost on the freezer back wall (a common sign of a defrost system issue).
  • Verify the doors seal fully on all sides; poor sealing causes temperature swings and frost.
Common causes and the parts that often relate

If you are troubleshooting a warm refrigerator section, these are the most frequent culprits on top-mount designs:

Symptom Most likely area What it affects
Freezer cold, fridge warm Evaporator airflow Cold air never circulates into fresh food
Frost/ice buildup in freezer Defrost system Airflow gets blocked by ice
Temps slowly rise over days Condenser airflow or dirty coils System cannot reject heat efficiently
Door not sealing Door gasket Warm air leaks in, moisture freezes

Model-matched parts on this page that may apply during diagnosis include the refrigerator evaporator fan motor 241854301, refrigerator defrost heater 242044008, and refrigerator defrost bi-metal thermostat 5303918202.

Why it matters

Cooling problems are usually progressive: restricted airflow or frost buildup makes the compressor run longer, food temperatures drift upward, and ice can spread into air passages. Catching it early helps prevent spoiled food and reduces strain on the sealed system.

Helpful model-specific references

Last updated: February 2026

Most Frigidaire refrigerators, including top-mount models like NFTR18X4LS6, typically last 10 to 15 years. With steady upkeep (good airflow, tight door seals, correct leveling, and clean components), it is common to reach the upper end of that range.

Typical lifespan and what affects it

A refrigerator’s service life is driven less by the brand name and more by how hard the sealed system and fans have to work to hold temperature.

  • 10 to 15 years is the normal expectation for a household refrigerator
  • Heavy use, hot kitchens, and poor airflow shorten life
  • Door seal leaks and poor leveling increase run time and wear
  • Skipping basic cleaning and inspections leads to early cooling problems
Maintenance that extends life (high impact)

Use these as your baseline routine for a Frigidaire top-mount refrigerator:

  • Keep the refrigerator level and slightly tilted back so doors close consistently (leveling guidance is in the installation guide).
  • Confirm the door seals fully to the cabinet on all sides; warm air leaks force longer compressor run times.
  • Leave proper installation clearances for airflow (sides/top and back clearances are listed in the installation guide).
  • Set temperature controls, then wait 24 hours before making more adjustments (helps avoid over-correcting).
  • If you have an icemaker, connect the water supply correctly and recheck for leaks after 24 hours.
Quick “wear and tear” checkpoints

These are common items that, when worn, make the refrigerator work harder (and feel “old” sooner).

What you notice Likely issue Common fix path
Door not sealing, moisture, warm spots near gasket Door gasket not sealing Clean and reshape gasket; replace if torn (example: refrigerator gasket 242193213)
Warm fridge, noisy airflow, weak circulation Evaporator fan issue Inspect blade and motor (example: refrigerator evaporator fan motor 241854301)
Frost buildup, warming, long run times Defrost system problem Check heater and thermostat (example: refrigerator defrost heater 242044008)
Why it matters

A refrigerator that runs longer to maintain temperature puts extra stress on the compressor, evaporator fan, and defrost system. Keeping doors sealing, airflow clear, and controls stable is the simplest way to protect the cooling system over the long term.

Last updated: February 2026

Frigidaire is not a “low-end” brand; it is generally positioned as a value-focused, mainstream appliance brand that offers solid performance and practical features at a more affordable price point. For your Frigidaire NFTR18X4LS6 top-mount refrigerator, that typically means dependable everyday cooling without premium-tier extras.

What “low-end” usually means (and where Frigidaire fits)

When people say “low-end,” they often mean fewer features, simpler controls, and more basic finishes. Frigidaire commonly fits the mainstream/value category rather than the premium category.

  • Practical designs and widely available replacement parts
  • Straightforward temperature controls and common layouts
  • Good fit for rentals, garages (when rated), and everyday family use
  • Fewer luxury features than premium lines (for example, advanced dispensers or specialty cooling zones)
  • Repairability tends to be straightforward for common issues (fans, gaskets, defrost components)
How to judge your NFTR18X4LS6 specifically

The best way to evaluate where your refrigerator lands is to compare features, noise, and temperature stability against what you need day to day. We recommend using the NFTR18X4LS6 installation guide and your NFTR18X4LS6 owner's manual to confirm setup, clearances, and normal operation.

Quick comparison
Category What you typically get What it means for you
Value/mainstream (common for Frigidaire) Core cooling, simple controls Strong day-to-day reliability for the price
Premium More specialized features and finishes Higher cost, more feature complexity
Why it matters

Brand “tier” matters most when you are deciding what to prioritize: purchase price, feature set, and long-term maintenance. A mainstream refrigerator like the NFTR18X4LS6 often delivers the best value when it is installed correctly (level, proper clearances, good door seal) and maintained (clean seals, stable temps).

Helpful parts that support everyday performance

If you are refreshing the interior or fixing common wear items, these model-matched parts are often the most noticeable upgrades:

Last updated: February 2026

Most common symptoms to help you fix your refrigerators

Choose a symptom to see related refrigerator repairs.

Main causes: leaky door gasket, defrost system failure, evaporator fan not running, dirty condenser coils, condenser fan…

Main causes: control board or cold control failure, broken compressor start relay, compressor motor failure, defrost tim…

Main causes: blocked vents, defrost system problems, evaporator fan failure, dirty condenser coils, bad sensors, condens…

Main causes: blocked air vents, compressor problems, condenser or evaporator fan not working, control system failure, se…

Main causes: water valve leaking, frozen or broken defrost drain tube, overflowing drain pan, cracked water system tubin…

Main causes: damaged door seal, faulty defrost sensor or bi-metal thermostat, broken defrost heater, bad defrost timer o…

Things to do: clean condenser coils, replace the water filter, clean the interior, adjust doors to prevent air leaks, cl…

Main causes: jammed ice cubes, broken ice maker assembly, dirty water filter, kinked water line, bad water valve, freeze…

Most common repair guides to help fix your refrigerators

These step-by-step repair guides will help you safely fix what’s broken on your refrigerator.

How to replace a refrigerator temperature control board

How to replace a refrigerator temperature control board

If the temperature in your refrigerator doesn't match the temperature you set, the problem could be the temperature cont…

Repair time and Difficulty

 30 minutes or less
How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Repair time and Difficulty

 15 minutes or less
How to clean refrigerator condenser coils

How to clean refrigerator condenser coils

Help your refrigerator run more efficiently by cleaning the condenser coils. It's easy and takes just a few minutes.…

Repair time and Difficulty

 15 minutes or less

Effective articles & videos to help repair your refrigerators

Use the advice and tips in these articles and videos to get the most out of your refrigerator.

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How to Replace the Water Filter in a Universal/Multiflex Refrigerator

Learn how easy replacing the water filter in a Universal/Multiflex refrigerator is.…

How to Replace the Water Filter in a KitchenAid Refrigerator

How to Replace the Water Filter in a KitchenAid Refrigerator

Discover how easy it is to replace the water filter in your KitchenAid refrigerator.…

Troubleshooting a refrigerator not cooling video

Troubleshooting a refrigerator not cooling video

Learn what to check if the inside of your fridge is wayyyy too warm.…

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