Direct answer
For the LG LRSXS2706 side-by-side refrigerator, protect food first, then separate settings/doors/airflow from compressor or sealed-system failure. First, measure fresh-food and freezer temperature after doors remain closed.
What this covers
- LG LRSXS2706 side-by-side refrigerator (LRSXS2706*)
- LG side-by-side refrigerator; full-height fresh-food and freezer compartments side by side.
- The specific fault this record addresses: is not cooling enough
What it does not cover
- ×The same symptom on a different LG product line, which has its own record and its own cited source
- ×An on-screen error code whose meaning has not been checked against this exact model's manual
- ×Live electrical, gas, sealed-system, internal battery-cell or structural repair — a technician boundary, not a self-service step
Differential
What actually causes this, and how to tell them apart
These are ordered by how often each one is the answer, not by how easy it is to try. The point of the middle column is that two causes producing the same headline symptom rarely produce the same detail — that detail is what tells you which one you have before you change anything.
- 1
The evaporator fan has failed
What separates it The freezer is still cold or even frozen solid while the fresh-food compartment is warm, and no fan noise is audible from the freezer when the door switch is held in.
How to confirm That combination is close to definitive: the compressor is making cold, but nothing is moving it into the fresh-food side. Hold the freezer door switch in with the door open and listen — a working evaporator fan is clearly audible.
- 2
Frost has blocked the evaporator, so air cannot pass
What separates it Cooling has degraded gradually over days, and there is heavy frost buildup visible at the back of the freezer or behind the rear freezer panel.
How to confirm See frost-ice-buildup. A defrost-system failure lets frost accumulate until it blocks airflow entirely — the machine is still making cold, but the air cannot get past the ice.
- 3
The condenser coils are choked with dust
What separates it Both compartments run warm, the compressor runs almost constantly, and the coils underneath or behind the unit are visibly matted with dust and pet hair.
How to confirm The condenser has to shed heat to the room. When it cannot, the whole system loses capacity. This is owner-serviceable maintenance and one of the most common real causes.
- 4
Airflow vents inside are blocked by food
What separates it One area is warm while another is fine, and packages are pressed against the vents at the back or top of a compartment.
How to confirm Cold enters each compartment through specific vents. Blocking them starves that compartment while the rest of the machine works normally.
- 5
The doors are not sealing
What separates it Warm compartments with condensation or frost near the door edges, and a dollar bill placed across the seal pulls out with no resistance.
How to confirm See door-not-closing. A door held ajar by a drawer or a bottle is a very common cause of a whole compartment warming up overnight.
- 6
Demo, showroom or Sabbath mode is active
What separates it The lights and display work normally but the compressor never runs at all. Demo mode is designed to make a floor-model look alive without cooling.
How to confirm Check the manual for this model's demo-mode indicator and exit sequence. It is occasionally left on after delivery, and it presents as a total cooling failure on a machine that is otherwise perfect.
- 7
The compressor or sealed system has failed
What separates it Both compartments are warm, condenser coils are clean, and either the compressor never runs or runs constantly without producing any cold.
How to confirm This is the conclusion once airflow, frost, coils, seals and demo mode are eliminated, and is a major service repair.
Before you touch a setting
Record this first — changing settings destroys the evidence
Every item below stops existing the moment a reset, re-pair or settings change is made. Written down first, they are what separates the causes above; recovered afterwards, they are guesswork.
- Which compartment is warm — the freezer, the fresh-food side, or both. This single fact splits the diagnosis in half before anything else.
- Whether the evaporator fan is audible when the freezer door switch is held in.
- Whether the condenser coils underneath or behind the unit are matted with dust.
- Whether the compressor runs at all, runs constantly, or cycles normally.
- Actual measured temperatures in both compartments after the doors have stayed shut for several hours, rather than an impression.
Move perishable food to safety before troubleshooting
ReversibleDiagnosis takes time, and food safety does not wait for it.
Determine whether the freezer is still cold while the fresh-food side is warm
ReversibleA cold freezer with a warm fresh-food compartment points directly at the evaporator fan or the duct between them, not at the cooling system.
Hold the freezer door switch in and listen for the evaporator fan
ReversibleIts absence, combined with a cold freezer, is close to a definitive diagnosis.
Clean the condenser coils and confirm clearance around the unit
ReversibleThis is routine owner maintenance and a common real cause of general capacity loss.
Clear food away from the internal vents and check the door seals
ReversibleBoth starve a compartment while the rest of the machine works normally.
Check for demo or showroom mode before assuming a compressor fault
ReversibleIt runs the lights and display while never cooling, and is sometimes left on after delivery.
Model-specific
What is true of this model and not of its siblings
Generic advice for the product line fails here. Each item below is a property of this specific model family that changes which of the steps above apply to you.
- Model scope
- LRSXS2706*. LG side-by-side refrigerator; full-height fresh-food and freezer compartments side by side.
- Type — SIDE-BY-SIDE
- A side-by-side fridge — freezer left, fridge right, full height each. Narrower compartments than a French door, so wide items may not fit; that is the layout, not a fault.
- Ice & dispenser
- In-door ice maker and external water/ice dispenser. Ice/water faults trace to the water line, filter and freezer temperature; the in-door ice maker and its fill line are a common ice-fault location on side-by-sides.
- Cooling — Linear Compressor
- Linear Compressor (10-year warranty), quiet variable-speed — a steady hum is normal. A warm fridge side is often a door seal or blocked vents from the freezer side.
- Symptom boundary
- This record covers LG LRSXS2706 side-by-side refrigerator when it is not cooling enough. A different symptom on the same hardware, or this symptom on a different LG product line, has its own record with its own causes and its own cited source.
Stop boundary
When this stops being a self-service repair
Continuing past any one of these costs more than the repair saves — in safety, in warranty, or in evidence a technician needs.
- !Move perishable food elsewhere and discard anything that has been above 40°F for more than about two hours — food safety comes before any diagnostic step.
- !Unplug the unit for smoke, arcing, a burning smell, or a compressor that is too hot to touch briefly.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Where the manufacturer's article stops. LG publishes this as "Troubleshooting an LG refrigerator not cooling properly". LG's article for a fridge compartment that is not holding temperature. What that article does not carry is the model boundary — it is written for a product line, and LRSXS2706* is the scope applied here. Where a control label, terminal, indicator pattern or reset sequence differs on your unit, the manual for that exact model is the authority, not this page and not the article.
Exact questions
Common follow-ups
My LG LRSXS2706 dispenser makes noise but no water comes out.+
If the dispenser motor runs but no water flows, the water line is likely frozen or blocked, or the filter is overdue. After a filter change, purge air by running several glasses. A frozen dispenser line happens when the door area runs too cold — some models have a line heater. If it is also not making ice, the whole water supply (valve, line, filter) is the place to look, since the ice maker and dispenser share it.
The freezer is still frozen but the fridge section is warm.+
That combination is the single most useful clue there is, and it usually means the evaporator fan has failed. Almost all refrigerators make cold in one place — the freezer — and blow it into the fresh-food compartment. A cold freezer proves the cooling system works; a warm fresh-food side then means the cold is not being moved. Hold the freezer door switch in and listen for the fan.
It has lights and the display works but nothing is cold.+
Check for demo or showroom mode before anything else. It exists so floor models can look fully alive without running the compressor, and it occasionally gets left on after delivery — which presents exactly as a total cooling failure on a machine that is actually fine. The manual will give the exit sequence for the model.
How long should I wait after adjusting the temperature?+
Give it at least 24 hours with the doors kept shut before judging. A refrigerator recovers slowly, and repeatedly opening the door to check defeats the measurement you are trying to take.
Does this answer apply to every LG model?+
No. It is scoped to LRSXS2706*. LG side-by-side refrigerator; full-height fresh-food and freezer compartments side by side.
What should I record before troubleshooting not cooling or warm fridge?+
Record the complete model identifier, exact message or indicator, software/firmware where visible, the operating stage and what still works.
Why is a factory reset not the first step?+
A reset can erase accounts, networks, maps, schedules or preferences without distinguishing not cooling, warm fridge. The ordered checks preserve that evidence.
When should I stop and use qualified service?+
Move perishable food if temperatures are unsafe; unplug for smoke, arcing or burning odor.
Answer for the exact device and software version shown above.