- “Demo mode looks exactly like a broken refrigerator and clears in ten seconds”
- “Three separate fan codes, and the usual cause of all three is ice rather than a dead motor”
- “The sealed system is last, and it is measured rather than assumed”
Symptom
LG refrigerator not cooling
The most common call on this badge, and the first check is free. An LG refrigerator has a showroom mode that lights the whole panel, runs the fans and cools nothing at all, and it gets switched on at home by accident often enough that we ask about it on the phone before anything else.
- From $95 diagnostic, credited to the repair
- 59 cities and neighborhoods covered
- OEM parts available on order
- In writing the price, before anything is opened
Six ordinary causes
What this usually turns out to be
Cheapest and commonest first, which is also the order we check them in. They sit hundreds of dollars apart, and only the unit settles which one is yours.
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Demo mode
LG's showroom setting. Everything lights, nothing cools. Free to clear and the first thing we ask about.
Diagnostic visit from $95 -
An iced evaporator or a stopped fan
LG publishes CF, FF and rF for the three fans and its own explanation for each is a blade the machine has detected as blocked. In this climate the blockage is usually frost.
Evaporator fan repair from $165 -
The defrost circuit
A heater or sensor that has stopped clearing the coil seals the airway in ice over weeks. dS is the sensor half of it.
Defrost system repair from $175 -
A condenser packed with dust
The coil that sheds the heat cannot shed it. Common in a coastal kitchen and cheap to put right.
Condenser cleaning service from $125 -
A door that stopped sealing
Nine wet months a year is hard on a gasket, and a cabinet fighting its own door runs constantly and still loses.
Door seal replacement from $145 -
The sealed system
Real, uncommon, and last. It is measured with gauges rather than guessed at, and on this make the compressor warranty is checked before anything is quoted.
Sealed system repair from $595
In five minutes
Before you call anybody
None of it needs tools, and all of it makes the visit shorter.
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01
Read the display for a mode, not just a code
A panel that is lit and responsive with a cabinet that never cools is demo mode until proved otherwise.
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02
Force the machine to show its code
Hold Freezer Temperature and Express Frz together for three seconds. LG documents this, and it matters after a power cut because the display clears and the condition does not.
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03
Measure both compartments
A thermometer on a middle shelf in each, not a hand and not the panel. Which one is warm, and by how much, decides everything after this.
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04
Listen for the fans
Hold the door switch in. A freezer fan you can hear is a different problem from one you cannot.
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05
Look at the back wall of the freezer
Frost across the vents is the defrost circuit, and it is the finding that changes the visit.
How it shows up
What people describe when they call
A shortcut
Narrow it down before anybody arrives
A description of the behaviour leaves a few possible causes. A code names the subsystem before anybody opens anything, which is why it is worth photographing before it clears.
If there is no code at all
LCFC26XSS
LCFS22EXS
LF20G6331S
LFC21776D
LFCC22426S
LFCS22520B
LFDS22520S
LFX21976ST
LFXC22526D
LFXS24566S
LH29S8565S
LHFS28XBS
The data plate is inside the cabinet, upper left wall or behind the grille. All models
In more detail
About LG refrigerator not cooling
The two checks that cost nothing
Look for a mode before you look for a part. Demo or display mode leaves the panel alive, the light on and the compressor deliberately switched off; LG's way out of it is to open the fresh food door, hold FRIDGE and press Express FRZ three times, or on some models hold both for three seconds until it chimes. Then look at the load. A freezer packed hard against the back wall blocks the vents the cold arrives through, and the fix is to move food rather than to buy anything. Between them those two account for a real share of the calls we take on this make.
What it usually means, by the kind of LG appliance
LG sells one appliance in several forms — five shapes of washer, three kinds of dryer, four fuels of range — and the same behavior points at different things on each of them. A built-in side-by-side and an integrated column are not the same service situation, and a dual-fuel range and an induction range fail in different halves.
- French door — One system usually feeds both compartments through a damper, so a warm fridge with a hard freezer is an air question rather than a cooling one. Start at the vents in the back wall of the fresh food side.
- Side-by-side — Two tall narrow compartments and a long air path between them. Frost on the evaporator shows up as a fresh food side that will not hold while the freezer stays perfect.
- Top and bottom freezer — The simplest layout and the easiest to read: one evaporator, one fan, and a single defrost circuit. If both compartments are drifting together, look at the machine room rather than inside.
Why a mode gets checked before a part
Every make has a showroom mode and LG's is unusually easy to trigger: the door gets held open while a child leans on the panel, or a machine arrives straight from a display floor with the setting still on. The result is completely convincing — lights, buttons, interior lamp, fans — and nothing cools, because the compressor is switched off by design. We have arrived at more than one house where the whole visit was ten seconds of button holding, and we would rather tell people how to check it on the phone.
Air, then defrost, then gas
After the mode, the order is always the same and it goes from free to expensive. Air first: vents blocked by food, a fan that has stopped, a condenser coil packed with dust. Defrost second: a coil sealed in ice cannot pass air however well the fan turns, and that is the slow failure that takes three weeks to show. The sealed system is last, it is uncommon, and it is the only one that needs gauges. Anybody who quotes a compressor before measuring has skipped two steps that are cheaper than the one they are selling.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards
Before you book
Questions about LG refrigerator not cooling
It runs constantly and it is still not cold.
That usually means cold is being made and not delivered, or that the cabinet cannot shed the heat it is producing. Ice on the evaporator, a stopped fan or a packed condenser all give exactly this. It is also a good sign for the repair: a compressor that runs continuously is a compressor that is alive.
Someone quoted me a compressor over the phone.
Then they guessed, because a sealed-system diagnosis needs gauges on the machine. On this make there is a second reason to be careful: LG's linear compressors carry a long parts warranty that follows the machine rather than the owner, so a covered cabinet changes the number considerably. That is worth establishing before anybody agrees to anything.
How long do I have before the food is a problem?
About four hours in a refrigerator with the door kept shut, and about forty-eight in a full freezer. A half-empty freezer is closer to twenty-four. Keeping the doors closed is worth more than anything else you can do while waiting.
Where we do it
Across Miami-Dade, Broward, and Palm Beach
Same terms everywhere we go: an on-site diagnostic first, the price agreed in writing, and the exact figure confirmed once we have seen the unit.
Neighborhoods people ask for by name