LG Fridge Error Codes — Complete Australian Guide (2026)

Quick answer: LG fridge error codes are two-letter shorthand: the first letter names the component, the second usually says sensor or fan. Er FF is the freezer fan, Er IF the ice maker fan, Er CF the condenser fan, Er dH a defrost failure, and Er rS/FS/IS are sensors. The parts behind the most common codes run $15.95 to $79.95 AUD with same-day dispatch from our Sydney warehouse.

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Last updated July 2026

LG fridges are chatty machines. The control board monitors every fan, sensor and heater in the cabinet, and when one stops answering, the display spells out exactly which one — Er FF, Er IF, Er dH — in a code system that is actually more logical than most brands’, once someone hands you the key.

This is the key. It covers the error codes widely documented on LG fridges sold in Australia — the GT, GB, GF, GS and GR bottom-mount and French door ranges and the side-by-side models — what each code means, which are ten-dollar-sensor problems, which are fan motors, and which are the small set that genuinely need a technician. LG’s washers speak a similar dialect; that decoder lives in our LG washing machine error codes guide.

What do LG fridge error codes mean?

Crack the pattern and you can half-diagnose an LG fridge from across the kitchen. Most codes are two characters after “Er” (some displays drop the Er and just flash the letters):

• Second letter F = a fan. FF is the freezer fan, IF the icing (ice maker) fan, CF the condenser fan. The board spins each fan and counts the feedback pulses; no pulses, or the wrong speed, and it flags the fan.
• Second letter S = a sensor. rS is the refrigerator (fridge) sensor, FS the freezer sensor, IS the ice maker sensor, SS the pantry sensor, HS the humidity sensor. A sensor code means the thermistor is reading open or short circuit — a broken wire, a corroded plug, or a failed sensor.
• dH = defrost. The board ran a defrost cycle and the evaporator never reached the target temperature in time, which points at the defrost heater, the defrost sensor or the termination thermostat.
• CO = communication. The display board and main board stopped talking to each other.

The practical upshot: the majority of LG fridge codes are caused by parts in the $15–$80 range, and the code tells you which compartment to open before you have touched a screwdriver.

LG fridge error code matrix

Only widely documented codes for LG models sold in Australia are listed. If your display shows something else, note it along with the model number from the model sticker inside the fridge compartment, and run it through the part finder.

Code	What it means	Most likely cause	The fix / part
Er FF	Freezer (evaporator) fan error	Fan iced up after a defrost failure, or motor dead	Defrost fully, then e.g. evaporator fan motor 4680JB1019T/F — $29.95 — match your model
Er IF	Ice maker (icing) fan error	Ice compartment fan frozen or failed	Full walkthrough in our LG Er IF error guide
Er CF	Condenser fan error	Dust-seized condenser fan at the rear	Condenser fan motor 4680JB1026B — $39.95 or EAU65058326 — $54.95
Er dH	Defrost failure — evaporator did not warm in time	Defrost heater, defrost sensor or termination thermostat	Defrost termination thermostat 6615JB2002T — $15.95 — or heater, match your model
Er dS	Defrost sensor error	Defrost sensor open/short circuit	Replace the sensor — find it by model
Er rS	Refrigerator (fridge) sensor error	Fridge compartment thermistor failed	Temperature/humidity sensor 6500JB2001B — $19.95 — match your model
Er FS	Freezer sensor error	Freezer thermistor open/short circuit	Sensor matched to your model — part finder
Er IS	Ice maker sensor error	Ice maker thermistor or harness fault	Sensor or ice maker assembly — match your model
Er SS	Pantry (fresh zone) sensor error	Pantry drawer sensor failed	Sensor matched to your model — part finder
Er HS	Humidity sensor error	Humidity sensor drifted or failed	Temperature/humidity sensor 6500JB2001B — $19.95 — match your model
Er rt	Room temperature sensor error	Ambient sensor open/short circuit	Sensor — find it by model
Er gF	Water flow error	Low water pressure to the ice/water system, kinked hose, or flow sensor	Check tap and hose first; else flow sensor — part finder
Er CO	Communication error between display and main board	Loose harness or board fault	Reseat connectors (power off); persistent = technician

Two display quirks worth knowing. First, some newer LG models show fan faults as numbers — if you see a code like 1F or 15 where the ice fan lives, treat it as the icing fan family and start from the Er IF guide. Second, on LG’s segment display the letters can render oddly — dH can look like “d4”, rS like “r5”. When in doubt, photograph the display and check it against your manual before ordering anything.

How do I reset an LG fridge error code?

Always reset before you spend money, because LG boards will keep displaying some codes after a transient glitch — a power flicker, a door left open on a hot day, one missed fan reading.

1. Unplug the fridge at the wall (or flip its circuit breaker). The display off is not enough.
2. Wait five minutes. LG’s boards hold charge; a short reset can leave the code latched.
3. Power back on and let the fridge run for half an hour before re-checking the display.

If the code returns, it is real — go to the matrix. A genuinely useful LG extra: most models made in the last decade support Smart Diagnosis. With the LG ThinQ app (or the older phone-tone method described in your manual), the fridge transmits its fault log for interpretation, which is a handy second opinion before ordering a part.

One warning on the most tempting shortcut: do not just keep resetting an Er dH or fan code to buy time. Every day a defrost fault runs, ice creeps further over the evaporator, cooling drops, and the compressor works harder. We see the end state of that story weekly — a fridge warm up top and a freezer working fine below, exactly the symptom pattern in our Hisense freezer-cold-fridge-warm guide, and the physics is identical on an LG.

Which LG codes point to a part failure?

Here are the LG fridge parts we stock that map straight onto the matrix, all in stock and dispatched same day from our Sydney warehouse when ordered before cut-off.

Part	Suits	Price	Buy
Evaporator (freezer) fan motor 4680JB1019T / 4680JB1019F	Er FF on many GR/GN bottom-mount models — match your model	$29.95 AUD	Buy now
Evaporator fan motor DC12V	Suits GF-L570, GF-LN500, GF-V500, GF-V570, GF-V910	$58.95 AUD	Buy now
Evaporator fan motor DC13V 4681JB1027A	Freezer fan faults — match your model	$32.95 AUD	Buy now
Condenser fan motor 4680JB1026B	Suits GR-B197DVCA, GR-B207EC, GR-L247EQ (Er CF)	$39.95 AUD	Buy now
Condenser fan motor EAU65058326	Er CF on later models — match your model	$54.95 AUD	Buy now
Temperature/humidity sensor 6500JB2001B	Sensor codes (Er rS / Er HS family) — match your model	$19.95 AUD	Buy now
Defrost termination thermostat 6615JB2002T	Er dH defrost circuit — match your model	$15.95 AUD	Buy now

LG used different fan motors and sensors across the GT, GB, GF, GS and GR families, so the golden rule is: model sticker first, part second. Every product page lists the exact models it suits; if yours is not there, the part finder or the full refrigerator and freezer parts range will get you to the right variant.

And the same caution as any fan code on any brand: defrost the machine completely before condemning a fan motor. A solid share of Er FF and Er IF faults are healthy fans locked in a block of ice because the defrost system failed first. Twenty-four hours unplugged with the doors open costs nothing and often reveals that the real fix is the $15.95 defrost thermostat, not the fan.

Which codes do not need a part at all?

Not everything the display shows is a component failure. Before ordering anything, rule these out:

• Door alarm or door icons. A door held open (or a door that will not quite pull shut) triggers beeping and door warnings, and a slow air leak mimics cooling faults. Check the seal: a worn or split gasket is the cheapest fault on any fridge and the fix is a ten-minute job — see our fridge door seal replacement guide.
• Demo / display mode. Like most brands, LG fridges have a showroom mode that lights the display but disables cooling — usually showing OFF on the temperature display. The exit combination is model-specific and listed in your manual; no part is involved.
• Codes after a blackout. Storm-season power flickers can latch a one-off code. Reset per the steps above; only a code that returns on stable power is a genuine fault.
• Er gF after plumbing work. If the water flow code appears right after the tap was off or a hose was moved, it is nearly always pressure, not parts. Confirm the isolation tap is fully open and the hose is unkinked before touching the fridge.

When should I call a technician?

Most rows in the matrix are honest DIY territory for a competent person: sensors clip in, fan motors are a panel and a plug, and the defrost thermostat is two spade terminals. The non-negotiable rule for all of them: unplug the fridge at the wall before removing any internal panel. Defrost heaters are mains-voltage parts — treat every wire behind the panels as live until the plug is in your hand, photograph connectors before unplugging them, and hand the job to a qualified appliance technician if any step is beyond your comfort zone.

Three situations are firmly technician territory:

1. A persistent Er CO after reseating the harness connectors — board-level diagnosis.
2. Compressor faults — if the fridge stops cooling entirely with no fan or sensor code, or clicks on and off at the compressor. Refrigerant and sealed-system work in Australia legally requires an ARCTick-licensed technician.
3. Any repeat code after a correct part swap — the board itself may be the fault, and boards are cheaper to have diagnosed than to buy twice.

Plenty of tradies around Sydney and the Northern Beaches will fit a part you supply, which keeps a fan-motor or heater job to a modest call-out fee instead of a full parts-and-labour bill.

Related guides: LG fridge parts guide

Frequently asked questions

Where do I find the model number on my LG fridge?

On the model sticker inside the fridge compartment — usually on the left or right side wall, or low down behind the crisper drawers. It reads like GF-V570MBL or GT-515BPL. Photograph it before ordering; LG used several fan and sensor variants across model families and the sticker is the only reliable match.

What does Er FF mean on my LG fridge?

Er FF is a freezer fan error: the evaporator fan is not spinning as commanded. It is either seized in ice (defrost the fridge fully for 24 hours and it may clear) or the motor has failed. Replacement evaporator fan motors start at $29.95 AUD with same-day Sydney dispatch — match the motor to your model sticker.

What does Er IF mean, and is it the same as 1F?

Er IF is the icing fan — the small fan that chills the ice maker compartment. Some newer displays show fan faults as numbers, so a 1F-style code in the same position generally points to the same fan family. Our dedicated LG Er IF guide walks the diagnosis step by step.

What does Er dH mean on an LG fridge?

The defrost cycle ran but the evaporator never warmed to target in time. The usual suspects are the defrost heater, the defrost sensor, or the termination thermostat ($15.95 AUD). Left unfixed, ice slowly blocks the airflow and the fridge compartment goes warm while the freezer still works.

How do I reset my LG fridge?

Unplug it at the wall, wait five minutes, plug it back in. That clears codes latched by power flickers or one-off glitches. If the same code returns, a real component is out of range — decode it in the matrix above and fix the part rather than resetting repeatedly.

Can I run Smart Diagnosis instead of decoding the display?

Yes — most LG fridges from the last decade support Smart Diagnosis through the LG ThinQ app, which reads the fault log directly. It is a good second opinion, but it points to the same fan, sensor and defrost parts in the matrix above.

Are these parts genuine LG parts?

Every listing states exactly what the part is and which models it suits — match your model sticker and you get the correct fit. We have stocked Australian fridge parts since 2009, carry 3,000+ parts across 25+ brands, and dispatch same day from our Sydney warehouse when you order before cut-off.

How do I fix Er FF on an LG fridge?

Unplug the fridge and leave both doors open for 8 to 12 hours so the ice around the freezer fan melts, then plug it back in and listen at the freezer back panel: the fan should start within a minute of the door closing. If Er FF returns within days with the fan clear of ice, the fan motor has failed and needs replacing.

Which part fixes Er FF on an LG fridge?

The freezer (evaporator) fan motor. LG used several variants across the GB, GF, GS, GR and GT families, so match your model sticker: the GR/GN bottom-mount variant, DC12V for GF-L570, GF-LN500, GF-V500, GF-V570 or DC13V 4681JB1027A. All are in stock, ships from Sydney, typically $30–$70.

My LG fridge shows FF without the Er. Is that the same code?

Yes. Some LG displays drop the Er prefix and flash the two letters on their own, so FF and Er FF are the same freezer fan error. Read it the same way and work the same checks.

The fridge section is warm but the freezer is fine. Which code causes that?

Er FF or Er dH. Both stop cold air moving from the freezer evaporator into the fridge compartment: Er FF because the fan is not spinning, Er dH because ice has built up over the evaporator. Defrost the fridge fully, then replace the fan motor if FF returns, or the defrost sensor, thermostat or heater if dH returns.

Read the code, fix the part

LG did owners a favour with these codes: FF, CF, dH and rS are not mysteries, they are part names in shorthand. Match the code in the matrix, confirm your model on the model sticker, and in most cases the fix is a $15.95–$58.95 part with same-day dispatch from our Sydney warehouse — not a service bill and not a new fridge. Code not listed, or not sure which variant fits? Run your model through the part finder or browse the full refrigerator and freezer parts range.

Find your exact LG fridge part

The FF code — LG’s most-searched fridge error

What does the FF code (Er FF) mean on an LG fridge? Er FF is the freezer evaporator fan: the fan is iced up, blocked, or its motor has failed, so cold air stops circulating and the fridge section warms while the freezer still works. Unplug the fridge for 8–12 hours with the doors open to defrost the fan housing. If Er FF returns within days, the evaporator fan motor has failed and needs replacing — on most LG bottom-mounts it sits behind the freezer back panel.

In stock: LG evaporator fan motor (GF-V570 family) · LG evaporator fan motor (GF-L570 family) · LG condenser fan motor EAU65058501. A repeating FF with a clean fan usually means the defrost sensor — ask us with your model number.

Three checks for Er FF, in order:

1. Empty the freezer, unplug the fridge and leave the doors open for 8 to 12 hours with towels down. Ice around the fan housing is the most common cause.
2. Plug it back in, close the freezer door and press the door switch by hand. You should hear the fan start within a minute; silence means it is not being driven or the motor is dead.
3. Watch the display for a few days. Er FF returning with a fan that is clear of ice means the fan motor has failed; Er FF returning with ice building again means the defrost circuit is the real fault.

The part that usually fixes it: The freezer (evaporator) fan motor, matched to your model — the GR/GN bottom-mount variant, DC12V for the GF-L570 and GF-V570 families or DC13V 4681JB1027A — all in stock, ships from Sydney, typically $30–$70.

Parts for this fault

Match your model sticker inside the fridge compartment against the model list in each product title. All in stock, shipped from Sydney.

Fault	Usual part	Link
Er FF — freezer fan	Evaporator (freezer) fan motor	GR/GN bottom-mount variant · DC12V GF-L570 family · DC13V 4681JB1027A — typically $30–$70
Er CF — condenser fan	Condenser fan motor	4680JB1026B · EAU65058326 — typically $40–$55
Er dH — defrost failure	Defrost thermostat, sensor or heater	Termination thermostat 6615JB2002T · Defrost sensor 6615JB2005A · Defrost heater 5300JB1090B — typically $10–$40
Er rS / Er FS / Er HS — sensor codes	Temperature or humidity sensor	Sensor 6500JB2001B — typically $15–$25
Er IF — ice maker fan	Ice compartment fan motor	fridge and freezer fan motors

Not sure which part?

Not sure which part? Send a photo of the model sticker via the contact page and we’ll match it. Quote the full model number and the code on the display and we will point you at the exact part — every part linked above is in stock and ships from Sydney.