LG Refrigerator Error Codes · Reference Guide · Same Day Southern California
LG Refrigerator Error Codes, Explained
What FF, dH, CO, and the rest actually mean — which you can clear yourself, which need a tech, and why CL isn't an error at all.
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01 · Start here
First: if you see CL, that's not an error.
The most common "code" LG owners panic over is CL — and it isn't a fault. CL is the Child Lock indicator: the panel is locked, usually by accident. Hold the Lock button for 3 to 5 seconds and it clears. The real error codes on LG refrigerators are two letters (sometimes shown with an Er, ER, or E prefix that doesn't change the meaning). The most common are FF and rF (fan faults), dH (defrost), CO (communication), and the sensor codes FS, rS, and dS. Many fan and communication codes clear with a power cycle or a defrost; sensor codes and any code that keeps coming back need a tech. $89 residential diagnostic, waived with repair.
One important distinction up front: plain CL is the child lock, but CL-E and CH-E are different and serious — they point to a refrigerant (sealed-system) problem and are not something to clear yourself. If it's just CL with a locked panel, press the lock button. If it's CL-E or CH-E, that's a diagnostic.
02 · Fan and defrost codes
The cooling and airflow faults.
FF — freezer evaporator fan
The freezer fan isn't running normally. Often the motor failed, or frost has locked the blade. Try a 5-minute power cycle; if frost-locked, a full defrost clears it. Returns after that = tech.
rF — refrigerator (fresh-food) fan
The fridge-side fan motor isn't running properly. Power-cycle first; a persistent rF means the fan motor needs replacing.
IF / 1F — ice-maker fan
The ice-maker fan has failed or iced up. Empty the ice bin and let the compartment defrost; if it returns, the fan or a sensor is the cause.
CF — condenser fan
The condenser fan (which sheds the compressor's heat, usually at the rear or bottom) isn't giving a feedback signal. It's behind a panel — a tech job.
dH — defrost fault
The defrost cycle ran too long without finishing, pointing to a failed defrost heater, sensor, or thermal fuse. One power cycle is worth a try; a returning dH is a diagnostic.
03 · Sensor, communication, and water codes
The rest of the common ones.
FS, rS, dS — temperature and defrost sensors
FS is the freezer temperature sensor, rS the fridge temperature sensor, and dS the defrost sensor, each signaling a short or disconnection. These are failed-part codes with no homeowner fix — they need a tech to test and replace the thermistor.
CO — communication error
The main control board and the display board have lost communication, often from a power blip or a loose harness. Unplug the fridge for 60 seconds and restore power. If CO persists, it's wiring or a board.
gF — water flow sensor
The fridge isn't sensing enough water flow to the dispenser or ice maker. Check that the water supply valve is fully open and the line isn't kinked. If the supply is fine, the flow sensor is the fault.
It — ice-maker fault · HS — humidity sensor
It points to the ice-maker motor or assembly; HS is a humidity-sensor fault (rare). Both are part-level and are tech replacements.
CL — child lock (not an error) · CL-E / CH-E — refrigerant
Plain CL is the child lock — hold the Lock button to clear. CL-E and CH-E are separate, serious sealed-system (refrigerant) codes and need a tech; do not treat them as a lock issue.
04 · What you can safely try
Before you call, run these.
- Check for child lock first. If the panel shows CL and won't respond, hold the Lock button 3–5 seconds.
- Power cycle. Unplug the fridge for 60 seconds (5 minutes for fan codes) and restart. This clears CO and transient glitches.
- Full defrost for frost-locked fan codes. For FF, IF, or 1F, unplug the unit and let it thaw fully with doors open — about a day — to melt frost off the fan.
- Check the water supply for gF. Confirm the supply valve is open and the line isn't kinked.
- Note whether the code returns. A code that clears and stays gone was a glitch. A code that comes back is a failed part.
Where to stop: child-lock release, power cycling, defrost thawing, and checking the water supply are safe. Do not open the sealed refrigeration system (any CL-E/CH-E refrigerant code), test the sensors or boards, or pull the rear evaporator panel yourself. Sensor and sealed-system codes are tech work.
05 · When it's a tech job
A code that keeps returning means a failed part.
When a power cycle and a defrost don't hold — or the code is a sensor (FS, rS, dS, HS), a condenser fan (CF), an ice-maker fault (It), or a refrigerant code (CL-E/CH-E) — the part has to be tested and replaced. Our techs carry the common LG fan motors, defrost components, and thermistors, so most LG code calls are a one-visit fix. We verify the simple causes first (frost, a loose harness, a closed water valve) before quoting a part.
More help: the full refrigerator repair hub, and if the fridge simply isn't cooling, refrigerator not cooling. Samsung owners: see our Samsung refrigerator error codes guide. Brand coverage on LG refrigerator repair and the LG appliance repair pillar. Same-day across Los Angeles, Beverly Hills, and Pasadena in most cases. $89 residential diagnostic, waived with repair. Book online or call (424) 325-0520.
06 · FAQ
LG refrigerator codes: common questions.
What does CL mean on an LG refrigerator?
On its own, CL is not an error — it's the Child Lock indicator. The control panel is locked so buttons don't respond, usually switched on by accident. Hold the Lock button (often labeled on the dispenser panel) for about 3 to 5 seconds to turn it off. Don't confuse plain CL with CL-E or CH-E, which are different and serious: those indicate a refrigerant (sealed-system) issue on the low or high side and need a tech. If your panel just won't respond and shows CL, try the lock button before you worry.
What is the FF code on an LG refrigerator?
FF (shown as FF, Er FF, or E FF depending on the model) is a freezer evaporator fan fault. Either the fan motor has failed or — very commonly — frost has built up and locked the fan blade. The first thing to try is a power cycle: unplug the fridge for five minutes and restart. If the fan is frost-locked, unplugging the unit and letting the freezer thaw fully with the doors open (about a day) clears it. If FF returns after that, the fan motor or the defrost system is the real cause and needs a tech.
Does the Er or E prefix on LG codes mean anything different?
No. LG displays the same code as FF, Er FF, ER FF, or E FF across different model generations — the prefix is cosmetic. What matters is the two-letter code itself. So Er dH and dH are the same defrost fault, and Er CO and CO are the same communication error. Read the two letters and ignore whether an E or Er sits in front.
Which LG error codes can I fix myself?
The ones tied to a power glitch, frost, water supply, or the child lock. CO (communication) often clears with a 60-second unplug. FF, IF, and 1F (fan codes) frequently clear after a full defrost if frost was locking the blade. gF (water flow) is worth checking your water supply valve and line for. CL is just the child lock. The codes you should not try to clear yourself are the sensor faults — FS, rS, dS, HS — and any code that keeps returning after a reset, because those mean a failed part that needs testing and replacement.
My LG fridge shows dH — is that serious?
dH means the defrost cycle ran too long without completing, which points to a failed defrost heater, defrost sensor, or thermal fuse. It's not an emergency, but it won't fix itself: without a working defrost, frost builds on the coil until cooling drops off. A single power cycle is worth trying, but if dH comes back, it's a diagnostic. Our techs test the defrost heater, sensor, and fuse and replace the failed one. $89 residential diagnostic, waived with the repair.
LG code back after a reset? Call today.
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