--- title: "LG refrigerator showing C1 | RefrigeratorRepair.center" description: "What C1 means on LG refrigerators, what to check before booking, and when it is not a failure at all." url: "https://refrigeratorrepair.center/error-codes/lg-c1/" --- # LG refrigerator showing C1 C1 means the LCD display and the dispenser have stopped exchanging information. ## What C1 actually means. C1 means the LCD display and the dispenser have stopped exchanging information. It is a communication problem between parts, not a temperature reading. LG lists no owner steps for it. LG refrigerator display · also shown as c1 What to do when C1 shows on the refrigerator ### Kind of code Communication Two boards that stopped hearing each other — the main control and the display, or the inverter. A harness is checked before a board. ### Usually leads to Controls and sensors A refrigerator cools to what it believes the temperature is, and a sensor reading wrong is obeyed perfectly. ### Shows up as Refrigerator Control Panel Not Responding Buttons do nothing, the display is blank or frozen, or settings will not hold. ### Make LG French door refrigeration with linear compressors and heavily instrumented controls. ### Source LG US support: refrigerator error code list (Wayback copy, Feb 2024) Models with an LCD display and a door dispenser. ## Before you book, in this order. Each step comes from LG's own guidance for C1 on its refrigerators. Follow it to the end: the last card says whether this is a visit. 01 Note the code and whether the dispenser still responds. 02 Record any recent power cut or surge. 03 Book a repair visit. ### Still there? It usually turns into [controls and sensors](https://refrigeratorrepair.center/services/controls-and-sensors/). Book with the code and the model number. ### What not to do It is not CO. CO is the link between the main control board and the display; C1 is the link between the display and the dispenser. Wiring between the two is checked before a board is replaced. ## What you may notice with it. The refrigerator problem C1 tends to arrive with. Answer these at the refrigerator before anyone is booked. [All problems](https://refrigeratorrepair.center/problems/) Before you call ### [Refrigerator Control Panel Not Responding](https://refrigeratorrepair.center/problems/control-panel-not-responding/) [All 5 causes, cheapest first](https://refrigeratorrepair.center/problems/control-panel-not-responding/) Problem ### Refrigerator Control Panel Not Responding 5 causes, cheapest first Where C1 usually leads ## Controls and sensors. **Control board · moderate.** Book a visit [What the job involves](https://refrigeratorrepair.center/services/controls-and-sensors/) ## Read these before the visit. Short guides that make the call quicker and the diagnosis cheaper. [All guides](https://refrigeratorrepair.center/guides/) What you can check yourself ### Five observations that narrow a refrigerator problem down before anyone visits What you can check yourself ### Where the model number hides, and why nothing works without it Error codes ### All 247 codes, by make ## LG refrigerators. French door refrigeration with linear compressors and heavily instrumented controls. [LG refrigerator repair](https://refrigeratorrepair.center/brands/lg/) More LG codes [dH](https://refrigeratorrepair.center/error-codes/lg-dh/) [ER IF](https://refrigeratorrepair.center/error-codes/lg-er-if/) [ER FF](https://refrigeratorrepair.center/error-codes/lg-er-ff/) [ER rF](https://refrigeratorrepair.center/error-codes/lg-er-rf/) [ER CO](https://refrigeratorrepair.center/error-codes/lg-er-co/) [OF F](https://refrigeratorrepair.center/error-codes/lg-of-f/) [ER rS](https://refrigeratorrepair.center/error-codes/lg-er-rs/) [CF](https://refrigeratorrepair.center/error-codes/lg-cf/) [FS](https://refrigeratorrepair.center/error-codes/lg-fs/) [dS](https://refrigeratorrepair.center/error-codes/lg-ds/) [rT](https://refrigeratorrepair.center/error-codes/lg-rt/) [Sb](https://refrigeratorrepair.center/error-codes/lg-sb/) [All 14 LG codes](https://refrigeratorrepair.center/error-codes/#codes-lg) Communication on other makes [Samsung PC ER](https://refrigeratorrepair.center/error-codes/samsung-pc-er/) [Frigidaire SY CE](https://refrigeratorrepair.center/error-codes/frigidaire-sy-ce/) [Electrolux SY CE](https://refrigeratorrepair.center/error-codes/electrolux-sy-ce/) [Bosch E02](https://refrigeratorrepair.center/error-codes/bosch-e02/) [U-Line No Comm](https://refrigeratorrepair.center/error-codes/u-line-no-comm/) [True Residential Communication Error](https://refrigeratorrepair.center/error-codes/true-communication-error/) [Bertazzoni E6](https://refrigeratorrepair.center/error-codes/bertazzoni-e6/) [ASKO E0](https://refrigeratorrepair.center/error-codes/asko-e0-r31442i/) [All 18 codes of this kind](https://refrigeratorrepair.center/error-codes/#family-communication) LG builds this ### French door refrigerator Two fresh-food doors over a freezer drawer — the most common premium layout, and the one with the most to go wrong at the door line. LG builds this ### Side-by-side refrigerator Full-height freezer beside full-height fresh food, with the ice maker and dispenser built into the freezer door. ## In LG's own words > A C1 error code indicates a communication error between the LCD display and the dispenser. [LG US support: refrigerator error code list (Wayback copy, Feb 2024)](https://web.archive.org/web/20240224143857/https://www.lg.com/us/support/help-library/lg-refrigerator-error-code-list--1441392048805) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Models with an LCD display and a door dispenser. ## LG C1 refrigerator repair, where we come out. The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered. 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Note the code and whether the dispenser still responds. If it comes back, it needs a visit. ### Does C1 on my LG affect cooling? C1 is a communication issue between the LCD display and the dispenser, not a temperature reading. Note whether the dispenser still responds when you book the visit. ### How is LG C1 different from CO? CO is the link between the main control board and the display, while C1 is the link between the display and the dispenser. The wiring between those two parts is checked before any board is changed. --- **[Read on the site: LG refrigerator showing C1 | RefrigeratorRepair.center](https://refrigeratorrepair.center/error-codes/lg-c1/)** **[Book a visit with RefrigeratorRepair.center](https://refrigeratorrepair.center/schedule/)**