--- title: "LG refrigerator showing dH | RefrigeratorRepair.center" description: "What dH 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-dh/" --- # LG refrigerator showing dH A defrost cycle did not finish in time: the coil did not warm to its target within the period the board allows. ## What dH actually means. A defrost cycle did not finish in time: the coil did not warm to its target within the period the board allows. LG lists the usual causes as ice that has built up, a blocked drain, an open thermal fuse, a failed heater or a failed main board. F dH points at the freezer, r dH at the fresh-food section. LG refrigerator display · also shown as F dH, r dH, ER dH What to do when dH shows on the refrigerator ### Kind of code Defrost The defrost cycle did not finish in the time the board allows. A heater, its thermostat or the sensor that ends the cycle. ### Usually leads to Defrost system repair The failure behind most slow, gradual losses of cooling — and behind most visible frost. ### Shows up as Frost Building Up in the Refrigerator Ice on the back wall, around the door, or over the whole freezer — and each location means something different. ### Make LG French door refrigeration with linear compressors and heavily instrumented controls. ### Source LG US support: F dH or r dH error code LG shows it three ways depending on the model: F dH, r dH or plain dH, sometimes with an Er or E in front. ## Before you book, in this order. Each step comes from LG's own guidance for dH on its refrigerators. Follow it to the end: the last card says whether this is a visit. 01 Unplug the unit and leave the doors open so the ice can melt and the drain can clear — LG suggests about a day in summer and up to three in winter. 02 Move food that matters somewhere cold while it defrosts. 03 If the code comes back once it is running again, book a visit: the cycle itself is failing. ### Still there? It usually turns into [defrost system repair](https://refrigeratorrepair.center/services/defrost-system-repair/). Book with the code and the model number. ### What not to do Do not read dH as a normal defrost message. On LG it is a failure code — the cycle did not complete — and it needs an inspection if it returns. ## What you may notice with it. The refrigerator problems dH tends to arrive with. Answer these at the refrigerator before anyone is booked. [All problems](https://refrigeratorrepair.center/problems/) Before you call ### [Frost Building Up in the Refrigerator](https://refrigeratorrepair.center/problems/frost-buildup/) [All 4 causes, cheapest first](https://refrigeratorrepair.center/problems/frost-buildup/) It also comes with - [**Fresh Food Section Warm, Freezer Cold**](https://refrigeratorrepair.center/problems/fresh-food-warm-freezer-cold/) Problem ### Frost Building Up in the Refrigerator 4 causes, cheapest first Where dH usually leads ## Defrost system repair. **Defrost heater, thermostat or sensor · low.** Book a visit [What the job involves](https://refrigeratorrepair.center/services/defrost-system-repair/) ## Read these before the visit. Short guides that make the call quicker and the diagnosis cheaper. [All guides](https://refrigeratorrepair.center/guides/) How not to need us ### Keeping the defrost drain clear before it floods Why it is doing that ### Why refrigerators stop cooling, in order of likelihood 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 [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/) [C1](https://refrigeratorrepair.center/error-codes/lg-c1/) [All 14 LG codes](https://refrigeratorrepair.center/error-codes/#codes-lg) Defrost on other makes [GE dE](https://refrigeratorrepair.center/error-codes/ge-de/) [Sub-Zero 20 2 00](https://refrigeratorrepair.center/error-codes/sub-zero-20-2-00/) [Café dE](https://refrigeratorrepair.center/error-codes/cafe-de/) [Monogram dE](https://refrigeratorrepair.center/error-codes/monogram-de/) [Kenmore F dH](https://refrigeratorrepair.center/error-codes/kenmore-dh/) [GE Profile dE](https://refrigeratorrepair.center/error-codes/ge-profile-de/) [All 11 codes of this kind](https://refrigeratorrepair.center/error-codes/#family-defrost) 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 > An [F(r) dH] appearing on the LED lamp display is a defrosting (frost removal) failure error code that requires a product inspection. [LG US support: F dH or r dH error code](https://www.lg.com/us/support/help-library/lg-refrigerator-troubleshooting-an-f-dh-or-r-dh-error-code--20153150967208) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. LG shows it three ways depending on the model: F dH, r dH or plain dH, sometimes with an Er or E in front. ## LG dH 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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Unplug the unit and leave the doors open so the ice can melt and the drain can clear — LG suggests about a day in summer and up to three in winter. If it comes back, it needs a visit. ### Is dH on my LG refrigerator just a normal defrost notice? No, LG uses dH to report that a defrost cycle ran out of time before the coil warmed up. It is a request for inspection, especially if it reappears after the unit has been running again. ### Why does LG say a dH defrost takes longer in winter? LG allows roughly a day in summer and up to three in winter for the ice to melt and the drain to clear with the doors open. A cold room simply melts the buildup more slowly, so keep valuable food somewhere cold meanwhile. --- **[Read on the site: LG refrigerator showing dH | RefrigeratorRepair.center](https://refrigeratorrepair.center/error-codes/lg-dh/)** **[Book a visit with RefrigeratorRepair.center](https://refrigeratorrepair.center/schedule/)**