--- title: "Samsung dryer showing C90 | DryerRepair.center" description: "What C90 means on Samsung dryers, what to check before booking, and when it is not a failure at all." url: "https://dryerrepair.center/error-codes/samsung-c90/" --- # Samsung dryer showing C90 C90 is a result of Samsung's vent blockage test: more than 90 percent of the vent is clogged. ## What C90 actually means. C90 is a result of Samsung's vent blockage test: more than 90 percent of the vent is clogged. C80 marks about 80 percent, and CLg or Cg a clogged vent. Samsung dryer display · also shown as C9, C9o, C80, C8, C8o, CLg, Cl9, Cg What to do when C90 shows on the dryer ### Kind of code Restricted airflow Air is not leaving the dryer fast enough. Lint in the duct, a crushed hose behind the machine or a stuck flap on the outside hood is found long before any part fails. ### Usually leads to Vent cleaning and inspection The visit that prevents most dryer fires and many of the repairs above it: the duct, the hood and the lint inside the cabinet. ### Shows up as Dryer Vent Clogged Weak airflow outside, long drying times and a hot laundry room: the vent is not carrying the air away. ### Make Samsung Full-size and stacked dryers in electric and gas versions, built around electronic controls and sensor drying. ### Source Samsung US support: Samsung dryer displays an error code Samsung dryers with the vent blockage test function. ## Before you book, in this order. Each step comes from Samsung's own guidance for C90 on its dryers. Follow it to the end: the last card says whether this is a visit. 01 Empty and clean the lint filter first. 02 Clean the exhaust vent, then run the vent blockage test again. 03 Repeat until the test passes, and book a vent cleaning if you cannot reach the clog. ### Still there? It usually turns into [vent cleaning and inspection](https://dryerrepair.center/services/dryer-vent-cleaning-and-inspection/). Book with the code and the model number. ### What not to do These codes appear only after the vent test has been run; they are not a random failure during a normal load. ## What you may notice with it. The dryer problems C90 tends to arrive with. Answer these at the dryer before anyone is booked. [All problems](https://dryerrepair.center/problems/) Before you call ### [Dryer Vent Clogged](https://dryerrepair.center/problems/dryer-vent-clogged/) [All 5 causes, cheapest first](https://dryerrepair.center/problems/dryer-vent-clogged/) It also comes with - [**Dryer Takes Too Long to Dry**](https://dryerrepair.center/problems/dryer-takes-too-long/) Problem ### Dryer Vent Clogged 5 causes, cheapest first Where C90 usually leads ## Vent cleaning and inspection. **Vent cleaning and inspection · lowest.** Book a visit [What the job involves](https://dryerrepair.center/services/dryer-vent-cleaning-and-inspection/) ## Samsung dryers. Full-size and stacked dryers in electric and gas versions, built around electronic controls and sensor drying. [Samsung dryer repair](https://dryerrepair.center/brands/samsung/) More Samsung codes [HC](https://dryerrepair.center/error-codes/samsung-hc/) [HC2](https://dryerrepair.center/error-codes/samsung-hc2/) [tC](https://dryerrepair.center/error-codes/samsung-tc/) [dC](https://dryerrepair.center/error-codes/samsung-dc/) [AC](https://dryerrepair.center/error-codes/samsung-ac/) [3C](https://dryerrepair.center/error-codes/samsung-3c/) [dn](https://dryerrepair.center/error-codes/samsung-dn/) Restricted airflow on other makes [ASKO E4](https://dryerrepair.center/error-codes/asko-e4/) [Bosch CArE](https://dryerrepair.center/error-codes/bosch-care/) [Electrolux EF1](https://dryerrepair.center/error-codes/electrolux-ef1/) [GE Profile Vent Blocked](https://dryerrepair.center/error-codes/ge-profile-vent-blocked/) [GE Check Vent](https://dryerrepair.center/error-codes/ge-check-vent/) [Kenmore E8C](https://dryerrepair.center/error-codes/kenmore-417-e8c/) [LG SIGNATURE d95](https://dryerrepair.center/error-codes/lg-signature-d95/) [LG d80](https://dryerrepair.center/error-codes/lg-d80/) [All 13 codes of this kind](https://dryerrepair.center/error-codes/#family-vent) Samsung builds this ### Electric dryer The most common dryer in US homes: a 240-volt heating coil, a belt-driven drum and a vent to the outside. Samsung builds this ### Gas dryer Heat from a burner on natural gas or propane, lit by an igniter and watched over by a flame sensor, with the motor on 120 volts. Samsung builds this ### Stackable dryer The dryer half of a stacked pair or a single-frame laundry center, where the height and the closet decide how the repair is done. ## In Samsung's own words > These codes will only appear after a Vent Blockage test has been run. [Samsung US support: Samsung dryer displays an error code](https://www.samsung.com/us/support/troubleshoot/TSG10001006/) [Samsung US support: Samsung dryer displays an error code](https://www.samsung.com/us/support/troubleshoot/TSG10001006/) [Samsung US support: clothes are not dry after using Samsung dryer (vent blockage test)](https://www.samsung.com/us/support/troubleshoot/TSG10001001/) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Samsung dryers with the vent blockage test function. ## Samsung C90 dryer 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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Empty and clean the lint filter first. If it comes back, it needs a visit. ### What result should a clean Samsung vent give instead of C90? A clean duct returns 0 or End at the end of the test. Anything in the C group means the exhaust still needs work. ### If the Samsung vent test shows Ct instead of C90, what does that mean? Ct means the dryer was below freezing or above 104 degrees Fahrenheit, outside the range the test accepts. Leave it at room temperature for an hour and try again. --- **[Read on the site: Samsung dryer showing C90 | DryerRepair.center](https://dryerrepair.center/error-codes/samsung-c90/)** **[Book a visit with DryerRepair.center](https://dryerrepair.center/schedule/)**