--- title: "Appliance Repair Glossary: Terms Explained | Lankon" description: "Plain-English appliance repair glossary: compressor, defrost heater, drain pump, igniter, thermal fuse, service call and more — from a Brooklyn repair pro." url: https://lankonappliance.com/glossary/ canonical_url: https://lankonappliance.com/glossary/ last_updated: 2026-10-30 site: Lankon Appliance phone: "(347) 768-3889" --- # Appliance Repair Glossary The words a repair technician uses, explained in plain English — so you understand what failed, what the quote covers and what to ask before you approve a repair. ## Appliance Repair Terms A–Z ### Service call (diagnostic visit) The visit where the technician comes to your home, tests the appliance and finds the real fault. At Lankon Appliance the service call is $95 and it is waived if you approve the repair. ### Flat-rate quote A single, fixed repair price given after diagnosis and before any work begins, covering parts and labor, so the final bill does not change while the technician works. ### Parts-and-labor warranty A guarantee that covers both the replaced part and the work to install it. Every Lankon Appliance repair carries a 90-day parts-and-labor warranty. ### Same-day service A repair visit on the same day you call. Calls before noon are usually seen the same day; later calls are usually booked for the next morning. ### Compressor The pump that circulates refrigerant through a refrigerator or freezer. A failed compressor usually means the fridge runs but does not get cold, and the repair involves the sealed system. ### Sealed system The closed refrigerant loop of a fridge or freezer: compressor, condenser, evaporator and tubing. Sealed-system repairs need special tools and should only be done by a trained technician. ### Refrigerant The gas-and-liquid working fluid that carries heat out of a refrigerator, freezer or ice maker. Low refrigerant points to a leak in the sealed system. ### Condenser coil The coil, usually under or behind a fridge, that releases heat. A dusty condenser coil makes the fridge run longer and cool poorly; cleaning it is simple maintenance. ### Evaporator coil and fan The cold coil inside the freezer and the fan that blows cold air through the fridge. A frosted coil or a noisy, stopped fan is a common cause of a warm refrigerator. ### Defrost heater A heating element that melts frost off the evaporator coil several times a day. When it fails, ice builds up and airflow to the fridge section stops. ### Defrost timer / control board The part that switches a frost-free refrigerator between cooling and defrost cycles. Newer models use an electronic control board instead of a mechanical timer. ### Thermistor A temperature sensor that reports to the control board. A faulty thermistor can make a fridge too warm or too cold, or trigger an error code. ### Door gasket The rubber seal around a refrigerator, freezer, dishwasher or oven door. A torn or loose gasket lets air or water leak and makes the appliance work harder. ### Water inlet valve An electric valve that lets water into a washer, dishwasher, ice maker or water dispenser. A failed valve causes no water, slow filling or leaks. ### Ice maker module The motor and control assembly that fills, freezes and ejects ice in a refrigerator ice maker. ### Drain pump The pump that removes water from a washing machine or dishwasher. A clogged or failed drain pump leaves water in the tub and can stop the cycle. ### Lid switch / door lock A safety switch that tells a washer the lid or door is closed. If it fails, the washer will not spin or will stop mid-cycle. ### Drive belt The belt that turns the drum in many dryers and some washers. A broken belt means the motor runs but the drum does not turn. ### Thermal fuse A one-time safety fuse in dryers and some ovens that cuts power when the appliance overheats, often because of a blocked vent. ### Dryer vent The duct that carries hot, moist air and lint out of the dryer. A lint-blocked vent causes long drying times and is a fire risk. ### Heating element The electric coil that produces heat in an electric dryer, oven (bake and broil elements) or dishwasher. ### Igniter The part that lights the gas in a gas oven or dryer. A weak igniter glows but does not open the gas valve, so the oven or dryer never heats. ### Spark module The part that makes the clicking spark that lights gas cooktop burners. Constant clicking or no spark usually points to the spark module or a wet burner. ### Control board The electronic circuit board that runs an appliance’s cycles, sensors and display. Many error codes trace back to a sensor or wiring fault rather than the board itself. ### Error code A letter-and-number code shown on the display when an appliance detects a fault. It points the technician to a system to test; it does not always identify the failed part on its own. ### Built-in appliance A refrigerator, oven, range or dishwasher designed to fit flush with cabinetry, such as Sub-Zero, Viking, Wolf, Thermador or Miele. Built-ins need brand-specific experience to repair. --- Call or text (347) 768-3889 · 7:00 AM – 9:00 PM daily · $95 service call, waived with repair · 90-day warranty Read this page on the web: ## Sitemap See the full [sitemap](https://lankonappliance.com/sitemap.md) for all pages on lankonappliance.com.