--- title: "Thermador E18: fill level in a dish care machine" description: "What E18 means on Thermador E18: fill level in a dish care machines, what to check before booking, and when it is not a failure at all." url: "https://applianceinstallation.center/error-codes/thermador-e18/" --- # Thermador E18: fill level in a dish care machine Thermador documents this as a separate condition from a total no-fill: water is arriving, but the level is too low, or is not being pumped correctly. ## What E18 actually means. Thermador documents this as a separate condition from a total no-fill: water is arriving, but the level is too low, or is not being pumped correctly. Thermador's own fix again begins with the inlet hose and the water supply being fully on, which places this squarely with the hookup rather than a failed sensor. Thermador appliance display What to do when E18 shows on the appliance ### Kind of code Water supply and drain The new appliance is reporting what it gets from the water connections behind it. A no-water or slow-fill message on the first fill usually means the supply valve is still closed or only half open, or the new line kinked when the unit slid back; a drain message means the drain hose is pinched, pushed too deep into the standpipe, or looped higher or lower than the installation instructions allow. Open the valve fully, straighten the hose, set it to the height the manual gives, and run the cycle again. ### Usually leads to Water supply and shutoff connection New supply lines from a working quarter-turn stop to each water appliance, tested under pressure. ### Shows up as Water Hammer After a Hookup: Banging Pipes When a Valve Shuts Water hammer after a hookup is a bang, knock or shudder in the pipes each time a newly connected appliance closes its water valve. ### Make Thermador Thermador installs include pro ranges and rangetops with their hoods, wall ovens and steam ovens, integrated column refrigeration and dishwashers. ### Source Thermador US error codes — dishwashers Confirmed on Thermador's current US error-code page for dish care machines. ## Before you book, in this order. Each step comes from Thermador's own guidance for E18 on its appliances. Follow it to the end: the last card says whether this is a visit. 01 Check the inlet hose for a kink or visible damage along its full length. 02 Confirm the water supply is turned fully on, not just cracked open. 03 Run a short cycle and listen for water entering steadily rather than in short bursts. 04 If the fill still falls short with a clear hose and open supply, book a visit. ### Still there? It usually turns into [water supply and shutoff connection](https://applianceinstallation.center/services/water-supply-and-shutoff-connection/). Book with the code and the model number. ### What not to do This alert is not automatically the same problem as a total loss of water flow, and Thermador's own guidance treats it as a related but distinct condition with the same hookup-first fix. ## What you may notice with it. The appliance problems E18 tends to arrive with. Answer these at the appliance before anyone is booked. [All problems](https://applianceinstallation.center/problems/) Before you call ### [Water Hammer After a Hookup: Banging Pipes When a Valve Shuts](https://applianceinstallation.center/problems/water-hammer-after-hookup/) [All 6 causes, cheapest first](https://applianceinstallation.center/problems/water-hammer-after-hookup/) It also comes with - [**Appliance Installation Code on a New Unit: Setup Modes and Hookup Messages**](https://applianceinstallation.center/problems/appliance-installation-code/) Problem ### Water Hammer After a Hookup: Banging Pipes When a Valve Shuts 6 causes, cheapest first Where E18 usually leads ## Water supply and shutoff connection. **New supply line and quarter-turn stop for a refrigerator, ice maker, dish care machine or laundry pair, flushed and tested under pressure · low.** Book a visit [What the job involves](https://applianceinstallation.center/services/water-supply-and-shutoff-connection/) ## Thermador appliances. Thermador installs include pro ranges and rangetops with their hoods, wall ovens and steam ovens, integrated column refrigeration and dishwashers. [Thermador appliance installation](https://applianceinstallation.center/brands/thermador/) More Thermador codes [dE](https://applianceinstallation.center/error-codes/thermador-de/) [E16](https://applianceinstallation.center/error-codes/thermador-e16/) Water supply and drain on other makes [ASKO F12](https://applianceinstallation.center/error-codes/asko-f12/) [Bosch E17](https://applianceinstallation.center/error-codes/bosch-e17/) [Cove Error 800115](https://applianceinstallation.center/error-codes/cove-error-800115/) [Dacor 4C](https://applianceinstallation.center/error-codes/dacor-4c/) [DCS Blank display / OFF after power interruption](https://applianceinstallation.center/error-codes/dcs-drain-restriction-power-cutoff/) [Electrolux HO SE](https://applianceinstallation.center/error-codes/electrolux-ho-se-reversed-hoses/) [Fisher & Paykel Water is not getting to the machine](https://applianceinstallation.center/error-codes/fisher-and-paykel-water-not-getting-to-the-machine/) [Frigidaire E1](https://applianceinstallation.center/error-codes/frigidaire-e1/) [All 38 codes of this kind](https://applianceinstallation.center/error-codes/#family-water) Thermador builds this ### Cold storage Setting a new refrigerator, freezer, wine or beverage unit or ice maker into its opening: measured, connected to water, leveled and started. Thermador builds this ### Cooking appliances Hooking up ranges, cooktops, wall ovens, microwaves and hoods: gas connectors leak-tested, anti-tip brackets fastened, ducts sized and the first light checked. Thermador builds this ### Dish care Fitting a new dishwasher or dish drawer under the counter: supply line, drain loop or air gap, power, mounting brackets and a first test cycle. ## In Thermador's own words > E18 - The water level is too low, or water is not being pumped correctly. [Thermador US error codes — dishwashers](https://www.thermador.com/us/support/dishwashers/error-codes) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Confirmed on Thermador's current US error-code page for dish care machines. ## Thermador E18 appliance installation, 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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Check the inlet hose for a kink or visible damage along its full length. If it comes back, it needs a visit. ### The dish care machine takes in some water but E18 still appears. What's different about this alert? Thermador documents E18 as the fill level staying too low even though water is arriving, which points at a restriction or a low-pressure supply rather than a completely blocked line. ### Could low household water pressure really be the cause here? Yes — Thermador's own fix for this alert starts with confirming the supply is fully open, which is the practical way of ruling pressure in or out before assuming a part has failed. ### If the hose and supply both check out, what happens next? At that point Thermador's own guidance moves past the hookup and into a visit, since the documented installation causes have been ruled out. --- **[Read on the site: Thermador E18: fill level in a dish care machine](https://applianceinstallation.center/error-codes/thermador-e18/)** **[Book a visit with ApplianceInstallation.center](https://applianceinstallation.center/schedule/)**