--- title: "Miele Professional F78: the dish machine's circulation pump has a problem" description: "What F78 means on Miele Professional F78: the dish machine's circulation pump has a problems, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/miele-professional-f78/" --- # Miele Professional F78: the dish machine's circulation pump has a problem The circulation pump pushes wash water through the spray arms in every cycle. ## What F78 actually means. The circulation pump pushes wash water through the spray arms in every cycle. When the control sees the pump not behaving as expected, it stops the program, sounds the alarm and shows F78. A single restart is allowed; a repeat means a technical problem. Miele Professional commercial appliance display What to do when F78 shows on the commercial appliance ### Kind of code Motors and drives Something that should turn is not turning, or not at the speed the controller expects. A washer-extractor's drive or its inverter may stop the spin when the load is out of balance or a bearing drags, a tumbler's belt may slip so the drum barely moves, a convection or combi fan may slow on worn bearings and bake unevenly, and a dish machine's wash pump may hum without spraying. Redistributing a load, confirming the door is latched and running the machine's own test cycle are fair; a drum, a belt or a motor is a visit, and nobody reaches into a drum that could still move. ### Usually leads to Commercial laundry machine repair Coin, card and on-premise laundry machines and tumblers: door locks, bearings, inverters, burners and payment hardware. ### Shows up as Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display A commercial appliance error code appears as letters or numbers on a combi, fryer, reach-in controller, dish machine or laundry machine display, or as a flashing light or an alarm tone. ### Make Miele Professional Miele Professional machines in a small business laundry are usually visited at the start of the day, before the first full load. ### Source Miele Professional PFD 101 U / PFD 102i commercial dish machine operating instructions, en-US (media.miele.com) Miele Professional PFD 101 U built-under and PFD 102 i integrated commercial dish machines (en-US operating instructions); the PFD 401 U and PFD 404 U fresh-water machines are sold alongside them. ## Before you book, in this order. Each step comes from Miele Professional's own guidance for F78 on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Turn the machine off, then on again, and restart the program you need, as Miele allows once. 02 Before restarting, check the filter combination in the wash cabinet is clean and seated, since a clogged filter starves the pump. 03 If F78 comes back, turn the machine off, close the water faucet and book a visit. ### Still there? It usually turns into [commercial laundry machine repair](https://commercialappliancerepair.center/services/commercial-laundry-machine-repair/). Book with the code and the model number. ### What not to do F78 is about the wash pump, not the drain pump; a water-drainage problem shows the word Drain instead. It is also not a heating reading, so dishes coming out cool without F78 need a different check. ## What you may notice with it. The commercial appliance problems F78 tends to arrive with. Answer these at the commercial appliance before anyone is booked. [All problems](https://commercialappliancerepair.center/problems/) Before you call ### [Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display](https://commercialappliancerepair.center/problems/commercial-error-code/) [All 8 causes, cheapest first](https://commercialappliancerepair.center/problems/commercial-error-code/) It also comes with - [**Dish Machine Not Reaching Temperature on the Wash or Final Rinse**](https://commercialappliancerepair.center/problems/dish-machine-not-reaching-temperature/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where F78 usually leads ## Commercial laundry machine repair. **Laundry machine door lock, belt, bearings and seal, drain valve, inverter or motor; tumbler igniter, flame sensor, gas valve coil or airflow switch · moderate.** Book a visit [What the job involves](https://commercialappliancerepair.center/services/commercial-laundry-machine-repair/) ## Miele Professional commercial appliances. Miele Professional machines in a small business laundry are usually visited at the start of the day, before the first full load. [Miele Professional commercial appliance repair](https://commercialappliancerepair.center/brands/miele-professional/) More Miele Professional codes [F33](https://commercialappliancerepair.center/error-codes/miele-professional-f33/) [F18](https://commercialappliancerepair.center/error-codes/miele-professional-f18/) [Waterproof](https://commercialappliancerepair.center/error-codes/miele-professional-waterproof/) [Intake](https://commercialappliancerepair.center/error-codes/miele-professional-intake/) [Drain](https://commercialappliancerepair.center/error-codes/miele-professional-drain/) [Drainage fault](https://commercialappliancerepair.center/error-codes/miele-professional-pwm-drain-filter-message/) [Water intake fault](https://commercialappliancerepair.center/error-codes/miele-professional-pwm-water-intake-message/) [Waterproof system activated](https://commercialappliancerepair.center/error-codes/miele-professional-pwm-waterproof-system-activated/) [Disinfection temperature not reached](https://commercialappliancerepair.center/error-codes/miele-professional-pwm-disinfection-temperature-not-reached/) [Door will not lock](https://commercialappliancerepair.center/error-codes/miele-professional-pwm-door-will-not-lock/) [Cooling down](https://commercialappliancerepair.center/error-codes/miele-professional-pwm-cooling-down/) [Align the machine](https://commercialappliancerepair.center/error-codes/miele-professional-pwm-align-the-machine/) [All 15 Miele Professional codes](https://commercialappliancerepair.center/error-codes/#codes-miele-professional) Motors and drives on other makes [Alto-Shaam E03](https://commercialappliancerepair.center/error-codes/alto-shaam-e03/) [Blodgett Fan Error](https://commercialappliancerepair.center/error-codes/blodgett-fan-error/) [Dexter F9](https://commercialappliancerepair.center/error-codes/dexter-f9/) [Frymaster E25](https://commercialappliancerepair.center/error-codes/frymaster-e25/) [Garland E03](https://commercialappliancerepair.center/error-codes/garland-e03/) [Hatco Fan Is Stopped](https://commercialappliancerepair.center/error-codes/hatco-fan-is-stopped/) [Middleby Marshall MC1_COMM_LOST](https://commercialappliancerepair.center/error-codes/middleby-marshall-mc1-comm-lost/) [Rational Service 47.1](https://commercialappliancerepair.center/error-codes/rational-service-47-1/) [All 25 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-motor) Miele Professional builds this ### Commercial dish machines Undercounter, door-type and conveyor dish machines with their booster heaters and chemical feeds, the warewashing station that washes and sanitizes every rack before it goes back on the line. Miele Professional builds this ### Commercial laundry equipment Coin, card and app-paid front-load machines, washer-extractors, stacked units and tumble dryers in laundromats, multi-housing laundry rooms, hotels, gyms and on-premise laundries. ## In Miele Professional's own words > Circulation-pump fault. [Miele Professional PFD 101 U / PFD 102i commercial dish machine operating instructions, en-US (media.miele.com)](https://media.miele.com/downloads/87/fc/01_C7F128282F3C1EEF9CB9FAB03BEC87FC.pdf) [Miele Professional PFD 101 U / PFD 102i commercial dish machine operating instructions, en-US (media.miele.com)](https://media.miele.com/downloads/87/fc/01_C7F128282F3C1EEF9CB9FAB03BEC87FC.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Miele Professional PFD 101 U built-under and PFD 102 i integrated commercial dish machines (en-US operating instructions); the PFD 401 U and PFD 404 U fresh-water machines are sold alongside them. ## Miele Professional F78 commercial appliance 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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Turn the machine off, then on again, and restart the program you need, as Miele allows once. If it comes back, it needs a visit. ### Can a glass shard cause F78 on a Miele Professional dish machine? Debris in the filter area can hamper the circulation pump. Clean the filter combination as the manual shows before restarting, and book a visit if F78 returns. ### How many times should we restart after F78? Once. Miele treats a second F78 as a technical problem, so close the faucet and wait for a technician. ### Does F78 mean dishes from the last cycle are unsafe? The cycle stopped partway, so treat that load as not washed and run it again once the machine is fixed or on another machine. --- **[Read on the site: Miele Professional F78: the dish machine's circulation pump has a problem](https://commercialappliancerepair.center/error-codes/miele-professional-f78/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**