

Miele Professional F18: a technical problem in the dish machine's water intake
Miele lists F18 under water intake problems but separates it from the simple Intake message: F18 is a technical problem rather than a closed faucet or a dirty inlet filter, so there is no owner fix.
Mon–Sat, 8am–8pm
- Water, fill and drain
- Dish machine repair
- Source: Miele Professional
Book a visit
Three short steps, about a minute.
or call (844) 571-4566
Loading appointment form…
The appointment form couldn’t load. Please try again.
What F18
actually means.
Miele lists F18 under water intake problems but separates it from the simple Intake message: F18 is a technical problem rather than a closed faucet or a dirty inlet filter, so there is no owner fix.
Miele Professional commercial appliance display
What to do when F18 shows on the commercial applianceKind of codeWater, fill and drain
Water is not arriving, not reaching its level, not heating or not leaving on time. A dish machine may be short of fill because a supply valve is half closed or its line strainer is clogged, it may drain slowly through a scrap basket full of debris, or its booster may be too scaled to heat the rinse; a combi's steam generator may be scaled or its water treatment exhausted; a washer-extractor may time out on a slow drain. Opening the supply valve, cleaning strainers with the unit off and checking the drain line are fair; a pump, a fill valve, a heater or a leak near wiring is a visit.
Usually leads toDish machine repair
Undercounter, door-type and conveyor dish machines: tank heaters, boosters, wash pumps, fill and drain valves.
Shows up asCommercial 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.
MakeMiele Professional
Miele Professional machines in a small business laundry are usually visited at the start of the day, before the first full load.
SourceMiele 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 F18 on its commercial appliances. Follow it to the end: the last card says whether this is a visit.
Turn the machine off.
Close the water faucet to the machine.
Book a visit; Miele sends F18 to service rather than to the owner.
What not to do
F18 is not the same as the Intake message, which usually clears once the faucet is opened and the filter is cleaned. It is also not the Waterproof leak message, which has its own wording.
What you may
notice with it.
The commercial appliance problems F18 tends to arrive with. Answer these at the commercial appliance before anyone is booked.
All problemsWhere F18 usually leads
Dish 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 repairMore Miele Professional codes
Water, fill and drain on other makes
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.
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
A technical fault has occurred.
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 F18 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.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about F18.
Can I clear F18 myself?
What is the difference between F18 and Intake on a Miele Professional?
Is it safe to leave the faucet open after F18?
Can low water pressure cause F18?
Back to your everyday
Still showing F18?
A booking with a code goes further when it has the code as shown, the model and serial from the data plate, and a word on whether the unit still holds temperature, heats, rinses or spins. With those three, the office can match the likely part to your unit the same day.