An Asko dishwasher counts the water going in. The flow meter produces pulses, and the control expects a certain number of them within a certain time. When the count falls short the machine reports an inlet fault and stops. The service manuals give the condition as fewer than 80 pulses within 60 seconds, or the correct number of pulses not reached within 255 seconds.
Which Code Belongs to Which Machine
- Current machines: F12, Water inlet fault 1, and F67, Water inlet fault 2. Both carry the same published owner action.
- DW90 generation: F:12, Water inlet fault, with the pulse-count condition above.
- DW20 and DW70 platforms: F4, Water intake fault. On models without a display the same fault shows as an LED pattern, and on the DW20.4 and DW20.5 plain-text panels it reads Water Inlet Fault with the instruction to make sure the water supply is open.
The Published Owner Checks
Asko's user-manual action for F12 and F67 is short: check that the water supply valve is on, and if the problem persists contact service. The manual also prints the supply pressure the machine is designed for, 4.2 to 140 psi. Australian-market manuals for the same machines add two checks worth borrowing: whether the inlet hose is connected through a pressure-limiting valve, because some of those restrict flow enough to trip the fault, and whether the outer filter on the inlet hose is blocked.
Before touching any fitting, close the water supply valve that feeds the dishwasher and switch the machine off at its wall switch or breaker. Then, with a tray and towels under the connection:
- Confirm the supply valve is fully open rather than cracked open, which is a common state after other work under the sink.
- Look along the visible run of the inlet hose for a kink or a crush point behind the machine.
- Check the mesh filter in the hose fitting. It catches grit and scale and clogs slowly, so the fault appears intermittently long before it appears permanently.
- Ask whether the problem tracks household demand. A machine that fills fine at night and faults when a shower is running is telling you about supply pressure, not about itself.
Refit the hose square and hand-tight plus a nudge, open the valve and watch the fitting for a minute before walking away.
The Other Half of the Inlet Story
There is a separate fault for a valve that lets water through when it should be shut. Current machines call it F40, Inlet valve leakage; the DW90 generation calls it F:40 and describes the machine trying to reseat the valve by opening it for two seconds and closing it again before giving up; the older platforms call it F5, valve leakage, detected as more than 80 pulses with the inlet valve deactivated. The consumer wording Asko used on the plain-text panels is unambiguous: shut off the water supply and contact a service technician.
Treat the order seriously. Close the supply valve first. A valve that no longer seals will keep filling the machine whether or not the program has ended, and the water has to be stopped at the source rather than at the control panel.
What Is Left for a Technician
Flow meters, inlet valves and the wiring between them sit inside the cabinet on a machine bolted into a run of units. If the supply valve is open, the pressure is within range, the hose is clear and the fault returns, book an Asko dishwasher repair and say which code appeared and whether the machine was filling at all when it stopped.