What to check first
Can I keep using it?
Do not keep using the appliance while this warning is active.
Do not keep running the appliance when water is visible, a leak warning is active, or water could reach wiring or controls.
- Safe next step
- Stop the cycle if safe, turn off water when appropriate, protect the floor, and avoid repeated resets until the leak source is understood.
- Stop when
- Water is near wiring, cabinetry is getting wet, the leak returns, or the source is not safely visible.
Do not keep using the appliance if the code points to voltage, wiring, control power, burning smell, smoke, or a possible miswired supply.
- Safe next step
- Use only safe owner-level power checks, then involve a qualified technician or electrician when the source points to wiring or supply voltage.
- Stop when
- Breakers trip, lights dim, the appliance smells hot, wiring may be miswired, or the warning returns after a safe reset.
Safety boundaries
Safe first
- Match the exact brand, appliance type, and displayed code first.
- Use the model manual as the final authority for access steps.
- Stop and address visible water before retrying the appliance.
- Disconnect power before any service-access step.
Do not do this
- Do not keep running the appliance while this code is active.
- Do not disconnect inlet hoses until the water supply is off.
- Do not bypass locks, float switches, leak sensors, or other safety systems.
Common causes include
- Dishwasher water-supply valve closed or not fully open
- Household water pressure outside the manual's 4.2 to 140 psi range
- Another inlet-path condition requiring qualified diagnosis
Basic checks
- From a dry position, confirm that the dishwasher water-supply valve is fully open; if it is stuck, wet, or damaged, leave it alone and use qualified help.
- Compare flow at a nearby cold-water fixture; weak flow there too points to the household supply rather than proving a dishwasher fault.
- Inspect only the exposed inlet hose without moving the built-in dishwasher; if it is kinked, correct the visible bend, but close the valve if the hose or connection is wet.
- Ask a qualified plumber to measure pressure when needed; the exact manual specifies 4.2 to 140 psi (0.03 to 1.0 MPa).
Reset or retry steps
- Clear the message once only after normal household flow is restored, the valve is open, the exposed hose is unrestricted, and every visible connection is dry.
- Stop further retries if F12 returns, filling remains abnormal, or water appears outside the dishwasher.
When to call a technician
- Contact ASKO Customer Care if F12 persists with the water valve open and household pressure within the manual's range.
- Use a qualified plumber or appliance technician for a seized valve, leaking connection, concealed hose access, pressure measurement, or internal inlet diagnosis.
Before approving a paid visit, check warranty status and reviewquestions to ask before repair.
FAQ
What does ASKO Dishwasher code F12 usually mean?
Manual 875097-a14 documents F12 on these ASKO dishwashers as water inlet fault 1. Model context matters: The same manual lists F67 separately as water inlet fault 2 with the same owner action. F67 is a distinct display, not an alias for F12.
Can I keep using the dishwasher with code F12?
Do not keep using the appliance until the visible issue has been checked and the relevant safety warnings have been addressed. Close the water supply before any hose work, and isolate power only from a safe dry position if moisture is near the dishwasher.
When should I call a technician for ASKO F12?
Contact ASKO Customer Care if F12 persists with the water valve open and household pressure within the manual's range. A qualified technician may check Water supply valve, Inlet hose, and Water-inlet system against the model's service information before treating any part as failed.