KitchenAid Dishwasher Repair in Toronto — Not filling with water

• A 6-1 (F6E1) in the clean-light blink log is the defining KitchenAid not-filling fault on the HE tall-tub: the control flashes the function code, pauses ~2 seconds, then the problem code, and 6-1 is the Inlet Water function meaning the electronic control never detected water entering the tub. We read the 6-1 pair off the Clean light first (or the F6E1 on display KDTM/KDTE models), then split the cause - supply side, float, or valve - before condemning anything, because a 6-1 is a fill-detection fault, NOT a control board (a board swap on a closed supply valve fixes nothing).
• When the supply checks good and the 6-1 traces to the valve itself, the cure is the water inlet valve W10872255 - the same genuine inlet valve the module already carries for the overfill-leak fault, now diagnosed from the opposite direction (it won't OPEN to fill rather than won't CLOSE). We meter the solenoid for resistance (a healthy coil reads roughly 1,400 ohms; an open/infinite reading condemns the valve) and pull the inlet to check the screen, since a scaled or debris-packed inlet screen starves the fill and reads as a no-fill long before the coil is dead. Inlet valves are not repairable - a valve that won't open, or whose screen is choked, gets replaced. The superseding/cross service valve W11434044 also lists for these tubs, so we confirm the right valve against model/serial before ordering.
• 6-2 (F6E2) is the electrical-side fill fault and is read differently from 6-1: it flags a water-inlet-valve circuit problem (a shorted/open solenoid or a broken connection to it) rather than a no-water-detected condition. We separate the two on the same visit - a 6-1 sends us to supply, float and the valve screen first, while a 6-2 sends us to the inlet-valve solenoid resistance and its harness spades before the valve, because the wiring to the valve is a common 6-2 trigger and a fresh W10872255 on a chafed connector still won't fill. The control board is the last suspect on a 6-2, not the first.
• The not-filling cause owners never suspect - and the one we rule out before any valve - is a stuck overfill float: the float in the front-right corner of the tub rides up with the water and trips its switch to shut the inlet valve, but if it sticks in the UP position (a fallen utensil, a chip of glass, or scale crusting the guide tube) the control thinks the tub is already full and never opens the valve, so the unit reads as not filling with nothing broken. This is the most over-replaced not-filling cause on the platform. We lift and drop the float to confirm it moves freely and clear the guide tube - a float that frees up and fills clean saves the customer a valve it never needed. A jammed float can also throw a 6-4 (F6E4) float-switch-open code, which we read alongside the 6-1.
• A 6-1 that comes and goes is a supply-pressure / flow problem far more than a dead valve: KitchenAid's own installation spec calls for a water supply between 20 and 120 psi and a hot feed around 120F, and a partly-closed saddle/shut-off valve, a kinked or scaled braided supply line, or a clogged inlet screen drops flow below what the valve needs to register a fill inside the control's time-out window. We verify pressure and a fully-open dedicated shut-off, flush the inlet screen, and confirm the supply actually delivers before touching the valve - a slow-fill that disappears once the line is opened up is an install/supply fix, not a part.
• A KitchenAid that's dead at the panel and never even attempts a fill is usually NOT a fill fault at all - it's the control-board thermal fuse open. The bi-metal fuse W10258275 (older fuse-and-harness kit 8193762, harness NOT reused) cuts all power to the controls after an overheat event, so the unit can't energize the inlet valve and reads as not filling. We meter the fuse for continuity before chasing the fill circuit, and we always trace WHY it opened (a stuck heater, a chafed harness) so the replacement doesn't simply blow again - dropping a valve into a no-power machine fixes nothing.
• The mirror-image fault we confirm we are NOT looking at is the overfill/leak side: a valve stuck OPEN keeps admitting water past the fill point and floods the base pan, tripping the F8E4 overflow/leak code and running the drain pump continuously - the opposite of a not-filling complaint. On a true not-filling call the tub stays dry and the valve never opens; on an F8E4 the tub overfills. We read the active code (6-1/6-2 fill versus F8E4 overflow) so the right failure mode gets diagnosed, because a no-fill and an overfill present at the same inlet valve but demand opposite verdicts.

KitchenAid not filling with water in Toronto — the local specifics

• The recurring KitchenAid-in-Toronto not-filling pattern we see is a slow-fill or no-fill 6-1 that traces to hard-water scale, not a dead valve: a choked inlet-valve screen or a float stuck up in a scaled guide tube reads as not-filling long before the W10872255 coil actually fails - so the honest first move on these calls is clearing the screen and freeing the float, and a real share of them fill clean without a part. The genuine valve goes in only when the solenoid reads open or the screen damage is past flushing.
• We bring the inlet valve W10872255 (open Whirlpool-channel, stocks locally), the thermal-fuse kit 8193762 for the dead-panel no-fill, a meter to read the solenoid (~1,400 ohms healthy / infinite = replace) and the 6-1 vs 6-2 vs F8E4 codes off the Clean light, plus inlet-screen and supply-line consumables to handle the Toronto hard-water and saddle-valve causes on the spot.

For the full KitchenAid dishwasher module — every fault, part number and code — see KitchenAid dishwasher repair in Toronto, and for the same fault across all brands the dishwasher not filling with water guide.