The short answer
This page covers a Miele dishwasher that has power and a responsive display but never begins a programme. On Miele the specific suspects are a delay-start left set, a door that has not fully closed onto its switch, and the Waterproof System having latched after sensing water in the base — which stops the machine deliberately and looks like a refusal to start.
Causes, ranked for this Miele dishwasher
- Delay start or a finish time programmed — Why: Miele controls make time programming easy and unobtrusive, so a machine set to finish later sits silently and gives no indication beyond a small display detail.
- Door not fully closed onto its switch — Why: The Miele door closes with a firm action and a slightly obstructed basket or a misaligned custom panel leaves it short of the switch the control must see before filling.
- Waterproof System latched after sensing water in the base — Why: The base-pan float shuts the machine down and runs the pump to protect the kitchen, which correctly prevents any programme from starting until the leak is found.
- Supply stop closed or the inlet restricted — Why: The control abandons a start it cannot fill, and the stop under the sink is routinely closed for unrelated plumbing work and never reopened.
- Control or interface electronics — Why: Last, because a display that accepts a programme is a control that is largely working, and each cause above produces the same refusal for far less.
What to check, in order
- read the display carefully for a delay time, a finish time or a lock symbol. — Because: these settings explain most of this complaint and are eliminated for nothing.
- listen for a continuous pump hum with no fill. — Because: that is the base-pan protection running, and it changes the diagnosis entirely from a start fault to a leak.
- push the door firmly home and start again, noting whether it fills when held. — Because: it separates a door-switch problem from a control problem with no disassembly.
- confirm the stop valve under the sink is fully open. — Because: a control that senses no fill abandons the start, which reads as a refusal rather than a water fault.
Checks you can safely do yourself
- Read the full display before touching a key, noting any delay time, programmed finish or lock indication. — Tools: none — Time: a minute
- Cancel the current selection entirely, wait for the display to return to idle, then select the shortest programme and start it once. — Tools: none — Time: several minutes
- Listen at the machine for a continuous low pump hum without any fill, which indicates the base-pan protection has operated. — Tools: none — Time: a few minutes
- Push the door firmly closed while starting and note whether it fills when held rather than merely latched. — Tools: none — Time: a few minutes
- Open the sink cabinet and confirm the stop valve is fully open and the inlet hose is not kinked. Stop here: the base pan, float switch and control need the machine drawn out. — Tools: a torch — Time: several minutes
Before you open anything
Safety
unplug-before-service
If the machine is running its pump continuously without filling, treat it as a leak that has already been detected and stop using it until the base is checked. Kill power at the breaker before reaching behind or under the machine. The door switch is an interlock and must never be taped or bridged to test a start.
Where the owner fix ends
Clearing a delay, cancelling a programme and opening the stop valve are owner work. Call a technician immediately when the base-pan protection has latched, because that means water has reached the base and the source must be found before the machine runs again; and call when the machine only starts with the door held, since a door or custom panel adjustment is involved.
Nearest pages of the same kind
Generalized information — what this page does not cover
family model
This page is generalized information covering only one branch of the Miele dishwasher no-start complaint: a machine with a live display. It does not separate the freestanding, integrated and fully integrated families, whose door panels and switch geometry differ. No family-level or model-level page exists in this reference yet; when one is published it will be linked here.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
