The short answer
On Foster a machine that will not start is most often a door that is not latching, not a failed control board. Ranked that way because the wash pump is strong enough to mask a partly blocked spray path until the filter is genuinely full.
What you observe
- The panel is completely dark — A power problem rather than an appliance problem. Check the breaker and any switched spur.
- The panel lights but nothing happens when you press start — Points at the door latch or a control lock rather than at power.
- NEAR MISS: it starts, runs a while and then stops mid-cycle — That is a different fault. Note where in the cycle it stops, because that narrows it considerably.
Causes, most likely first on Foster
- The door is not latching, so the machine never sees it closed — First on a fitted machine, which is only ever as good as its installation. Every machine refuses to run with the door open, and a latch that no longer engages produces a dead machine with a working control. A rack pushed out slightly, or a strike plate knocked out of line, is enough.
- There is no power at the machine — Second: on a fitted machine this is the next thing genuinely yours to check. A tripped breaker, a switched spur left off after other work, or a junction-box connection that has worked loose. The clue is a completely dark panel rather than one that lights and then does nothing.
- The water supply is off or the machine is not filling — Third. A machine that cannot fill will often sit apparently doing nothing, or hum briefly and stop.
- The touch panel, door switch or control board has failed — Last, and it is the reason the order above matters. The panel is dead in one area, or the machine will not respond with power confirmed, the door latched and no lock set.
Check in this order, and why
- Push the door firmly closed and listen for the latch, then look at the strike plate — It is the single most common reason a healthy machine does nothing, so it goes first.
- Look at the control panel: dark is a power problem, lit is not — One glance splits the whole list in two, which is why it comes so early.
- Check the supply valve under the sink is fully open — It explains a machine that starts and then goes quiet rather than one that is completely dead.
What an owner can safely check
- Push the racks fully in, close the door firmly and listen for the latch to engage — Check nothing in the top rack is standing proud and holding the door off its strike.
About 5 min
- Check the breaker and any switched spur, and reset the breaker once if it has tripped — A breaker that trips again immediately is a fault, not a nuisance trip.
About 10 min
- Open the supply valve fully, then start a cycle and listen for the fill — A fill you can hear means water is arriving and the fault is elsewhere.
Tools: torchAbout 10 min
- STOP HERE if the next step needs a meter on live terminals — That is where an owner check ends and a service call begins.
Before you open anything
Safety
Switch the machine off at its breaker before pulling it out or opening the junction box underneath. A dishwasher is hard-wired or plugged into an outlet you cannot see, and both sit where water collects. Never defeat the door latch to make a machine run with the door open, and never reset a breaker twice that has tripped twice.
When to call a technician
Call when the door latches properly, the panel is lit, no lock is set, the water is on and the machine still will not start, because that puts the fault in the door switch or the control. Call immediately, and leave the breaker off, if the machine trips the breaker when you restore power or anything smells hot.
Nearest pages of this class
What this page does not cover
This page covers the brand and the dishwasher class, not one family or model line. Where a family-specific or model-specific page exists for your unit, that page is the more specific answer and it takes precedence over this one. Not here: part numbers, wiring colours and component locations, which differ by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
