The answer first
Control complaints on a dishwasher are usually the machine reporting a condition it cannot meet — no fill, no drain, no heat — rather than a failed board. The code names the circuit, and the circuit is usually mechanical. On a B-Flasche dishwasher the order below is what makes this page worth reading — the causes are ranked for this kind of machine, not listed alphabetically.
What owners actually report
- A code or a flashing light with the cycle stopped — Note the step it stopped on. That is more informative than the code on most machines.
- Buttons unresponsive or needing a firm press — Panel membrane wear, which develops gradually and is not a board fault.
- The machine beeps repeatedly with the door closed — Often a leak sensor in the base tray, which is a real finding rather than a nuisance.
- The programme restarts or jumps — A control losing its state, usually from a supply interruption.
- NEAR MISS — nothing lights at all — That is supply and door latch, which is the no-start diagnosis.
The ranking that matters
- A sensed condition the machine cannot meet — First, and it covers most displayed faults: no fill because a valve or a tap is closed, no drain because the filter is blocked, no heat because the element has failed. The control is reporting accurately.
- Base-tray leak sensor triggered — Second, and it is the one owners most often try to reset away. A float in the base has detected water, and the machine has locked itself out deliberately — resetting it without finding the leak just repeats the cycle.
- Panel membrane or touch-control wear — Third. Steam from the door and years of pressing degrade the layer behind the buttons, so response becomes partial and position-dependent.
- Control board failure — Last. Genuine board faults on this appliance usually follow water ingress through the door loom, and they arrive with other symptoms rather than alone.
What to check first, second, third
- Note the step at which it halts — Fill, wash, heat or drain. Each names a subsystem and rules out the others.
- Check for water in the base tray — Tip the machine back slightly or slide paper underneath. A triggered leak sensor is a true positive far more often than not.
- Power the machine down for a minute and retry — This separates a latched state from a live fault, which changes what happens next.
The checks worth doing
- Record the code and the cycle step before resetting — Photograph the panel. Once cleared, the evidence is gone until it recurs.
About 5 min
- Switch the machine off at the spur for a full minute — The standard reset. It clears latched states and nothing else.
About 10 min
- Check the water supply and the filter — The two conditions most often reported as control faults are no fill and no drain, and both have owner-side causes.
Tools: soft brushAbout 25 min
- Look for standing water under the machine — If the base sensor has tripped, find the leak rather than resetting repeatedly.
Tools: flashlight, towelsAbout 20 min
- STOP before opening the door skin or the control housing — Both are mains-side in a wet appliance.
Power, water and the limits of owner work
Safety
Water and mains voltage share a small cabinet in this machine, so the breaker goes off before a panel comes off and stays off while your hands are inside. Shut the supply tap as well before undoing any hose. Leave the door interlock alone — it is what stops the drum turning or the heater firing with the door open.
The line between a fix and a call
The owner-side work is checking the supply, the filter and the base, and it resolves a good proportion of what presents as control faults. Do not buy a control board on the strength of a code. On this appliance the code usually names a fill, drain or heat circuit, and the part at the end of it costs a fraction of the board.
The rest of this family
How specific this page is
This is the generalized entry for B-Flasche dishwasher units. It deliberately does not carry model-level data, because model-level data is the part that goes wrong when it is copied between families: measured values, replacement part numbers and disassembly sequences. Where the more specific page exists, it is linked and it is the one to use; where it does not, what is here is written to stay true anyway.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
