Exact model-family answer directory
Bosch 800 Series SHX78CM5N dishwasher troubleshooting
Choose the symptom actually shown by SHX78CM5N. Bosch dishwasher; exact model determines CrystalDry, PureDry, water softener and Home Connect equipment. Error codes remain separate records because the same characters can mean different things on another platform.
Bosch 800 Series SHX78CM5N dishwasher controls are locked or buttons do not respond
For the Bosch 800 Series SHX78CM5N dishwasher, control lock, wet panels, active cycles and door state can disable keys without a failed console.
Open record Bosch · long cycleBosch 800 Series SHX78CM5N dishwasher cycle takes too long
For the Bosch 800 Series SHX78CM5N dishwasher, sensor wash, heating delays, water temperature and repeated fill/drain correction can extend time.
Open record Bosch · detergent doorBosch 800 Series SHX78CM5N dishwasher detergent door will not open or detergent remains
For the Bosch 800 Series SHX78CM5N dishwasher, a wet cup, blocked lid, short/prewash cycle or weak circulation can leave detergent even when the latch works.
Open record Bosch · not cleaningBosch 800 Series SHX78CM5N dishwasher does not clean dishes
For the Bosch 800 Series SHX78CM5N dishwasher, fill, circulation, spray-arm movement, loading, detergent and water temperature must all be present.
Open record Bosch · not dryingBosch 800 Series SHX78CM5N dishwasher does not dry dishes
For the Bosch 800 Series SHX78CM5N dishwasher, plastic retention, rinse aid, selected option, final-rinse heat and vent/fan design affect drying.
Open record Bosch · leakingBosch 800 Series SHX78CM5N dishwasher is leaking water
For the Bosch 800 Series SHX78CM5N dishwasher, locate the first drop during fill, wash and drain instead of diagnosing from the final puddle.
Open record Bosch · spotsBosch 800 Series SHX78CM5N dishwasher leaves spots, film or cloudy glassware
For the Bosch 800 Series SHX78CM5N dishwasher, hard water, detergent dose, rinse aid, temperature and permanent glass etching require different corrections.
Open record Bosch · grindingBosch 800 Series SHX78CM5N dishwasher makes grinding, humming, knocking or squealing noises
For the Bosch 800 Series SHX78CM5N dishwasher, identify whether the sound occurs during fill, circulation or drain.
Open record Bosch · odorBosch 800 Series SHX78CM5N dishwasher smells bad or musty
For the Bosch 800 Series SHX78CM5N dishwasher, food soil, filter/sump residue, drain backflow and long idle periods should be separated from electrical odor.
Open record Bosch · stopsBosch 800 Series SHX78CM5N dishwasher stops or pauses mid-cycle
For the Bosch 800 Series SHX78CM5N dishwasher, record whether the stop occurs during fill, circulation, heat or drain and whether the door/lights changed.
Open record Bosch · Wi-FiBosch 800 Series SHX78CM5N dishwasher will not connect to Wi-Fi or the manufacturer's app
For the Bosch 800 Series SHX78CM5N dishwasher, confirm wireless eligibility, account ownership and supported network requirements before resetting.
Open record Bosch · not drainingBosch 800 Series SHX78CM5N dishwasher will not drain or leaves water in the tub
For the Bosch 800 Series SHX78CM5N dishwasher, separate normal sump water from a blocked filter, pump cover, hose, air gap, disposal connection or household drain.
Open record Bosch · not fillingBosch 800 Series SHX78CM5N dishwasher will not fill with water
For the Bosch 800 Series SHX78CM5N dishwasher, door latch, supply valve, inlet hose, float and control state should be checked before the inlet valve.
Open record Bosch · won't startBosch 800 Series SHX78CM5N dishwasher will not start or respond
For the Bosch 800 Series SHX78CM5N dishwasher, prove power, door latch, control lock, delay and Start/Resume behavior first.
Open recordConfirm the model first
Which units this covers, and how to tell yours is one of them
Every answer below is scoped to these model identifiers. A neighbouring model in the same line can use a different part, a different reset sequence or a different radio, so matching the identifier before following a procedure is the step that decides whether the rest of the page applies to you.
- Model numbers and patterns
- SHX78CM5N
- What that covers
- Bosch dishwasher; exact model determines CrystalDry, PureDry, water softener and Home Connect equipment.
Published specification
What is true of this model and changes how you fix it
These are the properties that decide which procedure applies. Each is read from the manufacturer’s own published figures for this model, not carried over from a sibling that shares its retail name.
- Drying — CrystalDry (zeolite)
- CrystalDry uses zeolite minerals to convert moisture to heat, drying plastics ~60% better than plain condensation — Bosch's best drying. No traditional exposed element.
- Rinse aid + quiet + 3rd rack
- Rinse aid still helps; flexible 3rd rack; around 42 dBA. A faint mineral smell from the zeolite early on is normal.
- Manual filter
- A manual filter must be rinsed periodically; a clog is the top cause of poor cleaning, odour and slow draining.
Where these figures were read. bosch-home.com 800 Series SHX78CM5N (CrystalDry zeolite, 3rd rack), read 2026-09-01
Manufacturer support for this product line. Bosch Home Appliances — Owner support. Official Bosch appliance manuals, error-code help, cleaning and service entry point.
Exact questions
Questions that only have an answer for the Bosch 800 Series SHX78CM5N dishwasher
Each answer below uses this model’s own published figures. The same question asked about a different model in the line has a different answer, which is why it is answered here rather than on a general page.
My Bosch 800 dishwasher won't drain.+
Clean the filter first — a clogged manual filter is the top cause. Then check the drain hose is not kinked, the air gap (if fitted at the sink) is clear, and — if a garbage disposer was recently installed — that the disposer's knockout plug was removed, which is a very common cause of a dishwasher that suddenly will not drain after new plumbing. A small amount of clean water in the filter well is normal and not a drain fault.
Structured depth, not empty permutations
Every published record carries a direct answer, scope, ordered fixes, risk notes and sources.
Device and manufacturer hubs share a consistent record system, but each answer carries the relevant controls, fault boundaries, consequences and official support entry point for that platform.
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