Bosch US assigns E10 to the zeolite/CrystalDry chamber heater. It is not the same code as the wash heat-pump heater warning, and forum descaling routines do not establish a safe repair.
Bosch US dishwasher code guidance for the displayed code. Match the full E-Nr and its own manual; the same short number in another appliance category, market or generation must not be assumed equivalent.
Stop and isolate power before permitted user maintenance, and let water cool. Watch for sharp debris. Do not reach blindly into a sump, open electrical panels or use drain-opening chemicals. Stay clear of water near electrical equipment.
Compare the behavior
The page gives a useful system distinction and evaluates an unresolved-condition search without endorsing an undocumented chemical fix. It is deliberately narrower than the broad not-drying hub.
| Observed state | Interpretation / next step |
|---|---|
| E10 on covered CrystalDry platform | Chamber-heater fault scope. |
| Hot wash but poor drying | Useful observation, not a component test. |
| Code persists after prior repair | Provide the full repair timeline. |
Code-specific checks
Read the whole code
Photograph E10 exactly. H:10, a delayed-start display and a different E-code should not be collapsed into the same problem. Include the full E-Nr and confirm that the appliance actually has the drying system covered by the US guidance.
Describe two different outcomes
Tell service whether the machine finishes washing, whether the load is newly wetter and whether a fault stops the cycle. These observations help describe the problem; they do not let an owner certify that either heater is electrically healthy. A hot interior after washing is not a test of the entire drying assembly.
Do not prescribe repeated chemical treatment
One recurring discussion proposes frequent descaling for persistent E10. The code-specific manufacturer guidance does not validate that regimen or its compatibility with internal minerals and materials. Use only the maintenance products and intervals permitted for your appliance, and do not treat an anecdote as a repair instruction.
Know the homeowner boundary
Use Bosch’s limited power-reset advice only if safe and applicable, then seek support for a returning code. Do not open the zeolite chamber, change its minerals or attempt a heater bypass. Give service the repair history, including any previous descaling or replaced parts, so repeated work is not based on an incomplete history.
If the warning returns
Confirm exact code/platform → preserve history → arrange matched technical diagnosis.
When to stop and get help
Only carry out maintenance permitted in your model’s manual. For service, note the full model number and suffix, displayed code, selected cycle and what happened during the checks. Leave internal wiring, gas components, pumps and safety devices to a qualified professional. A symptom alone does not identify a failed part.
Sources & references
- US E10 concerns zeolite chamber heater E10 entry
Based on publicly available manuals, manufacturer support and the references listed here. We have not inspected or tested your appliance. Follow the instructions for your exact model; a guide cannot replace an in-person diagnosis.