When a Thermador dishwasher shows thermador e15 water error explained, the usual root is a supply valve, door seal, or level-sensing fault. Below we walk through the likely triggers, the components we measure, and the safe checks you can make before booking service.
What E15 Is Protecting Against
An E15 on a Thermador dishwasher means water has reached the base pan and tripped the safety float, which shuts the machine down to prevent a flood. The code is a symptom of a leak somewhere upstream, not a fault in the float itself. Common sources are a cracked spray-arm fitting, a loose hose clamp, a worn door seal, or a small seep at the pump housing.
Clearing It Correctly
We find and stop the leak first, then dry the base pan and reset the float so the machine can run. Simply tipping the unit to drain the pan and clearing the code leaves the leak in place, so the E15 returns on the next cycle. Because Thermador shares this safety design with other BSH machines, the diagnosis is methodical: locate the water, fix the source, verify the float, and test a full cycle.
| Code | What It Means | What We Check |
|---|---|---|
E15 | Water in base pan, float tripped | Leak source and safety float |
E24 | Related drain restriction | Filter and drain pump |
Ready to book a visit?