Thermador dishwashers are built on Bosch's platform, and they inherit its behavior along with its engineering: the same drain pump design, condensation and heat-pump drying instead of a visible heating element, and the same family of E-codes. That's why an E15 acts the way it does — a float switch in the base pan detects leaked water and locks the machine into drain-only mode until the pan is dry, and why the real question is never how to clear the code but where the water came from.
We start by reading the stored fault codes, checking the base pan, and testing the drain pump and heating circuit directly. On this platform the codes are genuinely useful when you test the circuit they point to, and that keeps the repair to one visit and one correct part.
Thermador dishwasher showing E15 and stopping mid-cycle
E15 means water has reached the base pan under the tub and tripped the anti-flood switch — the drain pump runs continuously and the cycle won't start until that pan is dry. Tipping the machine to drain the pan clears the code, but it doesn't fix the leak that filled it, so the code comes back within days or weeks. Finding the actual leak point is the repair.
Thermador dishwasher not draining or showing E22
E22 flags residual water — most often a filter or drain impeller blocked by food debris or glass fragments, and occasionally a check valve or a kinked drain line downstream. The drain pump itself is a compact, replaceable unit on this platform, and testing it directly separates a blocked pump from a dead one.
Thermador dishwasher not drying dishes
There's no exposed heating element in these machines — drying relies on condensation, with rinse aid doing real work, and on newer models a heat pump assisting. If dishes come out soaked even with rinse aid filled and glassware drying better than plastics is ruled out, the heating circuit or its sensor has usually failed, which the machine often logs as a code even when it never shows one on the display.
Independent Thermador service, tested before quoted
PV Appliance Repair is an independent, insured service company — we are not affiliated with or certified by Thermador, and we never present ordinary trade experience as factory authorization. What you get instead: a technician tests the actual failure, explains the finding, and gives you a written quote before any work starts. The service call is waived when you approve and complete the repair, and if we can't fix it, you don't pay. Every completed repair carries a 90-day warranty on the documented work and installed part.