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Complete reference guide with 16+ error codes for Thermador appliances. Find your error code below, understand the cause, and learn if it's a DIY fix or needs professional repair.
Parent company: BSH Home Appliances
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Licensed & Insured · 90-Day Warranty · Same-Day Service
| Code | Description | Severity |
|---|---|---|
| E01 | Circulation (drive) motor fault Causes: Circulation motor winding failure, Motor capacitor degraded, Control board motor-driver fault, Seized motor bearing | high |
| E02 | Control board relay fault Causes: Relay contacts welded on the main board, Power-surge component damage, Cracked solder joint at a relay pin | high |
| E04 | Heater electronics / triac fault Causes: Heater triac shorted on the board, Flow-through heater drawing excess current, Wiring fault between board and heater | high |
| E06 | Door closure / latch sensor fault Causes: Door latch microswitch worn, Latch hook misaligned, Harness break at the hinge | medium |
| E09 | Flow-through heating element fault Causes: Heating element burned open, Circulation pump not priming the heater, Heater relay on the board failed | high |
| E12 | Limescale buildup in the heater loop Causes: Hard-water mineral scale on the heater, Rinse-aid dispenser empty, Softener salt depleted on built-in-softener models | medium |
| E15 | Water in base / leak-protection triggered Causes: Hose or fitting leak into the base, Door gasket tear, Sump or pump seal weeping, Base float switch stuck up | high |
| E18 | Water supply / no fill detected Causes: Household supply valve closed, Inlet hose kinked behind the unit, Inlet valve inlet screen clogged, Low household water pressure | medium |
| E22 | Filter / sump screen blocked Causes: Food soil packed into the filter, Fine micro-screen clogged, Filter not cleaned on a regular schedule | medium |
| E24 | Drain fault / water not clearing Causes: Drain hose kinked or low, Filter and pump packed with debris, Disposal knockout plug left in place, Drain pump impeller jammed | medium |