Thermador dishwasher
showing E12
E12 means limescale has built up in the heat pump.
Mon–Sat, 8am–8pm
- Heating
- Heating and drying repair
- Source: Thermador
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Three short steps, about a minute.
or call (844) 430-4286
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What E12
actually means.
E12 means limescale has built up in the heat pump. It is a maintenance message, and Thermador's answer is to descale.
Thermador dishwasher display
What to do when E12 shows on the dishwasherKind of codeHeating
The water did not reach the temperature the cycle calls for in time. A heating element, its thermal cutoff or the sensor reading it.
Usually leads toHeating and drying repair
Cold washes, wet dishes and cycles that run for hours, traced to the heater, its sensor or its safety cutout.
Shows up asDishwasher Not Heating Water
Dishes and the tub are cool at the end of the cycle, and grease stays on plates.
MakeThermador
Luxury built-in dishwashers from the BSH family, in stainless and panel-ready versions.
SourceThermador US support: Dishwasher Error Codes
Thermador two-digit panels; the four-digit version is E2060. Softener salt applies only to models with a water softener.
Before you book,
in this order.
Each step comes from Thermador's own guidance for E12 on its dishwashers. Follow it to the end: the last card says whether this is a visit.
Run a descaling treatment through the dishwasher.
If your model has a water softener, keep its salt topped up to slow the scale down.
Book a visit if E12 returns right after descaling.
Still there?
It usually turns into heating and drying repair. Book with the code and the model number.
What not to do
E12 is not a broken heater. It points at mineral deposits from hard water.
What you may
notice with it.
The dishwasher problems E12 tends to arrive with. Answer these at the dishwasher before anyone is booked.
All problems
Dishwasher Not Heating Water
5 causes, cheapest first
Where E12 usually leads
Heating and drying repair.
Read these
before the visit.
Short guides that make the call quicker and the diagnosis cheaper.
All guidesThermador
dishwashers.
Luxury built-in dishwashers from the BSH family, in stainless and panel-ready versions.
Thermador dishwasher repair
Built-in dishwasher
The standard 24-inch machine under the counter, and the one nearly every American kitchen has.
Panel-ready dishwasher
Hidden behind a cabinet door, controlled from the top edge, and repaired with the panel's weight in mind.
Compact dishwasher
The 18-inch and ADA-height machines for small kitchens, where the tight tub changes both loading and repairs.
In Thermador's own words
E12 - There is limescale build up in the heat pump.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Thermador two-digit panels; the four-digit version is E2060. Softener salt applies only to models with a water softener.
Thermador E12 dishwasher repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about E12.
Can I clear E12 myself?
Does E12 mean the heater in my Thermador is failing?
How can I keep E12 from coming back on my Thermador?
Back to your everyday
Still showing E12?
Book with the characters exactly as shown, the full model number, and whether any water is on the floor — for a code, that is where the diagnosis begins.