Thermador downdraft AUTO blinks three times: too much heat at the intake
The downdraft protects its own electronics.
Mon–Sat, 8am–8pm
- Heat and grease sensors
- Range hood heat sensor repair
- Source: Thermador
Book a visit
Three short steps, about a minute.
or call (844) 398-3217
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What AUTO blinks 3 times
actually means.
The downdraft protects its own electronics. When the sensor reads too much heat, AUTO blinks three times and the fan speeds up; the lower speeds light and cannot be chosen until things cool. When the temperature drops, the hood holds its current speed and goes back to normal use.
Thermador range hood display · also shown as Auto icon blinks three times
What to do when AUTO blinks 3 times shows on the range hoodKind of codeHeat and grease sensors
A sensor inside the canopy has stopped telling the control a believable story: the heat sensor that starts the fan when the air above the burners gets hot, or on some hoods a sensor that reads grease or steam to set the speed. One that reads hot all the time keeps the blower running with the burners long cold; one that reads nothing leaves the automatic mode doing nothing. The sensor, its wiring and the canopy around it are checked at the visit.
Usually leads toRange hood heat sensor repair
Testing the sensor that starts the fan by itself when the burners get hot, so the hood starts when it should and stops when the heat is gone.
Shows up asReading a Range Hood Error Code or Blinking Light
A range hood error code may appear as letters and numbers on a display, a light that blinks in a pattern, a filter reminder that will not clear, or a beep with the fan refusing to start.
MakeThermador
Thermador hoods, inserts and downdraft vents are repaired on a home visit that begins by watching the owner run the fan.
SourceThermador Masterpiece Series Downdraft Hood Use and Care Guide (UCVM30XS, UCVM36XS)
Masterpiece Series downdraft hoods UCVM30XS, UCVM36XS and UCVP36XS.
Before you book,
in this order.
Each step comes from Thermador's own guidance for AUTO blinks 3 times on its range hoods. Follow it to the end: the last card says whether this is a visit.
Let the blower run; it is clearing heat that could harm components.
Move tall pots or a hot pan that sits right against the intake to a burner farther away, and lower very high flames.
Wait for the hood to cool, then try choosing a lower speed again.
If AUTO blinks with only modest cooking below, book a visit to have the sensor checked.
Still there?
It usually turns into range hood heat sensor repair. Book with the code and the model number.
What not to do
Three blinks of AUTO are not the same as pressing AUTO to turn on automatic mode, which starts the fan at medium when the control senses heat. It is also not the filter reminder, which blinks FILTER.
What you may
notice with it.
The range hood problems AUTO blinks 3 times tends to arrive with. Answer these at the range hood before anyone is booked.
All problems
Where AUTO blinks 3 times usually leads
Range hood heat sensor repair.
Thermador
range hoods.
Thermador hoods, inserts and downdraft vents are repaired on a home visit that begins by watching the owner run the fan.
Thermador range hood repairMore Thermador codes
Heat and grease sensors on other makes
Wall-mount range hood
The chimney hood fixed to a bare stretch of wall above the burners, its canopy catching the rising smoke while a telescoping cover hides the duct that climbs to the ceiling.
Island range hood
The hood that hangs from the ceiling over burners set into a kitchen island, open on all four sides, with its duct and wiring hidden inside a chimney that drops from above.
Range hood insert
The working core of a custom hood: a steel liner or power pack carrying the blower, filters, lights and controls, fitted inside a hood built of wood, plaster or metal by a cabinetmaker.
In Thermador's own words
When the hood detects excessive heat, the auto icon will blink 3 times.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Masterpiece Series downdraft hoods UCVM30XS, UCVM36XS and UCVP36XS.
Thermador AUTO blinks 3 times range hood 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 AUTO blinks 3 times.
Can I clear AUTO blinks 3 times myself?
Why can't I lower the fan on my Thermador downdraft after AUTO blinked?
Is AUTO blinking on a Thermador downdraft dangerous?
What makes a Thermador downdraft overheat?
Back to your everyday
Still showing AUTO blinks 3 times?
Three things make the booking useful: the letters or blink pattern exactly as they showed, the full model number from the label behind the filters, and whether the fan still moves air on every speed. With those, the technician arrives with half the answer already worked out.