BlueStar BSDF oven
showing F40
Control Error F40 on a BlueStar dual-fuel oven touchscreen points to the oven temperature sensor, the probe inside the cavity that tells the control how hot the oven is.
Mon–Sat, 8am–8pm
- Temperature sensor
- Temperature sensor and calibration
- Source: BlueStar
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What F40
actually means.
Control Error F40 on a BlueStar dual-fuel oven touchscreen points to the oven temperature sensor, the probe inside the cavity that tells the control how hot the oven is. Without a trustworthy reading the oven cannot hold its setting.
BlueStar oven display
What to do when F40 shows on the ovenKind of codeTemperature sensor
The reading from the temperature probe fell outside what the control will trust, or climbed far higher than the setting. A loose connector or a probe that has drifted is ruled out before the control itself, and a reading that runs away means the breaker goes off first.
Usually leads toTemperature sensor and calibration
Baking that comes out burnt or pale at the usual setting, traced to the sensor, its wiring or an oven that simply needs calibrating.
Shows up asOven Temperature Not Accurate
Recipes come out burnt or underdone at the right setting, and an oven thermometer reads far from the dial.
MakeBlueStar
A Pennsylvania maker of professional-style cooking appliances, including gas and electric wall ovens offered in hundreds of colors.
SourceBlueStar Dual Fuel Range User Manual, part 200009 rev. 1, troubleshooting (bluestarcooking.com PDF)
Touchscreen BSDF dual-fuel ovens; the same table appears for all four widths.
Before you book,
in this order.
Each step comes from BlueStar's own guidance for F40 on its ovens. Follow it to the end: the last card says whether this is a visit.
Switch the oven off and give it time to cool.
Do not open the back panel or unplug the sensor yourself.
Book a visit so the sensor and its connection can be tested.
Still there?
It usually turns into temperature sensor and calibration. Book with the code and the model number.
What not to do
F40 is not the meat probe. The removable probe you push into a roast has its own code, F50.
What you may
notice with it.
The oven problems F40 tends to arrive with. Answer these at the oven before anyone is booked.
All problems
Oven Temperature Not Accurate
5 causes, cheapest first
Where F40 usually leads
Temperature sensor and calibration.
BlueStar
ovens.
A Pennsylvania maker of professional-style cooking appliances, including gas and electric wall ovens offered in hundreds of colors.
BlueStar oven repairMore BlueStar codes
Temperature sensor on other makes
In BlueStar's own words
Control Error F40
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Touchscreen BSDF dual-fuel ovens; the same table appears for all four widths.
BlueStar F40 oven 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 F40.
Can I clear F40 myself?
Why is my BlueStar oven baking unevenly around the time F40 appeared?
Is it the BlueStar sensor or its wiring behind F40?
Back to your everyday
Still showing F40?
Book with the code exactly as shown, the full model number, and whether you can smell gas or burning — with a code, that is where the diagnosis starts.