

Turbo Air d0: the D-sensor reads shorted or above 100 degrees
The D-sensor sits in the evaporator; Turbo Air's M3 service manual has it pulled out of the evap when replaced.
Mon–Sat, 8am–8pm
- Sensors and probes
- Commercial controls and board repair
- Source: Turbo Air
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What d0
actually means.
The D-sensor sits in the evaporator; Turbo Air's M3 service manual has it pulled out of the evap when replaced. The board also uses it for the C1 check on the compressor. d0 means its reading is out of range at the top.
Turbo Air commercial appliance display
What to do when d0 shows on the commercial applianceKind of codeSensors and probes
A probe is handing the controller a reading it cannot trust, or none at all: a box or coil sensor torn loose from its clip, a fryer probe coated in carbon from oil left too long between filterings, a combi core probe with a kinked cable, or a connector gone green from steam and cleaning chemicals. The unit then runs on, stops, or shuts the heat or the cooling off to protect itself. Letting it cool and restarting it as the manual describes is fair; a probe that still reads wrong sits behind a panel, and that is a visit.
Usually leads toCommercial controls and board repair
Controllers, touch panels, relays, contactors and interlocks tested, and replaced only when the evidence says so.
Shows up asCommercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display
A commercial appliance error code appears as letters or numbers on a combi, fryer, reach-in controller, dish machine or laundry machine display, or as a flashing light or an alarm tone.
MakeTurbo Air
Turbo Air cabinets in a busy kitchen tend to get a visit between shifts, with the manager present to sign off the log.
SourceTurbo Air PCB settings service sheet (control menu and error codes), turboairinc.com resource center
Read from the error code item (ER) of the control menu, opened by holding both temperature buttons until SL shows, as laid out on Turbo Air's PCB settings sheet.
Before you book,
in this order.
Each step comes from Turbo Air's own guidance for d0 on its commercial appliances. Follow it to the end: the last card says whether this is a visit.
Check food temperatures and log them twice a shift.
Listen for the compressor cycling; note if it seems to run all the time or not at all.
Book a visit and quote d0.
Still there?
It usually turns into commercial controls and board repair. Book with the code and the model number.
What not to do
d0 is not an overheated evaporator; the reading is simply out of range. It is the shorted-side failure, with d1 as the open side.
What you may
notice with it.
The commercial appliance problems d0 tends to arrive with. Answer these at the commercial appliance before anyone is booked.
All problemsWhere d0 usually leads
Commercial controls and board repair.
Turbo Air
commercial appliances.
Turbo Air cabinets in a busy kitchen tend to get a visit between shifts, with the manager present to sign off the log.
Turbo Air commercial appliance repairMore Turbo Air codes
Sensors and probes on other makes
Commercial cold storage
Reach-in and pass-through cabinets, walk-in coolers and walk-in freezers, prep and sandwich tables, undercounter units and blast chillers that hold a kitchen's food at safe temperatures.
Commercial cooking equipment
Fryers, griddles, charbroilers, restaurant ranges, convection and combi ovens, steamers, kettles, holding cabinets and toasters, on gas or electric, that make up the hot side of a kitchen line.
In Turbo Air's own words
D-sensor is shorted or box temperature is above 100 degrees
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Read from the error code item (ER) of the control menu, opened by holding both temperature buttons until SL shows, as laid out on Turbo Air's PCB settings sheet.
Turbo Air d0 commercial appliance 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 d0.
Can I clear d0 myself?
What does d0 mean on a Turbo Air?
Does d0 stop a Turbo Air from cooling?
What color is the D-sensor on a Turbo Air?
Back to your everyday
Still showing d0?
A booking with a code goes further when it has the code as shown, the model and serial from the data plate, and a word on whether the unit still holds temperature, heats, rinses or spins. With those three, the office can match the likely part to your unit the same day.