

Hatco Temperature Probe Error: the Toast-Qwik cannot read its heat
TQ3 conveyor toasters with the touchscreen control regulate heat through an RTD temperature probe.
Mon–Sat, 8am–8pm
- Sensors and probes
- Commercial controls and board repair
- Source: Hatco
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What Temperature Probe Error
actually means.
TQ3 conveyor toasters with the touchscreen control regulate heat through an RTD temperature probe. When the probe or its wiring fails, the screen shows Temperature Probe Error and the toaster cannot hold a consistent shade. The manual's checks are resistance and wiring tests, and its final fix is a new probe.
Hatco commercial appliance display · also shown as Temperature Probe Error
What to do when Temperature Probe Error 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.
MakeHatco
Hatco equipment is often checked in the gap between breakfast and lunch, when the station it serves can do without it for a short while.
SourceHatco Toast-Qwik TQ3-400, TQ3-500, TQ3-900 and TQ3-2000 conveyor toaster installation and operating manual
Toast-Qwik TQ3-400, TQ3-500, TQ3-900 and TQ3-2000 conveyor toasters with the touchscreen control (2017 manual).
Before you book,
in this order.
Each step comes from Hatco's own guidance for Temperature Probe Error on its commercial appliances. Follow it to the end: the last card says whether this is a visit.
Switch the toaster off and let it cool before touching the conveyor area.
Restart it once and watch whether the message returns during warmup.
If it does, stop using the toaster and book a visit for the probe and its connections.
Still there?
It usually turns into commercial controls and board repair. Book with the code and the model number.
What not to do
This message is not about heating elements; element trouble shows as Heating Error. It is also not an overheated control board, which has its own Control Board Overtemp message.
What you may
notice with it.
The commercial appliance problems Temperature Probe Error tends to arrive with. Answer these at the commercial appliance before anyone is booked.
All problemsWhere Temperature Probe Error usually leads
Commercial controls and board repair.
Hatco
commercial appliances.
Hatco equipment is often checked in the gap between breakfast and lunch, when the station it serves can do without it for a short while.
Hatco commercial appliance repairMore Hatco 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.
Commercial dish machines
Undercounter, door-type and conveyor dish machines with their booster heaters and chemical feeds, the warewashing station that washes and sanitizes every rack before it goes back on the line.
In Hatco's own words
Verify wire connections on RTD temperature probe.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Toast-Qwik TQ3-400, TQ3-500, TQ3-900 and TQ3-2000 conveyor toasters with the touchscreen control (2017 manual).
Hatco Temperature Probe Error 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 Temperature Probe Error.
Can I clear Temperature Probe Error myself?
Can I use a Hatco TQ3 that shows Temperature Probe Error?
What kind of probe does a Hatco Toast-Qwik use?
Why did Temperature Probe Error start after my TQ3 was moved?
Back to your everyday
Still showing Temperature Probe Error?
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.