Newco Bistro Touch Error Code Thermistor Error Short: Shorted Sensor
Thermistor Error Short means the thermistor reads shorted, and the brewer shows a Call For Service screen. The manual lists a thermistor that is not plugged in, a failed thermistor and control board failure. The first step is to ensure all thermistor connections are secure.
High: the brewer cannot read temperature and stops.
- Code
- Thermistor Error Short
- Maker
- Newco
- Equipment
- Coffee brewers
- Applies to
- Newco Bistro Touch (the LCD Touch manual PN 122117 20260630 prints the same error chart)
What does Newco Thermistor Error Short mean?
The thermistor is the tank temperature sensor. The control reads its resistance, and a shorted reading is extremely low. When it sees that, it stops and shows a Call For Service screen reading Thermistor Error Short. The manual lists three causes: the thermistor is not plugged in, the thermistor has failed, or the control board has failed. The actions are to ensure all thermistor connections are secure, replace the thermistor, and replace the control board, the last marked as requiring service. The unplugged-sensor cause is notable. A sensor that is not plugged in can look like a short to the control, so the connection check comes before any part is ordered. This error is the opposite reading from Thermistor Error Open.
Affected models and control systems
Newco Bistro Touch brewers. The LCD Touch manual (PN 122117, 20260630) prints the same error chart.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- Call For Service screen showing Thermistor Error Short
- Brewer not heating
- Brew stopped at startup
Possible causes
Listed in Newco's documentation
- Thermistor not plugged in
- Thermistor has failed
- Control board failure
Other likely causes — what usually sits behind Thermistor Error Short on this control. A technician confirms which one it is before any part is replaced.
- Thermistor plug loosened when the brewer was moved or cleaned
- Sensor lead pinched against the tank
- Moisture in the thermistor connector
- Sensor shorted by scale and heat
Safe checks before calling for service
- Switch off the brewer and unplug it.
- Do not open the cabinet; check for spilled water on the base and back.
- Plug in and switch on to see whether the screen returns.
- If Thermistor Error Short returns, call for service and ask for the connections to be checked first.
- Tell the technician whether the brewer had been moved or cleaned beforehand.
How a technician diagnoses Thermistor Error Short
- Read the screen and confirm Thermistor Error Short.
- Ensure all thermistor connections are secure, as the manual says.
- Measure the thermistor resistance with power off.
- Check the sensor lead for pinches and moisture.
- Replace the thermistor, then the board only if the test calls for it.
- The thermistor plugs into a board that carries live line voltage.
- Resistance must be measured with a meter and compared to a table.
- The manual marks board replacement as requiring service.
How Thermistor Error Short differs from similar codes
Thermistor Error Open is the same sensor alarm for an open reading. This one is for a shorted reading.
Technical reference
- Document
- Bistro Touch operation manual
- Edition
- PN 128142 20260513
- Models / control
- Newco Bistro Touch (the LCD Touch manual PN 122117 20260630 prints the same error chart)
- Section
- Servicing the Machine, Error Messages, p. 34
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Newco coffee brewer error codes
Can an unplugged thermistor cause this?
Yes, the manual lists a thermistor that is not plugged in as a cause.
Is Short the same as Open?
No. Short is an extremely low reading and Open is an extremely high reading.
Can I brew with this error?
No. The brewer stops on the Call For Service screen.
Need help with Newco Thermistor Error Short?
A technician confirms the cause on site and gives you the price in writing before any work starts.