Moffat Turbofan Oven Error Code Err 001: Oven Temperature Probe
Err 001 means the oven temperature probe has a problem. Turn the oven off and call for service. A technician checks the probe against the PT1000 resistance table and replaces it if the readings are not correct.
High: with no usable probe signal the oven cannot control temperature.
- Code
- Err 001
- Maker
- Moffat
- Equipment
- Convection ovens
- Applies to
- Turbofan E31D4 digital controller
What does Moffat error code Err 001 mean?
The Turbofan digital controller regulates the oven using a temperature probe. The probe is a PT1000 type, whose resistance changes in a known way with temperature. If the controller reads a value that does not make sense for that kind of probe, it shows Err 001. The service manual words it as an oven temperature probe problem, and the listed cause is the probe itself. Its steps are to disconnect the probe and measure its resistance, compare it with the PT1000 table in the manual, check continuity and connection, and replace the probe if the readings are not correct. An open circuit, a short, or a poor connection will all give a reading the controller rejects. Because the oven cannot control heat without the probe, it should be left off until the probe is tested. The same code number is reused for different messages on other controller families, so the model matters.
Affected models and control systems
Moffat Turbofan E31D4 ovens with the digital operation panel, 30D Series. Other Moffat controllers number their codes differently.
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
- Err 001 on the display
- Oven not heating or cutting out
- Temperature reading missing or wrong
Possible causes
Listed in Moffat's documentation
- Oven temperature probe failed or reading incorrectly
Other likely causes — what usually sits behind error code Err 001 on this control. A technician confirms which one it is before any part is replaced.
- A probe lead damaged where it passes near the oven wall or door hinge
- Moisture in the probe connector after a wash-down
Safe checks before calling for service
- Turn the oven off and let it cool.
- Do not use the oven until it is checked.
- Note whether the oven was washed or moved before Err 001 appeared.
- Tell the technician the model, E31D4.
How a technician diagnoses error code Err 001
- Read the code and confirm the controller is the digital E31D4.
- Disconnect the probe and measure its resistance.
- Compare the value with the PT1000 table for the current temperature.
- Check continuity and the connection at the controller.
- Replace the probe if the readings are not correct.
- The probe circuit is tested with the oven cool and powered down.
- The controller and heating circuits carry 208-240 V.
- The PT1000 resistance table is needed for a proper comparison.
How error code Err 001 differs from similar codes
Err 003 concerns the door microswitch loop wire; Err 001 concerns the oven temperature probe.
Technical reference
- Maker documentation
- Moffat owner support
- Edition
- Amendment 9, Monday 4 August 2014
- Models / control
- Turbofan E31D4 digital controller
- Section
- Section 4 Fault Finding, Controller Fault Codes (p. 9)
- 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 Moffat convection oven error codes
What is a PT1000 probe?
A temperature probe whose resistance is 1000 ohms at 0 C and rises with temperature.
Can I keep baking?
No, the oven needs the probe to control heat.
Is the controller bad?
Only if the probe tests good.
Need help with Moffat error code Err 001?
A technician confirms the cause on site and gives you the price in writing before any work starts.