Anets Fryer Error Code Prob: Incorrect Probe Reading
Prob on an Anets AGP fryer with the digital controller means the controller is getting an incorrect reading from the temperature probe. The manual's only instruction is to contact a service company. Turn the fryer off and do not cook on it until the probe has been checked.
High: the controller cannot trust its oil temperature, so the fryer should stay off until the probe is checked.
What does Anets error code Prob mean?
The digital controller on an AGP series fryer steers the burner by the temperature its probe reports from the oil, so the probe is the single source of truth for heating. When the signal coming back is outside what the controller accepts, the display shows Prob in place of the oil temperature. The manual describes it only as an incorrect probe reading, in the digital controller table on page 30, and gives no list of causes and no operator steps beyond calling a service company. The document does not say whether the probe itself, its wiring or its mounting is at issue, and it does not say what the controller does with the burner while Prob is showing. Because the probe is also the main protection against overheated oil, treating Prob as a reason to stop cooking is the careful reading.
Affected models and control systems
Anets AGP series gas fryers (AGP55, AGP55T, AGP60, AGP60W and AGP75) with the digital controller, where the manual shows the message as Prob. Fryers with the computer control show the equivalent as PROBE OP OPEN, which has its own page.
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
- Prob shows where the oil temperature normally appears
- The fryer will not reach or hold the temperature you set
- Oil feels much hotter or cooler than the controller suggests
Possible causes
Likely causes — what usually sits behind error code Prob on this control. A technician confirms which one it is before any part is replaced.
- Probe tip bent or knocked away from its mounting so it no longer sits in the oil
- Oil residue or moisture in the probe connector giving an unstable reading
- Probe removed during cleaning and not seated fully again
Safe checks before calling for service
- Turn the fryer off and let the oil cool completely before touching anything near the vat.
- Look at the probe without touching it: it should be in its normal position, not bent, loose or caked with oil.
- Turn the fryer on once with the oil at its normal level. Do not keep cycling it.
- If Prob returns, leave the fryer off and note the oil level and what the display showed.
How a technician diagnoses error code Prob
- Read the display, confirm Prob is the only message, and ask when it began.
- Confirm the oil covers the probe tip and the probe is seated and straight.
- Inspect the probe connector and harness for oil, heat damage or a loose pin.
- Measure probe resistance at the connector against its published curve at the current oil temperature.
- Replace the probe only if it fails, then compare the display with a separate thermometer on heat-up.
- Testing the probe means disconnecting and measuring parts that sit close to hot oil and the gas burner.
- A probe that reads wrongly can let oil overheat, so the replacement and the check against a thermometer must be done properly.
How error code Prob differs from similar codes
Prob is the digital controller's form of an incorrect probe reading. The computer control shows PROBE OP OPEN or SYSTEM FAILURE for probe conditions.
Technical reference
- Document
- Anets AGP Series Installation & Operation Manual
- Edition
- 150-000007 Rev C (9/19)
- Models / control
- Anets AGP series gas fryers (AGP55, AGP55T, AGP60, AGP60W, AGP75) - digital controller
- Section
- 6.6 Digital Controller Display, p.30
- 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 Anets fryer error codes
Can I keep frying while Prob shows?
We would not. The controller depends on the probe to manage oil temperature, and the manual says only to contact a service company.
Will Prob clear on its own?
The manual does not say. A clear after restart suggests a loose connection, but a probe that fails once can fail again mid-service.
Is Prob the same as HI?
No. HI has two meanings, one of them an incorrect probe reading, while Prob is the probe reading alone.
Need help with Anets error code Prob?
A technician confirms the cause on site and gives you the price in writing before any work starts.