Frymaster M3000 Fryer Error Code E16: Error AIF Probe
ERROR AIF PROBE (E16) on a Frymaster Gen II LOV fryer with the M3000 computer means the AIF RTD reading is out of range. The manual says to call service. The probe, its wiring or the board that reads it may be the cause.
Medium: a probe reading is out of range and needs service, but the manual does not order a shutdown.
What does Frymaster error aif probe mean?
An RTD is a temperature-sensing probe whose resistance changes with temperature. The M3000 computer expects the AIF RTD reading to fall inside a valid range. When the reading goes out of range, it logs E16 and shows ERROR AIF PROBE. The manual gives the meaning and one action, call service, and it lists no individual causes. A reading outside the range usually means one of three things: a probe that has failed open or shorted, a break in the wiring between the probe and the board, or a board input that no longer reads the probe correctly. Because the AIF board is a separate message (E14), E16 points at the probe and the signal path rather than at the board's presence. The page does not say what the AIF RTD measures, because the manual does not. E16 is in the Gen II LOV M3000 table and not on the 3000/3010 controller.
Affected models and control systems
Gen II LOV fryers with the M3000 computer, BIELA14 series electric; the BIGLA30 gas fryer uses the same computer family.
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
- ERROR AIF PROBE on the computer
- Alarm sounding
- Related temperature reading missing or odd
- Message returns after restart
Possible causes
Likely causes — what usually sits behind error aif probe on this control. A technician confirms which one it is before any part is replaced.
- A probe lead damaged by heat or cleaning
- A connector on the probe cable that has corroded
- A board input that reads the probe out of range
Safe checks before calling for service
- Silence the alarm and note the message.
- Turn the fryer off and let it cool, then turn it on to see whether E16 returns.
- Do not touch probes or wiring; leave connector checks to a technician.
- Write down when the message started and any recent cleaning or repair.
How a technician diagnoses error aif probe
- Read the error log for E16 and any E14.
- Inspect the AIF probe and its harness once the fryer is cool and the power is off.
- Measure the probe resistance and compare it with the temperature.
- Check the harness for opens or shorts to ground.
- Replace the probe or harness only after the measurement shows it out of range.
- Resistance values must be read against a known temperature with a meter and the manual.
- Probe wiring runs beside live 208 to 240 V parts.
- The same message can come from a probe, the wiring or the board, and only a test says which.
How error aif probe differs from similar codes
E16 is the AIF RTD reading; E14 is the AIF board missing or failed, and E17 on the 3000 controller is the ATO probe.
Technical reference
- Maker documentation
- Frymaster owner support
- Edition
- May 2011, 819-6446
- Models / control
- 3000 controller / M3000
- Section
- 1.14.4 Error Log Codes, p. 1-35
- 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 Frymaster fryer error codes
What is an RTD?
It is a temperature-sensing probe. The manual says the AIF RTD reading is out of range, which means the signal is not believable.
Is E16 the same as E14?
No. E14 is about the AIF board. E16 is about the AIF probe reading.
Can I keep using the fryer?
The manual only says to call service. Ask the technician whether anything you rely on is affected.
Need help with Frymaster error aif probe?
A technician confirms the cause on site and gives you the price in writing before any work starts.