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FANUC Alarm FRCE-164 — F/S temp. lower limit error (F:…)

Manufacturer wording — F/S temp. lower limit error (F:%d^1)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC FRCE-164 (“F/S temp. lower limit error (F:…)”): The temperature measured at the sensor head is too low. First check: 1. Check the temperature around the sensor head. Likely part: Sensor board (Sensor interface board) +1 more.

Updated 2026-09-17 · LogrobotLM reference

Description

The temperature measured at the sensor head is too low.

Remedy

1. Check the temperature around the sensor head. If it is not low, go to the next step. 2. Check the sensor cable connectivity. Check also for cut lines. If there is nothing wrong, go to the next step. 3. Replace the sensor board. If this alarm occurs again, go to the next step. 4. Replace the sensor head.

Part to check / replace

FANUC FRCE-164 points to the hardware below — start here before ordering.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.

Related codes

FRCE-162F/S temperature data overflow (F:…)FRCE-163F/S watch dog error (F:…)FRCE-165F/S temp. upper limit error (F:…)FRCE-167SCRDY set error (F:…)

Same hardware involved

FRCE-152Sensor boardFRCE-153Sensor boardFRCE-154Sensor boardFRCE-155Sensor board

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →