FANUC Alarm PNT2-179 — Canister Fill Error
FANUC PNT2-179 (“Canister Fill Error”): Prior to painting the job, the can is checked to see if enough paint has been put into the can (cylinder position counts >= TPR counts). First check: Make sure that paint has reached the docking station before starting the step to open the fill valve.
Updated 2026-09-17 · LogrobotLM reference
Description
Prior to painting the job, the can is checked to see if enough paint has been put into the can (cylinder position counts >= TPR counts). This can happen if the waiting for can full condition is falsely satisfied. Possible causes are air in the canister due to faulty color change cycles or unstable readings from the linear potentiometer. Many times this happens because the air has not been pushed out of the dump before the fill valve is opened.
Remedy
Make sure that paint has reached the docking station before starting the step to open the fill valve. A fix could be increasing the amount of time of the step to fill the paint line before opening the fill valve. With air in the can, once the piston pressure has been reapplied the air will compress causing the cylinder position to fall below the fill counts.
Related codes
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 →