FANUC Alarm PAIN-484 — WARN Pump 2 OUT low pressure warning
FANUC PAIN-484 (“WARN Pump 2 OUT low pressure warning”): Pump #2 outlet pressure has been below the low warning limit for a user configurable period of time. First check: Make sure the low pressure warning limit is appropriate.
Updated 2026-09-17 · LogrobotLM reference
Description
Pump #2 outlet pressure has been below the low warning limit for a user configurable period of time. This condition is usually caused by one or more of the following: 1. The low pressure warn limit is set too high. 2. The low pressure sensitivity is set too short. 3. The pilot line to hardener color valve is removed or broken. 4. The hardener color valve has failed. 5. The supply pressure is too low. 6. The supply line (hose, etc.) is removed or broken. 7. A broken coupling between the servo motor and pump. 8. The hardener outlet transducer has failed.
Remedy
Make sure the low pressure warning limit is appropriate. Make sure the low pressure sensitivity is appropriate. Check the pilot line to hardener color that is being used. Verify that the hardener color valve being used is not faulty. Make sure the supply pressure is appropriate. Check the supply line from paint kitchen. Verify that the pump is rotating with motor. Check the hardener outlet transducer as follows: Through the Analog I/O menu verify the transducer is spanning from near 200 cnts (0 psi) to 600+ cnts (50-80 psi) during a color change cycle.
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 →