FANUC robot brake fault — error codes to check
Brake faults cover the brake coil, its 24 V supply, the brake contactor and the release chain. These are the fault codes that implicate the motor brakes.
36 FANUC fault codes match this symptom — start with the most frequent ones below.
- BELL-024WARN Brake release switch on
- BELL-072PAUS Brake fuse blown
- DJOG-003WARN Manual brake enabled
- JOG-012WARN manual brake enabled
- LSTP-002ABORT Brake on error in grp …
- LSTP-003WARN Brake off error in grp …
- MCTL-015NONE Manual brake enabled
- MOTN-115WARN Invalid brake mask
- PAIN-147ABRT Brake fuse blown
- PAIN-181PAUS Brake Release Switch On
- PNT1-106Brake fuse blown
- PNT1-140Brake Release Switch On
- PNT2-106Brake fuse blown
- SRVO-008SERVO Brake fuse blown
- SRVO-018SERVO Brake abnormal
- SRVO-030SERVO Brake on hold
- SRVO-077SERVO Dynamic brake alarm
- SRVO-107SERVO Ext brake abnormal(Rbt:…)
- SRVO-117Brake Number Conflict
- SRVO-208SERVO Extended axis brake abnormal
- SRVO-304C-flex: manual brake enabled
- SYST-148PAUSE Dynamic Brake is Disabled
- SYST-149WARN Dynamic Brake is Enabled
- GUID-060WARN LT File R/W while moving.
- MCTL-005NONE not in control of motion
- SRVO-023SERVO Stop error excess
- SRVO-024SERVO Move error excess
- SRVO-038SERVO Pulse mismatch
- SRVO-043SERVO DCAL alarm
- SRVO-045SERVO HCAL alarm
- SRVO-046SERVO OVC alarm
- SRVO-050SERVO Collision Detect alarm
- SRVO-156SERVO IPMAL alarm
- SRVO-214SERVO Fuse blown (Amp)
- SRVO-215SERVO Fuse blown (Aux axis)
- SRVO-251DB relay abnormal
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 →