VFD Fault Codes: Complete Guide
Variable frequency drive (VFD) fault codes are how your drive tells you what went wrong — but the meaning varies by manufacturer. An "F0001" on an ABB drive means overcurrent, while "Fault 7" on an Allen-Bradley PowerFlex 755 means motor stalled. Knowing the brand-specific code is the difference between a 5-minute fix and hours of guesswork.
This hub indexes all 156 VFD fault code guides on this site. Browse by brand below for your specific drive make and model.
Most VFD fault codes fall into one of these categories: overcurrent / short circuit (motor cable fault, wrong motor data), overvoltage / undervoltage (DC bus issues, supply problems), ground fault (GF) (motor winding insulation failure), overtemperature (cooling fan, heatsink, ambient), communication loss (fieldbus, I/O link), and STO / base block (safe torque off active).
Tip: Search your exact drive brand and fault code, for example "ABB ACS880 fault 2310" or "PowerFlex 525 F7 fault".
156
Total Guides
12
Drive Brands
Priority VFD and Drive Field Guides
Start here for the drive families maintenance teams search most often. These guides cover exact model, code, first check, parts path, and when to call a drive specialist.
ABB ACS355 complete fault code guide 2310, 2330, 3130, 3210, 4110, 7121 PowerFlex 755 F12 hardware overcurrent F12, F13, F14, F17 fault isolation Schneider Altivar ATV71 fault codes OCF, ObF, OHF, PHF, SCF, USF Yaskawa P1000 fault codes OC, OV, UV1, OH, LF, GF, OL faults Danfoss VLT Micro FC 51 faults Alarms 13, 14, 29, 38, 46, 51 Siemens SINAMICS V90 faults F30001, F07900, F31101, encoder faults
Common VFD Fault Categories
| Fault Type | What It Means | Typical Fix |
|---|---|---|
| Overcurrent (OC) | Output current exceeded limit | Extend accel time, check motor cable, verify motor data |
| Overvoltage (OV) | DC bus voltage too high | Extend decel time, add braking resistor |
| Ground Fault (GF) | Current leaking to ground | Megger motor and cable, check drive output |
| Undervoltage (UV) | DC bus voltage too low | Check input power, fuses, supply contactor |
| Overtemp (OH) | Heatsink or board over temp | Clean cooling fan, check ambient, reduce load |
| Phase Loss | Input or output phase missing | Check fuses, motor cable connections, contactor |
Abb Fault Codes (29 guides)
| Guide | Description | Fix |
|---|---|---|
| ABB ACS880 PLC Integration Fault Codes | ABB ACS880 guide for PLC-integrated drives, including fieldbus loss, timeout, DC bus, drive-enable, parameter, and network mapping faults. | Fix → |
| ABB ACS150 Micro Drive Fault Codes | ABB ACS150 guide for overcurrent, DC bus, short-circuit, overtemperature, phase-loss, motor-stall, overload, and parameter faults. | Fix → |
| ABB ACS355 Fault 2330 - Ground Fault | ABB ACS355 drive Fault 2330 means a ground fault has been detected on the output. Learn causes, diagnostic steps, and how to clear this VFD fault. | Fix → |
| ABB ACS310 Fault 3130 - Input Phase Loss Fault | ABB ACS310 fault 3130 means input phase loss. Check L1/L2/L3 voltage, input fuses, breaker poles, contactor contacts, and loose terminals. | Fix → |
| ABB ACS355 Fault 3130 - Input Phase Loss Fix | ABB ACS355 fault 3130 means input phase loss. Check L1-L2-L3 voltage balance, fuses, contactors, terminals, DC bus ripple, and parameter 30.17. | Fix → |
| ABB ACS355 Fault Codes - Complete Drive Troubleshooting Guide | ABB ACS355 fault code guide covering 2310, 2330, 3130, 3180, 3210, 3220, 4110, 7121, and common machinery drive faults. | Fix → |
| ABB ACS550 Complete Fault Code Guide - All Faults and Fixes | ABB ACS550 faults cover overvoltage, undervoltage, overload, motor stalls, phase loss, fan faults, and keypad communication errors. | Fix → |
| ABB ACS550 AF10 Fault - Heatsink Overtemperature | ABB ACS550 AF10 means heatsink overtemperature. Check cooling fans, blocked fins, enclosure airflow, ambient heat, load current, and frame-size fan parts. | Fix → |
| ABB ACS550 F0001 Fault - Overcurrent Trip Diagnosis | ABB ACS550 F0001 means output overcurrent. Check motor cable shorts, ramp time, winding insulation, mechanical jams, sub-codes, and current readings. | Fix → |
| ABB ACS580 Fault 2310 - Overcurrent Trip Checks | ABB ACS580 fault 2310 guide for overcurrent trips, motor cable shorts, megger checks, jammed loads, ramp settings, and safe reset decisions. | Fix → |
| ABB ACS580 Fault 2330 - Earth Leakage Ground Fault | ABB ACS580 fault 2330 means earth leakage or ground fault. Check motor moisture, VFD cable damage, megger results, junction box contamination, and filters. | Fix → |
| ABB ACS580 Fault Codes - Overcurrent, Phase Loss, STO, and Fan Faults | ABB ACS580 faults cover overcurrent, input phase loss, DC bus voltage, panel loss, Safe Torque Off, cooling fan, and fieldbus trips. | Fix → |
| ABB ACS580 Fault 3130 - Input Phase Loss Fix | ABB ACS580 fault 3130 input-phase-loss guide for blown fuses, loose L1/L2/L3 terminals, contactors, supply imbalance, and parameter 31.22. | Fix → |
| ABB ACS880 Fault Codes - 2310, 3130, 3210, FA81 | ABB ACS880 fault-code guide for 2310 overcurrent, 3130 phase loss, 3210 DC overvoltage, FA81 Safe Torque Off, fan, encoder, and fieldbus trips. | Fix → |
| ABB ACS880 Fault 2310 - Overcurrent Trip Diagnosis | ABB ACS880 fault 2310 means output overcurrent. Check motor shorts, fast acceleration, weak insulation, jammed loads, sub-codes, and megger readings. | Fix → |
| ABB ACS880 Fault 3130 - Input Phase Loss | ABB ACS880 fault 3130 means an input phase is missing or unbalanced. Check R/S/T voltage, fuses, contactor poles, cable lugs, and utility supply. | Fix → |
| ABB ACS880 Fault 3210 - DC Bus Undervoltage | ABB ACS880 fault 3210 means DC bus undervoltage. Check supply voltage, phase imbalance, input fuses, contactors, cable sizing, and pre-charge. | Fix → |
| ABB VFD Fault 0001 - Overcurrent Trip Diagnosis | ABB VFD fault 0001 means output overcurrent. Check mechanical load, acceleration time, motor nameplate data, ground faults, and damaged output cable. | Fix → |
| ABB VFD Fault 2201 - Overcurrent Fix | ABB VFD fault 2201 overcurrent guide for fast ramps, seized loads, motor shorts, long output cables, missing reactors, and drive sizing checks. | Fix → |
| ABB VFD Fault 2310 - Earth Fault and Insulation Checks | ABB VFD fault 2310 means earth fault. Check motor winding insulation, output cable damage, wet terminal boxes, long cable runs, and output reactors. | Fix → |
| ABB VFD Fault 3210 - DC Bus Undervoltage | ABB VFD fault 3210 means the DC bus voltage dropped too low. Check input power sag, loose terminals, fuses, contactors, and line reactors. | Fix → |
| ABB VFD Fault 3130 Input Phase Loss | ABB VFD fault 3130 means input phase loss. Check fuses, breakers, L1/L2/L3 voltage balance, loose terminals, contactors, and phase monitors. | Fix → |
| ABB VFD Fault 5010 - Safe Torque Off Circuit Diagnosis | ABB VFD fault 5010 means the Safe Torque Off circuit is active. Check e-stops, guards, safety relay status, STO wiring, and 24VDC supply. | Fix → |
| ABB VFD Fault 3300 - Earth Fault and Motor Insulation Checks | ABB VFD fault 3300 means earth leakage on the drive output. Check motor insulation, cable damage, terminal moisture, and output filters. | Fix → |
| ABB VFD Fault 4110 - Control Board Temperature Fault | ABB VFD fault 4110 means the control electronics are overheating. Check enclosure airflow, internal fans, heat-sink dust, ambient heat, and load current. | Fix → |
| ABB VFD Fault 7121 - Motor Stall Fault | ABB VFD fault 7121 means motor stall. Check load binding, bearings, couplings, stall protection parameters, torque boost, and encoder feedback. | Fix → |
| ABB VFD Fault Codes - ACS550, ACS880, ACS310 Reference | ABB VFD fault codes: complete reference for ACS310, ACS355, ACS550, ACS580, and ACS880 drives including 3130, 3210, and overcurrent faults. | Fix → |
| ABB VFD Fault 9300 - Cooling Fan Fault | ABB VFD fault 9300 cooling-fan guide for failed fans, missing fan supply voltage, tach feedback faults, blocked airflow, and heat-sink cleaning. | Fix → |
| Baldor/ABB VS1 VFD Fault Codes - F0001, F0002, F0016, and F0025 | Baldor and ABB VS1 VFD faults identify overcurrent, DC bus voltage, heatsink, motor thermal, E-stop, and control-board trips. | Fix → |
Allen-Bradley Fault Codes (29 guides)
| Guide | Description | Fix |
|---|---|---|
| Allen-Bradley PowerFlex 40 F7 Motor Overload Fault | Allen-Bradley PowerFlex 40 F7 guide for motor overload trips, parameter 22, motor FLA, mechanical load, cooling, and nuisance resets. | Fix → |
| PowerFlex 525 F7 Motor Overload Fault | Allen-Bradley PowerFlex 525 F7 guide for motor overload faults, P046 current settings, nameplate FLA, wiring, load, and nuisance trips. | Fix → |
| PowerFlex 753 F12 DC Bus Overvoltage | PowerFlex 753 F12 guide for DC bus overvoltage, short decel ramps, high-inertia loads, braking resistors, line voltage, and repeat trips. | Fix → |
| PowerFlex 753 F35 Heatsink Overtemp | PowerFlex 753 F35 guide for heatsink overtemperature, blocked filters, cooling fans, cabinet heat, drive load, and repeat thermal trips. | Fix → |
| Allen-Bradley PowerFlex 40 Complete Fault Code Guide | Complete fault code guide for the Allen-Bradley PowerFlex 40 VFD, including common F-code trips, causes, and practical troubleshooting steps. | Fix → |
| Allen Bradley PowerFlex 40 F2 Fault - Ground Fault Trip | PowerFlex 40 F2 means ground fault. Check motor insulation, damaged output cable, moisture, long cable runs, and megger test results. | Fix → |
| Allen-Bradley PowerFlex 40 F3 Fault - Power Loss | PowerFlex 40 F3 fault means the drive detected an input power loss or phase loss condition. Learn the causes, diagnostics, and fix for AB PowerFlex 40 F3. | Fix → |
| Allen-Bradley PowerFlex 4M Fault Codes | PowerFlex 4M fault-code guide for F2, F4, F5, F7, F12, auxiliary input, undervoltage, overload, drive overtemp, and reset checks. | Fix → |
| Allen Bradley PowerFlex 40 F7 Fault - Motor Overload | PowerFlex 40 F7 means motor overload. Check P033 nameplate amps, A484 overload factor, high current, mechanical drag, and cooling. | Fix → |
| Allen Bradley PowerFlex 525 F7 Fault - Motor Overload | PowerFlex 525 F7 means motor overload. Check P033 nameplate amps, A484 overload factor, load current, mechanical drag, and heat. | Fix → |
| Allen Bradley PowerFlex 523 F7 Fault - Motor Overload | PowerFlex 523 F7 means motor overload. Check load binding, motor FLA, current draw, cooling, bearings, fans, and pump restrictions. | Fix → |
| Allen Bradley PowerFlex 525 F005 Fault - DC Bus Overvoltage | PowerFlex 525 F005 means DC bus overvoltage. Check decel time, braking resistor sizing, high line voltage, and regenerative loads. | Fix → |
| Allen-Bradley PowerFlex 70 Fault Codes - F2, F5, F7, F13, and F111 | PowerFlex 70 faults cover auxiliary input, power loss, overvoltage, motor overcurrent, ground fault, phase loss, and internal hardware trips. | Fix → |
| Allen Bradley PowerFlex 700 F7 Fault - Motor Overload | PowerFlex 700 F7 means motor overload. Check driven equipment, motor FLA settings, current draw, cooling, and acceleration time. | Fix → |
| Allen Bradley PowerFlex 753 F12 Fault - DC Bus Overvoltage | PowerFlex 753 F12 means DC bus overvoltage. Check fast decel ramps, braking resistors, high line voltage, overhauling loads, and bus regulation. | Fix → |
| Allen Bradley PowerFlex 753 F35 Fault - Heatsink Overtemperature | PowerFlex 753 F35 means heatsink overtemperature. Check clogged fans, blocked vents, hot enclosures, internal fans, and overload current. | Fix → |
| PowerFlex 755 F12 Hardware Overcurrent Fault | PowerFlex 755 F12 guide for hardware overcurrent trips, shorted output wiring, IGBT faults, motor leads, grounding, and drive replacement. | Fix → |
| Allen-Bradley PowerFlex 755 Fault 7 - Motor Overload | PowerFlex 755 fault 7 means motor overload. Check load binding, nameplate amps, overload class, output current, and phase imbalance. | Fix → |
| Allen-Bradley PowerFlex VFD Fault F7 - Motor Stalled Fix | PowerFlex fault F7 means motor stalled. Check seized loads, short acceleration ramps, stall settings, motor windings, and output wiring. | Fix → |
| Allen-Bradley PowerFlex F041 Motor Overload Fault | PowerFlex F041 guide for motor overload trips, including load checks, motor current, drive settings, cooling, and reset decisions. | Fix → |
| Allen-Bradley PowerFlex 755 Fault Codes | PowerFlex 755 fault-code guide for F7 overload, F12 overvoltage, F25 ground faults, cooling kits, brake resistors, and motor insulation tests. | Fix → |
| Allen Bradley PowerFlex Fault Codes - Complete Reference | Allen Bradley PowerFlex fault codes: all F and fault number codes for PowerFlex 4, 40, 523, 525, 700, 753, and 755 drives. | Fix → |
| Allen-Bradley PowerFlex F002 Fault - Auxiliary Input Trip | PowerFlex F002 means auxiliary input trip. Check the wired interlock, overload relay, safety relay, loose terminals, and input parameter. | Fix → |
| Allen-Bradley PowerFlex F012 Fault - Output Overcurrent | PowerFlex F012 means output overcurrent. Check motor leads, winding resistance, cable shorts, load binding, wrong motor wiring, and drive sizing. | Fix → |
| Allen-Bradley PowerFlex F004 Fault - DC Bus Undervoltage | PowerFlex F004 means DC bus undervoltage. Check input voltage, phase loss, fuses, bus capacitors, weak supply, and line reactors. | Fix → |
| Allen-Bradley PowerFlex F025 Fault - Drive Overtemperature | PowerFlex F025 means drive overtemperature. Check cooling fans, heatsink dust, enclosure airflow, ambient temperature, and motor load. | Fix → |
| Allen-Bradley PowerFlex Fault F063 - Software Overcurrent | Allen-Bradley PowerFlex F063 guide for SW OverCurrent trips, current-limit settings, mechanical overload, acceleration, and motor checks. | Fix → |
| Allen-Bradley PowerFlex Fault F111 - Motor Overspeed | PowerFlex fault F111 means motor overspeed. Check overspeed limits, regen during decel, encoder feedback, braking, and backdriven loads. | Fix → |
| Allen Bradley PowerFlex 525 F043 Fault Code - Phase VW Short | PowerFlex 525 F043 means the drive detected a phase V-W output short. Check motor leads, cable insulation, terminal damage, and the drive output section. | Fix → |
Yaskawa Fault Codes (22 guides)
| Guide | Description | Fix |
|---|---|---|
| Yaskawa A1000 OC Fault — Overcurrent | Yaskawa A1000 drive OC fault means overcurrent on the output. Learn causes, how to diagnose OCA, OCb, OCC variants, parameter fixes, and hardware checks. | Fix → |
| Yaskawa A1000 Fault UV1, DC Bus Undervoltage Causes & Fix | What Yaskawa A1000 UV1 means, why the drive sees DC bus undervoltage, and how to diagnose input power, contactor, and weak-supply problems. | Fix → |
| Yaskawa A1000 Fault Code OC — Overcurrent Diagnosis & Fix | Yaskawa A1000 Fault Code OC - Overcurrent Diagnosis & Fix: likely causes, checks, and repair decisions before replacing parts. | Fix → |
| Yaskawa GA700 OC Fault — Overcurrent Fix | Diagnose Yaskawa GA700 OC Fault - Overcurrent Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| Yaskawa GA700 Fault UV1 — Main Circuit Undervoltage Causes & Fix | Yaskawa GA700 Fault UV1 - Main Circuit Undervoltage Causes & Fix: likely causes, checks, and repair decisions before replacing parts. | Fix → |
| Yaskawa P1000 Fault Codes - OC, OV, UV1, OH, LF, GF, OL1 Fixes | Yaskawa P1000 fault code guide for fan and pump drives, with first checks for OC, OV, UV1, OH, LF, GF, OL1, OL2, and PF faults. | Fix → |
| Yaskawa J1000 VFD Fault Codes | Yaskawa J1000 guide for OC, OV, UV, OL1, OL2, OH, and GF trips, including load checks, motor wiring, acceleration settings, and cooling faults. | Fix → |
| Yaskawa U1000 Fault Codes: Complete Guide | Yaskawa U1000 matrix drive fault codes and diagnostics. Fault codes, causes, and technician-level troubleshooting for U1000 industrial drives. | Fix → |
| Yaskawa V1000 Complete Fault Code Guide — All Faults and Fixes | Yaskawa V1000 Complete Fault Code Guide - All Faults and Fixes: likely causes, checks, and repair decisions before replacing parts. | Fix → |
| Yaskawa V1000 OC Overcurrent Fault | Yaskawa V1000 OC guide for OCA, OCb, and OC overcurrent trips, motor insulation, acceleration time, load checks, and reset decisions. | Fix → |
| Yaskawa VFD Fault BB — Causes & Fix | What Yaskawa VFD fault BB (Baseblock) means, why it's different from a hard fault, and when action is needed. | Fix → |
| Yaskawa VFD Fault CF — Causes & Fix | Troubleshoot Yaskawa CF on VFD drives with checks for input power, motor wiring, load, cooling, parameters, and likely replacement parts. | Fix → |
| Yaskawa VFD Fault Codes — Complete Reference (V1000, A1000, GA700) | Yaskawa VFD fault codes: all major faults for V1000, A1000, J1000, and GA700 drives including OC, OV, UV, GF, and OH faults. | Fix → |
| Yaskawa VFD Fault ER — Causes & Fix | What Yaskawa VFD fault code ER means, why EEPROM errors occur, and how to recover drive parameters. | Fix → |
| Yaskawa VFD Fault GF — Causes & Fix | Troubleshoot Yaskawa GF on VFD drives with checks for input power, motor wiring, load, cooling, parameters, and likely replacement parts. | Fix → |
| Yaskawa VFD Fault OC — Overcurrent Fix | Diagnose Yaskawa VFD Fault OC - Overcurrent Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| Yaskawa VFD Fault LF — Causes & Fix | What Yaskawa VFD fault LF means, why output phase loss trips the drive, and how to fix it. | Fix → |
| Yaskawa VFD Fault OH — Causes & Fix | Troubleshoot Yaskawa VFD fault OH on VFD drives with checks for input power, motor wiring, load, cooling, parameters, and likely replacement parts. | Fix → |
| Yaskawa VFD Fault OV Overvoltage | Yaskawa OV guide for DC bus overvoltage trips on A1000, V1000, and GA500 drives, including decel ramps, braking resistors, and line voltage. | Fix → |
| Yaskawa VFD Fault PF — Causes & Fix | What Yaskawa VFD fault PF means, why input phase loss trips the drive, and how to fix it. | Fix → |
| Yaskawa VFD Fault SC — Causes & Fix | Troubleshoot Yaskawa VFD fault SC on VFD drives with checks for input power, motor wiring, load, cooling, parameters, and likely replacement parts. | Fix → |
| Yaskawa VFD Fault UV1 — Causes & Fix | Troubleshoot Yaskawa UV1 on VFD drives with checks for input power, motor wiring, load, cooling, parameters, and likely replacement parts. | Fix → |
Siemens Fault Codes (16 guides)
| Guide | Description | Fix |
|---|---|---|
| Siemens G120C VFD Fault Codes | Siemens G120C guide for F00001, F00002, F00003, F00004, F30001, drive cooling, motor wiring, braking, and BOP-2 checks. | Fix → |
| Siemens SINAMICS G120X Fault Codes: Complete Guide | Siemens SINAMICS G120X VFD fault codes and diagnostics. F-series and A-series codes, causes, and technician-level troubleshooting. | Fix → |
| Siemens Micromaster F0022 Fault - Hardware Monitoring | Siemens Micromaster F0022 guide for hardware monitoring trips, DC-link current checks, motor cable faults, braking issues, and replacement-drive decisions. | Fix → |
| Siemens Micromaster 440 Fault F002 — Overcurrent | Siemens Micromaster 440 F002 fault means overcurrent on the output. Learn the causes, parameter fixes, and hardware checks for F002. | Fix → |
| Siemens Micromaster Fault F001 — Causes & Fix | Diagnose Siemens Micromaster Fault F001 - Causes & Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| Siemens SINAMICS F30001 Fault - Power Unit Overcurrent | Siemens SINAMICS F30001 fault guide for power-unit overcurrent, motor cable shorts, ground faults, axis jams, ramp settings, and G120/S120/V90 drive checks. | Fix → |
| Siemens SINAMICS F30003 Fault - DC Link Undervoltage | Siemens SINAMICS F30003 fault guide for DC link undervoltage, input phase loss, blown fuses, contactor drop-out, line reactors, and G120/S120 power-unit checks. | Fix → |
| Siemens SINAMICS G120 F00001 Fault — Causes & Fix | Diagnose Siemens SINAMICS G120 F00001 Fault - Causes & Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| Siemens SINAMICS G120 Fault F30021, Ground Fault Causes & Fix | What Siemens SINAMICS G120 Fault F30021 means, why the power unit detects a ground fault, and how to isolate the motor, cable, or brake wiring problem. | Fix → |
| Siemens SINAMICS V20 F1 Fault — Causes & Fix | Diagnose Siemens SINAMICS V20 F1 Fault - Causes & Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| Siemens SINAMICS V20 F1 Fault: Overcurrent Causes and Fix | Siemens SINAMICS V20 F1 guide for overcurrent trips, motor winding faults, output shorts, seized loads, ramp settings, and drive output damage. | Fix → |
| Siemens SINAMICS V20 F4 Fault - Inverter Overtemperature | Diagnose Siemens SINAMICS V20 F4 inverter overtemperature faults: airflow checks, cabinet temperature, load review, and repair decisions. | Fix → |
| Siemens SINAMICS V20 F4 Overtemperature | Siemens V20 F4 means the inverter heat sink overheated. Check cabinet airflow, fan operation, dust, load current, and ambient temperature. | Fix → |
| Siemens SINAMICS V90 Fault Codes - F30001, F07900, F31101 Fixes | Siemens SINAMICS V90 servo drive fault code guide for F30001 overcurrent, F07900 motor blocked behavior, encoder faults, and common startup alarms. | Fix → |
| Siemens VFD F0002 Overvoltage Fault | Siemens F0002 guide for DC-bus overvoltage trips on G120, V20, Micromaster, and G110 drives, including regen, line-voltage, and braking checks. | Fix → |
| Siemens VFD Fault Codes - F0001, G120, V20 | Siemens VFD fault-code guide for F0001/F00001 overcurrent, SINAMICS G120, V20, S120, Micromaster 440, A-codes, drive panels, fans, and braking resistors. | Fix → |
Danfoss Fault Codes (14 guides)
| Guide | Description | Fix |
|---|---|---|
| Danfoss FC102 VLT HVAC Drive Fault Codes | Danfoss FC102 fault-code guide for AL 2, AL 14, AL 17, AL 29, BACnet/Modbus faults, LCP resets, cooling fans, thermistors, and drive checks. | Fix → |
| Danfoss FC301 Fault AL 14 — Ground Fault Causes & Fix | Danfoss FC301 AL 14 ground-fault guide for motor insulation, output cable damage, moisture in terminal boxes, EMC leakage, and megohm testing. | Fix → |
| Danfoss FC302 Fault Codes - Alarm 14, 29, 38, and 57 | Danfoss FC302 fault-code guide for VLT AutomationDrive alarms: earth fault, heatsink temperature, internal fault, undervoltage, and current limit. | Fix → |
| Danfoss FC302 Alarm AL 29 — Causes & Fix | Danfoss FC302 AL 29 points to power-board overheating. Check cabinet airflow, heatsink fans, load current, ambient heat, and drive sizing. | Fix → |
| Danfoss VFD Fault AL 14 - Ground Fault Fix | Diagnose Danfoss VFD AL 14 ground faults: motor insulation tests, output-cable checks, drive isolation, and repair decisions. | Fix → |
| Danfoss VFD Fault Codes — FC301, FC302, FC102 Reference | Danfoss VFD fault codes: all alarm codes for VLT FC301, FC302, and FC102 drives including AL-14, AL-29, OC, OL, and trip faults. | Fix → |
| Danfoss VFD Fault E-Trip — Causes & Fix | What Danfoss VFD fault E-Trip means, why an external trip input activates, and how to diagnose and clear it. | Fix → |
| Danfoss VFD Fault OCL — Causes & Fix | Troubleshoot Danfoss OCL on VFD drives with checks for input power, motor wiring, load, cooling, parameters, and likely replacement parts. | Fix → |
| Danfoss VFD Fault OL — Causes & Fix | Troubleshoot Danfoss VFD fault OL on VFD drives with checks for input power, motor wiring, load, cooling, parameters, and likely replacement parts. | Fix → |
| Danfoss VFD Fault UL — Causes & Fix | What Danfoss VFD fault UL means, why underload trips the drive, and how to fix it. | Fix → |
| Danfoss VFD W30 Brake Resistor Overheat | Danfoss W30 means the brake resistor exceeded its thermal limit. Check resistor sizing, wiring, braking duty, FC301/FC302 setup, and ventilation. | Fix → |
| Danfoss VLT 2900 Fault Codes: Complete Guide | Danfoss VLT 2900 VFD fault codes and diagnostics. AL-series alarm codes, causes, and technician-level troubleshooting for VLT 2900 drives. | Fix → |
| Danfoss VLT Alarm 14 Earth Fault | Danfoss VLT Alarm 14 guide for earth-fault trips, output current leakage, motor insulation, cable damage, grounding, and safe drive testing. | Fix → |
| Danfoss FC 51 Fault Codes | Danfoss VLT Micro FC 51 alarms 13, 14, 29, 38, and 46. Check motor cables, earth faults, cooling, phase loss, and internal faults. | Fix → |
Emerson Fault Codes (2 guides)
| Guide | Description | Fix |
|---|---|---|
| Control Techniques Unidrive SP Fault Codes — Complete Guide | Unidrive SP fault codes identify DC bus, encoder, motor, braking, thermal, and communication trips on Control Techniques drives. | Fix → |
| Emerson VFD Fault Codes - Commander SK, C300, Mentor MP | Emerson and Control Techniques VFD fault guide for Commander SK, Commander C300, and Mentor MP drives: OU, UU, OI.AC, fan, SmartStick, and comms trips. | Fix → |
Sew-Eurodrive Fault Codes (3 guides)
| Guide | Description | Fix |
|---|---|---|
| SEW-Eurodrive F07 Overvoltage Fault | SEW-Eurodrive F07 fault guide for DC-link overvoltage, braking resistors, deceleration ramps, incoming power, regeneration, and MOVITRAC checks. | Fix → |
| SEW-Eurodrive VFD Fault Codes | SEW-Eurodrive VFD fault guide for MOVITRAC/MOVIDRIVE alarms, F07, F08, braking resistors, encoders, cooling fans, and drive checks. | Fix → |
| SEW-Eurodrive F08 Fault | SEW-Eurodrive F08 guide for speed-monitoring trips, encoder feedback, load jams, brake release, parameter checks, and MOVITRAC limits. | Fix → |
Schneider Fault Codes (10 guides)
| Guide | Description | Fix |
|---|---|---|
| Schneider Altivar 212 Fault OCF — Overcurrent Causes & Fix | Schneider Altivar 212 Fault OCF - Overcurrent Causes & Fix: likely causes, checks, and repair decisions before replacing parts. | Fix → |
| Schneider Altivar 61 OBF Fault — Causes & Fix | Altivar 61 OBF means overbraking or DC bus overvoltage. Check decel time, braking resistor, load inertia, and line voltage before restarting. | Fix → |
| Schneider Altivar Fault CFF — Causes & Fix | Diagnose Schneider Altivar Fault CFF - Causes & Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| Schneider Altivar Fault INF — Causes & Fix | What Schneider Altivar VFD fault code INF means, why an internal fault occurs, and how to recover the drive. | Fix → |
| Schneider Altivar Fault OBF — Causes & Fix | What Schneider Altivar OBF fault means, why motor overload trips the drive, and how to fix it. | Fix → |
| Schneider Altivar Fault OCF — Causes & Fix | What Schneider Altivar OCF fault means, why overcurrent trips the drive, and how to fix it. | Fix → |
| Schneider Altivar Fault ULF — Causes & Fix | What Schneider Altivar VFD fault code ULF means, why motor underload trips, and how to diagnose and configure it. | Fix → |
| Schneider Altivar 320 Fault Codes | Schneider ATV320 fault-code guide for OCF, OBF, PHF, CFF, INF, motor wiring, braking resistors, parameters, and SoMove checks. | Fix → |
| Schneider Altivar 630 Fault Codes: Complete Guide | Schneider Altivar 630 VFD fault codes and diagnostics. ATV630 fault codes, causes, and technician-level troubleshooting for industrial drives. | Fix → |
| Schneider Altivar ATV71 Fault Codes | Schneider Altivar ATV71 fault code guide covering OCF, ObF, OHF, PHF, USF, SOF, SCF, LFF, and output phase faults. | Fix → |
Mitsubishi Fault Codes (5 guides)
| Guide | Description | Fix |
|---|---|---|
| Mitsubishi FR-A800 Fault E7 — CPU Error Causes & Fix | Diagnose Mitsubishi FR-A800 Fault E7 - CPU Error Causes & Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| Mitsubishi FR-A800 E.OC1 Overcurrent Fault | Mitsubishi FR-A800 E.OC1 fault guide for acceleration overcurrent, ramp time, motor cable insulation, output reactors, load jams, and motor data. | Fix → |
| Mitsubishi FR-D700 VFD Fault Codes | Mitsubishi FR-D700 guide for OC1, OV3, THT, THM, GF, PE, UVT, cooling fan, braking, motor cable, and parameter faults. | Fix → |
| Mitsubishi FR-E800 Fault E6 — Causes & Fix | Mitsubishi FR-E800 E6 points to drive or parameter trouble. Check motor data, wiring, load, restart settings, and fault history before parts. | Fix → |
| Mitsubishi FR Series VFD Fault E6 — Causes & Fix | What Mitsubishi FR series VFD fault E6 means, why the brake transistor fault trips, and how to diagnose and fix it. | Fix → |
Fuji Fault Codes (1 guide)
| Guide | Description | Fix |
|---|---|---|
| Fuji Frenic-Mini VFD Fault Codes Guide | Fuji Frenic-Mini VFD fault codes explained. Learn the common overcurrent, overvoltage, undervoltage, ground fault, and memory errors on Fuji drives. | Fix → |
Hitachi Fault Codes (1 guide)
| Guide | Description | Fix |
|---|---|---|
| Hitachi WJ200 / WL200 VFD Fault Codes Guide | Hitachi WJ200 and WL200 VFD fault codes explained. Diagnose overcurrent, ground fault, undervoltage, EEPROM, and overheating trips quickly. | Fix → |
General VFD Guides (24 guides)
| Guide | Description | Fix |
|---|---|---|
| ABB ACS880 Drive Maintenance Guide | ABB ACS880 maintenance guide for fan intervals, capacitor reforming, IGBT checks, cooling cleanup, firmware updates, and faults 4110, 4210, and 2310. | Fix → |
| Control Techniques VFD Fault Codes | Control Techniques guide for Unidrive M, Unidrive SP, and Commander SK trips, including OI.AC, OU, UV, OHt, th, O.SPd, and tunE faults. | Fix → |
| Delta VFD Fault Codes - C2000, MS300, CP2000, VFD-E | Delta VFD fault guide for C2000, MS300, CP2000, VFD-E, VFD-B, and VFD-M drives: overcurrent, overvoltage, fans, keypads, and reset checks. | Fix → |
| Eaton PowerXL VFD Fault Codes Guide | Eaton PowerXL and DG1/DC1 VFD fault codes explained. Learn the most common overcurrent, undervoltage, overtemperature, and motor protection faults. | Fix → |
| Electrical Panel Trip and Reset Guide | How to identify, diagnose, and reset tripped circuit breakers and electrical panel faults. | Fix → |
| Industrial Control Panel Fault Troubleshooting Guide | How to troubleshoot industrial control panel faults: what common faults mean and how to diagnose and fix them. | Fix → |
| Johnson Controls HVAC VFD Fault Codes — Common Faults and Fixes | Guide to Johnson Controls variable frequency drive fault codes used in HVAC systems, what each fault means, and how to fix the most common problems. | Fix → |
| KB Electronics KBVF DC Drive Fault Codes — Complete Guide | KB Electronics KBVF and KBIC DC drive fault codes: common trips, LED indicators, causes, and fixes for KB DC motor speed controls. | Fix → |
| Lenze i550 Fault LF — Phase Loss Causes & Fix | Diagnose Lenze i550 Fault LF - Phase Loss Causes & Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| Lenze SMD Fault 0x0001 — Overcurrent | Lenze SMD fault 0x0001 means overcurrent on the drive output. Learn the common causes, parameter checks, and repair steps. | Fix → |
| Lenze VFD Fault CE — Causes & Fix | What Lenze VFD fault code CE means, why communication errors occur, and how to restore the fieldbus or serial link. | Fix → |
| Lenze VFD Fault LP — Causes & Fix | Diagnose Lenze VFD Fault LP - Causes & Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| LS Electric VFD Fault Codes — Complete Troubleshooting Guide | LS Electric (LG) VFD fault codes for iS7, iG5A, iP5A, and SV series. What each code means and how to fix it. | Fix → |
| Nidec (Leroy-Somer) VFD Fault Codes — Complete Guide | Nidec and Leroy-Somer VFD trips identify overcurrent, DC bus, thermal, motor, encoder, fieldbus, and parameter faults. | Fix → |
| Omron 3G3MX2 E04 Fault — Ground Fault | Omron MX2 / 3G3MX2 E04 fault means the drive detected a ground fault on the output. Learn causes, diagnostics, and the fix for E04. | Fix → |
| Omron VFD Fault E07 — Causes & Fix | Diagnose Omron VFD Fault E07 - Causes & Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement. | Fix → |
| Parker AC30 VFD Fault Codes Guide | Parker AC30 drive fault codes explained. Diagnose overcurrent, overvoltage, feedback, STO, and thermal faults on Parker AC30 VFDs. | Fix → |
| Siemens SINAMICS G120 Setup and Fault Codes | Siemens SINAMICS G120 guide for Startdrive setup, F0001-F0106 faults, BOP-2 keypads, parameter backup, braking, and motor checks. | Fix → |
| Toshiba VFD Fault Codes Guide (VF-S15, VF-S9) | Toshiba VF-S15 and VF-S9 VFD fault codes explained, including overcurrent, overvoltage, overheating, and EEPROM faults. | Fix → |
| Vacon VFD Fault Codes - F1, F2, F3, Vacon 100 and NXP | Decode Vacon 100 and NXP F1, F2, F3, F8, F14, and F52 faults with subcode checks, braking resistor sizing, cable tests, and fault-history steps. | Fix → |
| VFD Fault Codes: Complete Troubleshooting Guide | VFD fault codes explained across ABB, Allen-Bradley, Danfoss, Siemens, Yaskawa, and Schneider drives with common alarms and practical fix steps. | Fix → |
| VFD Fault Code Lookup: All Brands | Master VFD fault code lookup guide covering ABB, Danfoss, Siemens, Schneider, Mitsubishi, Yaskawa, Allen-Bradley, and more. | Fix → |
| VFD Fault Codes OC, OV, UV, and OL | VFD fault guide for OC, OV, UV, and OL trips across ABB, Yaskawa, Danfoss, and Siemens drives, including load, wiring, power, and braking checks. | Fix → |
| VFD Trip Reset Guide: How to Clear Fault Codes Safely | Complete guide to resetting VFD trip codes safely, including ABB, Yaskawa, Allen-Bradley, Danfoss, Siemens, and other major drive brands. | Fix → |
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