Posts

All the articles I've posted.

• Yaskawa GA800 E89 Fault - Causes & Fix

  7 Jun, 2026

  E89 means the soft-charge bypass relay did not send the expected feedback signal. Replace the control board or check relay maintenance life.

• Yaskawa GA800 E86 Fault - Causes & Fix

  7 Jun, 2026

  E86 on a Yaskawa GA800 VFD is not documented in available manuals. Check your drive's keypad for the full alarm text and consult Yaskawa support.

• Yaskawa GA800 E85 Fault - Causes & Fix

  7 Jun, 2026

  E85 on the GA800 is not documented in standard Yaskawa manuals. Check the alarm history screen for the full text and contact Yaskawa support.

• Yaskawa GA800 E84 Fault - Causes & Fix

  7 Jun, 2026

  E84 means the Safe Torque Off (STO) circuit is open or not satisfied. Most often a missing jumper or open safety relay contact.

• Yaskawa GA800 E82 Fault Code - Causes & Fix

  7 Jun, 2026

  E82 is not listed in published GA800 manuals. Verify the exact code on your keypad and compare to the fault table in your drive's manual.

• Yaskawa GA800 E81 Fault Code - Causes & Fix

  7 Jun, 2026

  E81 is not a standard GA800 code in Yaskawa manuals. Verify the exact code on your keypad, check the official troubleshooting guide, and call Yaskawa support with your drive serial number.

• Yaskawa GA800 E80 Fault - Causes & Fix

  7 Jun, 2026

  E80 on a Yaskawa GA800 means the soft-charge bypass relay did not confirm closure after precharge. Re-energize the drive once first.

• Yaskawa GA800 E79 - Causes & Fix

  7 Jun, 2026

  E79 means the Safe Torque Off (STO) safety circuit is open or missing. Most common fix: restore the factory STO jumper if no safety relay is used.

• Yaskawa GA800 E78 Fault - Causes & Fix

  7 Jun, 2026

  E78 on a Yaskawa GA800 VFD is not defined in available manuals. Check your drive display and manual for the exact code meaning.

• Yaskawa GA800 E77 Fault - Causes & Fix

  7 Jun, 2026

  E77 is not a verified GA800 code. Confirm the exact display against your manual. Re-energize the drive first. Most faults need control board or relay work.

• Yaskawa GA800 E76 Fault - Causes & Fix

  7 Jun, 2026

  E76 on a Yaskawa GA800 means serial communication transmission error. The most likely fix is inspecting and reseating the comms cable.

• Yaskawa GA800 E75 Fault - Causes & Fix

  7 Jun, 2026

  E75 is a Soft Charge Answerback Fault on the GA800 VFD. The precharge relay or control board has failed. Replace the board or drive.

• Yaskawa GA800 E73 Fault - Causes & Fix

  7 Jun, 2026

  E73 is a soft charge answerback fault: the drive's precharge relay or control board failed. Most common fix: replace the control board.

• Yaskawa GA800 E72 Fault - Causes & Fix

  7 Jun, 2026

  E72 on a Yaskawa GA800 means the soft-charge bypass relay did not answer back as expected. Inspect relay contacts and control board.

• Yaskawa GA800 E70 Fault - Causes & Fix

  7 Jun, 2026

  E70 means soft-charge answerback fault: the precharge bypass relay did not confirm it switched. Re-energize the drive first.

• Yaskawa GA800 E69 Fault - Causes & Fix

  7 Jun, 2026

  E69 on a Yaskawa GA800 VFD means a Safe Torque Off (STO) safety input problem. The most common fix is installing the STO jumper.

• Yaskawa GA800 E68 Fault - Causes & Fix

  6 Jun, 2026

  E68 is not a standard GA800 code in Yaskawa literature. Double-check the display for Er-11 or another code, then consult the drive manual.

• Yaskawa GA800 E67 Fault - Causes & Fix

  6 Jun, 2026

  E67 on a Yaskawa GA800 means serial communication transmission error. The most common fix is inspecting and correcting comm wiring.

• Yaskawa GA800 E66 Fault - Causes & Fix

  6 Jun, 2026

  E66 is not a standard GA800 fault code in Yaskawa documentation. Verify the exact display, check wiring and the elementary diagram, then contact Yaskawa support.

• Yaskawa GA800 E65 Fault - Causes & Fix

  6 Jun, 2026

  E65 on a Yaskawa GA800 means the Safe Torque Off (STO) safety circuit is open or interrupted. Most often an E-stop, safety relay, or STO wiring issue.

• Yaskawa GA800 E62 Fault - Causes & Fix

  6 Jun, 2026

  E62 is not a standard GA800 code format. Verify the exact display (E62, o62, or U62) on the keypad, check for loose connections, then reset.

• Yaskawa GA800 E61 Fault - Causes & Fix

  6 Jun, 2026

  E61 on a Yaskawa GA800 indicates a soft-charge precharge circuit abnormality. The most common fix is replacing the soft-charge bypass relay.

• Yaskawa GA800 E59 Fault - Causes & Fix

  6 Jun, 2026

  E59 means Safe Torque Off circuit open. Most often a missing STO jumper or open safety relay. Restore jumper or check E-stop chain.

• Yaskawa GA800 E58 Fault - Causes & Fix

  6 Jun, 2026

  E58 is a soft-charge answerback fault: the drive's precharge bypass relay did not confirm correct operation. Replace the control board or drive.