Posts

All the articles I've posted.

• Yaskawa GA800 E28 Fault Code - Causes & Fix

  5 Jun, 2026

  E28 is not a standard GA800 fault code. Verify the displayed code on your keypad and check your manual for the exact meaning and fix.

• Yaskawa GA800 E26 Fault - Causes & Fix

  5 Jun, 2026

  E26 is a soft-charge answerback fault: the bypass relay confirmation is missing. Most common fix is replacing the control board.

• Yaskawa GA800 E24 Fault Code - Causes & Fix

  5 Jun, 2026

  E24 is not a documented GA800 fault code in Yaskawa manuals. Check your keypad display for the full alarm text and consult your drive manual.

• Yaskawa GA800 E22 Error Code - Causes & Fix

  5 Jun, 2026

  E22 on a Yaskawa GA800 means serial communication transmission error. Check communication cable wiring, connections, and shorts first.

• Yaskawa GA800 E21 Fault Code - Causes & Fix

  5 Jun, 2026

  E21 is not a standard GA800 fault code. Verify the exact display and check your technical manual for the real code shown on the keypad.

• Yaskawa GA800 E19 Fault - Causes & Fix

  5 Jun, 2026

  E19 is a soft-charge answerback fault: the precharge relay didn't confirm closure. Most often a failed bypass relay or control board.

• Yaskawa GA800 E15 Fault Code - Causes & Fix

  5 Jun, 2026

  E15 on a Yaskawa GA800 VFD is not documented in standard manuals. Check your drive's alarm table or contact Yaskawa support.

• Yaskawa GA800 E14 Fault - Causes & Fix

  5 Jun, 2026

  E14 (oFA14) means option card connection error at CN5-A. Most common fix: reseat the option card and check for bent pins.

• Yaskawa GA800 E12 Fault - Causes & Fix

  5 Jun, 2026

  E12 on a Yaskawa GA800 VFD is not a standard code in available manuals. Check your display and consult the manual for your exact model.

• Danfoss FC302 VFD Alarm 80 - Causes & Fix

  5 Jun, 2026

  Alarm 80 means the Danfoss FC302 drive has been initialized to default values. Clear the alarm by resetting the unit, then reload your saved parameter set.

• Danfoss FC302 VFD ALARM 57 - Causes & Fix

  5 Jun, 2026

  ALARM 57 means AMA internal fault on Danfoss FC302. Restart the Automatic Motor Adaptation procedure and verify motor wiring and parameters.

• Danfoss FC302 VFD ALARM 56 - Causes & Fix

  5 Jun, 2026

  ALARM 56 on Danfoss FC302 means 'AMA interrupted by user.' The fix is to restart Automatic Motor Adaptation and let it finish uninterrupted.

• Yaskawa GA800 E10 Fault - Causes & Fix

  4 Jun, 2026

  E10 on Yaskawa GA800 means external fault input active. Check interlock wiring, overload relays, and external safety contacts.

• Yaskawa GA800 E07 Fault - Causes & Fix

  4 Jun, 2026

  E07 on a Yaskawa GA800 means serial communication transmission error. Usually caused by a disconnected or faulty communications cable.

• Yaskawa GA800 E06 Fault Code - Causes & Fix

  4 Jun, 2026

  E06 fault on Yaskawa GA800 VFD is not defined in standard documentation. Check your drive's display and manual for the exact code meaning.

• Yaskawa GA800 E05 Fault - Causes & Fix

  4 Jun, 2026

  E05 on a Yaskawa GA800 VFD signals a communication or watchdog error on the industrial network interface. Most often fixed by reseating network cables or correcting node addressing.

• Yaskawa GA800 E04 Fault Code - Causes & Fix

  4 Jun, 2026

  E04 is not a verified GA800 fault code. Check your keypad for the correct code or an external controller error, then inspect wiring.

• Yaskawa GA800 E03 Fault - Causes & Fix

  4 Jun, 2026

  E03 on a Yaskawa GA800 means motor thermistor overheat or circuit fault. Most likely fix: let motor cool, check thermistor wiring.

• Yaskawa GA800 E02 Fault Code - Causes & Fix

  4 Jun, 2026

  E02 fault code on Yaskawa GA800 VFD is not documented in manufacturer materials. Check your manual for the exact meaning and reset after fixing the cause.

• Danfoss VLT AL 4 Fault - Causes & Fix

  4 Jun, 2026

  AL 4 on a Danfoss VLT drive means Mains phase loss. Check for a missing or imbalanced incoming supply phase at the drive input terminals.

• Danfoss FC302 Alarm 58 - Causes & Fix

  4 Jun, 2026

  Alarm 58 on a Danfoss FC302 VFD means AMA internal fault. The drive's Automatic Motor Adaptation failed internally. Contact Danfoss support.

• Danfoss FC302 Alarm 54 - Causes & Fix

  4 Jun, 2026

  Alarm 54 on Danfoss FC302 means 'AMA motor too small.' Usually fixed by correcting motor data parameters or using a properly sized motor.

• Danfoss FC302 ALARM 53 - Causes & Fix

  4 Jun, 2026

  ALARM 53 on Danfoss FC302 means AMA motor too big: the motor is too large for Automatic Motor Adaptation. Verify motor size and parameters.

• Danfoss FC302 Alarm 52 - AMA Low Inom Causes & Fix

  4 Jun, 2026

  Alarm 52 means motor current is too low during Automatic Motor Adaptation. Check parameter 1-24 Motor Current against nameplate data.