Posts

All the articles I've posted.

• Whirlpool Microwave Making Loud Noise - Causes & Fix

  11 Jun, 2026

  Usually a shorted high-voltage diode or failing magnetron. Unplug, discharge the capacitor, test the HV diode first, then the magnetron.

• Whirlpool Microwave Won't Turn Off - Causes & Fix

  11 Jun, 2026

  Usually a failed triac or stuck relay on the control board keeps the lamp, fan, or oven running. Disconnect power and replace the board.

• GE Microwave Door Won't Open - Causes & Fix

  11 Jun, 2026

  Broken latch actuator peg is the most common cause. The plastic peg snaps and the release button can't move the internal latch mechanism.

• GE Microwave Making Loud Noise - Causes & Fix

  11 Jun, 2026

  A failing high-voltage diode or worn magnetron is the most common cause. Test the diode first, then replace the magnetron if needed.

• GE Microwave Won't Turn Off - Causes & Fix

  11 Jun, 2026

  A GE microwave that won't turn off usually has a stuck relay on the control board. Disconnect power for 30 seconds and retest.

• LG Microwave Door Won't Open - Causes & Fix

  11 Jun, 2026

  Usually a broken release mechanism or stuck latch. Unplug, check for control lock, gently rock door inward while pressing release.

• LG Microwave Won't Turn Off - Causes & Fix

  11 Jun, 2026

  Usually a stuck Cancel/Off button or shorted relay on the main control board. Power-cycle the unit and check the control panel first.

• LG Microwave Making Loud Noise - Causes & Fix

  11 Jun, 2026

  Usually caused by a misaligned turntable or debris on the roller ring. Remove the tray and support, clean the cavity and wheels, then reseat all parts correctly.

• Allen-Bradley PowerFlex 525 F033 - Causes & Fix

  11 Jun, 2026

  F033 means auto-restart tries exceeded. The drive failed to restart after a fault. Check fault history for the original problem.

• Allen-Bradley PowerFlex 525 F029 - Causes & Fix

  11 Jun, 2026

  F029 means Analog Input Loss: the VFD lost the analog reference signal. Most often caused by loose or broken signal wiring at the drive.

• Allen-Bradley PowerFlex 525 F021 - Causes & Fix

  11 Jun, 2026

  F021 means Output Phase Loss on the PowerFlex 525 VFD. Most often caused by a loose or damaged motor lead between drive and motor.

• Allen-Bradley PowerFlex 525 F015 - Causes & Fix

  11 Jun, 2026

  F015 means Load Loss: output torque current is too low. Most often a broken coupling, slipped belt, or disconnected mechanical drive.

• Allen-Bradley PowerFlex 525 F013 - Causes & Fix

  11 Jun, 2026

  F013 means ground fault: current is leaking to earth from the drive output. Most often a damaged motor cable or grounded motor winding.

• Allen-Bradley PowerFlex 525 F012 - Causes & Fix

  11 Jun, 2026

  F012 means hardware overcurrent: the drive's output current exceeded its limit. Check for mechanical overload or binding on the motor first.

• Allen-Bradley PowerFlex 525 F008 - Causes & Fix

  11 Jun, 2026

  F008 means heatsink overtemperature on the PowerFlex 525 VFD. Most often caused by blocked heatsink fins or failed cooling fan.

• Allen-Bradley PowerFlex 525 F007 - Causes & Fix

  11 Jun, 2026

  F007 means motor overload. The drive detected excessive motor current for too long. Check for mechanical binding or a jammed load first.

• Allen-Bradley PowerFlex 525 F005 - Causes & Fix

  11 Jun, 2026

  F005 means OverVoltage: DC bus voltage exceeded maximum. Most often caused by motor regeneration during deceleration or high supply voltage.

• Allen-Bradley PowerFlex 525 F004 - Causes & Fix

  11 Jun, 2026

  F004 = UnderVoltage fault on the PowerFlex 525 VFD. The DC bus voltage dropped below minimum. Most often caused by low incoming AC.

• Allen-Bradley PowerFlex 525 F003 - Causes & Fix

  11 Jun, 2026

  F003 means Power Loss: the drive detected single-phase operation under load. Most often a blown input fuse or loose line connection.

• Yaskawa A1000 FbL Fault - Causes & Fix

  11 Jun, 2026

  FbL means PID feedback loss: the feedback signal fell below the set threshold. Usually caused by faulty wiring or a bad sensor.

• Yaskawa A1000 HbbF Fault - Causes & Fix

  11 Jun, 2026

  HbbF means one Safe Disable channel is open while the other is closed. Most often caused by bad wiring or an open circuit at H1 or H2.

• Yaskawa A1000 Hbb Fault - Causes & Fix

  11 Jun, 2026

  Hbb means the Safe Disable input is open, blocking drive output. Most often missing or loose jumpers at H1-HC and H2-HC are the cause.

• Yaskawa A1000 Uv4 Fault - Causes & Fix

  11 Jun, 2026

  Uv4 means gate drive board undervoltage. The drive shuts down to protect the IGBTs. Most common fix: replace the gate drive board.

• Yaskawa A1000 Uv2 - Causes & Fix

  11 Jun, 2026

  Uv2 means control power supply undervoltage on the A1000 VFD. Check incoming power phases and parameter L2-02 setting first.