Posts

All the articles I've posted.

• Siemens F01018 - Causes & Fix

  31 May, 2026

  F01018 means the G120 drive's power-up was interrupted multiple times and it reverted to factory settings. Fix by checking supply power stability first.

• Siemens G120 F01001 - Causes & Fix

  31 May, 2026

  F01001 means a floating-point software exception in the G120 drive. Power-cycle completely, then check firmware and control-unit health.

• Siemens G120 F01000 - Causes & Fix

  31 May, 2026

  F01000 signals an internal software error in the Siemens G120 VFD control unit. Most cases resolve with a full power-cycle reset.

• ABB ACS550 EFB3 Fault - Causes & Fix

  31 May, 2026

  EFB3 is a reserved fieldbus fault on the ABB ACS550 VFD. The most likely fix is checking communication wiring and protocol settings.

• ABB ACS550 EFB 2 Fault - Causes & Fix

  31 May, 2026

  EFB 2 is a reserved communication fault code on the ACS550 drive. Most often caused by wrong control setup or fieldbus wiring issues.

• ABB ACS550 EFB1 Fault Code - Causes & Fix

  31 May, 2026

  EFB1 on the ACS550 is a protocol-dependent embedded fieldbus fault. Most often caused by master timeout or bad fieldbus wiring.

• ABB ACS550 AI1 LOSS - Causes & Fix

  31 May, 2026

  AI1 LOSS means analog input 1 signal is missing or below the configured threshold. Check wiring and field device before adjusting parameters.

• ABB ACS580 FF63 Fault - STO Diagnostics Failure Fix

  31 May, 2026

  FF63 means STO diagnostics failure on your ABB ACS580 VFD. Reboot the control unit via parameter 96.08 or power cycle the drive.

• ABB ACS580 B1 Fault Code - Causes & Fix

  31 May, 2026

  B1 on an ABB ACS580 is an auxiliary subcode, not a standalone fault. Check the full fault number displayed with it to diagnose.

• ABB ACS580 A2B4 Fault Code - Causes & Fix

  31 May, 2026

  A2B4 means short circuit in the motor or motor cable. Most often caused by damaged cable insulation or motor winding failure.

• ABB ACS580 A2B3 Fault - Causes & Fix

  31 May, 2026

  A2B3 means earth leakage detected. The drive found unbalanced current caused by an earth fault in the motor or motor cable.

• ABB ACS580 A2B1 Fault Code - Causes & Fix

  31 May, 2026

  A2B1 means overcurrent on your ABB ACS580 VFD. Usually caused by overload, short ramps, or wiring faults. Check load and motor cables first.

• ABB ACS580 A2A1 Fault - Causes & Fix

  31 May, 2026

  A2A1 on ABB ACS580 means output phase current measurement fault (aux code 2281). Check motor cable connections and insulation first.

• Amana Furnace E03 Error Code - Causes & Fix

  31 May, 2026

  E03 means the high-limit switch opened due to overheating. Most often the filter is clogged. Check airflow first, then the limit switch.

• Amana Furnace E07 Error Code - Causes & Fix

  31 May, 2026

  E07 (7 flashes) on Amana furnaces means a gas valve circuit fault. Most often caused by a failed gas valve or bad wiring.

• Amana Furnace E06 Error Code - Causes & Fix

  31 May, 2026

  E06 on Amana furnaces signals a blower motor fault. Most often the ECM motor module has failed or a wiring connection is loose.

• Amana Furnace E05 Error Code - Causes & Fix

  31 May, 2026

  E05 on Amana furnaces signals an open fuse fault. Most often the control board fuse or a shorted wire is to blame.

• Amana Furnace E04 Error Code - Causes & Fix

  31 May, 2026

  E04 means an open limit, rollout, or reverse-airflow safety switch has shut down your Amana furnace. Check and replace your air filter first.

• Panasonic H99 Error Code - Causes & Fix

  31 May, 2026

  H99 indicates a magnetron or inverter circuit fault. Most common fix: replace the inverter board or magnetron after testing.

• Panasonic H98 Error Code - Causes & Fix

  31 May, 2026

  H98 means a high-voltage or heating-system fault in your Panasonic inverter microwave. Usually requires Power PCB or magnetron replacement.

• Panasonic Microwave U50 Error Code - Causes & Fix

  31 May, 2026

  U50 means your Panasonic microwave is overheated. Let it cool completely, clear blocked vents, and retry before calling service.

• Panasonic Microwave U30 Error Code - Causes & Fix

  31 May, 2026

  U30 means memory cook time exceeds the limit for Double or Triple Quantity mode. Reprogram the stored time to fix it.

• Panasonic Microwave U14 Error Code - Causes & Fix

  31 May, 2026

  U14 means the water tank is empty on steam-cooking Panasonic microwaves. Refill the tank, reseat it firmly, and press Stop/Reset.

• Panasonic Microwave U17 Error Code - Causes & Fix

  31 May, 2026

  U17 means an unsupported or damaged SD memory card is inserted. Remove the card, verify it's the factory-supplied type, and reinsert unlocked.