Posts

All the articles I've posted.

• Hoshizaki E7 Error Code — Causes & Fix

  22 Apr, 2026

  What Hoshizaki E7 error code means, why it happens, and how to fix it step by step.

• Lennox Error Code 327 — Causes & Fix

  22 Apr, 2026

  What Lennox error code 327 means, why it happens, and how to fix it step by step.

• SEW-Eurodrive Fault F08 — Causes & Fix

  22 Apr, 2026

  What SEW-Eurodrive fault F08 means, why it happens, and how to fix it step by step.

• Siemens Sinumerik Alarm 380500 — Causes & Fix

  22 Apr, 2026

  What Siemens Sinumerik alarm 380500 means, why it happens, and how to fix it step by step.

• ABB VFD Fault 0001 Overcurrent — Causes & Fix

  22 Apr, 2026

  What ABB VFD fault 0001 means, why it happens, and how to fix it step by step.

• ABB VFD Fault 3210 — Causes & Fix

  22 Apr, 2026

  What ABB VFD fault 3210 means, why it happens, and how to fix it step by step.

• Carrier 24 Error Code — Causes & Fix

  22 Apr, 2026

  What Carrier 24 means, why it happens, and how to fix it step by step.

• Daikin E3 Error Code — Causes & Fix

  22 Apr, 2026

  What Daikin E3 means, why it happens, and how to fix it step by step.

• Follett Ice Machine Error Code E1 — Causes & Fix

  22 Apr, 2026

  What Follett E1 means, why it happens, and how to fix it step by step.

• Haas Alarm 104 Feed Hold — Causes & Fix

  22 Apr, 2026

  What Haas alarm 104 means, why it happens, and how to fix it step by step.

• Manitowoc Ice Machine Error Code 2 — Causes & Fix

  22 Apr, 2026

  What Manitowoc error code 2 means, why it happens, and how to fix it step by step.

• Mitsubishi E6 AC Error Code — Causes & Fix

  22 Apr, 2026

  What Mitsubishi E6 means on AC units specifically, why it happens, and how to fix it step by step.

• SEW-Eurodrive Fault F07: Fix DC Link Overvoltage + Codes

  22 Apr, 2026

  SEW-Eurodrive fault F07 is DC link overvoltage from regenerative braking. Learn the real causes, the step-by-step fix, and related MOVITRAC/MOVIDRIVE fault codes.

• Haas Alarm 102 — Servo Drive Fault Fix

  10 Apr, 2024

  Haas Alarm 102 means a servo drive fault has been detected on an axis. This guide covers diagnosis and fixes for the Haas CNC servo fault alarm.

• Lennox Error Code 412 — Limit Switch Fault Fix

  2 Apr, 2024

  Lennox error code 412 means the high limit switch has opened due to overheating. This guide covers diagnosis and fixes for the Lennox iComfort and SLP furnace limit fault.

• Daikin VRV / VRF U4 Error Code — Communication Fault Fix

  19 Mar, 2024

  Daikin VRV/VRF U4 error code means a communication fault between indoor and outdoor units. This guide covers wiring, PCB, and configuration fixes for U4 on commercial Daikin VRF systems.

• Copeland Compressor Error Code 1 — High Pressure Cutout Fix

  18 Mar, 2024

  Copeland compressor error code 1 means the high pressure safety cutout tripped. This guide covers how to diagnose and fix high pressure trips on Copeland scroll compressors in commercial refrigeration and HVAC systems.

• Weil-McLain Boiler Error Code E01 — Lockout Fix

  17 Mar, 2024

  Weil-McLain boiler error code E01 means the boiler locked out after repeated flame failures. This guide covers every cause and fix for E01 on Weil-McLain gas boilers.

• VFD Fault Codes OC, OV, UV, OL — Complete Fix Guide

  16 Mar, 2024

  VFD fault codes OC (overcurrent), OV (overvoltage), UV (undervoltage), and OL (overload) are the most common drive faults. This guide covers causes and fixes for all four across ABB, Yaskawa, Danfoss, and Siemens drives.

• ABB VFD Fault 2201 — Overcurrent Fix

  15 Mar, 2024

  ABB VFD fault 2201 means overcurrent during acceleration on ACS550, ACS310, and ACS355 drives — here's how to diagnose and fix it.

• Allen-Bradley PowerFlex VFD Fault F7 — Motor Stalled Fix

  15 Mar, 2024

  Allen-Bradley PowerFlex VFD Fault F7 means motor stalled — here's how to diagnose and fix it on PowerFlex 4, 40, and 400 series drives.

• Burnham Boiler E1 Lockout Code Fix

  15 Mar, 2024

  Burnham boiler E1 lockout means the burner failed to ignite after the maximum number of attempts. This guide covers every cause and fix — gas, ignition, and control board.

• Heatcraft Refrigeration Alarm 1 — High Temperature Fault Fix

  15 Mar, 2024

  Heatcraft refrigeration Alarm 1 means high box temperature on Bohn, Larkin, and Climate Control walk-in unit controllers — here's how to diagnose and fix it.

• Honeywell Thermostat E1 Error Code — Sensor Fault Fix

  15 Mar, 2024

  Honeywell thermostat E1 error code means an internal sensor fault on T6, T9, and T10 Pro series — here's what it means and how to fix it.