Industrial Error Code Fixes
RSS FeedFast troubleshooting guides for HVAC, CNC, refrigeration and commercial equipment. Find error codes, root causes, and step-by-step fixes — written by technicians, for technicians.
Browse guides below or search for your specific error code to get back up and running fast.
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AstroPaper 5.0
AstroPaper v5: keep the clean look, updates under the hood.
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Carrier 13 Error Code — Limit Switch Lockout Fix
Carrier error code 13 means the limit switch tripped due to overheating. This guide covers every cause and fix — from clogged filters to cracked heat exchangers.
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Carrier 21 Error Code — Gas Heating Lockout Fix
Carrier error code 21 signals a gas heating lockout — the furnace failed to ignite after multiple attempts. Learn the exact steps to diagnose and reset it.
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Carrier 34 Error Code — Ignition Proving Failure Fix
Carrier error code 34 means ignition proving failure — the furnace tried to light but couldn't confirm a flame. Here's how to diagnose and fix it fast.
Recent Posts
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Burnham Boiler E1 Lockout Code Fix
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.
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True Refrigeration Error Codes — Complete Fix Guide
Complete guide to True Refrigeration error codes — E1 through E9 and beyond. Learn what each code means and how to fix the most common True fridge faults.
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Dixell XR60C P1 Error Code Fix — Sensor Fault
Dixell XR60C P1 error code means probe 1 (the main temperature sensor) has failed or is disconnected. This guide covers sensor testing, replacement, and controller setup.
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Fanuc Alarm 414 — Servo Axis Following Error Fix
Fanuc Alarm 414 means a servo axis exceeded its following error tolerance. This guide covers mechanical, encoder, and parameter causes with step-by-step fixes.