⚡Electrical Error Codes
Industrial electrical equipment fault codes. Variable frequency drive trips (OC, OV, UV, OL), UPS faults, switchgear alarms, transfer switch faults, and motor control center diagnostics.
271 guides
Section editor: Dana Kowalski · Certified Automation Professional (CAP)
Most Common Electrical Fixes
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Industrial Equipment Error Code Database: Master Reference
Master reference hub for industrial equipment error codes covering HVAC, refrigeration, VFDs, CNC controls, boilers, pumps, compressors, and commercial kitchen equipment.
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VFD Fault Code Lookup: All Brands
Master VFD fault code lookup guide covering ABB, Danfoss, Siemens, Schneider, Mitsubishi, Yaskawa, Allen-Bradley, and more.
Recent Electrical Guides
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Siemens G120 F01650 - Causes & Fix
Siemens G120 F01650 fault indicates a safety parameterization error. Learn how to diagnose and clear this Safety Integrated fault.
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Siemens G120 F01625 - Causes & Fix
Siemens G120 F01625 (sign-of-life error in safety data) means the Safety Integrated function detected a communication fault. Causes, steps, parts.
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Siemens G120 F01600 - Causes & Fix
Siemens G120 F01600 means Safety Integrated STOP A initiated. Learn the real causes, diagnostic steps, and parts for this safety fault.
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Siemens G120 A01590 Fault Code - Causes & Fix
A01590 is not a standard Siemens G120 code. Learn how to read the actual fault buffer, troubleshoot unknown alarms, and clear errors.
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Siemens G120 F01205 - Causes & Fix
Siemens G120 F01205 (CU: Time slice overflow) means the control unit can't finish processing in time. Fix steps and parts inside.
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Siemens G120 F01122 - Causes & Fix
Siemens G120 F01122 means frequency at the measuring probe input is too high. Learn the causes, diagnostic steps, and repair.
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Siemens G120 F01105 - Causes & Fix
Siemens G120 F01105 means insufficient memory on the Control Unit. Learn the causes, reset steps, and when to replace the CU.
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Siemens G120 F01044 - Causes & Fix
Siemens G120 fault F01044 means a CU descriptive data error. Learn what triggers this memory fault and how to restore valid data or replace failed components.
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Siemens G120 F01040 - Causes & Fix
Siemens G120 F01040 is an internal software or parameterization fault. Learn how to clear it with a power cycle and parameter save.
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Siemens G120 F01034 - Causes & Fix
F01034 on Siemens G120 means parameter reference value change failed. Learn causes, diagnostic steps, and when to replace the Control Unit.
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Siemens G120 F01033 - Causes & Fix
Siemens G120 fault F01033 means a reference parameter is set to 0.0 during unit switchover. Fix by setting p0304, p0305, or related parameters to valid nonzero values.
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Siemens G120 A01028 - Causes & Fix
Siemens G120 A01028 is a configuration error alarm caused by parameter and hardware mismatch. Learn causes, diagnostic steps, and parts.
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