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Goodman GSZ140491 Error Codes

Updated · by Aurora Star Tech Inc.

Goodman GSZ140491 error codes and diagnostic codes (also listed as GSZ140491AA). The GSZ140491 is a Goodman heat pump in the Goodman/Amana R-410A GSZ/ASZ/DSZ (ANZ/SSZ/VSZ) series.

Homeowner with a heat pump problem? Call (647) 657-2977 or book a service call — licensed technicians across Vaughan and the GTA.

Goodman GSZ140491 error codes list

CodeMeaningSeverity
CoreSense 1Yellow 1 flash - long run time (low side)Medium
CoreSense 2Pressure trip - yellow 2 flashes (red 2 = lockout)High
CoreSense 3Short cycling / pressure switch cycling - yellow 3 (red 3 = lockout)Medium
CoreSense 4Locked rotor - yellow 4 (red 4 = lockout)Critical
CoreSense 5Moderate run trip - yellow 5 (red 5 = lockout)High
CoreSense 9Red 9 flashes - PROT output overcurrentHigh
CoreSense solid redSolid red TRIP - call present but compressor not runningHigh

Troubleshooting the GSZ140491

All Goodman Heat Pump error codes →

Homeowner help: AC Running But Not Cooling: What to Check · Heat Pump Not Heating or Blowing Cold Air

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

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