HVACopedia

Gree · Heat pump

H4 System abnormal (overload)

Medium severity Gree Sapphire

What the control is telling you

The system tripped on overload / high coil temperature.

Applies to: Gree Sapphire 9-24k (SAP..HP230V1A)

Likely causes

  • High ambient
  • Poor airflow
  • Refrigerant flow problem

Test and repair steps

  1. Clean coils and check fans.
  2. Check the charge and look for restrictions.

Models that show this code

4 models in Gree Sapphire

SAP09HP230V1AHSAP12HP230V1AHSAP18HP230V1AHSAP24HP230V1AH

Other codes on the same units

  • F6 Compressor slowed - overload
  • F8 Compressor slowed - high current
  • F9 Compressor slowed - high discharge temperature
  • H0 Compressor slowed - high indoor coil temp in heating
  • H3 Compressor overload protection
  • H5 IPM (inverter module) protection
  • H6 Indoor fan motor not running / no feedback
  • H7 Compressor lost synchronism

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Source: Gree Sapphire 9-12k (SAP09-12HP230V1A) service.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting; Gree Sapphire 18-24k (SAP18-24HP230V1A) service.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.