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Gree Error Code F9: Compressor slowed – high discharge temperature (Heat Pump)

Updated · by Aurora Star Tech Inc.

Gree error code F9 on a heat pump means: Compressor slowed - high discharge temperature. It is also called Gree diagnostic code F9.

Low severityHeat PumpGree Sapphire · Gree Livo GEN4 · Gree Vireo GEN3

Homeowner? What Gree code F9 means for you

Usually minor Your heat pump is reporting: Compressor slowed - high discharge temperature. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.

Safe things you can check yourself

  • Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
  • Check both breakers and the outdoor disconnect box beside the outdoor unit; all should be ON.
  • Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
  • In winter, keep snow and ice off and away from the outdoor unit. A short defrost cycle with steam is normal.
  • Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Gree error code F9 mean?

Normal operation continues with compressor speed cut because the discharge line is hot.

Applies to: Gree Sapphire 9-24k (SAP..HP230V1A), Livo GEN4 30-36k (4LIV..HP230V1A), Vireo GEN3 9-24k (3VIR..HP115/230V1A)

Common causes of Gree code F9

  • Overload or high temperature
  • Low refrigerant
  • EEV fault
Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

Gree models that use code F9

3VIR09HP115V1A3VIR09HP230V1A3VIR12HP115V1A3VIR12HP230V1A3VIR18HP230V1A3VIR24HP230V1A4LIV30HP230V1AH4LIV36HP230V1AHSAP09HP230V1AHSAP12HP230V1AHSAP18HP230V1AHSAP24HP230V1AH

Other Gree Heat Pump codes

CodeMeaning
F2Indoor coil sensor open or shorted
F3Outdoor ambient sensor open or shorted
F4Outdoor coil (condenser middle) sensor open or shorted
F5Compressor discharge sensor open or shorted
F6Compressor slowed - overload
F8Compressor slowed - high current
FHCompressor slowed - indoor coil anti-freeze
FoRefrigerant recovery (pump-down) mode
FPOutdoor DC fan motor fault
H0Compressor slowed - high indoor coil temp in heating
H1Defrost or oil return (status)
H3Compressor overload protection

All Gree Heat Pump error codes →

Gree code F9: homeowner questions

What does Gree code F9 mean?

Compressor slowed - high discharge temperature. Normal operation continues with compressor speed cut because the discharge line is hot.

Is it safe to keep using my heat pump with code F9?

Usually yes. Code F9 is normally minor, but if it keeps coming back have it checked.

Can I reset Gree code F9 myself?

You can try one reset (power off for 30 seconds, then on). If Gree code F9 comes back, the cause is still there and a licensed technician should check it.

Who can fix Gree code F9 near me?

Aurora Star Tech Inc. repairs Gree heat pumps in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

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

Troubleshooting guides

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; Gree Livo GEN4 30-36k (4LIV30-36HP230V1A) service.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting; Gree Vireo GEN3 9-24k (3VIR..HP115-230V1A) service GREE_VIREOGEN3_SERVICE_090921.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting. Written in our own words as a summary; always check the original manual.

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.

Emergency HVAC Service

647-657-2977