Gree · Heat pump

Heat lamp 10 s on / 0.5 s off Defrosting (heating lamp pattern)

Normal status Gree SapphireGree Vireo GEN3

What the display is showing

During defrosting in heating mode, the heating lamp stays off for 0.5 s and then blinks for 10 s (the Sapphire manual) or is on for 10 s and off for 0.5 s (the Vireo compulsory-defrost text). The temperature display can show H1 at the same time. Normal operation: the compressor keeps running while the indoor fan stops.

Applies to: Gree Sapphire 9-24k (SAP..HP230V1A); Vireo GEN3 9-24k (3VIR..HP115/230V1A)

Models that show this code

10 models in Gree Sapphire, Gree Vireo GEN3

3VIR09HP115V1A3VIR09HP230V1A3VIR12HP115V1A3VIR12HP230V1A3VIR18HP230V1A3VIR24HP230V1ASAP09HP230V1AHSAP12HP230V1AHSAP18HP230V1AHSAP24HP230V1AH

Other codes on the same units

FH Compressor slowed - indoor coil anti-freeze
Fo Refrigerant recovery (pump-down) mode
HC PFC protection
I FEEL icon I FEEL (remote sensing) active
JF WiFi module fault
LC Compressor failed to start
LP Indoor and outdoor units do not match
Lock icon Remote keypad locked

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Source: Gree Sapphire 9-12k (SAP09-12HP230V1A) service.pdf - section 6.2 (10) Display, double-8 display; Gree Sapphire 18-24k (SAP18-24HP230V1A) service.pdf - section 6.2 (10) Display, double-8 display; Gree Vireo GEN3 9-24k (3VIR..HP115-230V1A) service GREE_VIREOGEN3_SERVICE_090921.pdf - section 6.2 (9) compulsory defrosting function. Summarized in our own words; check the original manual for your model.

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.