Gree · Heat pump

AL X-fan operation

Normal status Gree Multi21+

What the display is showing

AL on the Multi21+ indoor display means the X-fan function is running, so the indoor fan keeps going after the unit is switched off to dry the coil. It is an operation status and not a fault.

Applies to: Multi21+ 18-24k multi-zone (MULTI..HP230V1CO)

Models that show this code

2 models in Gree Multi21+

MULTI18HP230V1COMULTI24HP230V1CO

Other codes on the same units

P7 Inverter module temperature sensor fault
P8 Inverter module overheated
U1 Compressor phase current sensing fault
U7 Reversing (4-way) valve fault
U8 Indoor zero-crossing signal fault
EE EEPROM / memory chip fault
Fo Refrigerant recovery (pump-down) mode
HC PFC protection

Save it for the next call

Star this code in the HVACopedia app and keep the whole library on your phone for jobs with no signal.

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Source: Gree Multi21+ multi-zone 18-24k (MULTI18-24HP230V1CO) service.pdf - section 9.1 Malfunction status sheet. 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.