Gree Error Code LA: Group control: indoor series mismatch (Heat Pump)

Updated October 13, 2026 · by Aurora Star Tech Inc.

Gree error code LA on a heat pump means: Group control: indoor series mismatch. It is also called Gree diagnostic code LA.

Low severityHeat PumpGree GMV6 Mini VRF

Homeowner? What Gree code LA means for you

Usually minor Your heat pump is reporting: Group control: indoor series mismatch. 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) 657-2977 Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Gree error code LA mean?

One controller is set up for indoor units of different series.

Applies to: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V..WL/C-T(U))

Common causes of Gree code LA

Controller setup

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 LA

GMV-V36WL/C-T(U)GMV-V48WL/C-T(U)GMV-V60WL/C-T(U)

Other Gree Heat Pump codes

Code	Meaning
L4	Wired controller power fault
L5	Indoor freeze protection
L6	Mode conflict (24 V adapter systems)
L7	No master indoor unit
L8	Indoor power insufficient
L9	Power protection
Lb	Group control: units from different systems
LC	Compressor failed to start
Ld	Compressor phase loss
LJ	Indoor function DIP setting wrong
LP	Indoor and outdoor units do not match
LU	PG fan motor zero-crossing fault

All Gree Heat Pump error codes →

Gree code LA: homeowner questions

What does Gree code LA mean?

Group control: indoor series mismatch. One controller is set up for indoor units of different series.

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

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

Can I reset Gree code LA myself?

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

Who can fix Gree code LA 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

Compressor will not run - Gree ductless Gree · Heat Pump
Louver will not swing - Gree ductless Gree · Heat Pump
Noise or vibration - Gree ductless Gree · Heat Pump
Outdoor fan will not run - Gree ductless Gree · Heat Pump
Unit will not start - Gree ductless Gree · Heat Pump
Water leaking from indoor unit - Gree ductless Gree · Heat Pump
Weak cooling or heating - Gree ductless Gree · Heat Pump

Source: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V36-48-60WL-C-T(U)) service.pdf - section Chapter 3 Faults, 4.1 Error Indication. 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.