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Gree · Heat pump

A6 Cooling/heating mode of the whole system (menu)

Menu / mode display Gree GMV6 Mini VRF

What the display is showing

A6 is the outdoor-board menu entry for limiting the whole system to heating only, cooling only, fan only or cooling and heating. The current choice shows as nA, nC, nF or nH. Factory setting is nA. The setting survives a power cut.

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

What to do

  1. Open the function menu power the system, then hold SW1 on the master outdoor board for over 5 seconds.
  2. Pick the function with SW1 (up) and SW2 (down), confirm with SW3.
  3. SW4 steps back or exits; with no key pressed for 5 minutes the board leaves the menu by itself.
  4. Select A6, then pick nA, nC, nH or nF with SW1 and SW2 and confirm with SW3 (the value goes steady).

Models that show this code

3 models in Gree GMV6 Mini VRF

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

Other codes on the same units

  • A0 Waiting for commissioning (status)
  • A2 Pump-down (refrigerant recycle) mode
  • A3 Defrosting
  • A4 Oil return
  • A7 Outdoor silence mode (menu)
  • A8 Vacuum mode (menu)
  • A9 Set back function
  • b1 Outdoor ambient sensor open or shorted (15K)

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Source: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V36-48-60WL-C-T(U)) service.pdf - section 4.2.3.3 and Chapter 3 Faults, 4.1 Error Indication. 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.