A2 Pump-down (refrigerant recycle) mode

What the display is showing

A2 on the outdoor display marks pump-down mode, used to pull refrigerant from a faulty module or the indoor pipework into the outdoor unit. The liquid service valve must be closed. It is also a function code in the outdoor board menu, and it is only started by the service tech.

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 A2; the default 01 flashes. Choose the recycle mode with SW1 and SW2, confirm with SW3 (01 recycles the indoor unit pipework).
5. When the display asks for manual recycle, press SW3 on the master; the whole system stops at once and cannot restart for 10 minutes.

Models that show this code

3 models in Gree GMV6 Mini VRF

Other codes on the same units

• 06 Commissioning step 06: checking outdoor components
• 07 Commissioning step 07: checking indoor components
• A0 Waiting for commissioning (status)
• A3 Defrosting
• A4 Oil return
• A6 Cooling/heating mode of the whole system (menu)
• A7 Outdoor silence mode (menu)
• A8 Vacuum mode (menu)