Gree Heat Pump: Start pump-down (refrigerant recycle) mode, function A2
Start pump-down (refrigerant recycle) mode, function A2 on a Gree heat pump: Pull refrigerant from a faulty module or the indoor pipework into the outdoor unit; the liquid service valve must be closed.
Applies to: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V..WL/C-T(U))
How to fix start pump-down (refrigerant recycle) mode, function a2: step by step
- Open the function menu: power the system, then hold SW1 on the master outdoor board for over 5 seconds.
- Pick the function with SW1 (up) and SW2 (down), confirm with SW3.
- SW4 steps back or exits; with no key pressed for 5 minutes the board leaves the menu by itself.
- Select A2; the default 01 flashes. Choose the recycle mode with SW1 and SW2, confirm with SW3 (01 recycles the indoor unit pipework).
- When the display asks for manual recycle, press SW3 on the master; the whole system stops at once and cannot restart for 10 minutes.
If the unit shows an error code, look it up: Gree Heat Pump codes
Models
GMV-V36WL/C-T(U)GMV-V48WL/C-T(U)GMV-V60WL/C-T(U)
Source: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V36-48-60WL-C-T(U)) service.pdf - section 4.2.3.1 and 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.