Gree Heat Pump: Cap the maximum output (function n4)
Cap the maximum output (function n4) on a Gree heat pump: 10 is 100 percent (default), 09 is 90 percent, 08 is 80 percent.
Applies to: Gree GMV6 Ultra Heat Mini VRF 36-60k (GMV-V..WL/C-T(U))
How to fix cap the maximum output (function n4): 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 n4, pick 10, 09 or 08 with SW1 and SW2, confirm with SW3.
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 4.2.3.8 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.