GREE Photovoltaic Direct-driven Inverter Multi VRF Units
102
low-noise operations. The nighttime automatic silent mode falls into nine categories:
Silent
Mode
Code
Starting the Silent Mode X Hours
after the Daytime Temperature
Stopping the Nighttime Silent
Mode after Continual Operations
Noise Degree
Mode 1 01 6 10
Low-noise mode
Mode 8 08 6 8
Low- and
NOTE:
The highest daytime temperature is generally in 13:00-15:00.
Recommendation: Model 1.
For the forcible silent mode, the system runs in low-noise mode no matter in the daytime or
nighttime. The forcible silent mode falls in three categories:
Silent Mode Code Noise Degree
Mode 10 10 Low-noise mode
Mode 11 11 Low- and medium-noise mode
Mode 12 12 superlow-noise mode
NOTE:
The factory setting is “00”.
After silent mode is set, unit’s cooling and heating capacity will be lowered correspondingly. Please be
noted.
4) A8 Aftersales vacuuming mode
This function ensures the vacuum degree of the entire system during maintenance to prevent
operation functions of dead zones. Expansion valves and electromagnetic valves of the unit will be
enabled after this function is set.
5) n0 Conservation control 1
System conservation is set when conservation operations are required. The default factory setting is
capacity priority control mode. The system capacity may fall off after the conservation mode is set.
Conservation control – invalid (factory settings)
Conservation control - valid
6) n3 Forcible defrosting operation
This function is set when forcible defrosting is required for the unit during maintenance. After this
function is enabled, the system automatically quits based on quitting conditions and then automatically
runs based on system conditions.
7) n4 Conservation control 2
The highest capacity output limitation is set when users require forcibly limiting the system power
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