Gree Ultra Heat GMV-VQ72W/A-F, Service Manual

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Ultra Heat GMV VRF Technical Service Manual_Heat Recovery Serial COMMISSIONING OPERATION
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3.1.1 Outdoor silent mode setting DIP switch (S1)
The outdoor silent mode setting DIP switch (S1) is used to set noise grades at the place needing
low noise, such as hospital, hotel at night, no matter in the daytime or nighttime. The silent modes of unit
include standard mode, low noise mode, medium noise mode, superlow noise mode. The setting
methods are as follows:
Outdoor Silent Mode Setting DIP Switch (S1)
DIP1 DIP2 Noise Range
0 0 Standard mode
1 0 Low noise mode
0 1 medium noise mode
1 1 superlow noise mode
The default factory setting is
―00‖.
On the DIP switch,
―ON‖ indicates ―0‖ status and the opposite direction indicates "1‖ status.
Note that the DIP switch should be independently set on each module.

After silent mode is set, unit
’
s cooling and heating capacity will be lowered correspondingly. Please be
noted.
3.1.2 Outdoor fan static pressure setting DIP switch (S2)
The outdoor fan static pressure setting DIP switch (S2) is used in special scenarios such as the unit
installation equipment room. In scenarios where air ducts are required to be connected, zero static
pressure (0 Pa), low static pressure (30 Pa), medium static pressure (50 Pa), and high static pressure
(82 Pa) can be set according to the design of air ducts. The setting methods are as follows:
Outdoor Fan Static Pressure Setting DIP Switch (S2)
DIP1 DIP2 Static Pressure Range
0 0 0 Pa/0in.W.G.
1 0 30 Pa/0.12in.W.G.
0 1 50 Pa/0.2in.W.G.
1 1 82 Pa/0.328in.W.G.
The default factory setting is
―00‖.
On the DIP switch,
―ON‖ indicates ‖0‖ status and the opposite direction indicates "1‖ status.
Note that the DIP switch should be independently set on each module.
3.1.3 Centralized control address DIP switch (S3)
The centralized control address DIP switch (S3) indicates the centralized control address required