Gree Ultra Heat GMV-V72W/A-F, Service Manual

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Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION
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(1) The DIP switch must be set on the master unit. Otherwise, the setting is invalid.
(2) On the same refrigerating system, the centralized control address DIP switch (S3) on a
non-master unit is invalid, and it is unnecessary to change the settings.
(3) The centralized control address DIP switch (S3) on the master unit of a refrigerating system
must be set to
―0000X‖, and this system is the master system.
(4) The centralized control address DIP switch (S3) on the master unit of other refrigerating
systems must be set as follows:
S3
Address No.
DIP1 DIP2 DIP3 DIP4 DIP5
0 0 0 0
×
1
1 0 0 0
×
2
0 1 0 0
×
3
1 1 0 0
×
4
0 0 1 0
×
5
1 0 1 0
×
6
0 1 1 0
×
7
1 1 1 0
×
8
0 0 0 1
×
9
1 0 0 1
×
10
0 1 0 1
×
11
1 1 0 1
×
12
0 0 1 1
×
13
1 0 1 1
×
14
0 1 1 1
×
15
1 1 1 1
×
16
(5) On the DIP switch,
―ON‖ indicates ―0‖ status and the opposite direction indicates "1‖ status. ― × ‖
indicates invalid status.
(6) The centralized control address DIP switch (S3) cannot be the same between different
refrigerating systems. Otherwise, address conflicts may occur and the unit cannot run properly.
3.1.4 Reserved function DIP switch (S4, S5, S6)
S4, S5, S6 are the reserved function DIP switch and meaningless currently.
3.1.5 Master unit setting DIP switch (S7)
The master unit setting DIP switch (S7) defines module management of a system. A master unit
must be set, and only one master unit can be set in each refrigerating system (in power-off status). The
setting methods are as follows:
Master Unit Setting DIP Switch (S7)
DIP1 DIP2 Remark
0 0 Master unit
Upon factory departure, all modules are in
―00‖ master unit status by default.