Gree GC201808-III, Service Manual

Page: 111 / 362

GREE GMV5 HR HEAT RECOVERY UNITS
107
(2) When it is required to set the fan to emergency mode, set the DIP switch as follows:
Fan Emergency Operation DIP Switch (SA5_FAN-E)
DIP1 DIP2 Remark
0 0 No fan in emergency operation mode
1 0 Shielding the operation of 1# fan
0 1 Shielding the operation of 2# fan
Precautions:
①
When the DIP switch setting is not covered in the above scope, a DIP switch setting exception
fault may occur.
②
Only one fan can be set to emergency mode on a module.
③
The default fact
ory setting is “00”.
④
The system cannot continually run for more than 120 hours in fan emergency operation status.
Once 120 hours are exceeded, the entire unit will be forcibly stopped and the limited operation
code “Ad” is displayed on the IDU.
3.1.6 Outdoor Fan Static Pressure Setting DIP Switch (SA6_ESP_S)
The outdoor fan static pressure setting DIP switch (SA6_ESP_S) 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 (SA6_ESP_S)
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”.
Note that the DIP switch should be independently set on each module.
3.1.7 Reserved Function DIP Switch (SA7)
SA7 is the reserved function DIP switch and meaningless currently.
3.1.8 Master Unit Setting DIP Switch (SA8_MASTER-S)
The master unit setting DIP switch (SA8_MASTER-S) 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 (SA8_MASTER-S)
DIP1 DIP2 Remark
0 0 Master unit
1 0 Sub-module
Upon factory departure, all modules
are in “00” master unit status by default. When multiple
modules are connected in parallel, only one module retains the master unit status and other
modules are set to sub-module status. When a module is independently used, it uses the factory