Gree GMV-224WM/B-X, Service Manual

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GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
81
Precautions:
A. When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault
may occur.
B. Only one compressor can be set to emergency mode on a module.
C. The compressor emergency operation mode is valid only in a single-module multi-compressor
system.
D.
The default factory setting is ―00000‖.
E. The system cannot continually run for more than 24 hours in compressor emergency operation status.
Once 24 hours are exceeded, the entire unit will be forcibly stopped and the limited operation code ―Ad‖
is displayed on the IDU.
F. 1#-6# compressors are defined from right to left facing the front of the unit.
4. 1# Compressor/Module Emergency Operation DIP Switch (SA4_I/M-E)
The 1# compressor/module emergency operation DIP switch (SA4_I/M-E) is used for aftersales
emergency settings when an exception occurs on the 1# compressor/module. It can shield the operation
of the abnormal compressor/module in a short time and guarantee the emergency operation of other
compressors.
When it is required to set the 1# compressor/module to emergency mode, set the DIP switch as follows:
1# Compressor/Module Emergency Operation
DIP Switch (SA4_I/M-E)
DIP1 DIP2 Remark
0 0
Not shielding the operation of 1#
compressor/module
1 0
Shielding the operation of 1#
compressor
0 1
Shielding the operation of the
module
Precautions:
A. When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault
may occur.
B. Only one compressor can be set to emergency mode on a module.
Subsequent to emergency
operation, valves of shielded outdoor unit, including the gas pipe, liquid pipe and oil balance pipe, need
to be closed tight by hand.
C. The compressor emergency operation mode is valid only in a single-module multi-compressor
system.
D. The module emergency operation mode is valid only in a system with more than two modules
connected in parallel.
E. Only one module can be set to emergency operation mode in each system.
F. The default factory setting is ―00‖.
G. The system cannot continually run for more than 24 hours in compressor emergency operation status.
Once 24 hours are exceeded, the entire unit will be forcibly stopped and the limited operation code ―Ad‖
is displayed on the IDU.
H. The system cannot continually run for more than 48 hours in module emergency operation status.