GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
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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.
Once 48 hours are exceeded, the entire unit will be forcibly stopped and the limited operation
code “Ad” is displayed on the IDU.
I. 1#-6# compressors are defined from right to left facing the front of the unit.
⑤ Fan Emergency Operation DIP Switch (SA5_FAN-E)
The fan emergency operation DIP switch (SA5_FAN-E) is used for aftersales emergency settings
when an exception occurs on a dual-module fan. It can shield the operation of a fan in a short time and
guarantee the emergency operation of the system.
1) Fan positions
2) When it is required to set the fan to emergency mode, set the DIP switch as follows:
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