Gree /E-X, Service Manual

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GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
81
2.2.2. Introduction to Functions
2.2.2.1 List of functions
Function
Code
Function Name Function Meaning
Factory Settings Remark
Code Meaning
A2
Refrigerant
recovery
operation
Fully or partially recovers refrigerants in a
faulty module or IDU pipeline according to the
system pressure after automatic startup
during maintenance.
—— ——
It can only
be set.
A6
Unit
cooling/heating
function Sets the unit to cooling/heating,
single-cooling, single-heating, or air supply
mode for centralized management.
nA
Cooling/Heating
function
It can be
set and
queried.
A7
Outdoor silent
mode Sets different silent modes to meet users'
noise requirements.
00
No silent
settings
It can be
set and
queried.
A8
Aftersales
vacuuming
mode
Automatically
enables all electronic expansion valves and
electromagnetic valves during maintenance
to guarantee vacuum processing in all
pipelines.
—— ——
It can only
be set.
n0
Conservation
control 1
Automatically decreases the power
consumption of the unit according to
system operation parameters.
01
No automatic
conservation
settings It can be
set and
queried.
n3
Forcible
defrosting
operation
Forcibly enables ODU defrosting operation.
—— ——
It can only
be set.
n4
Conservation
control 2 Forcibly decreases the maximum power
consumption of the unit.
00
No capacity
output limitation
settings It can be
set and
queried.
n5
Indoor unit
project number
offset Prevents IDU project number conflicts
when different refrigerating systems are
controlled in a centralized manner.
—— ——
It can only
be set.
n6 Fault query
Queries historical fault information of the
ODU.
—— ——
It can only
be
queried.
n7
Parameter
query Queries real-time operation parameters of
the ODU.
—— ——
It can only
be
queried.
n8
Indoor unit
project number
query
Displays project numberes of all IDUs
through ODU operations.
—— ——
It can only
be
queried.
n9
Online IDU
quantity query
Displays the number of online IDUs.
—— ——
It can only
be
queried.
nb
Outdoor unit
bar code
function query
Queries the entire-unit bar code and
controller bar code of ODU.
—— ——
It can only
be
queried.
2.2.2.2 Description of Functions
(1) A2 Refrigerant recovery operation
This function partially recovers refrigerants in a faulty module or IDU pipeline during unit
maintenance. The refrigerant recovery volume of each basic module is as follows:
Model of Basic Module Maximum Refrigerant Recovery Volume (kg)
GMV-224WM/E-X 7.5
GMV-280WM/E1-X 7.5
GMV-280WM/E-X 7.5
GMV-335WM/E-X 8.7