Gree GMV5 Series - Outdoor Unit and Branch Pipe Sizing

GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
130
db
On
05
On
C3
On
The system detects
communication failure between
master unit and inverter fan
driver.
db
On
05
On
CH
On
The rated capacity ratio is
over-high between IDUs and
ODUs.
db
On
05
On
CL
On
The rated capacity ratio is
over-low between IDUs and
ODUs.
db
On
05
On
OC
On
The system completes detection
and automatically enters the next
step.
06_Internal
component
detection for
basic modules
db
On
06
On
Corres
pondin
g fault
code
On
The system detects component
failure of ODU.
db
On
06
On
OC
On
The system detects that no ODU
component fails and automatically
enters the next step.
07_Component
detection for
IDU
db
On
07
On
XXXX/
Corres
pondin
g fault
code
On
The system detects component
failure of IDU. "XXXX" indicates
the project number of the faulty
IDU. The corresponding fault
code is displayed after three
seconds. For example, if a d5
fault occurs on IDU 100, LED3 will
circularly display "01", "00" (two
seconds later), and "d5" (two
seconds later).
db
On
07
On
OC
On
The system detects that no IDU
component fails and automatically
enters the next step.
08_Compresso
r preheating
confirmation
db
On
08
On
U0
On
The system gives a prompt if the
compressor preheating period is
less than eight hours.
db
On
08
On
OC
On
The system detects that the
compressor preheating period is
more than eight hours and
automatically enters the next
step.
09_Pre-startup
refrigerant
detection
db
On
09
On
U4
On
The system detects insufficient
refrigerants and stops to balance
the pressure lower than 0.3 MPa.
db
On
09
On
OC
On
The system detects that
refrigerants are normal and
automatically enters the next
step.
10_Pre-startup
ODU valve
status detection
db
On
10
On
ON
On
Outdoor unit valves are being
opened.
db
On
10
On
U6
On
Outdoor unit valves have not
been completely opened.
db
On
10
On
OC
On
Outdoor unit valves have been
properly opened.
11_Manually
calculated
refrigerant
perfusion status
db
On
11
On
AE
On
The refrigerant perfusion status is
manually calculated (appended
refrigerants must be accurately
calculated).
12_Unit
commissioning
startup
confirmation
db
On
12
On
AP
Blinkin
g
The system waits for a unit
commissioning startup command.
db
On
12
On
AE
On
The unit is set to
manually-calculated refrigerant
perfusion commissioning
operation status.