Gree MULTI VRF SYSTEM II GMV-120WL/A-T User Manual

55
DC Inverter Multi VRF System II
Service Manual
16_Debugging
operation for
heating
db ON 16 ON AH ON
Debugging under heating mode.
If there’s no malfunction after the
compressor operates for 30min, it
will enter into process 17 to nish
debugging; Or short press SW7 button
on main board during operation process
to conrm the completion of debugginig.
After conrmation, it will enter into
process 17 to nished debugging
compulsively. If there’s malfunction
during operation process, the display is
as below:
db ON 16 ON
Correspoding error
code
ON
There’s malfunction during debugging
operation under heating mode. The unit
will enter into the next step determination
after elimanted all malfunctions. If the
outdoor unit is de-energized during
troubleshooting process, it will enter
into process 17 to nish debugging
automatically after energization.
17_ Finished
status of
debugging
01 ON OFF ON OFF ON
Debugging is nished for the complete
unit. The system is at standby status.
1.3 Parameters reference value for the normal operation of unit
No. Debugging project Parameters name Unit Reference value
1
Paramers of system
Parameters of
outdoor unit
Outdoor ambient
temperature
℃
——
2
Discharge
temperature of
compressor
℃
●After compressor is started up, normal discharge
temperature for cooling is 70~105
℃
, which is
10
℃
above more than the high pressure saturation
temperature.
●The normal temperature for heating is 65
℃
~90
℃
,
which is 10
℃
above more than the high pressure
saturation temperature.
3
Defrosting
temperature
℃
●During cooling operation, defrosting temperature is
4~10
℃
lower than the high pressure value of system;
●During heating operation, defrosting temperature is
almost equal to the low pressure value of system (the
disffrence is withing 2
℃
).
4
High pressure of
system
℃
●Under cooling mode, the normal high pressure value
is 20
℃～
55
℃
. According to the change of ambine
temperature and operation capacity of system, the
high pressure value of system is 10
℃～
30
℃
higher
than the ambient temperature. The higher the ambient
temperature, the temperature difference is small;
Under cooling operation at the ambient temperature
of 25~35
℃
, the high pressure value for the system is
44~53
℃
;
●The unit will operate at heating mode when the
ambient temperature is above -5
℃
. The high pressure
value for the system is 40~52
℃
. When the ambient
temperature is low and the indoor unit is started up
frequently, the high pressure value will be a little lower.

Gree MULTI VRF SYSTEM II GMV-120WL/A-T Specifications

General

Brand	Gree
Model	MULTI VRF SYSTEM II GMV-120WL/A-T
Category	Inverter
Language	English