Gree GMV-S280W/A-X

GMV5 Home DC Inverter Multi VRF Units
273
4.Lacking
refrigeran
t
The
system's
exhaust
temperatur
e rises and
the low
pressure is
too low
(compared
with the
reference
value).
4.1Not
enough
refrigerant
Inject
refrigerant
as
required.
4.2Refriger
ant pipe
leakage
Use the
refrigerant
leak
detector to
detect the
leak along
the pipe.
Stop the
leak.
Pump out
air and
inject
refrigerant
again.
5.Wrong
refrigeran
t is
injected.
20
Stop the
whole
system.
Test the
system's
balance
pressure 20
minutes
later and
convert the
pressure
into the
correspondi
ng
saturation
temperatur
e. Compare
it with the
outdoor
ambient
temperatur
e. If the
difference
is larger
than 5°C, it
is
exceptional
.
——
——
——
——
Discharge
existing
refrigerant
and inject
the correct
refrigerant
as
required.
6.Exhaust
temperatu
re sensor
failure
Replace
the
temperatur
e sensor
or main