Gree GMV-280WM/E-X Service Manual

GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
135
Fault
code
Fault
Possible reasons
Solution
Primary reason
Secondary reason
Tertiary reason
Description
Confirmation
method
Description
Confirmation
method
Description
Confirmation
method
pipeline is
blocked.
temperature
rises and the
low pressure
is too low
(compared
with the
reference
value).
blocked.
flowing
direction of
refrigerant to
feel the
temperature
difference.
The
difference is
large or part
of the pipe is
frosting.
pipe.
3.2 The air
pipe is
blocked.
——
——
Replace and
solder the
pipe.
3.3 The pipe
that
connects
the IDU is
blocked.
Touch the pipe
along the
flowing
direction of
refrigerant to
feel the
temperature
difference.
The difference
is large or part
of the pipe is
frosting.
3.3.1 The
block is
caused by
solder.
Cut off the
pipe to see if
it is blocked.
Replace and
solder the
pipe.
3.3.2 The
pipeline is
blocked by
impurities.
Replace and
solder the
pipe.
4. Lacking
refrigerant
The system's
exhaust
temperature
rises and the
low pressure
is too low
(compared
with the
reference
value).
4.1 Not
enough
refrigerant
——
——
——
Inject
refrigerant as
required.
4.2
Refrigerant
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
refrigerant is
injected.
Stop the
whole system.
Test the
system's
balance
pressure 20
minutes later
and convert
the pressure
into the
corresponding
saturation
temperature.
Compare it
with the
outdoor
ambient
temperature. If
the difference
is larger than
5°C , it is
exceptional.
——
——
——
——
Discharge
existing
refrigerant
and inject
the correct
refrigerant
as required.
6. Exhaust
——
——
——
Replace the

Gree GMV-280WM/E-X Specifications

General

Brand	Gree
Model	GMV-280WM/E-X
Category	Air Conditioner
Language	English