Gree GMV-280WM/E-X Service Manual

GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
138
Fault
code
Fault
Possible reasons
Solution
Primary reason
Secondary reason
Tertiary reason
Description
Confirmation
method
Description
Confirmation
method
Description
Confirmation
method
is too low
(compared
with the
reference
value).
difference. The
difference is
large.
pipeline is
blocked by
impurities.
the pipe.
2.2 The fluid
pipe 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.
——
——
Replace and solder
the pipe.
2.4 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.
2.4.1 The
block is
caused by
solder.
Cut off the
pipe and
check it.
Replace and solder
the pipe.
2.4.2 The
pipeline is
blocked by
impurities.
Replace and solder
the pipe.
3. The
ambient
temperature
is too high.
——
3.1 In the
cooling
mode, the
outdoor
temperature
is over 50°C .
Measure the
outdoor ambient
temperature.
——
——
It is a normal
phenomenon caused
by the protection
function.
3.2 In the
heating
mode, the
actual
ambient
temperature
of the IDU's
return air is
over 30°C .
Measure the
temperature of
the unit's return
air.
——
——
It is a normal
phenomenon caused
by the protection
function.
4. The
pressure
sensor is
faulty.
——
4.1 The high
pressure
sensor is
faulty.
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.
——
——
Replace the high
pressure sensor.
4.2 The high
pressure and
low pressure
Connect the stop
valve of the
module fluid pipe
——
——
Reconnect the high-
and low-pressure
sensors.

Gree GMV-280WM/E-X Specifications

General

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