Gree GMV5E Series Service Manual page 148

GREE
Feedback
Exception
from user
to the high
pressure;
GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
Primary reason
Confirmation
Description
method
3. The
ambient
temperature
——
exceeds the
required
range.
4. Poor
airflow
——
distribution
design
Possible reasons
Secondary reason
Confirmation
Description
method
blocked. refrigerant to
feel the
temperature
difference. The
difference is
large or part of
the pipe is
frosting.
3.1 The
ambient
temperature
of the IDU Measure the
that works outdoor
in the ambient
cooling temperature.
mode is
higher than
32° C.
3.2 The
outdoor
ambient
Measure the
temperature
outdoor
in the
ambient
cooling
temperature.
mode is
higher than
40° C.
3.3 The
ambient
temperature
of the IDU Measure the
that works outdoor
in the ambient
heating temperature.
mode is
lower than
12° C.
3.4 The
outdoor
ambient
Measure the
temperature
outdoor
in the
ambient
heating
temperature.
mode is
lower than
-7° C.
4.1 The air
intake and
return inlet
of the ODU
are too Check the
close to distance.
each other,
affecting the
heat
exchange
144
Tertiary reason
Confirmation
Description
method
2.4.2 The
pipeline is
blocked by
impurities.
3.1.1 The
system has
——
worked for
less than 1
hour.
3.1.2 An
improper
——
system is
selected.
—— ——
3.3.1 The
system has
——
worked for
less than 2
hours.
3.3.2 An
improper
——
system is
selected.
—— ——
—— ——
Solution
Replace and
solder the pipe.
It is a normal
phenomenon.
Choose
another system
with larger
power.
It is a normal
phenomenon.
It is a normal
phenomenon.
Choose
another system
with larger
power.
It is a normal
phenomenon.
Re-design the
airflow
distribution.