Gree GMV-615WM/B-X - Page 155

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
152
3.4 The
outdoor
ambient
temperat
ure in
the
heating
mode is
lower
than
-7°C .
Measure
the
outdoor
ambient
temperat
ure.
——
——
It is a
normal
phenome
non.
4. Poor
airflow
distributi
on
design
——
4.1 The
air
intake
and
return
inlet of
the ODU
are too
close to
each
other,
affecting
the heat
exchang
e
performa
nce of
the unit.
Check
the
distance.
——
——
Re-desig
n the
airflow
distributio
n.
4.2 The
air
intake
and
return
inlet of
the IDU
are too
close to
each
other,
causing
poor
heat
exchang
e of the
unit.
Check
the
distance.
——
——
Re-desig
n the
airflow
distributio
n.
7. Not
enough
refrigera
nt
Other
reasons
Incorrect
quantity
of
refrigera
nt is
injected.
——
——
——
Check
the
necessar
y amount
of
refrigeran
t and
inject
refrigeran
t slowly
via the
stop
valve of
the