Gree GMV5 Series Service Manual page 150

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
opened
as
required.
The
system's
exhaust
pressure
rises and
the low
pressure
is too low
2. The (compar
system ed with
pipeline the
is referenc
blocked. e value).
——
3. The
ambient
temperat
ure is
too low.
——
4. The
pressure
sensor
is faulty.
Touch the
pipe along
the flowing
direction of
refrigerant to
2.1. The feel the
system temperature
air difference.
pipeline The
is difference is
blocked. large.
Touch the
pipe along
the flowing
direction of
refrigerant to
feel the
temperature
difference.
The
2.2 The difference is
fluid large or part
pipe is of the pipe is
blocked. frosting.
Touch the
pipe along
the flowing
direction of
refrigerant to
feel the
temperature
2.4 The difference.
pipe that The
connect difference is
s the large or part
IDU is of the pipe is
blocked. frosting.
3.1 The
outdoor
ambient
temperat
ure is
lower
than
-25° C in Measure the
the outdoor
heating ambient
mode. temperature.
Stop the
whole
4.1 The system. Test
low the system's
pressure balance
sensor pressure 20
is faulty. minutes
147
2.1.1 The
block is
caused by
solder.
2.1.2 The Cut off
pipeline is the pipe
blocked by and
impurities. check it.
—— ——
2.4.1 The
block is
caused by
solder.
2.4.2 The Cut off
pipeline is the pipe
blocked by and
impurities. check it.
—— ——
—— ——
Replace
and
solder
the pipe.
Replace
and
solder
the pipe.
Replace
and
solder
the pipe.
Replace
and
solder
the pipe.
Replace
and
solder
the pipe.
It is a
normal
phenome
non
caused
by the
protectio
n
function.
Replace
the high
pressure
sensor.