Gree GMV5 Series Service Manual page 151

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
A. The
IDU's fan
does not
work in
the
cooling
mode. B.
The
ODU's
6. The fan does
fan is not work
not in the
working heating
properly. mode.
later and
convert the
pressure
into the
correspondi
ng
saturation
temperature.
Compare it
with the
outdoor
ambient
temperature.
If the
difference is
larger than
5° C , it is
exceptional.
Connect the
stop valves
of the
module
high- and
low-pressur
e air pipes to
the high and
low pressure
gauges and
transform
the readings
into
correspondi
ng
temperature
s. Compare
4.2 The them to the
high high- and
pressure low-tempera
and low tures tested
pressure by the
sensors system. If
are the
connect difference is
ed larger than
reversel 5° C , it is
y. exceptional.
6.1 The
IDU's
fan is Manual
faulty. check
148
—— ——
6.1.1 The
power
cable
connecting
the motor
and main
board is Manual
loose. check
6.1.2 The
electric
capacity is
not
connected Manual
or is check
Reconne
ct the
high- and
low-press
ure
sensors.
Reconne
ct the
motor
with the
power
cable.
Connect
or
replace
the
electric
capacity.