Gree GMV-S280W/A-X

GMV5 Home DC Inverter Multi VRF Units
283
heating
mode.
4.The
pressure
sensor is
faulty.
4.1The
low
pressure
sensor is
faulty.
20
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
5C, it is
exceptional.
Replace
the high
pressure
sensor.
4.2The
high
pressure
and low
pressure
sensors
are
connecte
d
reversely.
Connect the
stop valves of
the module
high- and
low-pressure
air pipes to
the high and
low pressure
gauges and
transform the
readings into
corresponding
temperatures.
Compare
them to the
high- and
low-temperatu
res tested by
Reconnect
the high-
and
low-pressu
re
sensors.