GREE GMV5 HR HEAT RECOVERY UNITS
171
Fault
code
Fault
Possible reasons
Solution
Primary reason
Secondary reason
Tertiary reason
Description
Confirmation
method
Description
Confirmation
method
Description
Confirmation
method
4. The
pressure
sensor is
faulty.
——
4.1 The high
pressure
sensor is
faulty.
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 5°C
(
9
°F)
, it is
exceptional.
——
——
Replace the
high pressure
sensor.
4.2 The high
pressure and
low pressure
sensors are
connected
reversely.
Connect the stop
valve of the
module fluid pipe
and gas pipe to
the high and low
pressure gauges
and transform the
readings into
corresponding
temperatures.
Compare them to
the high- and
low-temperatures
tested by the
system. If the
difference is larger
than 5°C
(
9
°F)
, it is
exceptional.
——
——
Reconnect
the high- and
low-pressure
sensors.
5. The high
pressure
switch is
faulty.
E1 protection
is displayed
on the unit
when it is
powered on.
5.1 The high
pressure
switch is not
connected to
the main
board.
——
5.1.1 The
pressure
switch is
not
connected
to the main
board.
——
Reconnect it.
——
5.1.2 The
connect
wire
between
the
pressure
switch and
main board
is faulty.
——
Reconnect
them with the
wire.
5.2 The high
pressure
switch is
damaged.
——
——
——
Replace the
pressure
switch.
Summary of Contents for GC201808-III
Page 87: ...GREE GMV5 HR HEAT RECOVERY UNITS 83 1 External Connection for Individual Units ...
Page 92: ...GREE GMV5 HR HEAT RECOVERY UNITS 88 ...
Page 227: ...GREE GMV5 HR HEAT RECOVERY UNITS 223 Troubleshooting ...
Page 286: ...GREE GMV5 HR HEAT RECOVERY UNITS 282 Troubleshooting ...
Page 362: ...JF00302879 ...