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GREE GMV5 HR HEAT RECOVERY UNITS
175
Fault
code
Fault
Possible reasons
Solution
Primary reason
Secondary reason
Tertiary reason
Description
Confirmation
method
Description
Confirmation
method
Description
Confirmation
method
E3
Low-pressure
Protection
4. The
pressure
sensor is
faulty.
——
4.2 The high
pressure
and low
pressure
sensors are
connected
reversely.
Connect the
stop valves of
the module
high- and
low-pressure
gas pipes to the
high and low
pressure
gauges and
transform the
readings into
corresponding
temperatures.
Compare them
to the high- and
low-temperature
s 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 fan
is not
working
properly.
A. The IDU's
fan does not
work in the
cooling
mode. B.
The ODU's
fan does not
work in the
heating
mode.
5.1 The
IDU's fan is
faulty.
Manual check
6.1.1 The
power cable
connecting
the motor
and main
board is
loose.
Manual
check
Reconnect
the motor
with the
power cable.
6.1.2 The
electric
capacity is
not
connected
or is
damaged.
Manual
check
Connect or
replace the
electric
capacity.
6.1.3 The
motor is
damaged.
Other
reasons
Replace the
motor.
5.2 The
ODU's fan is
faulty.
Manual check
6.2.1 The
fan motor is
not properly
connected
with the
control
board of the
motor.
Manual
check
Reconnect it
properly.
Содержание GC201808-III
Страница 36: ...GREE GMV5 HR HEAT RECOVERY UNITS 32 Circuit diagram of GMV Q144WM B1 F U Circuit diagram of GMV Q168WM B1 F U ...
Страница 87: ...GREE GMV5 HR HEAT RECOVERY UNITS 83 1 External Connection for Individual Units ...
Страница 92: ...GREE GMV5 HR HEAT RECOVERY UNITS 88 ...
Страница 227: ...GREE GMV5 HR HEAT RECOVERY UNITS 223 Troubleshooting ...
Страница 286: ...GREE GMV5 HR HEAT RECOVERY UNITS 282 Troubleshooting ...
Страница 314: ...GREE GMV5 HR HEAT RECOVERY UNITS 310 4 Loosen the screws on the compressor drive as shown in the figure below ...
Страница 362: ...JF00302879 ...