Gree /E-X, Руководство по обслуживанию

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GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
136
Fault
code
Fault
Possible reasons
Solution
Primary reason Secondary reason Tertiary reason
Description
Confirmation
method
Description
Confirmation
method
Description
Confirmation
method
temperature
sensor
failure temperature
sensor or
main board.
7. The
ambient
temperature
exceeds the
scope of
temperature
required for
safe
operation.
——
The outdoor
ambient
temperature
exceeds
50°C.
Measure the
ambient
temperature.
—— ——
It is a normal
phenomenon
caused by
the
protection
function.
E2
Low exhaust
temperature
protection
1. The
ODU's
electronic
expansion
valve is not
working
properly.
When the
system is
working in the
heating mode
and the ODU's
electronic
expansion
valve is
opened to
100PLS, the
intake
temperature of
the
corresponding
liquid-air
separator is
more than 1°C
lower than the
low-pressure
saturation
temperature
and the
difference
between the
compressor's
exhaust
temperature
or cover
temperature
and the
high-pressure
temperature is
smaller than
10°C.
1.2 The
controlling
heating
electronic
expansion
of the main
board or the
electronic
expansion
valve of the
subcooler is
faulty. Reset the
ODU. Listen
to the sound
and touch the
tube to see if
the electronic
expansion
valve is reset.
If it is set, it is
normal.
Otherwise, it
is faulty.
1.2.1 The
control wire
of the
electronic
expansion
valve is not
connected
to the main
board.
Manual
check
Connect the
electronic
expansion
valve's
control wire
to the main
board.
1.2.2 The
control wire
that
connects the
electronic
expansion
valve to the
main board
is broken.
Manual
check
Repair or
replace the
control wire
of the
electronic
expansion
valve.
1.3 The
body of the
electronic
expansion
valve is not
working
properly.
Other
reasons
1.3.1
Affected by
impurities in
the system
——
Clean the
system and
clear the
impurities.
Replace the
body of the
electronic
expansion
valve.
1.3.2 The
body of the
valve is
faulty.
——
Replace the
body of the
electronic
expansion
valve.
2. The IDU's
electronic
expansion
valve is not
working
properly
When the
system is
working in the
cooling mode
and the ODU's
electronic
expansion
valve is
opened to
200PLS, the
2.1 The
controlling
of electronic
expansion
valve by
main board
of indoor
unit is
abnormal.
Reset the
IDU. Listen to
the sound and
touch the tube
to see if the
electronic
expansion
valve is reset.
If it is set, it is
normal.
2.1.1 The
control wire
of the
electronic
expansion
valve is not
connected
to the main
board.
Manual
check
Connect the
electronic
expansion
valve's
control wire
to the main
board.
2.1.2 The Manual Repair or