Gree /E-X, Руководство по обслуживанию

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GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
137
Fault
code
Fault
Possible reasons
Solution
Primary reason Secondary reason Tertiary reason
Description
Confirmation
method
Description
Confirmation
method
Description
Confirmation
method
exhaust
temperature of
the IDU's coil
is more than
1°C lower
than the
intake pipe's
temperature
and the
difference
between the
compressor's
exhaust
temperature
or cover
temperature
and the
high-pressure
temperature is
smaller than
10°C. Otherwise, it
is faulty. control wire
that
connecting
the
electronic
expansion
valve to the
main board
is broken. check replace the
control wire
of the
electronic
expansion
valve.
2.2 The
body of the
electronic
expansion
valve is not
working
properly.
Other
reasons
2.2.1
Affected by
impurities in
the system
——
Clean the
system and
clear the
impurities.
Replace the
body of the
electronic
expansion
valve.
2.2.2 The
valve body
is faulty.
——
Replace the
body of the
electronic
expansion
valve.
3. Exhaust
temperature
sensor
failure
—— —— —— —— ——
Replace the
temperature
sensor or
main board.
4. Too much
refrigerant Other
reasons
Incorrect
quantity of
refrigerant is
injected.
—— —— ——
Check the
necessary
amount of
refrigerant
and
discharge
the
unneeded
refrigerant
slowly via the
stop valve of
the fluid pipe.
2.2.2 Pressure exception
Fault
code
Fault
Possible reasons
Solution
Primary reason Secondary reason Tertiary reason
Description
Confirmation
method
Description
Confirmation
method
Description
Confirmation
method
E1
High
pressure
protection
1. The stop
valve of the
ODU is not
fully opened
as required.
—— —— —— ——
Manual
check Fully open the stop
valve.
2. The
system
pipeline is
blocked.
The system's
exhaust
pressure
rises and the
low pressure
2.1. The
system air
pipeline is
blocked.
Touch the pipe
along the flowing
direction of
refrigerant to feel
the temperature
2.1.1 The
block is
caused by
solder.
Cut off the
pipe and
check it.
Replace and solder
the pipe.
2.1.2 The Replace and solder