Gree GMV5E Series Service Manual page 141

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