Gree CN851W1000, Руководство по обслуживанию

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DC Inverter Multi
VRF Service Manual
161
5.2.2
Abnormal System Pressure
S/N
Class
T
rouble
Possible Cause
T
roubleshooting
First-level reason
Second-level reason
Third-level reason
Description of Cause
Method of
Confirmation
Description of Cause
Method of Confirmation
Description
of Cause
Method of
Confirmation
1
Abnormal
system
pressure
Dischar
ge
pressure
abnormally
increases.
Not totally opene
d
1. Cut-of
f valve of outdoor unit
is not opened to the position,
which can allow maximum flow
.
——
——
——
——
Manually check
Open the cut-of
f
valve to the position
which can allow
maximum flow
2
2.Pipeline of the system is blocked
Impurity
Dischar
ge temp
of the system
abnormally
increases and the
low pressure is
too low(Judge
according
to reference
standard).
2.1Ggas pipe of the
system is blocked.
Along the flow direction
of refrigerants, the
dif
ference of local
temperatures is great.
2.1.1 The
welding
causes block.
Cut the pipe
to check.
Replace and weld
pipeline again.
3
2.1.2 There
are too many
impurities inside
the pipeline.
Replace and weld
pipeline again.
4
2.2Lliquid pipe
of the system
is blocked.
Along the flow direction
of refrigerants, the
dif
ference of local
temperatures is great
or there is frost on
partial pipe.
——
——
Replace and weld
pipeline again.
5
2.4 The
connecting
pipe of indoor
unit is blocked.
Along the flow direction
of refrigerants, the
dif
ference of local
temperatures is great
or there is frost on
partial pipe.
2.4.1
The welding
causes block.
Cut the pipe
to check.
Replace and weld
pipeline again.
6
2.4.2
There
are too many
impurities inside
the pipeline.
Replace and weld
pipeline again.