Airwell AWAU-YDV1010-H13, Руководство по обслуживанию

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146
Failure code
Outdoor
digital
display tube:
40-0, 1
Indoor wired
controller:
28
Indoor unit LED status
LED5 Failure description:
High pressure too high failure
20 times
Outdoor unit LED status
LED1 LED2
Normal Normal
1. Model Diagnosis and troubleshooting
Flow Logic III series
Diagnosis Troubleshooting
2. Abnormity detection method
◆
Check if the high pressure
acquired by the PCB is
correct;
◆
Check if the voltage
characteristic corresponding
to the pressure sensor is
correct;
◆
Check if the high pressure
side of the system is blocked;
◆
Check the outdoor fan
for normal operation when
cooling.
3. Abnormity confirmation
conditions
The high pressure switch is
turned off for 2s.
4. Possible causes
◆
The pressure sensor is
broken;
◆
The pressure sensor signal
acquired by the PCB is incorrect;
◆
The high pressure side of the
unit is blocked;
◆
The outdoor fan stops
operating when cooling;
◆
The refrigerant is excessive;
◆
It is out of the operating range
of units.
Check if the voltage characteristic of the
corresponding pressure sensor is normal.
Check if the pressure sensor
signal acquisition loop of the
computer board is normal.
Check if the high pressure reaches
4.0MPa upon failure alarm.
Check if the high pressure stop
valve is turned on or the high
pressure side is blocked.
Check the outdoor fan for normal
operation when cooling.
Check if the refrigerant is excessive.
Check if the allowed operation
range is exceeded
Replace it correctly by after-
sales personnel on site.
Replace it correctly by after-
sales personnel on site.
Rectify it correctly by after-sales
personnel on site.
Rectify it correctly by after-sales
personnel on site.
Notify the user to use it within the
operating range of units by after-
sales personnel.
Y
N
Y
Y
Y
N
N
Y
Y
N
Y
Rectify it correctly by after-sales
personnel on site.
Note: confirm if the systerm
including the noncondensable gas
N