Airwell AWAU-YDV1010-H13, Service Manual

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174
Failure code
Outdoor
digital display
tube: 555.0, 1,
2, 3
Indoor wired
controller: /
Indoor unit LED status
LED5 Failure description:
Overload standby/ heating standby at 26
℃
/
low pressure (lack of refrigerant) standby/
cooling standby at 54°C
20 times
Outdoor unit LED status
LED1 LED2
Normal Normal
1. Model Failure diagnosis and troubleshooting
Flow Logic III series
Diagnosis Troubleshooting
2. Abnormity detection method
◆
Confirm the dip switch
setting is correct and the
running limited condition is
reached
◆
In case of lack of refrigerant
standby, check the system for
air leakage and if the detection
value of pressure sensor is
correct.
3. Abnormity confirmation
conditions
Power on is not allowed
in following situations: the
capacity is above 130%
or below 50%; heating
when the outdoor ambient
temperature is above 26°C
upon system standby; start
cooling Ps<0.23Mpa or heating
Ps<0.12Mpa upon system
standby; system standby with
temperature above 54°C
.
4. Possible causes
◆
The dip switch is configured
with capacity/ heating with
outdoor ambient temperature
exceeding 26
℃
/cooling with
the temperature exceeding
54
℃
;
◆
System air leakage results
in too low pressure of units.
Failure 555.0
Failure 555.1
Failure 555.2
Failure 555.3
Check if the BM1-5 is set at
1 and the capacity of unit is
above 130%.
Check if the BM1-4 is set at
1 and the outdoor ambient
temperature reaches 26°C.
Check the unit for refrigerant
leakage and if the values of
high/low pressure sensor
are correct.
Check if the environment
temperature is above 54°C
in cooling.
Y
Y
Y
N
N
N
N