136
Failure code
Outdoor
digital
display tube:
31
Indoor wired
controller:
1F
Indoor unit LED status
LED5
Failure description:
P1 pressure sensor disconnection failure
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
◆
Check if the dip switch is set
as a model with pressure relief
device for ordinary model.
◆
Check if the sensor
connection is normal;
◆
Check if resistance
characteristic of the sensor is
normal;
◆
Check if the temperature
loop acquired by the PCB is
normal.
3. Abnormity confirmation
conditions
It is detected that the AD value
is below 11 (open circuit) or
above 1012 (short circuit)
for 30 seconds continuously,
and no alarm is given during
defrosting and within 3 minutes
at the end of defrosting
(shielded by ordinary model).
4. Possible causes
◆
The dip switch is set as
a model with pressure relief
device for ordinary model.
◆
The connection of sensor is
not secure;
◆
The sensor is broken;
◆
The pressure signal
acquired by PCB is not
accurate.
Reset the DIP switch BM4-
7 and BM4-8 on site and
energize and reset it by after-
sales personnel.
Check if it is a model with
pressure relief device and
the DIP switch is correct
Check if the corresponding
connector of sensor is normal
Check if the voltage characteristic of
the sensor is normal
Check if the pressure loop
acquired by the computer
board is normal
Replace it correctly by after-
sales personnel on site.
Replace it correctly by after-
sales personnel on site.
Replace it correctly by after-
sales personnel on site.
N
N
N
N
Y
Y
Y
Содержание AWAU-YDV1010-H13
Страница 1: ...SYJS 03 2017 REV A Edition 2017 03 Service Manual Flow Logic III...
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