124
Master unit
digital tube
display
failure
code
Failure code definition
Failure description
Remarks
121-0
Power supply of inverter
controller 1 board is
abnormal
Power supply of inverter controller board is
broken down instantly.
f it occurs 4
times in an hour,
confirm the
failure. Once
confirmed, un-
resumable.
121-1
Power supply of inverter
controller 2 board is abnormal
122-0
Radiator temp. sensor
of inverter controller 1 is
abnormal.
Resistor of temp. sensor abnormal or temp.
sensor disconnected.
122-1
Radiator temp. sensor
of inverter controller 2 is
abnormal.
125-0
Compressor 1 frequency un-
match
(Current frequency≥INV target
fr3Hz) or
(
target frequency>0
& actual frequency=0
)
for continuous 5
minutes
Resumable
125-1
Compressor 2 frequency un-
match
127
MCU reset failure
If the master unit inspects that MCU of slave
unit is reset, and the slave unit is running, the
master unit alarm MCU reset failure, then the
whole system stop. In heating mode, when
restart up, 4WV will not be electrified, and
the whole system will execute 4WV reversing
operation again. If it occurs 4 times in one
hour, confirm the failure.
Once
confirmed, un-
resumable
128
MCU program need update
The VRF system program is incompatible,
program update prompt.
Un-resumable
When there is no failure, if the starting condition can not be met, digital tube on master unit will display stand-by
code:
555.0
Standby state of capacity
overmatch
When capacity is over 135% or lower than 50%,
the system is standby.
Resumable
555.1
Standby state of 26°C heating
mode
When it is in heating mode with ambient
temperature over 26°C, the system is standby.
555.2
Standby state of super low
pressure (lack of refrigerant)
When the unit starts in cooling with Ps<0.23Mpa
or heating with Ps<0.12Mpa, the system is
standby.
555.3
54°C cooling standby
High ambient models, the unit can't open if
ambient temp. above 54°C, 7-segment board
display: "555.3"
555.6
Coded lock restrictions standby
Reach the system maximum operation time set
by coded lock, the system standby
※
Failure code distribution introduction
0
~
19
:
indoor unit failure
20
~
99
:
outdoor unit failure
110
~
125
:
inverter module failure
126
~
127
:
soft self-detect
Содержание AWAU-YDV1010-H13
Страница 1: ...SYJS 03 2017 REV A Edition 2017 03 Service Manual Flow Logic III...
Страница 56: ...54 7 Operation range...
Страница 102: ...100 Power module driver board 0151800090B and 0151800090...
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Страница 187: ...Airwell reserves the right to make change without any notice...