Airwell YEVFD Series, Service Manual

Page: 60 / 92

Digital
tube
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
definition
Failure description Remarks
71-0
47
Upper DC Fan
failure
The failure will alarm when it runs below 20 rpm for 40
seconds or below 20% of the target value for 2 minutes.
The failure will be removed after 3 minutes. Failure is
locked if it occurs 3 times in one hour.
Once failure
locked, un-
resumable.
71-1 47
Lower DC Fan2
failure
78
4E
Lack of refrigerant
1.Cooling: Ps≤0.2MPa for 30 consecutive minutes,
failure alarm. Ps≥0.3MPa for 30 consecutive minutes,
failure removed.
2.Heating:Both LEVa equals to 470pls and Ts-Ps≥20
℃
for 60 consecutive minutes, failure alarm. Ps≥0.2MPa
for 30 consecutive minutes, failure removed.
Resumable
81 51
Inverter module
temp. too high
Inverter temp.≥90
℃
, failure alarm. Inverter temp.
≤70
℃
, failure removed. Failure is locked if it occurs 3
times in one hour.
Once failure
locked, un-
resumable.
82
52
Compressor over
current protection
When the compressor current exceeds the specified
value for 5 consecutive seconds, failure alarm. The
failure will be removed after 3 minutes. Failure is locked
if it occurs 3 times in one hour.
Once failure
locked, un-
resumable.
83
53
Model setting
error
Model setting does not match the outdoor unit.
Once failure
locked, un-
resumable.
110
6E
The inverter
module
over current
(hardware)
Module hardware over current. Failure is locked if it
occurs 3 times in one hour.
Once failure
locked, un-
resumable.
Instantaneous over current of hardware at rectifier side
of inverter module. Failure is locked if it occurs 3 times
in one hour.
111 6F
Compressor out
of control
During start-up or operation, the rotor position cannot
be detected for 6 consecutive times, failure alarm.
The inverter module will be automatic recovery after
compressor stops for 5 seconds.
Resumable
112 70
The temp. of the
inverter module
radiator is too high
The temp. of the inverter module radiator ≥94
℃
, failure
alarm.
The temp. of the module radiator
＜
94
℃
, the inverter
module will be automatic recovery.
Resumable
114 72
The inverter input
power voltage is
abnormal
The voltage
＜
DC420V, failure alarm.
The voltage
＞
DC420V, the inverter PCB will be
automatic recovery.
Resumable
The voltage
＞
DC642V, failure alarm.
The voltage
＜
DC642V, the inverter module will be
automatic recovery.
Resumable
The power supply of inverter module is interrupted
instantaneously.
Resumable
58