48
Digital
tube
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
definition
Failure description
Remarks
115
73
Voltage too high
of DC bus line of
transducer
Voltage of power source is too high
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
116
74
Communication
abnormal between
transducer and
control PCB
Communication is disconnected
Resumable
117
75
Transducer over
current (software)
Compressor startup fails for 5 times continuously, or
compressor is running down till stops caused by over
current or over heat
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
118
76
Compressor
startup failure
The sensor used for current detecting of transducer is
abnormal, disconnected or incorrectly connection
119
77
Detecting circuit of
transducer current
is abnormal
Current detection sensor of frequency controller is abnormal
or unconnected or connected wrongly.
120
78
Power supply
of transducer
abnormal
Power supply of transducer is broken down instantly
121
79
Power supply of
inverter board is
abnormal
Power supply of inverter board is broken down instantly
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
122
7A
Radiator temp.
sensor of
transducer
abnormal
Resistor of temp. sensor abnormal or temp. sensor
disconnected
123
7B
Transient over
current in IPM
module rectifier
side hardware
Transient over current in IPM module rectifier side hard
ware
When there is no failure, if the starting condition can not be met, digital tube on master unit will display stand-by code:
555
Standby state of capacity overmatch
When capacity is over 130% or lower than
50%, the system is standby.
Resumable
555.1 Outdoor ambient temperature too high (heating)
Ta>27°C, Standby
555.3 Outdoor ambient temperature too high or too low
(cooling)
Ta>54°C or Ta<-10°C, Standby
