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Failure code
Digital tube
Indication
indication
on wired
on master
controller
unit
(hex)
115
115
116
116
117
117
118
118
119
119
120
120
121
121
122
122
123
123
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
555.1
Outdoor ambient temperature too high (heating)
Outdoor ambient temperature too high or too low
555.3
(cooling)
Failure code
Failure description
definition
Voltage too high
of DC bus line of
Voltage of power source is too high
transducer
Communication
abnormal between
Communication is disconnected
transducer and
control PCB
Compressor startup fails for 5 times continuously, or
Transducer over
compressor is running down till stops caused by over
current (software)
current or over heat
Compressor
The sensor used for current detecting of transducer is
startup failure
abnormal, disconnected or incorrectly connection
Detecting circuit of
Current detection sensor of frequency controller is abnormal
transducer current
or unconnected or connected wrongly.
is abnormal
Power supply
of transducer
Power supply of transducer is broken down instantly
abnormal
Power supply of
inverter board is
Power supply of inverter board is broken down instantly
abnormal
Radiator temp.
sensor of
Resistor of temp.sensor abnormal or temp.sensor
transducer
disconnected
abnormal
Transient over
current in IPM
Transient over current in IPM module rectifier side hard
module rectifier
ware
side hardware
When capacity is over 130% or lower than
50%, the system is standby.
Ta>27°C, Standby
Ta>54°C or Ta<-10°C, Standby
21
Remarks
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Resumable
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