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Digital tube
Indication
indication
on wired
on master
controller
unit
(hex)
IPM modular
110
110
protection (F0)
Compressor out of
111
111
control
Radiator of
112
112
transducer temp. too
high
113
113
Transducer overload Output current of transducer is too high
Voltage too low of DC
114
114
bus line of transducer
Voltage too high
115
115
of DC bus line of
transducer
Communication
abnormal between
116
116
transducer and
control PCB
Transducer over
117
117
current (software)
Compressor startup
118
118
failure
Detecting circuit of
119
119
transducer current is
abnormal
Power supply of
120
120
transducer abnormal
Power supply of
121
121
inverter board is
abnormal
Radiator temp.
122
122
sensor of transducer
abnormal
Transient over
current in IPM
123
123
module rectifier side
hardware
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
555.1 Outdoor ambient temperature too high (heating)
Outdoor ambient temperature too high or too low
555.3
(cooling)
Failure code
Failure description
definition
IPM modular over current, in short circuit, over heat, voltage too
low of control circuit.
In the course of compressor startup or running, the unit can not
detect the rotor position, or not connecting compressor.
Radiator temp. too high
Voltage of power source is too low
Voltage of power source is too high
Communication is disconnected
Compressor startup fails for 5 times continuously, or compressor
is running down till stops caused by over current or over heat
The sensor used for current detecting of transducer is abnormal,
disconnected or incorrectly connection
Current detection sensor of frequency controller is abnormal or
unconnected or connected wrongly.
Power supply of transducer is broken down instantly
Power supply of inverter board is broken down instantly
Resistor of temp. sensor abnormal or temp. sensor
disconnected
Transient over current in IPM module rectifier side hardware
When capacity is over 130% or lower than 50%, the
system is standby.
Ta>27°C, Standby
Ta>54°C or Ta<-15°C, Standby
44
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
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Resumable
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