20
Failure code
Digital tube
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
definition
Failure description
Remarks
53
53
CT current is too
low or current
sensor fault
3 minutes after recovery
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
64
64
CT current is too
high
CT current exceeds specified value, 3 minutes after
recovery
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
71-0
71-0
Upper DC motor
blocked
Running at speed below 20rpm for 30s, or at speed of
70% lower than the target for 2 minutes, 2 minutes and 50
seconds later after stop, resume automatically. It occurs 3
times in an hour, confirm the failure.
Once
confirmation,
un-resumable
71-1
71-1
Lower DC motor
blocked
81
81
IPM modular temp.
too high protection IPM modular temp.≥85°C
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
82
82
Compressor
current protection
Compressor current exceeds specified value, 3 minutes
after recovery
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
83
83
Outdoor model set
error
Model and the number of fans do not match
Un-resumable
108
108
Transient over
current in IPM
module rectifier
side software
Transient over current in IPM module rectifier side software
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
109
109
Current detection
circuit abnormality Current detection circuit abnormality
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
110
110
IPM modular
protection (F0)
IPM modular over current, in short circuit, over heat, voltage
too low of control circuit.
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
111
111
Compressor out of
control
In the course of compressor startup or running, the unit can
not detect the rotor position, or not connecting compressor.
112
112
Radiator of
transducer temp.
too high
Radiator temp. too high
113
113
Transducer
overload
Output current of transducer is too high
114
114
Voltage too low
of DC bus line of
transducer
Voltage of power source is too low
