20
Failure code
Digital tube
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
denition
Failure description Remarks
53 53
CT current is too
low or current
sensor fault
3 minutes after recovery
3 times in an
hour, conrm
failure; once
conrmation,
un-resumable
64 64
CT current is too
high
CT current exceeds specied value, 3 minutes after
recovery
3 times in an
hour, conrm
failure; once
conrmation,
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, conrm the failure.
Once
conrmation,
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, conrm
failure; once
conrmation,
un-resumable
82 82
Compressor
current protection
Compressor current exceeds specied value, 3 minutes
after recovery
3 times in an
hour, conrm
failure; once
conrmation,
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 rectier
side software
Transient over current in IPM module rectier side software
3 times in an
hour, conrm
failure; once
conrmation,
un-resumable
109 109
Current detection
circuit abnormality
Current detection circuit abnormality
3 times in an
hour, conrm
failure; once
conrmation,
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, conrm
failure; once
conrmation,
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