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22
Failure code
Digital tube
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
denition
Failure description Remarks
62 62
Valve plate module
error(sending by
valve plate)
Reserved Resumable
63 63
Valve plate dial
setting error
No valve plate module dial but the valve plate module is
detected.
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
75 75-0
No pressure drop
between high
pressure and low
pressure
In 1 minute after INV compressor starts up, Pd-Ps≤0.1MPa,
then stop. 180 seconds later, resume automatically. If it
occurs 3 times in an hour, conrm the failure.
Once
conrmed,
unresumable
75-4 75-4
Too small pressure
drop between high
pressure and low
pressure
If Pd-Ps≤0.2MPa for 5 minutes, the outdoor unit protection
stop.
• 3 minutes after stopping protection, restart. If it occurs 3
times in an hour, conrm the failure.
Once
conrmed,
unresumable
78 78 Lack of refrigerant
Compressor running in cooling mode, Ps<0.2MPa for 30
minutes; compressor running in heating mode, Tsi - ET>20;
LEV will fully open for 60 minutes, the unit will output lack of
refrigerant alarm,unit will not stop.
--
81 81
IPM modular temp.
too high protection
IPM modular temp.≥185°F(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
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
110 110
IPM modular
protection (F0)
IPM modular over current, in short circuit, over heat, voltage
too low of control circuit.
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
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