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Failure code
Digital tube
Indication
indication
on wired
on master
controller
unit
(hex)
46
46
49
49
51-0
51-0
51-2
51-2
52-0
52-0
52-2
52-2
53
53
58
58
59
59
64
64
71-0
71-0
71-1
71-1
81
81
82
82
83
83
Failure code
Failure description
definition
Communication
with inverter board
No communication within 30 seconds continuously
failure
"Low pressure
If disconnect for 50ms continuously,alarm.If alarm 3 times in
switch LPS failure"
an hour,confirm the failure
LEVa current is too
LEV driver chip detection
high
LEVb current is too
LEV driver chip detection
high
LEVa broken line
LEV driver chip detection
fault
LEVb broken line
LEV driver chip detection
fault
CT current is too
low or current
3 minutes after recovery
sensor fault
Tc1 temp sensor
of valve plate
Tc1 temp. sensor cannot connect with valve plate module
error(sending by
valve plate)
Tc2 temp sensor
of valve plate
Tc2 temp. sensor cannot connect with valve plate module
error(sending by
valve plate)
CT current is too
CT current exceeds specified value, 3 minutes after
high
recovery
Upper DC motor
Running at speed below 20rpm for 30s, or at speed of
blocked
70% lower than the target for 2 minutes, 2 minutes and 50
seconds later after stop, resume automatically. It occurs 3
Lower DC motor
times in an hour, confirm the failure.
blocked
IPM modular temp.
IPM modular temp.≥185°F(85°C)
too high protection
Compressor
Compressor current exceeds specified value, 3 minutes
current protection
after recovery
Outdoor model set
Model and the number of fans do not match
error
20
Remarks
Resumable
"Once
confirmation,
un-resumable"
Resumable
Resumable
Resumable
Resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Resumable
Resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Once
confirmation,
un-resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Un-resumable
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