27
LD
indication
on master
unit
Indication
on wired
controller
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Failure code
GH¿QLWLRQ
Failure description
Remarks
39-2
39-2
Compression
ratio too low
protection
In normal operation, compression ratio
<1.8 for continuous 5 minutes stop and
alarm.2 minutes and 1 seconds later,
resume automatically, if it occurs 3 times
LQDQKRXUFRQ¿UPWKHIDLOXUH
Once
FRQ¿UPDWLRQ
un-resumable
40
40
High pressure
sensor Pd too
high protection
In normal operation, Pd>=4.15Mpa for
continuous 50ms, alarm and stop. 2
minutes and 50 seconds later, resume
automatically, if it occurs 3 times in an
KRXUFRQ¿UPWKHIDLOXUH
Once
FRQ¿UPDWLRQ
un-resumable
43
43
Discharging
temp. sensor
Td too low
protection
In normal operation, if Td<CT+10 for
continuous 5 minutes, the unit stops and
alarms.2 minutes and 50 seconds later,
resume automatically. If it occurs 3 times
LQDQKRXUFRQ¿UPWKHIDLOXUH$IWHU¿[HG
IUHTXHQF\FRPSUHVVRUDODUPVLQYHUWHU
FRPSUHVVRUZLOOFRQWLQXHWRUXQ,I¿[HG
frequency compressor has been locked
for 3 times, the unit will stop and alarm.
Once
FRQ¿UPDWLRQ
un-resumable
46
46
Communication
ZLWKLQYHUWHU
board failure
No communication within 30 seconds
continuously
Resumable
71
71
DC motor
blocked
Running at speed below 20rpm for 30s,
RUDWVSHHGRIORZHUWKDQWKHWDUJHW
for 2 minutes, 2 minutes and 50 seconds
later after stop, resume automatically. It
RFFXUVWLPHVLQDQKRXUFRQ¿UPWKH
failure.
Once
FRQ¿UPDWLRQ
un-resumable
75
75
No pressure
drop between
high pressure
and low one
,QPLQXWHVDIWHULQYHUWHUFRPSUHVVRU
starts up, Pd-Ps<=0.2MPa. 2 minutes
and 50 seconds later after unit stops,
resume automatically, if it occurs twice
FRQWLQXRXVO\FRQ¿UPWKHIDLOXUH
Once
FRQ¿UPDWLRQ
un-resumable
78
78
Lack of
refrigerant
Compressor running in cooling mode,
3V03DIRUPLQXWHVFRPSUHVVRU
UXQQLQJLQKHDWLQJPRGH7VL(7!
LEV will fully open for 60 minutes, the
unit will output lack of refrigerant alarm,
unit will not stop.
--
Failure code
